On 1/24/2022 7:22 PM, trix@xxxxxxxxxx wrote:
From: Tom Rix <trix@xxxxxxxxxx>
clang static analysis reports this represenative problem
amdgpu_smu.c:144:18: warning: The left operand of '*' is a garbage value
return clk_freq * 100;
~~~~~~~~ ^
If there is no get_dpm_ultimate_freq function,
smu_get_dpm_freq_range returns success without setting the
output min,max parameters. Because this is an extern function,
set the min,max to 0 when there is no get_dpm_ultimate_freq.
Fixes: e5ef784b1e17 ("drm/amd/powerplay: revise calling chain on retrieving frequency range")
Signed-off-by: Tom Rix <trix@xxxxxxxxxx>
---
drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c b/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c
index 5ace30434e603..35fbe51f52eaa 100644
--- a/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c
+++ b/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c
@@ -121,11 +121,17 @@ int smu_get_dpm_freq_range(struct smu_context *smu,
if (!min && !max)
return -EINVAL;
- if (smu->ppt_funcs->get_dpm_ultimate_freq)
+ if (smu->ppt_funcs->get_dpm_ultimate_freq) {
ret = smu->ppt_funcs->get_dpm_ultimate_freq(smu,
clk_type,
min,
max);
+ } else {
return -ENOTSUPP; would be more appropriate.
Thanks,
Lijo
+ if (min)
+ *min = 0;
+ if (max)
+ *max = 0;
+ }
return ret;
}
