From patchwork Wed Aug 29 21:36:46 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lyude Paul X-Patchwork-Id: 10580985 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 05727139B for ; Wed, 29 Aug 2018 21:37:13 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id EA88F2BB7E for ; Wed, 29 Aug 2018 21:37:12 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id DE6DB2BB83; Wed, 29 Aug 2018 21:37:12 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.2 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 97B762BB7E for ; Wed, 29 Aug 2018 21:37:12 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id E2ADE6E61F; Wed, 29 Aug 2018 21:37:07 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from mx1.redhat.com (mx3-rdu2.redhat.com [66.187.233.73]) by gabe.freedesktop.org (Postfix) with ESMTPS id 98FDE6E617; Wed, 29 Aug 2018 21:37:06 +0000 (UTC) Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.rdu2.redhat.com [10.11.54.3]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id D062C738F1; Wed, 29 Aug 2018 21:37:05 +0000 (UTC) Received: from whitewolf.lyude.net.com (ovpn-121-246.rdu2.redhat.com [10.10.121.246]) by smtp.corp.redhat.com (Postfix) with ESMTP id 70DCE1006EDA; Wed, 29 Aug 2018 21:37:05 +0000 (UTC) From: Lyude Paul To: nouveau@lists.freedesktop.org Subject: [PATCH v2 1/5] drm/nouveau: Check backlight IDs are >= 0, not > 0 Date: Wed, 29 Aug 2018 17:36:46 -0400 Message-Id: <20180829213651.20874-2-lyude@redhat.com> In-Reply-To: <20180829213651.20874-1-lyude@redhat.com> References: <20180829213651.20874-1-lyude@redhat.com> X-Scanned-By: MIMEDefang 2.78 on 10.11.54.3 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.1]); Wed, 29 Aug 2018 21:37:05 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.1]); Wed, 29 Aug 2018 21:37:05 +0000 (UTC) for IP:'10.11.54.3' DOMAIN:'int-mx03.intmail.prod.int.rdu2.redhat.com' HELO:'smtp.corp.redhat.com' FROM:'lyude@redhat.com' RCPT:'' X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: David Airlie , dri-devel@lists.freedesktop.org, Ben Skeggs , stable@vger.kernel.org, linux-kernel@vger.kernel.org MIME-Version: 1.0 Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" X-Virus-Scanned: ClamAV using ClamSMTP Remember, ida IDs start at 0, not 1! Signed-off-by: Lyude Paul Reviewed-by: Karol Herbst Cc: stable@vger.kernel.org --- drivers/gpu/drm/nouveau/nouveau_backlight.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/nouveau/nouveau_backlight.c b/drivers/gpu/drm/nouveau/nouveau_backlight.c index 408b955e5c39..6dd72bc32897 100644 --- a/drivers/gpu/drm/nouveau/nouveau_backlight.c +++ b/drivers/gpu/drm/nouveau/nouveau_backlight.c @@ -116,7 +116,7 @@ nv40_backlight_init(struct drm_connector *connector) &nv40_bl_ops, &props); if (IS_ERR(bd)) { - if (bl_connector.id > 0) + if (bl_connector.id >= 0) ida_simple_remove(&bl_ida, bl_connector.id); return PTR_ERR(bd); } @@ -249,7 +249,7 @@ nv50_backlight_init(struct drm_connector *connector) nv_encoder, ops, &props); if (IS_ERR(bd)) { - if (bl_connector.id > 0) + if (bl_connector.id >= 0) ida_simple_remove(&bl_ida, bl_connector.id); return PTR_ERR(bd); } From patchwork Wed Aug 29 21:36:47 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lyude Paul X-Patchwork-Id: 10580989 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 3E6021709 for ; Wed, 29 Aug 2018 21:37:19 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 2D9092BB7C for ; Wed, 29 Aug 2018 21:37:19 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 21B6B2BB83; Wed, 29 Aug 2018 21:37:19 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.2 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id C22D42BB7C for ; Wed, 29 Aug 2018 21:37:17 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 6CD886E620; Wed, 29 Aug 2018 21:37:09 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from mx1.redhat.com (mx3-rdu2.redhat.com [66.187.233.73]) by gabe.freedesktop.org (Postfix) with ESMTPS id 86B516E61D; Wed, 29 Aug 2018 21:37:07 +0000 (UTC) Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.rdu2.redhat.com [10.11.54.3]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id B6B4E40216F6; Wed, 29 Aug 2018 21:37:06 +0000 (UTC) Received: from whitewolf.lyude.net.com (ovpn-121-246.rdu2.redhat.com [10.10.121.246]) by smtp.corp.redhat.com (Postfix) with ESMTP id 577E110DCF6D; Wed, 29 Aug 2018 21:37:06 +0000 (UTC) From: Lyude Paul To: nouveau@lists.freedesktop.org Subject: [PATCH v2 2/5] drm/nouveau: Move backlight device into nouveau_connector Date: Wed, 29 Aug 2018 17:36:47 -0400 Message-Id: <20180829213651.20874-3-lyude@redhat.com> In-Reply-To: <20180829213651.20874-1-lyude@redhat.com> References: <20180829213651.20874-1-lyude@redhat.com> X-Scanned-By: MIMEDefang 2.78 on 10.11.54.3 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.5]); Wed, 29 Aug 2018 21:37:06 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.5]); Wed, 29 Aug 2018 21:37:06 +0000 (UTC) for IP:'10.11.54.3' DOMAIN:'int-mx03.intmail.prod.int.rdu2.redhat.com' HELO:'smtp.corp.redhat.com' FROM:'lyude@redhat.com' RCPT:'' X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: David Airlie , Ben Skeggs , dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org MIME-Version: 1.0 Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" X-Virus-Scanned: ClamAV using ClamSMTP Currently module unloading is broken in nouveau due to a rather annoying race condition resulting from nouveau_backlight.c having gone a bit stale over time: [ 1960.791143] ================================================================== [ 1960.791394] BUG: KASAN: use-after-free in nouveau_backlight_exit+0x112/0x150 [nouveau] [ 1960.791460] Read of size 4 at addr ffff88075accf350 by task zsh/11185 [ 1960.791521] [ 1960.791545] CPU: 7 PID: 11185 Comm: zsh Kdump: loaded Tainted: G O 4.18.0Lyude-Test+ #4 [ 1960.791580] Hardware name: LENOVO 20EQS64N0B/20EQS64N0B, BIOS N1EET79W (1.52 ) 07/13/2018 [ 1960.791628] Call Trace: [ 1960.791680] dump_stack+0xa4/0xfd [ 1960.791721] print_address_description+0x71/0x239 [ 1960.791833] ? nouveau_backlight_exit+0x112/0x150 [nouveau] [ 1960.791877] kasan_report.cold.6+0x242/0x2fe [ 1960.791919] __asan_report_load4_noabort+0x19/0x20 [ 1960.792012] nouveau_backlight_exit+0x112/0x150 [nouveau] [ 1960.792081] nouveau_display_destroy+0x76/0x150 [nouveau] [ 1960.792150] nouveau_drm_device_fini+0xb7/0x190 [nouveau] [ 1960.792265] nouveau_drm_device_remove+0x14b/0x1d0 [nouveau] [ 1960.792347] ? nouveau_cli_work_queue+0x2e0/0x2e0 [nouveau] [ 1960.792378] ? trace_hardirqs_on_caller+0x38b/0x570 [ 1960.792406] ? trace_hardirqs_on+0xd/0x10 [ 1960.792472] nouveau_drm_remove+0x37/0x50 [nouveau] [ 1960.792502] pci_device_remove+0x112/0x2d0 [ 1960.792530] ? pcibios_free_irq+0x10/0x10 [ 1960.792558] ? kasan_check_write+0x14/0x20 [ 1960.792587] device_release_driver_internal+0x35c/0x650 [ 1960.792617] device_release_driver+0x12/0x20 [ 1960.792643] pci_stop_bus_device+0x172/0x1e0 [ 1960.792671] pci_stop_and_remove_bus_device_locked+0x1a/0x30 [ 1960.792715] remove_store+0xcb/0xe0 [ 1960.792753] ? sriov_numvfs_store+0x2e0/0x2e0 [ 1960.792779] ? __lock_is_held+0xb5/0x140 [ 1960.792808] ? component_add+0x530/0x530 [ 1960.792834] dev_attr_store+0x3f/0x70 [ 1960.792859] ? sysfs_file_ops+0x11d/0x170 [ 1960.792885] sysfs_kf_write+0x104/0x150 [ 1960.792915] ? sysfs_file_ops+0x170/0x170 [ 1960.792940] kernfs_fop_write+0x24f/0x400 [ 1960.792978] ? __lock_acquire+0x6ea/0x47f0 [ 1960.793021] __vfs_write+0xeb/0x760 [ 1960.793048] ? kernel_read+0x130/0x130 [ 1960.793076] ? __lock_is_held+0xb5/0x140 [ 1960.793107] ? rcu_read_lock_sched_held+0xdd/0x110 [ 1960.793135] ? rcu_sync_lockdep_assert+0x78/0xb0 [ 1960.793162] ? __sb_start_write+0x183/0x220 [ 1960.793189] vfs_write+0x14d/0x4a0 [ 1960.793229] ksys_write+0xd2/0x1b0 [ 1960.793255] ? __ia32_sys_read+0xb0/0xb0 [ 1960.793298] ? fput+0x1d/0x120 [ 1960.793324] ? filp_close+0xf3/0x130 [ 1960.793349] ? entry_SYSCALL_64_after_hwframe+0x59/0xbe [ 1960.793380] __x64_sys_write+0x73/0xb0 [ 1960.793407] do_syscall_64+0xaa/0x400 [ 1960.793433] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1960.793460] RIP: 0033:0x7f59df433164 [ 1960.793486] Code: 89 02 48 c7 c0 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 8d 05 81 38 2d 00 8b 00 85 c0 75 13 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 54 c3 0f 1f 00 41 54 49 89 d4 55 48 89 f5 53 [ 1960.793541] RSP: 002b:00007ffd70ee2fb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 1960.793576] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f59df433164 [ 1960.793620] RDX: 0000000000000002 RSI: 00005578088640c0 RDI: 0000000000000001 [ 1960.793665] RBP: 00005578088640c0 R08: 00007f59df7038c0 R09: 00007f59e0995b80 [ 1960.793696] R10: 000000000000000a R11: 0000000000000246 R12: 00007f59df702760 [ 1960.793730] R13: 0000000000000002 R14: 00007f59df6fd760 R15: 0000000000000002 [ 1960.793768] [ 1960.793790] Allocated by task 11167: [ 1960.793816] save_stack+0x43/0xd0 [ 1960.793841] kasan_kmalloc+0xc4/0xe0 [ 1960.793880] kasan_slab_alloc+0x11/0x20 [ 1960.793905] kmem_cache_alloc+0xd7/0x270 [ 1960.793944] getname_flags+0xbd/0x520 [ 1960.793969] user_path_at_empty+0x23/0x50 [ 1960.793994] do_faccessat+0x1fc/0x5d0 [ 1960.794018] __x64_sys_access+0x59/0x80 [ 1960.794043] do_syscall_64+0xaa/0x400 [ 1960.794067] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1960.794093] [ 1960.794127] Freed by task 11167: [ 1960.794152] save_stack+0x43/0xd0 [ 1960.794190] __kasan_slab_free+0x139/0x190 [ 1960.794215] kasan_slab_free+0xe/0x10 [ 1960.794239] kmem_cache_free+0xcb/0x2c0 [ 1960.794264] putname+0xad/0xe0 [ 1960.794287] filename_lookup.part.59+0x1f1/0x360 [ 1960.794313] user_path_at_empty+0x3e/0x50 [ 1960.794338] do_faccessat+0x1fc/0x5d0 [ 1960.794362] __x64_sys_access+0x59/0x80 [ 1960.794393] do_syscall_64+0xaa/0x400 [ 1960.794421] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1960.794461] [ 1960.794483] The buggy address belongs to the object at ffff88075acceac0 [ 1960.794483] which belongs to the cache names_cache of size 4096 [ 1960.794540] The buggy address is located 2192 bytes inside of [ 1960.794540] 4096-byte region [ffff88075acceac0, ffff88075accfac0) [ 1960.794581] The buggy address belongs to the page: [ 1960.794609] page:ffffea001d6b3200 count:1 mapcount:0 mapping:ffff880778e4b1c0 index:0x0 compound_mapcount: 0 [ 1960.794651] flags: 0x8000000000008100(slab|head) [ 1960.794679] raw: 8000000000008100 ffffea001d39e808 ffffea001d39ea08 ffff880778e4b1c0 [ 1960.794739] raw: 0000000000000000 0000000000070007 00000001ffffffff 0000000000000000 [ 1960.794785] page dumped because: kasan: bad access detected [ 1960.794813] [ 1960.794834] Memory state around the buggy address: [ 1960.794861] ffff88075accf200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 1960.794894] ffff88075accf280: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 1960.794925] >ffff88075accf300: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 1960.794956] ^ [ 1960.794985] ffff88075accf380: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 1960.795017] ffff88075accf400: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 1960.795061] ================================================================== [ 1960.795106] Disabling lock debugging due to kernel taint [ 1960.795131] ------------[ cut here ]------------ [ 1960.795148] ida_remove called for id=1802201963 which is not allocated. [ 1960.795193] WARNING: CPU: 7 PID: 11185 at lib/idr.c:521 ida_remove+0x184/0x210 [ 1960.795213] Modules linked in: nouveau(O) mxm_wmi ttm i2c_algo_bit drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops drm joydev vfat fat intel_rapl x86_pkg_temp_thermal coretemp crc32_pclmul iTCO_wdt psmouse wmi_bmof mei_me tpm_tis mei tpm_tis_core tpm i2c_i801 thinkpad_acpi pcc_cpufreq crc32c_intel serio_raw xhci_pci xhci_hcd wmi video i2c_dev i2c_core [ 1960.795305] CPU: 7 PID: 11185 Comm: zsh Kdump: loaded Tainted: G B O 4.18.0Lyude-Test+ #4 [ 1960.795330] Hardware name: LENOVO 20EQS64N0B/20EQS64N0B, BIOS N1EET79W (1.52 ) 07/13/2018 [ 1960.795352] RIP: 0010:ida_remove+0x184/0x210 [ 1960.795370] Code: 4c 89 f7 e8 ae c8 00 00 eb 22 41 83 