diff options
| author | Lang Yu <lang.yu@amd.com> | 2021-09-08 13:34:26 +0800 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2021-09-16 09:56:23 -0400 |
| commit | 8f48ba303dfb15dc354e95a3ade59dea4614123a (patch) | |
| tree | fc5f2c77923a69972eae1f2efe35dc30ae3cc6ab /drivers/gpu/drm/amd/pm/swsmu/smu_cmn.h | |
| parent | 2a54d110bd4393fe412ef2c9c2d05fcd92785d1a (diff) | |
drm/amdgpu: fix sysfs_emit/sysfs_emit_at warnings(v2)
sysfs_emit and sysfs_emit_at requrie a page boundary
aligned buf address. Make them happy!
v2: use an inline function.
Warning Log:
[ 492.545174] invalid sysfs_emit_at: buf:00000000f19bdfde at:0
[ 492.546416] WARNING: CPU: 7 PID: 1304 at fs/sysfs/file.c:765 sysfs_emit_at+0x4a/0xa0
[ 492.654805] Call Trace:
[ 492.655353] ? smu_cmn_get_metrics_table+0x40/0x50 [amdgpu]
[ 492.656780] vangogh_print_clk_levels+0x369/0x410 [amdgpu]
[ 492.658245] vangogh_common_print_clk_levels+0x77/0x80 [amdgpu]
[ 492.659733] ? preempt_schedule_common+0x18/0x30
[ 492.660713] smu_print_ppclk_levels+0x65/0x90 [amdgpu]
[ 492.662107] amdgpu_get_pp_od_clk_voltage+0x13d/0x190 [amdgpu]
[ 492.663620] dev_attr_show+0x1d/0x40
Signed-off-by: Lang Yu <lang.yu@amd.com>
Acked-by: Huang Rui <ray.huang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/pm/swsmu/smu_cmn.h')
| -rw-r--r-- | drivers/gpu/drm/amd/pm/swsmu/smu_cmn.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/pm/swsmu/smu_cmn.h b/drivers/gpu/drm/amd/pm/swsmu/smu_cmn.h index 16993daa2ae0..4054d9493e77 100644 --- a/drivers/gpu/drm/amd/pm/swsmu/smu_cmn.h +++ b/drivers/gpu/drm/amd/pm/swsmu/smu_cmn.h @@ -110,5 +110,18 @@ void smu_cmn_init_soft_gpu_metrics(void *table, uint8_t frev, uint8_t crev); int smu_cmn_set_mp1_state(struct smu_context *smu, enum pp_mp1_state mp1_state); +/* + * Helper function to make sysfs_emit_at() happy. Align buf to + * the current page boundary and record the offset. + */ +static inline void smu_cmn_get_sysfs_buf(char **buf, int *offset) +{ + if (!*buf || !offset) + return; + + *offset = offset_in_page(*buf); + *buf -= *offset; +} + #endif #endif |