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drm/amd/ras: use mutex to prevent concurrent access conflicts

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Use mutex to prevent concurrent access conflicts.

Signed-off-by: YiPeng Chai <YiPeng.Chai@amd.com>
Reviewed-by: Tao Zhou <tao.zhou1@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
YiPeng Chai 2026-05-12 10:04:07 +08:00 committed by Alex Deucher
parent 4073cdf671
commit d334319060
1 changed files with 14 additions and 5 deletions
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19
drivers/gpu/drm/amd/ras/rascore/ras_cmd.c
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@ -87,25 +87,31 @@ static int ras_cmd_get_group_bad_pages(struct ras_core_context *ras_core,
struct eeprom_umc_record record;
struct ras_cmd_bad_page_record *ras_cmd_record;
uint32_t i = 0, bp_cnt = 0, group_cnt = 0;
int ret = RAS_CMD__SUCCESS;
output_data->bp_in_group = 0;
output_data->group_index = 0;
mutex_lock(&ras_core->ras_umc.umc_lock);
bp_cnt = ras_umc_get_badpage_count(ras_core);
if (bp_cnt) {
output_data->group_index = group_index;
group_cnt = bp_cnt / RAS_CMD_MAX_BAD_PAGES_PER_GROUP
+ ((bp_cnt % RAS_CMD_MAX_BAD_PAGES_PER_GROUP) ? 1 : 0);
if (group_index >= group_cnt)
return RAS_CMD__ERROR_INVALID_INPUT_DATA;
if (group_index >= group_cnt) {
ret = RAS_CMD__ERROR_INVALID_INPUT_DATA;
goto out;
}
i = group_index * RAS_CMD_MAX_BAD_PAGES_PER_GROUP;
for (;
i < bp_cnt && output_data->bp_in_group < RAS_CMD_MAX_BAD_PAGES_PER_GROUP;
i++) {
if (ras_umc_get_badpage_record(ras_core, i, &record))
return RAS_CMD__ERROR_GENERIC;
if (ras_umc_get_badpage_record(ras_core, i, &record)) {
ret = RAS_CMD__ERROR_GENERIC;
goto out;
}
ras_cmd_record = &output_data->records[i % RAS_CMD_MAX_BAD_PAGES_PER_GROUP];
@ -115,7 +121,10 @@ static int ras_cmd_get_group_bad_pages(struct ras_core_context *ras_core,
}
}
output_data->bp_total_cnt = bp_cnt;
return RAS_CMD__SUCCESS;
out:
mutex_unlock(&ras_core->ras_umc.umc_lock);
return ret;
}
static int ras_cmd_get_bad_pages(struct ras_core_context *ras_core,