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[v2,8/8] scsi: ufs-mediatek: Fix invalid access to vccqx

Message ID 20220623035052.18802-9-stanley.chu@mediatek.com
State New
Headers show
Series Provide features and fixes in MediaTek UFS platform | expand

Commit Message

Stanley Chu June 23, 2022, 3:50 a.m. UTC 
From: Alice Chao <alice.chao@mediatek.com>

NULL pointer access issue was found for the regulator released
by ufs_mtk_vreg_fix_vccq(). Simply fix this issue by clearing
the released vreg pointer in ufs_hba struct.

Reviewed-by: Stanley Chu <stanley.chu@mediatek.com>
Signed-off-by: Alice Chao <alice.chao@mediatek.com>
Signed-off-by: Stanley Chu <stanley.chu@mediatek.com>
---
 drivers/ufs/host/ufs-mediatek.c | 1 +
 1 file changed, 1 insertion(+)
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Patch

diff --git a/drivers/ufs/host/ufs-mediatek.c b/drivers/ufs/host/ufs-mediatek.c
index 125d64e097f2..2404df9c3a01 100755
--- a/drivers/ufs/host/ufs-mediatek.c
+++ b/drivers/ufs/host/ufs-mediatek.c
@@ -758,6 +758,7 @@  static void ufs_mtk_vreg_fix_vccqx(struct ufs_hba *hba)
 		regulator_disable((*vreg_off)->reg);
 		devm_kfree(hba->dev, (*vreg_off)->name);
 		devm_kfree(hba->dev, *vreg_off);
+		*vreg_off = NULL;
 	}
 }