c4 02 4c 89 e8 41 83 fc 3f 0f 86 64 ff ff ff 44 89 fe 48 c7 c7 20 94 1e 83 e8 54 ed 81 fe <0f> 0b 48 b8 00 00 00 00 00 fc ff df 48 01 c3 c7 03 00 00 00 00 c7 [ 1960.795402] RSP: 0018:ffff88074d4df7b8 EFLAGS: 00010082 [ 1960.795421] RAX: 0000000000000000 RBX: 1ffff100e9a9befa RCX: ffffffff81479975 [ 1960.795440] RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff88077c1de690 [ 1960.795460] RBP: ffff88074d4df878 R08: ffffed00ef83bcd3 R09: ffffed00ef83bcd2 [ 1960.795479] R10: ffffed00ef83bcd2 R11: ffff88077c1de697 R12: 000000000000036b [ 1960.795498] R13: 0000000000000202 R14: ffffffffa0aa7fa0 R15: 000000006b6b6b6b [ 1960.795518] FS: 00007f59e0995b80(0000) GS:ffff88077c1c0000(0000) knlGS:0000000000000000 [ 1960.795553] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1960.795571] CR2: 00007f59e09a2010 CR3: 00000004a1a70005 CR4: 00000000003606e0 [ 1960.795596] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 1960.795629] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 1960.795649] Call Trace: [ 1960.795667] ? ida_destroy+0x1d0/0x1d0 [ 1960.795686] ? kasan_check_write+0x14/0x20 [ 1960.795704] ? do_raw_spin_lock+0xc2/0x1c0 [ 1960.795724] ida_simple_remove+0x26/0x40 [ 1960.795794] nouveau_backlight_exit+0x9d/0x150 [nouveau] [ 1960.795867] nouveau_display_destroy+0x76/0x150 [nouveau] [ 1960.795930] nouveau_drm_device_fini+0xb7/0x190 [nouveau] [ 1960.795989] nouveau_drm_device_remove+0x14b/0x1d0 [nouveau] [ 1960.796047] ? nouveau_cli_work_queue+0x2e0/0x2e0 [nouveau] [ 1960.796067] ? trace_hardirqs_on_caller+0x38b/0x570 [ 1960.796089] ? trace_hardirqs_on+0xd/0x10 [ 1960.796146] nouveau_drm_remove+0x37/0x50 [nouveau] [ 1960.796167] pci_device_remove+0x112/0x2d0 [ 1960.796186] ? pcibios_free_irq+0x10/0x10 [ 1960.796218] ? kasan_check_write+0x14/0x20 [ 1960.796237] device_release_driver_internal+0x35c/0x650 [ 1960.796257] device_release_driver+0x12/0x20 [ 1960.796289] pci_stop_bus_device+0x172/0x1e0 [ 1960.796308] pci_stop_and_remove_bus_device_locked+0x1a/0x30 [ 1960.796328] remove_store+0xcb/0xe0 [ 1960.796345] ? sriov_numvfs_store+0x2e0/0x2e0 [ 1960.796364] ? __lock_is_held+0xb5/0x140 [ 1960.796383] ? component_add+0x530/0x530 [ 1960.796401] dev_attr_store+0x3f/0x70 [ 1960.796419] ? sysfs_file_ops+0x11d/0x170 [ 1960.796436] sysfs_kf_write+0x104/0x150 [ 1960.796454] ? sysfs_file_ops+0x170/0x170 [ 1960.796471] kernfs_fop_write+0x24f/0x400 [ 1960.796488] ? __lock_acquire+0x6ea/0x47f0 [ 1960.796520] __vfs_write+0xeb/0x760 [ 1960.796538] ? kernel_read+0x130/0x130 [ 1960.796556] ? __lock_is_held+0xb5/0x140 [ 1960.796590] ? rcu_read_lock_sched_held+0xdd/0x110 [ 1960.796608] ? rcu_sync_lockdep_assert+0x78/0xb0 [ 1960.796626] ? __sb_start_write+0x183/0x220 [ 1960.796648] vfs_write+0x14d/0x4a0 [ 1960.796666] ksys_write+0xd2/0x1b0 [ 1960.796684] ? __ia32_sys_read+0xb0/0xb0 [ 1960.796701] ? fput+0x1d/0x120 [ 1960.796732] ? filp_close+0xf3/0x130 [ 1960.796749] ? entry_SYSCALL_64_after_hwframe+0x59/0xbe [ 1960.796768] __x64_sys_write+0x73/0xb0 [ 1960.796800] do_syscall_64+0xaa/0x400 [ 1960.796818] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1960.796836] RIP: 0033:0x7f59df433164 [ 1960.796854] Code: 89 02 48 c7 c0 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 8d 05 81 38 2d 00 8b 00 85 c0 75 13 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 54 c3 0f 1f 00 41 54 49 89 d4 55 48 89 f5 53 [ 1960.796884] RSP: 002b:00007ffd70ee2fb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 1960.796906] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f59df433164 [ 1960.796926] RDX: 0000000000000002 RSI: 00005578088640c0 RDI: 0000000000000001 [ 1960.796946] RBP: 00005578088640c0 R08: 00007f59df7038c0 R09: 00007f59e0995b80 [ 1960.796966] R10: 000000000000000a R11: 0000000000000246 R12: 00007f59df702760 [ 1960.796985] R13: 0000000000000002 R14: 00007f59df6fd760 R15: 0000000000000002 [ 1960.797008] irq event stamp: 509990 [ 1960.797026] hardirqs last enabled at (509989): [] flush_work+0x4b8/0x6d0 [ 1960.797063] hardirqs last disabled at (509990): [] _raw_spin_lock_irqsave+0x25/0x60 [ 1960.797085] softirqs last enabled at (509744): [] __do_softirq+0x5ad/0x8c0 [ 1960.797121] softirqs last disabled at (509735): [] irq_exit+0x1a5/0x1e0 [ 1960.797142] ---[ end trace fb1342325f1846b8 ]--- While I haven't actually gone into the details of what's causing this to happen (maybe the kernel removes the backlight device in the device core before we get to it?), it doesn't really matter anyway because the way nouveau handles backlights has long since been deprecated. According to the documentation on the drm_connector->late_register() hook, the ->late_register() hook should be used for adding extra connector-related devices. Vice versa, the ->early_unregister() hook is meant to be used for removing those devices. So: gut nouveau_drm->bl_list and nouveau_drm->backlight, and replace them with per-connector backlight structures. Additionally, move backlight registration/teardown into the ->late_register() and ->early_unregister() hooks so that DRM can give us a chance to remove the backlight before the connector is even removed. This appears to fix the problem once and for all. Signed-off-by: Lyude Paul Reviewed-by: Karol Herbst --- drivers/gpu/drm/nouveau/nouveau_backlight.c | 149 +++++++++++--------- drivers/gpu/drm/nouveau/nouveau_connector.c | 20 +++ drivers/gpu/drm/nouveau/nouveau_connector.h | 33 +++++ drivers/gpu/drm/nouveau/nouveau_display.c | 2 - drivers/gpu/drm/nouveau/nouveau_display.h | 25 ---- drivers/gpu/drm/nouveau/nouveau_drv.h | 2 - 6 files changed, 132 insertions(+), 99 deletions(-) diff --git a/drivers/gpu/drm/nouveau/nouveau_backlight.c b/drivers/gpu/drm/nouveau/nouveau_backlight.c index 6dd72bc32897..3e4874f405ab 100644 --- a/drivers/gpu/drm/nouveau/nouveau_backlight.c +++ b/drivers/gpu/drm/nouveau/nouveau_backlight.c @@ -37,18 +37,19 @@ #include "nouveau_drv.h" #include "nouveau_reg.h" #include "nouveau_encoder.h" +#include "nouveau_connector.h" static struct ida bl_ida; #define BL_NAME_SIZE 15 // 12 for name + 2 for digits + 1 for '\0' -struct backlight_connector { - struct list_head head; +struct nouveau_backlight { + struct backlight_device *dev; int id; }; static bool -nouveau_get_backlight_name(char backlight_name[BL_NAME_SIZE], struct backlight_connector - *connector) +nouveau_get_backlight_name(char backlight_name[BL_NAME_SIZE], + struct nouveau_backlight *bl) { const int nb = ida_simple_get(&bl_ida, 0, 0, GFP_KERNEL); if (nb < 0 || nb >= 100) @@ -57,7 +58,7 @@ nouveau_get_backlight_name(char backlight_name[BL_NAME_SIZE], struct backlight_c snprintf(backlight_name, BL_NAME_SIZE, "nv_backlight%d", nb); else snprintf(backlight_name, BL_NAME_SIZE, "nv_backlight"); - connector->id = nb; + bl->id = nb; return true; } @@ -96,36 +97,45 @@ static int nv40_backlight_init(struct drm_connector *connector) { struct nouveau_drm *drm = nouveau_drm(connector->dev); + struct nouveau_backlight *bl; struct nvif_object *device = &drm->client.device.object; struct backlight_properties props; - struct backlight_device *bd; - struct backlight_connector bl_connector; char backlight_name[BL_NAME_SIZE]; + int ret = 0; if (!(nvif_rd32(device, NV40_PMC_BACKLIGHT) & NV40_PMC_BACKLIGHT_MASK)) return 0; + bl = kzalloc(sizeof(*bl), GFP_KERNEL); + if (!bl) + return -ENOMEM; + memset(&props, 0, sizeof(struct backlight_properties)); props.type = BACKLIGHT_RAW; props.max_brightness = 31; - if (!nouveau_get_backlight_name(backlight_name, &bl_connector)) { + if (!nouveau_get_backlight_name(backlight_name, bl)) { NV_ERROR(drm, "Failed to retrieve a unique name for the backlight interface\n"); - return 0; + goto fail_alloc; } - bd = backlight_device_register(backlight_name , connector->kdev, drm, - &nv40_bl_ops, &props); - if (IS_ERR(bd)) { - if (bl_connector.id >= 0) - ida_simple_remove(&bl_ida, bl_connector.id); - return PTR_ERR(bd); + bl->dev = backlight_device_register(backlight_name, connector->kdev, + drm, &nv40_bl_ops, &props); + if (IS_ERR(bl->dev)) { + if (bl->id >= 0) + ida_simple_remove(&bl_ida, bl->id); + + ret = PTR_ERR(bl->dev); + goto fail_alloc; } - list_add(&bl_connector.head, &drm->bl_connectors); - drm->backlight = bd; - bd->props.brightness = nv40_get_intensity(bd); - backlight_update_status(bd); + + nouveau_connector(connector)->backlight = bl; + bl->dev->props.brightness = nv40_get_intensity(bl->dev); + backlight_update_status(bl->dev); return 0; +fail_alloc: + kfree(bl); + return ret; } static int @@ -215,11 +225,11 @@ nv50_backlight_init(struct drm_connector *connector) struct nouveau_drm *drm = nouveau_drm(connector->dev); struct nvif_object *device = &drm->client.device.object; struct nouveau_encoder *nv_encoder; + struct nouveau_backlight *bl; struct backlight_properties props; - struct backlight_device *bd; const struct backlight_ops *ops; - struct backlight_connector bl_connector; char backlight_name[BL_NAME_SIZE]; + int ret = 0; nv_encoder = find_encoder(connector, DCB_OUTPUT_LVDS); if (!nv_encoder) { @@ -231,6 +241,10 @@ nv50_backlight_init(struct drm_connector *connector) if (!nvif_rd32(device, NV50_PDISP_SOR_PWM_CTL(ffs(nv_encoder->dcb->or) - 1))) return 0; + bl = kzalloc(sizeof(*bl), GFP_KERNEL); + if (!bl) + return -ENOMEM; + if (drm->client.device.info.chipset <= 0xa0 || drm->client.device.info.chipset == 0xaa || drm->client.device.info.chipset == 0xac) @@ -241,79 +255,74 @@ nv50_backlight_init(struct drm_connector *connector) memset(&props, 0, sizeof(struct backlight_properties)); props.type = BACKLIGHT_RAW; props.max_brightness = 100; - if (!nouveau_get_backlight_name(backlight_name, &bl_connector)) { + if (!nouveau_get_backlight_name(backlight_name, bl)) { NV_ERROR(drm, "Failed to retrieve a unique name for the backlight interface\n"); - return 0; + goto fail_alloc; } - bd = backlight_device_register(backlight_name , connector->kdev, - nv_encoder, ops, &props); - if (IS_ERR(bd)) { - if (bl_connector.id >= 0) - ida_simple_remove(&bl_ida, bl_connector.id); - return PTR_ERR(bd); + bl->dev = backlight_device_register(backlight_name, connector->kdev, + nv_encoder, ops, &props); + if (IS_ERR(bl->dev)) { + if (bl->id >= 0) + ida_simple_remove(&bl_ida, bl->id); + + ret = PTR_ERR(bl->dev); + goto fail_alloc; } - list_add(&bl_connector.head, &drm->bl_connectors); - drm->backlight = bd; - bd->props.brightness = bd->ops->get_brightness(bd); - backlight_update_status(bd); + nouveau_connector(connector)->backlight = bl; + bl->dev->props.brightness = bl->dev->ops->get_brightness(bl->dev); + backlight_update_status(bl->dev); return 0; + +fail_alloc: + kfree(bl); + return ret; } int -nouveau_backlight_init(struct drm_device *dev) +nouveau_backlight_init(struct drm_connector *connector) { - struct nouveau_drm *drm = nouveau_drm(dev); + struct nouveau_drm *drm = nouveau_drm(connector->dev); struct nvif_device *device = &drm->client.device; - struct drm_connector *connector; - struct drm_connector_list_iter conn_iter; - - INIT_LIST_HEAD(&drm->bl_connectors); if (apple_gmux_present()) { NV_INFO(drm, "Apple GMUX detected: not registering Nouveau backlight interface\n"); return 0; } - drm_connector_list_iter_begin(dev, &conn_iter); - drm_for_each_connector_iter(connector, &conn_iter) { - if (connector->connector_type != DRM_MODE_CONNECTOR_LVDS && - connector->connector_type != DRM_MODE_CONNECTOR_eDP) - continue; - - switch (device->info.family) { - case NV_DEVICE_INFO_V0_CURIE: - return nv40_backlight_init(connector); - case NV_DEVICE_INFO_V0_TESLA: - case NV_DEVICE_INFO_V0_FERMI: - case NV_DEVICE_INFO_V0_KEPLER: - case NV_DEVICE_INFO_V0_MAXWELL: - return nv50_backlight_init(connector); - default: - break; - } - } - drm_connector_list_iter_end(&conn_iter); + if (connector->connector_type != DRM_MODE_CONNECTOR_LVDS && + connector->connector_type != DRM_MODE_CONNECTOR_eDP) + return 0; - return 0; + switch (device->info.family) { + case NV_DEVICE_INFO_V0_CURIE: + return nv40_backlight_init(connector); + case NV_DEVICE_INFO_V0_TESLA: + case NV_DEVICE_INFO_V0_FERMI: + case NV_DEVICE_INFO_V0_KEPLER: + case NV_DEVICE_INFO_V0_MAXWELL: + return nv50_backlight_init(connector); + default: + return 0; + } } void -nouveau_backlight_exit(struct drm_device *dev) +nouveau_backlight_exit(struct drm_connector *connector) { - struct nouveau_drm *drm = nouveau_drm(dev); - struct backlight_connector *connector; + struct nouveau_connector *nv_conn = nouveau_connector(connector); + struct nouveau_backlight *bl = nv_conn->backlight; - list_for_each_entry(connector, &drm->bl_connectors, head) { - if (connector->id >= 0) - ida_simple_remove(&bl_ida, connector->id); - } + if (!bl) + return; - if (drm->backlight) { - backlight_device_unregister(drm->backlight); - drm->backlight = NULL; - } + if (bl->id >= 0) + ida_simple_remove(&bl_ida, bl->id); + + backlight_device_unregister(bl->dev); + nv_conn->backlight = NULL; + kfree(bl); } void diff --git a/drivers/gpu/drm/nouveau/nouveau_connector.c b/drivers/gpu/drm/nouveau/nouveau_connector.c index c5eac44e0b61..767e892de9c4 100644 --- a/drivers/gpu/drm/nouveau/nouveau_connector.c +++ b/drivers/gpu/drm/nouveau/nouveau_connector.c @@ -898,6 +898,22 @@ nouveau_connector_detect_depth(struct drm_connector *connector) connector->display_info.bpc = 8; } +static int +nouveau_connector_late_register(struct drm_connector *connector) +{ + int ret; + + ret = nouveau_backlight_init(connector); + + return ret; +} + +static void +nouveau_connector_early_unregister(struct drm_connector *connector) +{ + nouveau_backlight_exit(connector); +} + static int nouveau_connector_get_modes(struct drm_connector *connector) { @@ -1082,6 +1098,8 @@ nouveau_connector_funcs = { .atomic_destroy_state = nouveau_conn_atomic_destroy_state, .atomic_set_property = nouveau_conn_atomic_set_property, .atomic_get_property = nouveau_conn_atomic_get_property, + .late_register = nouveau_connector_late_register, + .early_unregister = nouveau_connector_early_unregister, }; static const struct drm_connector_funcs @@ -1097,6 +1115,8 @@ nouveau_connector_funcs_lvds = { .atomic_destroy_state = nouveau_conn_atomic_destroy_state, .atomic_set_property = nouveau_conn_atomic_set_property, .atomic_get_property = nouveau_conn_atomic_get_property, + .late_register = nouveau_connector_late_register, + .early_unregister = nouveau_connector_early_unregister, }; static int diff --git a/drivers/gpu/drm/nouveau/nouveau_connector.h b/drivers/gpu/drm/nouveau/nouveau_connector.h index 2d9d35a146a4..5465ae82fb9f 100644 --- a/drivers/gpu/drm/nouveau/nouveau_connector.h +++ b/drivers/gpu/drm/nouveau/nouveau_connector.h @@ -38,6 +38,10 @@ struct nvkm_i2c_port; struct dcb_output; +#ifdef CONFIG_DRM_NOUVEAU_BACKLIGHT +struct nouveau_backlight; +#endif + struct nouveau_connector { struct drm_connector base; enum dcb_connector_type type; @@ -54,6 +58,9 @@ struct nouveau_connector { struct nouveau_encoder *detected_encoder; struct edid *edid; struct drm_display_mode *native_mode; +#ifdef CONFIG_DRM_NOUVEAU_BACKLIGHT + struct nouveau_backlight *backlight; +#endif }; static inline struct nouveau_connector *nouveau_connector( @@ -180,4 +187,30 @@ int nouveau_conn_atomic_get_property(struct drm_connector *, const struct drm_connector_state *, struct drm_property *, u64 *); struct drm_display_mode *nouveau_conn_native_mode(struct drm_connector *); + +#ifdef CONFIG_DRM_NOUVEAU_BACKLIGHT +extern int nouveau_backlight_init(struct drm_connector *); +extern void nouveau_backlight_exit(struct drm_connector *); +extern void nouveau_backlight_ctor(void); +extern void nouveau_backlight_dtor(void); +#else +static inline int +nouveau_backlight_init(struct drm_connector *connector) +{ + return 0; +} + +static inline void +nouveau_backlight_exit(struct drm_connector *connector) { +} + +static inline void +nouveau_backlight_ctor(void) { +} + +static inline void +nouveau_backlight_dtor(void) { +} +#endif + #endif /* __NOUVEAU_CONNECTOR_H__ */ diff --git a/drivers/gpu/drm/nouveau/nouveau_display.c b/drivers/gpu/drm/nouveau/nouveau_display.c index e4024af5a46f..8d4835f6be6b 100644 --- a/drivers/gpu/drm/nouveau/nouveau_display.c +++ b/drivers/gpu/drm/nouveau/nouveau_display.c @@ -579,7 +579,6 @@ nouveau_display_create(struct drm_device *dev) goto vblank_err; } - nouveau_backlight_init(dev); INIT_WORK(&drm->hpd_work, nouveau_display_hpd_work); #ifdef CONFIG_ACPI drm->acpi_nb.notifier_call = nouveau_display_acpi_ntfy; @@ -604,7 +603,6 @@ nouveau_display_destroy(struct drm_device *dev) #ifdef CONFIG_ACPI unregister_acpi_notifier(&nouveau_drm(dev)->acpi_nb); #endif - nouveau_backlight_exit(dev); nouveau_display_vblank_fini(dev); drm_kms_helper_poll_fini(dev); diff --git a/drivers/gpu/drm/nouveau/nouveau_display.h b/drivers/gpu/drm/nouveau/nouveau_display.h index 54aa7c3fa42d..a881cac5a3a9 100644 --- a/drivers/gpu/drm/nouveau/nouveau_display.h +++ b/drivers/gpu/drm/nouveau/nouveau_display.h @@ -85,31 +85,6 @@ int nouveau_display_dumb_map_offset(struct drm_file *, struct drm_device *, void nouveau_hdmi_mode_set(struct drm_encoder *, struct drm_display_mode *); -#ifdef CONFIG_DRM_NOUVEAU_BACKLIGHT -extern int nouveau_backlight_init(struct drm_device *); -extern void nouveau_backlight_exit(struct drm_device *); -extern void nouveau_backlight_ctor(void); -extern void nouveau_backlight_dtor(void); -#else -static inline int -nouveau_backlight_init(struct drm_device *dev) -{ - return 0; -} - -static inline void -nouveau_backlight_exit(struct drm_device *dev) { -} - -static inline void -nouveau_backlight_ctor(void) { -} - -static inline void -nouveau_backlight_dtor(void) { -} -#endif - struct drm_framebuffer * nouveau_user_framebuffer_create(struct drm_device *, struct drm_file *, const struct drm_mode_fb_cmd2 *); diff --git a/drivers/gpu/drm/nouveau/nouveau_drv.h b/drivers/gpu/drm/nouveau/nouveau_drv.h index 6e1acaec3400..1cc2cf2b325a 100644 --- a/drivers/gpu/drm/nouveau/nouveau_drv.h +++ b/drivers/gpu/drm/nouveau/nouveau_drv.h @@ -194,8 +194,6 @@ struct nouveau_drm { /* modesetting */ struct nvbios vbios; struct nouveau_display *display; - struct backlight_device *backlight; - struct list_head bl_connectors; struct work_struct hpd_work; struct work_struct fbcon_work; int fbcon_new_state; From patchwork Wed Aug 29 21:36:48 