[PATCH] drm/amdgpu_gem: fix error handling path in amdgpu_gem_va_update_vm

From: Gustavo A. R. Silva
Date: Thu Feb 15 2018 - 00:20:31 EST


Currently, if amdgpu_vm_bo_update() fails, the returned error
is being ignored.

Fix this by properly checking _r_ after calling amdgpu_vm_bo_update.
Also, remove redundant code just before label _error_.

Addresses-Coverity-ID: 1464280 ("Unused value")
Fixes: 0abc6878fc2d ("drm/amdgpu: update VM PDs after the PTs")
Signed-off-by: Gustavo A. R. Silva <gustavo@xxxxxxxxxxxxxx>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c
index e48b4ec..db85fc0 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c
@@ -523,12 +523,13 @@ static void amdgpu_gem_va_update_vm(struct amdgpu_device *adev,
goto error;

if (operation == AMDGPU_VA_OP_MAP ||
- operation == AMDGPU_VA_OP_REPLACE)
+ operation == AMDGPU_VA_OP_REPLACE) {
r = amdgpu_vm_bo_update(adev, bo_va, false);
+ if (r)
+ goto error;
+ }

r = amdgpu_vm_update_directories(adev, vm);
- if (r)
- goto error;

error:
if (r && r != -ERESTARTSYS)
--
2.7.4