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FROMGIT: scsi: ufs: ufs-mediatek: Fix invalid access to vccqx

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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.

Link: https://lore.kernel.org/r/20220623035052.18802-9-stanley.chu@mediatek.com
Reviewed-by: Stanley Chu <stanley.chu@mediatek.com>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Alice Chao <alice.chao@mediatek.com>
Signed-off-by: Stanley Chu <stanley.chu@mediatek.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
(cherry picked from commit df1ea242e3 git://git.kernel.org/pub/scm/linux/kernel/git/mkp/scsi.git for-next)
Bug: 239946304
Signed-off-by: Bart Van Assche <bvanassche@google.com>
Change-Id: I572b4ff8a625c2309eb5d050e2c0b5bae882af7d
This commit is contained in:
Alice Chao
2022-06-23 11:50:52 +08:00
committed by Treehugger Robot
parent 946bad208c
commit 3d7f8111b8
1 changed files with 1 additions and 0 deletions
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1
drivers/ufs/host/ufs-mediatek.c
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@@ -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;
}
}