From patchwork Sun May 24 10:14:41 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sean Wang X-Patchwork-Id: 11567273 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 4B3B114C0 for ; Sun, 24 May 2020 10:25:07 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id C758A2077D for ; Sun, 24 May 2020 10:25:06 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="qt0ytbJJ"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=mediatek.com header.i=@mediatek.com header.b="S1HfFC78" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org C758A2077D Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=mediatek.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-mediatek-bounces+patchwork-linux-mediatek=patchwork.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:Message-ID:Date:Subject:To :From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=K7OTitYOuWLTdfhHgJwR7tzJqI8vFuk6Q8oj96v9nK8=; b=qt0ytbJJdLnxWI AsU0ZkjY7o7oZylxuJ1yYkmVnqsLtXkqT626VZ/+pJuDG+o0369Ab92ZuKHxDANGxmLi6eEiXPD2f io8ZumJlAaSV0wnL6zDSXFR3TGQoG+hj9U0lSEfcZl/+mIvFHYxXe+qEw1r+hilxaCyLfUtwNYeoa qW1NrNiUCFP42p48Ky3alRyL5kjYFgTeAwLXf3YJoe8Ipd/oNqRbua3YDyoj4lWaj+jtD8kCX3jMa BKPHAzlIuGy+Yi6LzAWRfIvJnXLnUSh+HA5q8w9fgB4Wuv8Ewjspgfo2fnYiWU7j/fxCjvjeEUWam WtmkRAA3PB8Q5rU9UDOg==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1jcnoW-0001O7-Hb; Sun, 24 May 2020 10:25:04 +0000 Received: from mailgw01.mediatek.com ([216.200.240.184]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1jcnoT-0000gb-67 for linux-mediatek@lists.infradead.org; Sun, 24 May 2020 10:25:03 +0000 X-UUID: 61c2e8797e164de3bb7401ec4f659275-20200524 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=mediatek.com; s=dk; h=Content-Transfer-Encoding:Content-Type:MIME-Version:Message-ID:Date:Subject:CC:To:From; bh=hOzMYCZ3qsvYgw8bs4JJEy5VmWKuRRy/5B9rA8cNlEE=; b=S1HfFC78PLVuX2afd0UtVEi3+KZBJwc7t3mHpuswpYkzDBqlHFKK8LFReCGTV6VI6MtZQgeQiLOIoud5lVuPzypa4uBpz1HBqB99DKV7TlmRtwME5eiVnJMhhJH14A6uMtkmRiQH+JpuCKG/FICqg5Vxaickk5lyTEtGyfOZUNU=; X-UUID: 61c2e8797e164de3bb7401ec4f659275-20200524 Received: from mtkcas66.mediatek.inc [(172.29.193.44)] by mailgw01.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLS) with ESMTP id 700518193; Sun, 24 May 2020 02:24:47 -0800 Received: from mtkmbs08n2.mediatek.inc (172.21.101.56) by MTKMBS62N2.mediatek.inc (172.29.193.42) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Sun, 24 May 2020 03:14:51 -0700 Received: from mtkcas08.mediatek.inc (172.21.101.126) by mtkmbs08n2.mediatek.inc (172.21.101.56) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Sun, 24 May 2020 18:14:41 +0800 Received: from mtkswgap22.mediatek.inc (172.21.77.33) by mtkcas08.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Sun, 24 May 2020 18:14:40 +0800 From: To: , Subject: [PATCH] mt76: fix BUG: spinlock bad magic in mt76_dma_init Date: Sun, 24 May 2020 18:14:41 +0800 Message-ID: <54dc821bf69fe8e7ae017f221069a4f41ae37893.1590260648.git.sean.wang@mediatek.com> X-Mailer: git-send-email 1.7.9.5 MIME-Version: 1.0 X-TM-SNTS-SMTP: 4D90F55D31A314470E2E0E7DED0FDB3AADD4CE3F33CA5DB2C81192D7CF81C5A82000:8 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200524_032501_238340_BA1CDBC9 X-CRM114-Status: UNSURE ( 8.97 ) X-CRM114-Notice: Please train this message. X-Spam-Score: -0.2 (/) X-Spam-Report: SpamAssassin version 3.4.4 on bombadil.infradead.org summary: Content