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scsi: ufs: host: mediatek: Enhance recovery on resume failure

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Improve the recovery process for failed resume operations. Log the
device's power status and return 0 if both resume and recovery fail to
prevent I/O hang.

Signed-off-by: Peter Wang <peter.wang@mediatek.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Peter Wang 2025-09-03 10:44:38 +08:00 committed by Martin K. Petersen
parent faac32d4ec
commit 15ef3f5aa8
1 changed files with 14 additions and 1 deletions
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15
drivers/ufs/host/ufs-mediatek.c
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@ -1775,8 +1775,21 @@ static int ufs_mtk_resume(struct ufs_hba *hba, enum ufs_pm_op pm_op)
} }
return 0; return 0;
fail: fail:
return ufshcd_link_recovery(hba); /*
* Check if the platform (parent) device has resumed, and ensure that
* power, clock, and MTCMOS are all turned on.
*/
err = ufshcd_link_recovery(hba);
if (err) {
dev_err(hba->dev, "Device PM: req=%d, status:%d, err:%d\n",
hba->dev->power.request,
hba->dev->power.runtime_status,
hba->dev->power.runtime_error);
}
return 0; /* Cannot return a failure, otherwise, the I/O will hang. */
} }
static void ufs_mtk_dbg_register_dump(struct ufs_hba *hba) static void ufs_mtk_dbg_register_dump(struct ufs_hba *hba)