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Commit a836d3e8 authored by Tejun Heo's avatar Tejun Heo Committed by Jeff Garzik
Browse files

libata-sff: improve HSM violation reporting 



Improve SFF HSM violation reporting such that each HSM violation can
be distinguished using ehi_desc.

Signed-off-by: default avatarTejun Heo <tj@kernel.org>
Signed-off-by: default avatarJeff Garzik <jgarzik@redhat.com>
parent ea0c62f7

drivers/ata/libata-sff.c

+21 −9
Original line number Diff line number Diff line
@@ -1094,6 +1094,7 @@ static void ata_hsm_qc_complete(struct ata_queued_cmd *qc, int in_wq) 
int ata_sff_hsm_move(struct ata_port *ap, struct ata_queued_cmd *qc,

		     u8 status, int in_wq)

{

	struct ata_eh_info *ehi = &ap->link.eh_info;

	unsigned long flags = 0;

	int poll_next;
@@ -1125,9 +1126,12 @@ fsm_start: 
			if (likely(status & (ATA_ERR | ATA_DF)))

				/* device stops HSM for abort/error */

				qc->err_mask |= AC_ERR_DEV;

			else

			else {

				/* HSM violation. Let EH handle this */

				ata_ehi_push_desc(ehi,

					"ST_FIRST: !(DRQ|ERR|DF)");

				qc->err_mask |= AC_ERR_HSM;

			}



			ap->hsm_task_state = HSM_ST_ERR;

			goto fsm_start;
@@ -1146,9 +1150,9 @@ fsm_start: 
			 * the CDB.

			 */

			if (!(qc->dev->horkage & ATA_HORKAGE_STUCK_ERR)) {

				ata_port_printk(ap, KERN_WARNING,

				ata_ehi_push_desc(ehi, "ST_FIRST: "

					"DRQ=1 with device error, "

						"dev_stat 0x%X\n", status);

					"dev_stat 0x%X", status);

				qc->err_mask |= AC_ERR_HSM;

				ap->hsm_task_state = HSM_ST_ERR;

				goto fsm_start;
@@ -1205,9 +1209,9 @@ fsm_start: 
			 * let the EH abort the command or reset the device.

			 */

			if (unlikely(status & (ATA_ERR | ATA_DF))) {

				ata_port_printk(ap, KERN_WARNING, "DRQ=1 with "

						"device error, dev_stat 0x%X\n",

						status);

				ata_ehi_push_desc(ehi, "ST-ATAPI: "

					"DRQ=1 with device error, "

					"dev_stat 0x%X", status);

				qc->err_mask |= AC_ERR_HSM;

				ap->hsm_task_state = HSM_ST_ERR;

				goto fsm_start;
@@ -1226,13 +1230,17 @@ fsm_start: 
				if (likely(status & (ATA_ERR | ATA_DF)))

					/* device stops HSM for abort/error */

					qc->err_mask |= AC_ERR_DEV;

				else

				else {

					/* HSM violation. Let EH handle this.

					 * Phantom devices also trigger this

					 * condition.  Mark hint.

					 */

					ata_ehi_push_desc(ehi, "ST-ATA: "

						"DRQ=1 with device error, "

						"dev_stat 0x%X", status);

					qc->err_mask |= AC_ERR_HSM |

							AC_ERR_NODEV_HINT;

				}



				ap->hsm_task_state = HSM_ST_ERR;

				goto fsm_start;
@@ -1257,8 +1265,12 @@ fsm_start: 
					status = ata_wait_idle(ap);

				}



				if (status & (ATA_BUSY | ATA_DRQ))

				if (status & (ATA_BUSY | ATA_DRQ)) {

					ata_ehi_push_desc(ehi, "ST-ATA: "

						"BUSY|DRQ persists on ERR|DF, "

						"dev_stat 0x%X", status);

					qc->err_mask |= AC_ERR_HSM;

				}



				/* ata_pio_sectors() might change the

				 * state to HSM_ST_LAST. so, the state