lkml.org 
[lkml]   [2019]   [Jul]   [4]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 2/7] drm/amd/powerplay: Use memset to initialize metrics structs
Date
clang warns:

drivers/gpu/drm/amd/amdgpu/../powerplay/navi10_ppt.c:601:33: warning:
suggest braces around initialization of subobject [-Wmissing-braces]
static SmuMetrics_t metrics = {0};
^
{}
drivers/gpu/drm/amd/amdgpu/../powerplay/navi10_ppt.c:905:26: warning:
suggest braces around initialization of subobject [-Wmissing-braces]
SmuMetrics_t metrics = {0};
^
{}
2 warnings generated.

One way to fix these warnings is to add additional braces like clang
suggests; however, there has been a bit of push back from some
maintainers[1][2], who just prefer memset as it is unambiguous, doesn't
depend on a particular compiler version[3], and properly initializes all
subobjects. Do that here so there are no more warnings.

[1]: https://lore.kernel.org/lkml/022e41c0-8465-dc7a-a45c-64187ecd9684@amd.com/
[2]: https://lore.kernel.org/lkml/20181128.215241.702406654469517539.davem@davemloft.net/
[3]: https://lore.kernel.org/lkml/20181116150432.2408a075@redhat.com/

Fixes: 98e1a543c7b1 ("drm/amd/powerplay: add function get current clock freq interface for navi10")
Fixes: ab43c4bf1cc8 ("drm/amd/powerplay: fix fan speed show error (for hwmon pwm)")
Link: https://github.com/ClangBuiltLinux/linux/issues/583
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
---
drivers/gpu/drm/amd/powerplay/navi10_ppt.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/amd/powerplay/navi10_ppt.c b/drivers/gpu/drm/amd/powerplay/navi10_ppt.c
index e00397f84b2f..f5d2ada05bc6 100644
--- a/drivers/gpu/drm/amd/powerplay/navi10_ppt.c
+++ b/drivers/gpu/drm/amd/powerplay/navi10_ppt.c
@@ -598,12 +598,14 @@ static int navi10_get_current_clk_freq_by_table(struct smu_context *smu,
enum smu_clk_type clk_type,
uint32_t *value)
{
- static SmuMetrics_t metrics = {0};
+ static SmuMetrics_t metrics;
int ret = 0, clk_id = 0;

if (!value)
return -EINVAL;

+ memset(&metrics, 0, sizeof(metrics));
+
ret = smu_update_table(smu, SMU_TABLE_SMU_METRICS, (void *)&metrics, false);
if (ret)
return ret;
@@ -902,12 +904,14 @@ static bool navi10_is_dpm_running(struct smu_context *smu)

static int navi10_get_fan_speed(struct smu_context *smu, uint16_t *value)
{
- SmuMetrics_t metrics = {0};
+ SmuMetrics_t metrics;
int ret = 0;

if (!value)
return -EINVAL;

+ memset(&metrics, 0, sizeof(metrics));
+
ret = smu_update_table(smu, SMU_TABLE_SMU_METRICS,
(void *)&metrics, false);
if (ret)
--
2.22.0
\
 
 \ /
  Last update: 2019-07-04 07:53    [W:0.161 / U:0.164 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site