Merge branch 'upstream'

drivers/scsi/ahci.c

@@ -243,7 +243,7 @@ static const struct ata_port_operations ahci_ops = {
 	.port_stop		= ahci_port_stop,
 };
 
-static struct ata_port_info ahci_port_info[] = {
+static const struct ata_port_info ahci_port_info[] = {
 	/* board_ahci */
 	{
 		.sht		= &ahci_sht,
@@ -643,7 +643,8 @@ static void ahci_eng_timeout(struct ata_port *ap)
 	 	 * not being called from the SCSI EH.
 	 	 */
 		qc->scsidone = scsi_finish_command;
-		ata_qc_complete(qc, AC_ERR_OTHER);
+		qc->err_mask |= AC_ERR_OTHER;
+		ata_qc_complete(qc);
 	}
 
 	spin_unlock_irqrestore(&host_set->lock, flags);
@@ -664,7 +665,8 @@ static inline int ahci_host_intr(struct ata_port *ap, struct ata_queued_cmd *qc)
 	ci = readl(port_mmio + PORT_CMD_ISSUE);
 	if (likely((ci & 0x1) == 0)) {
 		if (qc) {
-			ata_qc_complete(qc, 0);
+			assert(qc->err_mask == 0);
+			ata_qc_complete(qc);
 			qc = NULL;
 		}
 	}
@@ -681,8 +683,10 @@ static inline int ahci_host_intr(struct ata_port *ap, struct ata_queued_cmd *qc)
 		/* command processing has stopped due to error; restart */
 		ahci_restart_port(ap, status);
 
-		if (qc)
-			ata_qc_complete(qc, err_mask);
+		if (qc) {
+			qc->err_mask |= AC_ERR_OTHER;
+			ata_qc_complete(qc);
+		}
 	}
 
 	return 1;

drivers/scsi/libata-core.c

@@ -606,7 +606,7 @@ void ata_rwcmd_protocol(struct ata_queued_cmd *qc)
 	tf->command = ata_rw_cmds[index + lba48 + write];
 }
 
-static const char * xfer_mode_str[] = {
+static const char * const xfer_mode_str[] = {
 	"UDMA/16",
 	"UDMA/25",
 	"UDMA/33",
@@ -1054,9 +1054,9 @@ static int ata_qc_wait_err(struct ata_queued_cmd *qc,
 
 	if (wait_for_completion_timeout(wait, 30 * HZ) < 1) {
 		/* timeout handling */
-		unsigned int err_mask = ac_err_mask(ata_chk_status(qc->ap));
+		qc->err_mask |= ac_err_mask(ata_chk_status(qc->ap));
 
-		if (!err_mask) {
+		if (!qc->err_mask) {
 			printk(KERN_WARNING "ata%u: slow completion (cmd %x)\n",
 			       qc->ap->id, qc->tf.command);
 		} else {
@@ -1065,7 +1065,7 @@ static int ata_qc_wait_err(struct ata_queued_cmd *qc,
 			rc = -EIO;
 		}
 
-		ata_qc_complete(qc, err_mask);
+		ata_qc_complete(qc);
 	}
 
 	return rc;
@@ -1176,6 +1176,7 @@ retry:
 				qc->cursg_ofs = 0;
 				qc->cursect = 0;
 				qc->nsect = 1;
+				qc->err_mask = 0;
 				goto retry;
 			}
 		}
@@ -2093,7 +2094,7 @@ static void ata_pr_blacklisted(const struct ata_port *ap,
 		ap->id, dev->devno);
 }
 
-static const char * ata_dma_blacklist [] = {
+static const char * const ata_dma_blacklist [] = {
 	"WDC AC11000H",
 	"WDC AC22100H",
 	"WDC AC32500H",
@@ -2787,14 +2788,14 @@ skip_map:
  *	None.  (grabs host lock)
  */
 
-void ata_poll_qc_complete(struct ata_queued_cmd *qc, unsigned int err_mask)
+void ata_poll_qc_complete(struct ata_queued_cmd *qc)
 {
 	struct ata_port *ap = qc->ap;
 	unsigned long flags;
 
 	spin_lock_irqsave(&ap->host_set->lock, flags);
 	ata_irq_on(ap);
-	ata_qc_complete(qc, err_mask);
+	ata_qc_complete(qc);
 	spin_unlock_irqrestore(&ap->host_set->lock, flags);
 }
 
@@ -2811,10 +2812,14 @@ void ata_poll_qc_complete(struct ata_queued_cmd *qc, unsigned int err_mask)
 
 static unsigned long ata_pio_poll(struct ata_port *ap)
 {
+	struct ata_queued_cmd *qc;
 	u8 status;
 	unsigned int poll_state = HSM_ST_UNKNOWN;
 	unsigned int reg_state = HSM_ST_UNKNOWN;
 