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lyude Paul X-Patchwork-Id: 10580987 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 123181709 for ; Wed, 29 Aug 2018 21:37:16 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 032A62BB7C for ; Wed, 29 Aug 2018 21:37:16 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id EBE022BB7F; Wed, 29 Aug 2018 21:37:15 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.2 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id ABDDC2BB7C for ; Wed, 29 Aug 2018 21:37:15 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id CC3376E622; Wed, 29 Aug 2018 21:37:09 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from mx1.redhat.com (mx3-rdu2.redhat.com [66.187.233.73]) by gabe.freedesktop.org (Postfix) with ESMTPS id 2CADE6E620; Wed, 29 Aug 2018 21:37:08 +0000 (UTC) Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.rdu2.redhat.com [10.11.54.3]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 6C62A4023337; Wed, 29 Aug 2018 21:37:07 +0000 (UTC) Received: from whitewolf.lyude.net.com (ovpn-121-246.rdu2.redhat.com [10.10.121.246]) by smtp.corp.redhat.com (Postfix) with ESMTP id 17A2C1006EDA; Wed, 29 Aug 2018 21:37:07 +0000 (UTC) From: Lyude Paul To: nouveau@lists.freedesktop.org Subject: [PATCH v2 3/5] drm/nouveau: s/nouveau_backlight_exit/nouveau_backlight_fini/ Date: Wed, 29 Aug 2018 17:36:48 -0400 Message-Id: <20180829213651.20874-4-lyude@redhat.com> In-Reply-To: <20180829213651.20874-1-lyude@redhat.com> References: <20180829213651.20874-1-lyude@redhat.com> X-Scanned-By: MIMEDefang 2.78 on 10.11.54.3 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.6]); Wed, 29 Aug 2018 21:37:07 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.6]); Wed, 29 Aug 2018 21:37:07 +0000 (UTC) for IP:'10.11.54.3' DOMAIN:'int-mx03.intmail.prod.int.rdu2.redhat.com' HELO:'smtp.corp.redhat.com' FROM:'lyude@redhat.com' RCPT:'' X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: David Airlie , Ben Skeggs , dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org MIME-Version: 1.0 Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" X-Virus-Scanned: ClamAV using ClamSMTP More consistent with the rest of the codebase, no functional changes here. Signed-off-by: Lyude Paul Reviewed-by: Karol Herbst --- drivers/gpu/drm/nouveau/nouveau_backlight.c | 2 +- drivers/gpu/drm/nouveau/nouveau_connector.c | 2 +- drivers/gpu/drm/nouveau/nouveau_connector.h | 4 ++-- 3 files changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/gpu/drm/nouveau/nouveau_backlight.c b/drivers/gpu/drm/nouveau/nouveau_backlight.c index 3e4874f405ab..017d5b7924bb 100644 --- a/drivers/gpu/drm/nouveau/nouveau_backlight.c +++ b/drivers/gpu/drm/nouveau/nouveau_backlight.c @@ -309,7 +309,7 @@ nouveau_backlight_init(struct drm_connector *connector) } void -nouveau_backlight_exit(struct drm_connector *connector) +nouveau_backlight_fini(struct drm_connector *connector) { struct nouveau_connector *nv_conn = nouveau_connector(connector); struct nouveau_backlight *bl = nv_conn->backlight; diff --git a/drivers/gpu/drm/nouveau/nouveau_connector.c b/drivers/gpu/drm/nouveau/nouveau_connector.c index 767e892de9c4..3b288be9c3f7 100644 --- a/drivers/gpu/drm/nouveau/nouveau_connector.c +++ b/drivers/gpu/drm/nouveau/nouveau_connector.c @@ -911,7 +911,7 @@ nouveau_connector_late_register(struct drm_connector *connector) static void nouveau_connector_early_unregister(struct drm_connector *connector) { - nouveau_backlight_exit(connector); + nouveau_backlight_fini(connector); } static int diff --git a/drivers/gpu/drm/nouveau/nouveau_connector.h b/drivers/gpu/drm/nouveau/nouveau_connector.h index 5465ae82fb9f..76e79717e451 100644 --- a/drivers/gpu/drm/nouveau/nouveau_connector.h +++ b/drivers/gpu/drm/nouveau/nouveau_connector.h @@ -190,7 +190,7 @@ struct drm_display_mode *nouveau_conn_native_mode(struct drm_connector *); #ifdef CONFIG_DRM_NOUVEAU_BACKLIGHT extern int nouveau_backlight_init(struct drm_connector *); -extern void nouveau_backlight_exit(struct drm_connector *); +extern void nouveau_backlight_fini(struct drm_connector *); extern void nouveau_backlight_ctor(void); extern void nouveau_backlight_dtor(void); #else @@ -201,7 +201,7 @@ nouveau_backlight_init(struct drm_connector *connector) } static inline void -nouveau_backlight_exit(struct drm_connector *connector) { +nouveau_backlight_fini(struct drm_connector *connector) { } static inline void From patchwork Wed Aug 29 21:36:49 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lyude Paul X-Patchwork-Id: 10580991 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 76C3F139B for ; Wed, 29 Aug 2018 21:37:34 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 688D92BB7C for ; Wed, 29 Aug 2018 21:37:34 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 5C8B52BB83; Wed, 29 Aug 2018 21:37:34 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.2 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 2090C2BB7C for ; Wed, 29 Aug 2018 21:37:34 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 58D316E62C; Wed, 29 Aug 2018 21:37:10 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from mx1.redhat.com (mx3-rdu2.redhat.com [66.187.233.73]) by gabe.freedesktop.org (Postfix) with ESMTPS id B25566E61D; Wed, 29 Aug 2018 21:37:08 +0000 (UTC) Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.rdu2.redhat.com [10.11.54.3]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 028754B759; Wed, 29 Aug 2018 21:37:08 +0000 (UTC) Received: from whitewolf.lyude.net.com (ovpn-121-246.rdu2.redhat.com [10.10.121.246]) by smtp.corp.redhat.com (Postfix) with ESMTP id A32D71010421; Wed, 29 Aug 2018 21:37:07 +0000 (UTC) From: Lyude Paul To: nouveau@lists.freedesktop.org Subject: [PATCH v2 4/5] drm/nouveau: Cleanup indenting in nouveau_backlight.c Date: Wed, 29 Aug 2018 17:36:49 -0400 Message-Id: <20180829213651.20874-5-lyude@redhat.com> In-Reply-To: <20180829213651.20874-1-lyude@redhat.com> References: <20180829213651.20874-1-lyude@redhat.com> X-Scanned-By: MIMEDefang 2.78 on 10.11.54.3 