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| author | Leo Li <sunpeng.li@amd.com> | 2022-09-28 10:42:21 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2022-09-29 09:42:50 -0400 |
| commit | 3ff4ccc3e938159c47c4dc3ed8e2b964c3604b50 (patch) | |
| tree | fdb4919aac4b5627b224b4f38d62710241dd1b11 | |
| parent | ab5c467087c1e9868a7392306c3578d903a37b7f (diff) | |
| download | linux-3ff4ccc3e938159c47c4dc3ed8e2b964c3604b50.tar.bz2 | |
drm/amdgpu: Fix mc_umc_status used uninitialized warning
On ChromeOS clang build, the following warning is seen:
/mnt/host/source/src/third_party/kernel/v5.15/drivers/gpu/drm/amd/amdgpu/umc_v6_7.c:463:6: error: variable 'mc_umc_status' is used uninitialized whenever 'if' condition is false [-Werror,-Wsometimes-uninitialized]
if (mca_addr == UMC_INVALID_ADDR) {
^~~~~~~~~~~~~~~~~~~~~~~~~~~~
/mnt/host/source/src/third_party/kernel/v5.15/drivers/gpu/drm/amd/amdgpu/umc_v6_7.c:485:21: note: uninitialized use occurs here
if ((REG_GET_FIELD(mc_umc_status, MCA_UMC_UMC0_MCUMC_STATUST0, Val) == 1 &&
^~~~~~~~~~~~~
/mnt/host/source/src/third_party/kernel/v5.15/drivers/gpu/drm/amd/amdgpu/../amdgpu/amdgpu.h:1208:5: note: expanded from macro 'REG_GET_FIELD'
(((value) & REG_FIELD_MASK(reg, field)) >> REG_FIELD_SHIFT(reg, field))
^~~~~
/mnt/host/source/src/third_party/kernel/v5.15/drivers/gpu/drm/amd/amdgpu/umc_v6_7.c:463:2: note: remove the 'if' if its condition is always true
if (mca_addr == UMC_INVALID_ADDR) {
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/mnt/host/source/src/third_party/kernel/v5.15/drivers/gpu/drm/amd/amdgpu/umc_v6_7.c:460:24: note: initialize the variable 'mc_umc_status' to silence this warning
uint64_t mc_umc_status, mc_umc_addrt0;
^
= 0
1 error generated.
make[5]: *** [/mnt/host/source/src/third_party/kernel/v5.15/scripts/Makefile.build:289: drivers/gpu/drm/amd/amdgpu/umc_v6_7.o] Error 1
Fix by initializing mc_umc_status = 0.
Fixes: 1014bd1cb32552 ("drm/amdgpu: support to convert dedicated umc mca address")
Reviewed-by: Hamza Mahfooz <hamza.mahfooz@amd.com>
Signed-off-by: Leo Li <sunpeng.li@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/umc_v6_7.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/umc_v6_7.c b/drivers/gpu/drm/amd/amdgpu/umc_v6_7.c index 2cc961534542..a0d19b768346 100644 --- a/drivers/gpu/drm/amd/amdgpu/umc_v6_7.c +++ b/drivers/gpu/drm/amd/amdgpu/umc_v6_7.c @@ -457,7 +457,7 @@ static void umc_v6_7_query_error_address(struct amdgpu_device *adev, { uint32_t mc_umc_status_addr; uint32_t channel_index; - uint64_t mc_umc_status, mc_umc_addrt0; + uint64_t mc_umc_status = 0, mc_umc_addrt0; uint64_t err_addr, soc_pa, retired_page, column; if (mca_addr == UMC_INVALID_ADDR) { |