Commit 15ef3f5a authored by Peter Wang's avatar Peter Wang Committed by Martin K. Petersen
Browse files

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



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: default avatarPeter Wang <peter.wang@mediatek.com>
Signed-off-by: default avatarMartin K. Petersen <martin.petersen@oracle.com>
parent faac32d4

drivers/ufs/host/ufs-mediatek.c

+14 −1
Original line number Diff line number Diff line
@@ -1775,8 +1775,21 @@ static int ufs_mtk_resume(struct ufs_hba *hba, enum ufs_pm_op pm_op) 
	}



	return 0;



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)