From e199fd422420d1620cf64fd9bdd4ff8bc255cc76 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Michel=20D=C3=A4nzer?= Date: Thu, 29 Mar 2012 16:47:43 +0200 Subject: [PATCH] drm/radeon: Don't dereference possibly-NULL pointer. MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Reported-by: Dan Carpenter Signed-off-by: Michel Dänzer Reviewed-by: Alex Deucher Signed-off-by: Dave Airlie --- drivers/gpu/drm/radeon/radeon_object.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/radeon/radeon_object.c b/drivers/gpu/drm/radeon/radeon_object.c index 6f70158d34e4..df6a4dbd93f8 100644 --- a/drivers/gpu/drm/radeon/radeon_object.c +++ b/drivers/gpu/drm/radeon/radeon_object.c @@ -241,7 +241,8 @@ int radeon_bo_pin_restricted(struct radeon_bo *bo, u32 domain, u64 max_offset, domain_start = bo->rdev->mc.vram_start; else domain_start = bo->rdev->mc.gtt_start; - WARN_ON_ONCE((*gpu_addr - domain_start) > max_offset); + WARN_ON_ONCE(max_offset < + (radeon_bo_gpu_offset(bo) - domain_start)); } return 0;