Commit 58636385 authored by Alice Chao's avatar Alice Chao Committed by Martin K. Petersen
Browse files

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



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: default avatarAlice Chao <alice.chao@mediatek.com>
Reviewed-by: default avatarPeter Wang <peter.wang@mediatek.com>
Signed-off-by: default avatarPeter Wang <peter.wang@mediatek.com>
Link: https://lore.kernel.org/r/20250811131423.3444014-11-peter.wang@mediatek.com


Signed-off-by: default avatarMartin K. Petersen <martin.petersen@oracle.com>
parent 878ed88c

drivers/ufs/host/ufs-mediatek.c

+3 −0
Original line number Diff line number Diff line
@@ -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