From patchwork Tue Jul 25 18:27:16 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Eric Anholt X-Patchwork-Id: 9862701 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id A1E356038C for ; Tue, 25 Jul 2017 18:27:29 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 9D9A22679B for ; Tue, 25 Jul 2017 18:27:29 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 92560284AF; Tue, 25 Jul 2017 18:27:29 +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=-4.2 required=2.0 tests=BAYES_00, 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 3E79E2679B for ; Tue, 25 Jul 2017 18:27:29 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id AC6916E33E; Tue, 25 Jul 2017 18:27:26 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from anholt.net (anholt.net [50.246.234.109]) by gabe.freedesktop.org (Postfix) with ESMTP id 867CD6E0E9 for ; Tue, 25 Jul 2017 18:27:23 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by anholt.net (Postfix) with ESMTP id 65C3810A1339; Tue, 25 Jul 2017 11:27:23 -0700 (PDT) X-Virus-Scanned: Debian amavisd-new at anholt.net Received: from anholt.net ([127.0.0.1]) by localhost (kingsolver.anholt.net [127.0.0.1]) (amavisd-new, port 10024) with LMTP id yJO0V-HVZ-kG; Tue, 25 Jul 2017 11:27:21 -0700 (PDT) Received: from eliezer.anholt.net (localhost [127.0.0.1]) by anholt.net (Postfix) with ESMTP id 0956D10A131C; Tue, 25 Jul 2017 11:27:19 -0700 (PDT) Received: by eliezer.anholt.net (Postfix, from userid 1000) id 2CAC62E1AC3; Tue, 25 Jul 2017 11:27:18 -0700 (PDT) From: Eric Anholt To: dri-devel@lists.freedesktop.org Subject: [PATCH v2 1/3] drm/vc4: Start using u64_to_user_ptr. Date: Tue, 25 Jul 2017 11:27:16 -0700 Message-Id: <20170725182718.31468-1-eric@anholt.net> X-Mailer: git-send-email 2.11.0 Cc: linux-kernel@vger.kernel.org X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" X-Virus-Scanned: ClamAV using ClamSMTP Chris Wilson pointed out this little cleanup in a review of new code, so let's fix up the code I was copying from. Signed-off-by: Eric Anholt Reviewed-by: Daniel Vetter --- drivers/gpu/drm/vc4/vc4_gem.c | 11 +++++------ 1 file changed, 5 insertions(+), 6 deletions(-) diff --git a/drivers/gpu/drm/vc4/vc4_gem.c b/drivers/gpu/drm/vc4/vc4_gem.c index d5b821ad06af..595f93f57821 100644 --- a/drivers/gpu/drm/vc4/vc4_gem.c +++ b/drivers/gpu/drm/vc4/vc4_gem.c @@ -119,7 +119,7 @@ vc4_get_hang_state_ioctl(struct drm_device *dev, void *data, bo_state[i].size = vc4_bo->base.base.size; } - if (copy_to_user((void __user *)(uintptr_t)get_state->bo, + if (copy_to_user(u64_to_user_ptr(get_state->bo), bo_state, state->bo_count * sizeof(*bo_state))) ret = -EFAULT; @@ -678,8 +678,7 @@ vc4_cl_lookup_bos(struct drm_device *dev, goto fail; } - if (copy_from_user(handles, - (void __user *)(uintptr_t)args->bo_handles, + if (copy_from_user(handles, u64_to_user_ptr(args->bo_handles), exec->bo_count * sizeof(uint32_t))) { ret = -EFAULT; DRM_ERROR("Failed to copy in GEM handles\n"); @@ -755,21 +754,21 @@ vc4_get_bcl(struct drm_device *dev, struct vc4_exec_info *exec) exec->shader_state_size = args->shader_rec_count; if (copy_from_user(bin, - (void __user *)(uintptr_t)args->bin_cl, + u64_to_user_ptr(args->bin_cl), args->bin_cl_size)) { ret = -EFAULT; goto fail; } if (copy_from_user(exec->shader_rec_u, - (void __user *)(uintptr_t)args->shader_rec, + u64_to_user_ptr(args->shader_rec), args->shader_rec_size)) { ret = -EFAULT; goto fail; } if (copy_from_user(exec->uniforms_u, - (void __user *)(uintptr_t)args->uniforms, + u64_to_user_ptr(args->uniforms), args->uniforms_size)) { ret = -EFAULT; goto fail;