diff options
| author | Dan Carpenter <dan.carpenter@oracle.com> | 2019-10-07 12:02:06 +0300 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2019-10-07 15:10:56 -0500 |
| commit | ea6d8811f18521a2188d1959f5fa2447e6bf5349 (patch) | |
| tree | c106a9c49d87d7137c4e380e666682b8ccbc66f8 /drivers/gpu | |
| parent | fa073f13a218627f1cfd5bca223d5938ee6cd985 (diff) | |
drm/amd/powerplay: Fix error handling in smu_init_fb_allocations()
The error handling is off by one. We should not free the first
"tables[i].bo" without decrementing "i" because that might result in a
double free. The second problem is that when an error occurs, then the
zeroth element "tables[0].bo" isn't freed.
I had make "i" signed int for the error handling to work, so I just
updated "ret" as well as a clean up.
Fixes: f96357a991b9 ("drm/amd/powerplay: implement smu_init(fini)_fb_allocations function")
Reviewed-by: Kevin Wang <kevin1.wang@amd.com>
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/amd/powerplay/amdgpu_smu.c | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/drivers/gpu/drm/amd/powerplay/amdgpu_smu.c b/drivers/gpu/drm/amd/powerplay/amdgpu_smu.c index f1fbbc8b77ee..c9266ea70331 100644 --- a/drivers/gpu/drm/amd/powerplay/amdgpu_smu.c +++ b/drivers/gpu/drm/amd/powerplay/amdgpu_smu.c @@ -896,8 +896,7 @@ static int smu_init_fb_allocations(struct smu_context *smu) struct amdgpu_device *adev = smu->adev; struct smu_table_context *smu_table = &smu->smu_table; struct smu_table *tables = smu_table->tables; - uint32_t i = 0; - int32_t ret = 0; + int ret, i; for (i = 0; i < SMU_TABLE_COUNT; i++) { if (tables[i].size == 0) @@ -915,7 +914,7 @@ static int smu_init_fb_allocations(struct smu_context *smu) return 0; failed: - for (; i > 0; i--) { + while (--i >= 0) { if (tables[i].size == 0) continue; amdgpu_bo_free_kernel(&tables[i].bo, |