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scsi: ufs: host: mediatek: Fix invalid access in vccqx handling

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Add a NULL check before accessing the 'vccqx' pointer to prevent invalid
memory access. This ensures that the function safely handles cases where
'vccq' and 'vccq2' are not initialized, improving the robustness of the
power management code.

Signed-off-by: Alice Chao <alice.chao@mediatek.com>
Reviewed-by: Peter Wang <peter.wang@mediatek.com>
Signed-off-by: Peter Wang <peter.wang@mediatek.com>
Link: https://lore.kernel.org/r/20250811131423.3444014-11-peter.wang@mediatek.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Alice Chao 2025-08-11 21:11:26 +08:00 committed by Martin K. Petersen
parent 878ed88c50
commit 5863638598
1 changed files with 3 additions and 0 deletions
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3
drivers/ufs/host/ufs-mediatek.c
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@ -1629,6 +1629,9 @@ static void ufs_mtk_vccqx_set_lpm(struct ufs_hba *hba, bool lpm)
{
struct ufs_vreg *vccqx = NULL;
if (!hba->vreg_info.vccq && !hba->vreg_info.vccq2)
return;
if (hba->vreg_info.vccq)
vccqx = hba->vreg_info.vccq;
else