From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mikko Perttunen Subject: [PATCH 4/4] drm/tegra: Use u64_to_user_ptr helper Date: Fri, 18 Aug 2017 19:15:53 +0300 Message-ID: <20170818161553.27597-5-mperttunen@nvidia.com> References: <20170818161553.27597-1-mperttunen@nvidia.com> Return-path: In-Reply-To: <20170818161553.27597-1-mperttunen@nvidia.com> Sender: linux-kernel-owner@vger.kernel.org To: thierry.reding@gmail.com, jonathanh@nvidia.com Cc: digetx@gmail.com, dri-devel@lists.freedesktop.org, linux-tegra@vger.kernel.org, linux-kernel@vger.kernel.org, Mikko Perttunen List-Id: linux-tegra@vger.kernel.org Use the u64_to_user_ptr helper macro to cast IOCTL argument u64 values to user pointers instead of writing out the cast manually. Signed-off-by: Mikko Perttunen --- drivers/gpu/drm/tegra/drm.c | 9 ++++----- 1 file changed, 4 insertions(+), 5 deletions(-) diff --git a/drivers/gpu/drm/tegra/drm.c b/drivers/gpu/drm/tegra/drm.c index e3331a2bc082..78c98736b0a5 100644 --- a/drivers/gpu/drm/tegra/drm.c +++ b/drivers/gpu/drm/tegra/drm.c @@ -389,11 +389,10 @@ int tegra_drm_submit(struct tegra_drm_context *context, unsigned int num_relocs = args->num_relocs; unsigned int num_waitchks = args->num_waitchks; struct drm_tegra_cmdbuf __user *cmdbufs = - (void __user *)(uintptr_t)args->cmdbufs; - struct drm_tegra_reloc __user *relocs = - (void __user *)(uintptr_t)args->relocs; + u64_to_user_ptr(args->cmdbufs); + struct drm_tegra_reloc __user *relocs = u64_to_user_ptr(args->relocs); struct drm_tegra_waitchk __user *waitchks = - (void __user *)(uintptr_t)args->waitchks; + u64_to_user_ptr(args->waitchks); struct drm_tegra_syncpt syncpt; struct host1x *host1x = dev_get_drvdata(drm->dev->parent); struct host1x_syncpt *sp; @@ -520,7 +519,7 @@ int tegra_drm_submit(struct tegra_drm_context *context, } } - if (copy_from_user(&syncpt, (void __user *)(uintptr_t)args->syncpts, + if (copy_from_user(&syncpt, u64_to_user_ptr(args->syncpts), sizeof(syncpt))) { err = -EFAULT; goto fail; -- 2.14.1