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Commit cfeb0be9 authored by Subhash Jadavani's avatar Subhash Jadavani Committed by Can Guo
Browse files

scsi: ufs: add link lost error status detection 



If UIC_LINK_LOST error is detected, reinitialize the link again.

Change-Id: Icfcca65c39a1bd13fea9fff8d70c21560d00101f
Signed-off-by: default avatarSubhash Jadavani <subhashj@codeaurora.org>
Signed-off-by: default avatarCan Guo <cang@codeaurora.org>
parent 463d8c28

drivers/scsi/ufs/ufshcd.c

+8 −2
Original line number Original line Diff line number Diff line
@@ -6353,7 +6353,7 @@ static void ufshcd_err_handler(struct work_struct *work) 
	 * Dump controller state before resetting. Transfer requests state

	 * Dump controller state before resetting. Transfer requests state

	 * will be dump as part of the request completion.

	 * will be dump as part of the request completion.

	 */

	 */

	if ((hba->saved_err & (INT_FATAL_ERRORS | UIC_ERROR)) ||

	if ((hba->saved_err & (INT_FATAL_ERRORS | UIC_ERROR | UIC_LINK_LOST)) ||

	    hba->auto_h8_err) {

	    hba->auto_h8_err) {

		dev_err(hba->dev, "%s: saved_err 0x%x saved_uic_err 0x%x",

		dev_err(hba->dev, "%s: saved_err 0x%x saved_uic_err 0x%x",

			__func__, hba->saved_err, hba->saved_uic_err);

			__func__, hba->saved_err, hba->saved_uic_err);
@@ -6370,7 +6370,7 @@ static void ufshcd_err_handler(struct work_struct *work) 
		hba->auto_h8_err = false;

		hba->auto_h8_err = false;

	}

	}





	if ((hba->saved_err & INT_FATAL_ERRORS)

	if ((hba->saved_err & (INT_FATAL_ERRORS | UIC_LINK_LOST))

	    || hba->saved_ce_err || hba->force_host_reset ||

	    || hba->saved_ce_err || hba->force_host_reset ||

	    ((hba->saved_err & UIC_ERROR) &&

	    ((hba->saved_err & UIC_ERROR) &&

	    (hba->saved_uic_err & (UFSHCD_UIC_DL_PA_INIT_ERROR |

	    (hba->saved_uic_err & (UFSHCD_UIC_DL_PA_INIT_ERROR |
@@ -6649,6 +6649,12 @@ static irqreturn_t ufshcd_check_errors(struct ufs_hba *hba) 
	if (hba->errors & INT_FATAL_ERRORS || hba->ce_error)

	if (hba->errors & INT_FATAL_ERRORS || hba->ce_error)

		queue_eh_work = true;

		queue_eh_work = true;





	if (hba->errors & UIC_LINK_LOST) {

		dev_err(hba->dev, "%s: UIC_LINK_LOST received, errors 0x%x\n",

					__func__, hba->errors);

		queue_eh_work = true;

	}



	if (hba->errors & UIC_ERROR) {

	if (hba->errors & UIC_ERROR) {

		hba->uic_error = 0;

		hba->uic_error = 0;

		retval = ufshcd_update_uic_error(hba);

		retval = ufshcd_update_uic_error(hba);

drivers/scsi/ufs/ufshci.h

+1 −1
Original line number Original line Diff line number Diff line
@@ -154,7 +154,7 @@ enum { 




#define UFSHCD_UIC_MASK		(UIC_COMMAND_COMPL | UFSHCD_UIC_PWR_MASK)

#define UFSHCD_UIC_MASK		(UIC_COMMAND_COMPL | UFSHCD_UIC_PWR_MASK)





#define UFSHCD_ERROR_MASK	(UIC_ERROR |\

#define UFSHCD_ERROR_MASK	(UIC_ERROR | UIC_LINK_LOST |\

				DEVICE_FATAL_ERROR |\

				DEVICE_FATAL_ERROR |\

				CONTROLLER_FATAL_ERROR |\

				CONTROLLER_FATAL_ERROR |\

				SYSTEM_BUS_FATAL_ERROR |\

				SYSTEM_BUS_FATAL_ERROR |\