analysis details: (-0.2 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 SPF_PASS SPF: sender matches SPF record 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record 0.0 MIME_BASE64_TEXT RAW: Message text disguised using base64 encoding -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain 0.0 UNPARSEABLE_RELAY Informational: message has unparseable relay lines X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-mediatek@lists.infradead.org, sean.wang@mediatek.com, linux-wireless@vger.kernel.org, ryder.lee@mediatek.com Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+patchwork-linux-mediatek=patchwork.kernel.org@lists.infradead.org From: Sean Wang dma init should be done when dma have been allocated [ 2.361127] BUG: spinlock bad magic on CPU#0, modprobe/456 [ 2.361583] lock: 0xffffa1287525b3b8, .magic: 00000000, .owner: /-1, .owner_cpu: 0 [ 2.362250] CPU: 0 PID: 456 Comm: modprobe Not tainted 4.14.177 #5 [ 2.362751] Hardware name: HP Meep/Meep, BIOS Google_Meep.11297.75.0 06/17/2019 [ 2.363343] Call Trace: [ 2.363552] dump_stack+0x97/0xdb [ 2.363826] ? spin_bug+0xa6/0xb3 [ 2.364096] do_raw_spin_lock+0x6a/0x9a [ 2.364417] mt76_dma_rx_fill+0x44/0x1de [mt76] [ 2.364787] ? mt76_dma_kick_queue+0x18/0x18 [mt76] [ 2.365184] mt76_dma_init+0x53/0x85 [mt76] [ 2.365532] mt7615_dma_init+0x3d7/0x546 [mt7615e] [ 2.365928] mt7615_register_device+0xe6/0x1a0 [mt7615e] [ 2.366364] mt7615_mmio_probe+0x14b/0x171 [mt7615e] [ 2.366771] mt7615_pci_probe+0x118/0x13b [mt7615e] [ 2.367169] pci_device_probe+0xaf/0x13d [ 2.367491] driver_probe_device+0x284/0x2ca [ 2.367840] __driver_attach+0x7a/0x9e [ 2.368146] ? driver_attach+0x1f/0x1f [ 2.368451] bus_for_each_dev+0xa0/0xdb [ 2.368765] bus_add_driver+0x132/0x204 [ 2.369078] driver_register+0x8e/0xcd [ 2.369384] do_one_initcall+0x160/0x257 [ 2.369706] ? 0xffffffffc0240000 [ 2.369980] do_init_module+0x60/0x1bb [ 2.370286] load_module+0x18c2/0x1a2b [ 2.370596] ? kernel_read_file+0x141/0x1b9 [ 2.370937] ? kernel_read_file_from_fd+0x46/0x71 [ 2.371320] SyS_finit_module+0xcc/0xf0 [ 2.371636] do_syscall_64+0x6b/0xf7 [ 2.371930] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ 2.372344] RIP: 0033:0x7da218ae4199 [ 2.372637] RSP: 002b:00007fffd0608398 EFLAGS: 00000246 ORIG_RAX: 0000000000000139 [ 2.373252] RAX: ffffffffffffffda RBX: 00005a705449df90 RCX: 00007da218ae4199 [ 2.373833] RDX: 0000000000000000 RSI: 00005a7052e73bd8 RDI: 0000000000000006 [ 2.374411] RBP: 00007fffd06083e0 R08: 0000000000000000 R09: 00005a705449d540 [ 2.374989] R10: 0000000000000006 R11: 0000000000000246 R12: 0000000000000000 [ 2.375569] R13: 00005a705449def0 R14: 00005a7052e73bd8 R15: 0000000000000000 Fixes: d3377b78cec6 ("mt76: add HE phy modes and hardware queue") Signed-off-by: Sean Wang --- drivers/net/wireless/mediatek/mt76/dma.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/wireless/mediatek/mt76/dma.c b/drivers/net/wireless/mediatek/mt76/dma.c index 75e659774e07..eca39799f050 100644 --- a/drivers/net/wireless/mediatek/mt76/dma.c +++ b/drivers/net/wireless/mediatek/mt76/dma.c @@ -576,7 +576,7 @@ mt76_dma_init(struct mt76_dev *dev) init_dummy_netdev(&dev->napi_dev); - for (i = 0; i < ARRAY_SIZE(dev->q_rx); i++) { + for (i = 0; i < ARRAY_SIZE(dev->q_rx) && dev->q_rx[i].desc; i++) { netif_napi_add(&dev->napi_dev, &dev->napi[i], mt76_dma_rx_poll, 64); mt76_dma_rx_fill(dev, &dev->q_rx[i]);