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.1]); Wed, 29 Aug 2018 21:37:08 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.1]); Wed, 29 Aug 2018 21:37:08 +0000 (UTC) for IP:'10.11.54.3' DOMAIN:'int-mx03.intmail.prod.int.rdu2.redhat.com' HELO:'smtp.corp.redhat.com' FROM:'lyude@redhat.com' RCPT:'' X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: David Airlie , Ben Skeggs , dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org MIME-Version: 1.0 Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" X-Virus-Scanned: ClamAV using ClamSMTP Still no functional changes. Signed-off-by: Lyude Paul Reviewed-by: Karol Herbst --- drivers/gpu/drm/nouveau/nouveau_backlight.c | 13 +++++++------ 1 file changed, 7 insertions(+), 6 deletions(-) diff --git a/drivers/gpu/drm/nouveau/nouveau_backlight.c b/drivers/gpu/drm/nouveau/nouveau_backlight.c index 017d5b7924bb..7ad90e7610a1 100644 --- a/drivers/gpu/drm/nouveau/nouveau_backlight.c +++ b/drivers/gpu/drm/nouveau/nouveau_backlight.c @@ -68,7 +68,7 @@ nv40_get_intensity(struct backlight_device *bd) struct nouveau_drm *drm = bl_get_data(bd); struct nvif_object *device = &drm->client.device.object; int val = (nvif_rd32(device, NV40_PMC_BACKLIGHT) & - NV40_PMC_BACKLIGHT_MASK) >> 16; + NV40_PMC_BACKLIGHT_MASK) >> 16; return val; } @@ -82,7 +82,7 @@ nv40_set_intensity(struct backlight_device *bd) int reg = nvif_rd32(device, NV40_PMC_BACKLIGHT); nvif_wr32(device, NV40_PMC_BACKLIGHT, - (val << 16) | (reg & ~NV40_PMC_BACKLIGHT_MASK)); + (val << 16) | (reg & ~NV40_PMC_BACKLIGHT_MASK)); return 0; } @@ -164,7 +164,7 @@ nv50_set_intensity(struct backlight_device *bd) u32 val = (bd->props.brightness * div) / 100; nvif_wr32(device, NV50_PDISP_SOR_PWM_CTL(or), - NV50_PDISP_SOR_PWM_CTL_NEW | val); + NV50_PDISP_SOR_PWM_CTL_NEW | val); return 0; } @@ -204,9 +204,10 @@ nva3_set_intensity(struct backlight_device *bd) div = nvif_rd32(device, NV50_PDISP_SOR_PWM_DIV(or)); val = (bd->props.brightness * div) / 100; if (div) { - nvif_wr32(device, NV50_PDISP_SOR_PWM_CTL(or), val | - NV50_PDISP_SOR_PWM_CTL_NEW | - NVA3_PDISP_SOR_PWM_CTL_UNK); + nvif_wr32(device, NV50_PDISP_SOR_PWM_CTL(or), + val | + NV50_PDISP_SOR_PWM_CTL_NEW | + NVA3_PDISP_SOR_PWM_CTL_UNK); return 0; } From patchwork Wed Aug 29 21:36:50 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lyude Paul X-Patchwork-Id: 10580993 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id D344F139B for ; Wed, 29 Aug 2018 21:37:45 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id C35032BB7C for ; Wed, 29 Aug 2018 21:37:45 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id B790B2BB83; Wed, 29 Aug 2018 21:37:45 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.2 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 382032BB7C for ; Wed, 29 Aug 2018 21:37:45 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 1FB686E627; Wed, 29 Aug 2018 21:37:15 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from mx1.redhat.com (mx3-rdu2.redhat.com [66.187.233.73]) by gabe.freedesktop.org (Postfix) with ESMTPS id 7F1CE6E621; Wed, 29 Aug 2018 21:37:09 +0000 (UTC) Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.rdu2.redhat.com [10.11.54.3]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id BC23640216F9; Wed, 29 Aug 2018 21:37:08 +0000 (UTC) Received: from whitewolf.lyude.net.com (ovpn-121-246.rdu2.redhat.com [10.10.121.246]) by smtp.corp.redhat.com (Postfix) with ESMTP id 3CD631006EDA; Wed, 29 Aug 2018 21:37:08 +0000 (UTC) From: Lyude Paul To: nouveau@lists.freedesktop.org Subject: [PATCH v2 5/5] drm/nouveau: Refactor nvXX_backlight_init() Date: Wed, 29 Aug 2018 17:36:50 -0400 Message-Id: <20180829213651.20874-6-lyude@redhat.com> In-Reply-To: <20180829213651.20874-1-lyude@redhat.com> References: <20180829213651.20874-1-lyude@redhat.com> X-Scanned-By: MIMEDefang 2.78 on 10.11.54.3 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.5]); Wed, 29 Aug 2018 21:37:08 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.5]); Wed, 29 Aug 2018 21:37:08 +0000 (UTC) for IP:'10.11.54.3' DOMAIN:'int-mx03.intmail.prod.int.rdu2.redhat.com' HELO:'smtp.corp.redhat.com' FROM:'lyude@redhat.com' RCPT:'' X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Karol Herbst , David Airlie , linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, Ben Skeggs , Jeffery Miller MIME-Version: 1.0 Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" X-Virus-Scanned: ClamAV using ClamSMTP There's literally no difference between any of the backlight init functions besides the backlight properties they set and the backlight callbacks that they set, so move all of the duplicated backlight init code out of there and into nouveau_backlight_init(). This gets rid of a lot of copy pasta! Changes since v1: - Some of the pre-refactor callbacks were storing nv_encoder in callback data for the backlight devices that they registered, as opposed to nouveau_drm. This got missed and caused some bugs that didn't originally appear on my setup (NULL kernel derefs) for some reason. So, fix this by finding the nouveau_encoder in nouveau_backlight_init(), and using that as the callback data for all gens instead even if they don't care about the encoder. Signed-off-by: Lyude Paul Cc: Jeffery Miller Cc: Karol Herbst --- drivers/gpu/drm/nouveau/nouveau_backlight.c | 160 +++++++++----------- 1 file changed, 72 insertions(+), 88 deletions(-) diff --git a/drivers/gpu/drm/nouveau/nouveau_backlight.c b/drivers/gpu/drm/nouveau/nouveau_backlight.c index 7ad90e7610a1..918eb9dbc113 100644 --- a/drivers/gpu/drm/nouveau/nouveau_backlight.c +++ b/drivers/gpu/drm/nouveau/nouveau_backlight.c @@ -65,7 +65,8 @@ nouveau_get_backlight_name(char backlight_name[BL_NAME_SIZE], static int nv40_get_intensity(struct backlight_device *bd) { - struct nouveau_drm *drm = bl_get_data(bd); + struct nouveau_encoder *nv_encoder = bl_get_data(bd); + struct nouveau_drm *drm = nouveau_drm(nv_encoder->base.base.dev); struct nvif_object *device = &drm->client.device.object; int val = (nvif_rd32(device, NV40_PMC_BACKLIGHT) & NV40_PMC_BACKLIGHT_MASK) >> 16; @@ -76,7 +77,8 @@ nv40_get_intensity(struct backlight_device *bd) static int nv40_set_intensity(struct backlight_device *bd) { - struct nouveau_drm *drm = bl_get_data(bd); + struct nouveau_encoder *nv_encoder = bl_get_data(bd); + struct nouveau_drm *drm = nouveau_drm(nv_encoder->base.base.dev); struct nvif_object *device = &drm->client.device.object; int val = bd->props.brightness; int reg = nvif_rd32(device, NV40_PMC_BACKLIGHT); @@ -94,48 +96,20 @@ static const struct backlight_ops nv40_bl_ops = { }; static int -nv40_backlight_init(struct drm_connector *connector) +nv40_backlight_init(struct nouveau_encoder *encoder, + struct backlight_properties *props, + const struct backlight_ops **ops) { - struct nouveau_drm *drm = nouveau_drm(connector->dev); - struct nouveau_backlight *bl; + struct nouveau_drm *drm = nouveau_drm(encoder->base.base.dev); struct nvif_object *device = &drm->client.device.object; - struct backlight_properties props; - char backlight_name[BL_NAME_SIZE]; - int ret = 0; if (!(nvif_rd32(device, NV40_PMC_BACKLIGHT) & NV40_PMC_BACKLIGHT_MASK)) - return 0; - - bl = kzalloc(sizeof(*bl), GFP_KERNEL); - if (!bl) - return -ENOMEM; - - memset(&props, 0, sizeof(struct backlight_properties)); - props.type = BACKLIGHT_RAW; - props.max_brightness = 31; - if (!nouveau_get_backlight_name(backlight_name, bl)) { - NV_ERROR(drm, "Failed to retrieve a unique name for the backlight interface\n"); - goto fail_alloc; - } - - bl->dev = backlight_device_register(backlight_name, connector->kdev, - drm, &nv40_bl_ops, &props); - if (IS_ERR(bl->dev)) { - if (bl->id >= 0) - ida_simple_remove(&bl_ida, bl->id); - - ret = PTR_ERR(bl->dev); - goto fail_alloc; - } - - nouveau_connector(connector)->backlight = bl; - bl->dev->props.brightness = nv40_get_intensity(bl->dev); - backlight_update_status(bl->dev); + return -ENODEV; + props->type = BACKLIGHT_RAW; + props->max_brightness = 31; + *ops = &nv40_bl_ops; return 0; -fail_alloc: - kfree(bl); - return ret; } static int @@ -221,92 +195,102 @@ static const struct backlight_ops nva3_bl_ops = { }; static int -nv50_backlight_init(struct drm_connector *connector) +nv50_backlight_init(struct nouveau_encoder *nv_encoder, + struct backlight_properties *props, + const struct backlight_ops **ops) { - struct nouveau_drm *drm = nouveau_drm(connector->dev); + struct nouveau_drm *drm = nouveau_drm(nv_encoder->base.base.dev); struct nvif_object *device = &drm->client.device.object; - struct nouveau_encoder *nv_encoder; - struct nouveau_backlight *bl; - struct backlight_properties props; - const struct backlight_ops *ops; - char backlight_name[BL_NAME_SIZE]; - int ret = 0; - - nv_encoder = find_encoder(connector, DCB_OUTPUT_LVDS); - if (!nv_encoder) { - nv_encoder = find_encoder(connector, DCB_OUTPUT_DP); - if (!nv_encoder) - return -ENODEV; - } if (!nvif_rd32(device, NV50_PDISP_SOR_PWM_CTL(ffs(nv_encoder->dcb->or) - 1))) - return 0; - - bl = kzalloc(sizeof(*bl), GFP_KERNEL); - if (!bl) - return -ENOMEM; + return -ENODEV; if (drm->client.device.info.chipset <= 0xa0 || drm->client.device.info.chipset == 0xaa || drm->client.device.info.chipset == 0xac) - ops = &nv50_bl_ops; + *ops = &nv50_bl_ops; else - ops = &nva3_bl_ops; + *ops = &nva3_bl_ops; - memset(&props, 0, sizeof(struct backlight_properties)); - props.type = BACKLIGHT_RAW; - props.max_brightness = 100; - if (!nouveau_get_backlight_name(backlight_name, bl)) { - NV_ERROR(drm, "Failed to retrieve a unique name for the backlight interface\n"); - goto fail_alloc; - } + props->type = BACKLIGHT_RAW; + props->max_brightness = 100; - bl->dev = backlight_device_register(backlight_name, connector->kdev, - nv_encoder, ops, &props); - if (IS_ERR(bl->dev)) { - if (bl->id >= 0) - ida_simple_remove(&bl_ida, bl->id); - - ret = PTR_ERR(bl->dev); - goto fail_alloc; - } - - nouveau_connector(connector)->backlight = bl; - bl->dev->props.brightness = bl->dev->ops->get_brightness(bl->dev); - backlight_update_status(bl->dev); return 0; - -fail_alloc: - kfree(bl); - return ret; } int nouveau_backlight_init(struct drm_connector *connector) { struct nouveau_drm *drm = nouveau_drm(connector->dev); + struct nouveau_backlight *bl; + struct nouveau_encoder *nv_encoder = NULL; struct nvif_device *device = &drm->client.device; + char backlight_name[BL_NAME_SIZE]; + struct backlight_properties props = {0}; + const struct backlight_ops *ops; + int ret; if (apple_gmux_present()) { NV_INFO(drm, "Apple GMUX detected: not registering Nouveau backlight interface\n"); return 0; } - if (connector->connector_type != DRM_MODE_CONNECTOR_LVDS && - connector->connector_type != DRM_MODE_CONNECTOR_eDP) + if (connector->connector_type == DRM_MODE_CONNECTOR_LVDS) + nv_encoder = find_encoder(connector, DCB_OUTPUT_LVDS); + else if (connector->connector_type == DRM_MODE_CONNECTOR_eDP) + nv_encoder = find_encoder(connector, DCB_OUTPUT_DP); + else + return 0; + + if (!nv_encoder) return 0; switch (device->info.family) { case NV_DEVICE_INFO_V0_CURIE: - return nv40_backlight_init(connector); + ret = nv40_backlight_init(nv_encoder, &props, &ops); + break; case NV_DEVICE_INFO_V0_TESLA: case NV_DEVICE_INFO_V0_FERMI: case NV_DEVICE_INFO_V0_KEPLER: case NV_DEVICE_INFO_V0_MAXWELL: - return nv50_backlight_init(connector); + ret = nv50_backlight_init(nv_encoder, &props, &ops); + break; default: return 0; } + + if (ret == -ENODEV) + return 0; + else if (ret) + return ret; + + bl = kzalloc(sizeof(*bl), GFP_KERNEL); + if (!bl) + return -ENOMEM; + + if (!nouveau_get_backlight_name(backlight_name, bl)) { + NV_ERROR(drm, "Failed to retrieve a unique name for the backlight interface\n"); + goto fail_alloc; + } + + bl->dev = backlight_device_register(backlight_name, connector->kdev, + nv_encoder, ops, &props); + if (IS_ERR(bl->dev)) { + if (bl->id >= 0) + ida_simple_remove(&bl_ida, bl->id); + ret = PTR_ERR(bl->dev); + goto fail_alloc; + } + + nouveau_connector(connector)->backlight = bl; + bl->dev->props.brightness = bl->dev->ops->get_brightness(bl->dev); + backlight_update_status(bl->dev); + + return 0; + +fail_alloc: + kfree(bl); + return ret; } void