[PATCH 4.19 194/219] drm/amdgpu: fix uninitialized variable pasid_mapping_needed

Greg Kroah-Hartman
2019-12-29T17:37:42Z

From: Colin Ian King <colin.king@canonical.com>

[ Upstream commit 17cf678a33c6196a3df4531fe5aec91384c9eeb5 ]

The boolean variable pasid_mapping_needed is not initialized and
there are code paths that do not assign it any value before it is
is read later. Fix this by initializing pasid_mapping_needed to
false.

Addresses-Coverity: ("Uninitialized scalar variable")
Fixes: 6817bf283b2b ("drm/amdgpu: grab the id mgr lock while accessing passid_mapping")
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
index 69fb90d9c485..f67c332b16a4 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
@@ -701,7 +701,7 @@ int amdgpu_vm_flush(struct amdgpu_ring *ring, struct amdgpu_job *job, bool need_
id->oa_size != job->oa_size);
bool vm_flush_needed = job->vm_needs_flush;
struct dma_fence *fence = NULL;
- bool pasid_mapping_needed;
+ bool pasid_mapping_needed = false;
unsigned patch_offset = 0;
int r;

--
2.20.1