5.15-stable review patch. If anyone has any objections, please let me know.
------------------
From: Jesse Zhang <jesse.zhang@xxxxxxx>
[ Upstream commit f76059fe14395b37ba8d997eb0381b1b9e80a939 ]
Function hwmgr->hwmgr_func->get_num_of_pp_table_entries(hwmgr) returns a negative number
Signed-off-by: Jesse Zhang <Jesse.Zhang@xxxxxxx>
Suggested-by: Tim Huang <Tim.Huang@xxxxxxx>
Reviewed-by: Tim Huang <Tim.Huang@xxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/gpu/drm/amd/pm/powerplay/hwmgr/pp_psm.c | 13 ++++++++-----
1 file 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 1d829402cd2e..59b18395983a 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)
--
2.43.0
