[PATCH 3/3] drm/amdgpu: change if condition for bad channel bitmap update

[Tao Zhou]

The amdgpu_ras_eeprom_control.bad_channel_bitmap is u32 type, but the
channel index could be larger than 32. For the ASICs whose channel
number is more than 32, the amdgpu_dpm_send_hbm_bad_channel_flag
interface is not supported, so we simply bypass channel bitmap update under
this condition.

Signed-off-by: Tao Zhou <tao.zhou1 at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_ras_eeprom.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ras_eeprom.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ras_eeprom.c
index 8ced4be784e0..1c4433f22f4b 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ras_eeprom.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ras_eeprom.c
@@ -616,7 +616,8 @@ amdgpu_ras_eeprom_append_table(struct amdgpu_ras_eeprom_control *control,
 		__encode_table_record_to_buf(control, &record[i], pp);
 
 		/* update bad channel bitmap */
-		if (!(control->bad_channel_bitmap & (1 << record[i].mem_channel))) {
+		if ((record[i].mem_channel < sizeof(control->bad_channel_bitmap)) &&
+		    !(control->bad_channel_bitmap & (1 << record[i].mem_channel))) {
 			control->bad_channel_bitmap |= 1 << record[i].mem_channel;
 			con->update_channel_flag = true;
 		}
@@ -969,7 +970,8 @@ int amdgpu_ras_eeprom_read(struct amdgpu_ras_eeprom_control *control,
 		__decode_table_record_from_buf(control, &record[i], pp);
 
 		/* update bad channel bitmap */
-		if (!(control->bad_channel_bitmap & (1 << record[i].mem_channel))) {
+		if ((record[i].mem_channel < sizeof(control->bad_channel_bitmap)) &&
+		    !(control->bad_channel_bitmap & (1 << record[i].mem_channel))) {
 			control->bad_channel_bitmap |= 1 << record[i].mem_channel;
 			con->update_channel_flag = true;
 		}
-- 
2.35.1