diff options
| author | Jesse Zhang <[email protected]> | 2024-05-13 16:01:23 +0800 |
|---|---|---|
| committer | Alex Deucher <[email protected]> | 2024-05-13 16:12:02 -0400 |
| commit | f76059fe14395b37ba8d997eb0381b1b9e80a939 (patch) | |
| tree | 879bb3bdd38f3f876958febf7350051cb2ac7e13 | |
| parent | 76cb763e6ea62e838ccc8f7a1ea4246d690fccc9 (diff) | |
drm/amd/pm: check negtive return for table entries
Function hwmgr->hwmgr_func->get_num_of_pp_table_entries(hwmgr) returns a negative number
Signed-off-by: Jesse Zhang <[email protected]>
Suggested-by: Tim Huang <[email protected]>
Reviewed-by: Tim Huang <[email protected]>
Signed-off-by: Alex Deucher <[email protected]>
| -rw-r--r-- | drivers/gpu/drm/amd/pm/powerplay/hwmgr/pp_psm.c | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/drivers/gpu/drm/amd/pm/powerplay/hwmgr/pp_psm.c b/drivers/gpu/drm/amd/pm/powerplay/hwmgr/pp_psm.c index f4bd8e9357e2..18f00038d844 100644 --- a/drivers/gpu/drm/amd/pm/powerplay/hwmgr/pp_psm.c +++ b/drivers/gpu/drm/amd/pm/powerplay/hwmgr/pp_psm.c @@ -30,9 +30,8 @@ int psm_init_power_state_table(struct pp_hwmgr *hwmgr) { int result; unsigned int i; - unsigned int table_entries; struct pp_power_state *state; - int size; + int size, table_entries; if (hwmgr->hwmgr_func->get_num_of_pp_table_entries == NULL) return 0; @@ -40,15 +39,19 @@ int psm_init_power_state_table(struct pp_hwmgr *hwmgr) if (hwmgr->hwmgr_func->get_power_state_size == NULL) return 0; - hwmgr->num_ps = table_entries = hwmgr->hwmgr_func->get_num_of_pp_table_entries(hwmgr); + table_entries = hwmgr->hwmgr_func->get_num_of_pp_table_entries(hwmgr); - hwmgr->ps_size = size = hwmgr->hwmgr_func->get_power_state_size(hwmgr) + + size = hwmgr->hwmgr_func->get_power_state_size(hwmgr) + sizeof(struct pp_power_state); - if (table_entries == 0 || size == 0) { + if (table_entries <= 0 || size == 0) { pr_warn("Please check whether power state management is supported on this asic\n"); + hwmgr->num_ps = 0; + hwmgr->ps_size = 0; return 0; } + hwmgr->num_ps = table_entries; + hwmgr->ps_size = size; hwmgr->ps = kcalloc(table_entries, size, GFP_KERNEL); if (hwmgr->ps == NULL) |