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Commit 03d619d6 authored by Asutosh Das's avatar Asutosh Das
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Revert "scsi: ufs: stub UFS shutdown handler" 



This reverts commit aa484ff4 ("scsi: ufs: stub UFS shutdown
handler").
This is reverted so as to enable PON (Power-off Notification).
PON would notify the ufs device of the incoming power-down
so that the device can prepare for the same before
the power to the device is cut.

CRs-fixed: 941978
Change-Id: Idee8691d769218d7e732c9b7f936a2c40946b239
Signed-off-by: default avatarAsutosh Das <asutoshd@codeaurora.org>
parent 4a91ea36

drivers/scsi/ufs/ufshcd.c

+16 −5
Original line number Diff line number Diff line
@@ -8654,11 +8654,22 @@ static inline void ufshcd_add_sysfs_nodes(struct ufs_hba *hba) 
 */

int ufshcd_shutdown(struct ufs_hba *hba)

{

	/*

	 * TODO: This function should send the power down notification to

	 * UFS device and then power off the UFS link. But we need to be sure

	 * that there will not be any new UFS requests issued after this.

	 */

	int ret = 0;



	if (ufshcd_is_ufs_dev_poweroff(hba) && ufshcd_is_link_off(hba))

		goto out;



	if (pm_runtime_suspended(hba->dev)) {

		ret = ufshcd_runtime_resume(hba);

		if (ret)

			goto out;

	}



	ret = ufshcd_suspend(hba, UFS_SHUTDOWN_PM);

out:

	if (ret)

		dev_err(hba->dev, "%s failed, err %d\n", __func__, ret);

	/* allow force shutdown even in case of errors */

	return 0;

}

EXPORT_SYMBOL(ufshcd_shutdown);