* [PATCH] drm/amd/pm: set min,max to 0 if there is no get_dpm_ultimate_freq function
@ 2022-01-24 13:52 ` trix
0 siblings, 0 replies; 4+ messages in thread
From: trix @ 2022-01-24 13:52 UTC (permalink / raw)
To: evan.quan, alexander.deucher, christian.koenig, Xinhui.Pan,
airlied, daniel, nathan, ndesaulniers, lijo.lazar, darren.powell,
guchun.chen, Arunpravin.PaneerSelvam, andrey.grodzovsky
Cc: amd-gfx, dri-devel, linux-kernel, llvm, Tom Rix
From: Tom Rix <trix@redhat.com>
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@redhat.com>
---
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 {
+ if (min)
+ *min = 0;
+ if (max)
+ *max = 0;
+ }
return ret;
}
--
2.26.3
^ permalink raw reply related [flat|nested] 4+ messages in thread
* [PATCH] drm/amd/pm: set min, max to 0 if there is no get_dpm_ultimate_freq function
@ 2022-01-24 13:52 ` trix
0 siblings, 0 replies; 4+ messages in thread
From: trix @ 2022-01-24 13:52 UTC (permalink / raw)
To: evan.quan, alexander.deucher, christian.koenig, Xinhui.Pan,
airlied, daniel, nathan, ndesaulniers, lijo.lazar, darren.powell,
guchun.chen, Arunpravin.PaneerSelvam, andrey.grodzovsky
Cc: Tom Rix, llvm, dri-devel, amd-gfx, linux-kernel
From: Tom Rix <trix@redhat.com>
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@redhat.com>
---
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 {
+ if (min)
+ *min = 0;
+ if (max)
+ *max = 0;
+ }
return ret;
}
--
2.26.3
^ permalink raw reply related [flat|nested] 4+ messages in thread
* Re: [PATCH] drm/amd/pm: set min,max to 0 if there is no get_dpm_ultimate_freq function
2022-01-24 13:52 ` [PATCH] drm/amd/pm: set min, max " trix
@ 2022-01-24 14:22 ` Lazar, Lijo
-1 siblings, 0 replies; 4+ messages in thread
From: Lazar, Lijo @ 2022-01-24 14:22 UTC (permalink / raw)
To: trix, evan.quan, alexander.deucher, christian.koenig, Xinhui.Pan,
airlied, daniel, nathan, ndesaulniers, darren.powell,
guchun.chen, Arunpravin.PaneerSelvam, andrey.grodzovsky
Cc: amd-gfx, dri-devel, linux-kernel, llvm
On 1/24/2022 7:22 PM, trix@redhat.com wrote:
> From: Tom Rix <trix@redhat.com>
>
> 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@redhat.com>
> ---
> 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;
> }
>
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH] drm/amd/pm: set min,max to 0 if there is no get_dpm_ultimate_freq function
@ 2022-01-24 14:22 ` Lazar, Lijo
0 siblings, 0 replies; 4+ messages in thread
From: Lazar, Lijo @ 2022-01-24 14:22 UTC (permalink / raw)
To: trix, evan.quan, alexander.deucher, christian.koenig, Xinhui.Pan,
airlied, daniel, nathan, ndesaulniers, darren.powell,
guchun.chen, Arunpravin.PaneerSelvam, andrey.grodzovsky
Cc: llvm, dri-devel, amd-gfx, linux-kernel
On 1/24/2022 7:22 PM, trix@redhat.com wrote:
> From: Tom Rix <trix@redhat.com>
>
> 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@redhat.com>
> ---
> 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;
> }
>
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2022-01-24 14:23 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2022-01-24 13:52 [PATCH] drm/amd/pm: set min,max to 0 if there is no get_dpm_ultimate_freq function trix
2022-01-24 13:52 ` [PATCH] drm/amd/pm: set min, max " trix
2022-01-24 14:22 ` [PATCH] drm/amd/pm: set min,max " Lazar, Lijo
2022-01-24 14:22 ` Lazar, Lijo
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