+	qc = ata_qc_from_tag(ap, ap->active_tag);
+	assert(qc != NULL);
+
 	switch (ap->hsm_task_state) {
 	case HSM_ST:
 	case HSM_ST_POLL:
@@ -2834,6 +2839,7 @@ static unsigned long ata_pio_poll(struct ata_port *ap)
 	status = ata_chk_status(ap);
 	if (status & ATA_BUSY) {
 		if (time_after(jiffies, ap->pio_task_timeout)) {
+			qc->err_mask |= AC_ERR_ATA_BUS;
 			ap->hsm_task_state = HSM_ST_TMOUT;
 			return 0;
 		}
@@ -2869,29 +2875,31 @@ static int ata_pio_complete (struct ata_port *ap)
 	 * msecs, then chk-status again.  If still busy, fall back to
 	 * HSM_ST_LAST_POLL state.
 	 */
-	drv_stat = ata_busy_wait(ap, ATA_BUSY | ATA_DRQ, 10);
-	if (drv_stat & (ATA_BUSY | ATA_DRQ)) {
+	drv_stat = ata_busy_wait(ap, ATA_BUSY, 10);
+	if (drv_stat & ATA_BUSY) {
 		msleep(2);
-		drv_stat = ata_busy_wait(ap, ATA_BUSY | ATA_DRQ, 10);
-		if (drv_stat & (ATA_BUSY | ATA_DRQ)) {
+		drv_stat = ata_busy_wait(ap, ATA_BUSY, 10);
+		if (drv_stat & ATA_BUSY) {
 			ap->hsm_task_state = HSM_ST_LAST_POLL;
 			ap->pio_task_timeout = jiffies + ATA_TMOUT_PIO;
 			return 1;
 		}
 	}
 
+	qc = ata_qc_from_tag(ap, ap->active_tag);
+	assert(qc != NULL);
+
 	drv_stat = ata_wait_idle(ap);
 	if (!ata_ok(drv_stat)) {
+		qc->err_mask |= __ac_err_mask(drv_stat);
 		ap->hsm_task_state = HSM_ST_ERR;
 		return 1;
 	}
 
-	qc = ata_qc_from_tag(ap, ap->active_tag);
-	assert(qc != NULL);
-
 	ap->hsm_task_state = HSM_ST_IDLE;
 
-	ata_poll_qc_complete(qc, 0);
+	assert(qc->err_mask == 0);
+	ata_poll_qc_complete(qc);
 
 	/* another command may start at this point */
 
@@ -3363,6 +3371,7 @@ static void atapi_pio_bytes(struct ata_queued_cmd *qc)
 err_out:
 	printk(KERN_INFO "ata%u: dev %u: ATAPI check failed\n",
 	      ap->id, dev->devno);
+	qc->err_mask |= AC_ERR_ATA_BUS;
 	ap->hsm_task_state = HSM_ST_ERR;
 }
 
@@ -3401,8 +3410,16 @@ static void ata_pio_block(struct ata_port *ap)
 	qc = ata_qc_from_tag(ap, ap->active_tag);
 	assert(qc != NULL);
 
+	/* check error */
+	if (status & (ATA_ERR | ATA_DF)) {
+		qc->err_mask |= AC_ERR_DEV;
+		ap->hsm_task_state = HSM_ST_ERR;
+		return;
+	}
+
+	/* transfer data if any */
 	if (is_atapi_taskfile(&qc->tf)) {
-		/* no more data to transfer or unsupported ATAPI command */
+		/* DRQ=0 means no more data to transfer */
 		if ((status & ATA_DRQ) == 0) {
 			ap->hsm_task_state = HSM_ST_LAST;
 			return;
@@ -3412,6 +3429,7 @@ static void ata_pio_block(struct ata_port *ap)
 	} else {
 		/* handle BSY=0, DRQ=0 as error */
 		if ((status & ATA_DRQ) == 0) {
+			qc->err_mask |= AC_ERR_ATA_BUS;
 			ap->hsm_task_state = HSM_ST_ERR;
 			return;
 		}
@@ -3431,9 +3449,14 @@ static void ata_pio_error(struct ata_port *ap)
 	qc = ata_qc_from_tag(ap, ap->active_tag);
 	assert(qc != NULL);
 
+	/* make sure qc->err_mask is available to 
+	 * know what's wrong and recover
+	 */
+	assert(qc->err_mask);
+
 	ap->hsm_task_state = HSM_ST_IDLE;
 
-	ata_poll_qc_complete(qc, AC_ERR_ATA_BUS);
+	ata_poll_qc_complete(qc);
 }
 
 static void ata_pio_task(void *_data)
@@ -3542,7 +3565,8 @@ static void ata_qc_timeout(struct ata_queued_cmd *qc)
 		ap->hsm_task_state = HSM_ST_IDLE;
 
 		/* complete taskfile transaction */
-		ata_qc_complete(qc, ac_err_mask(drv_stat));
+		qc->err_mask |= ac_err_mask(drv_stat);
+		ata_qc_complete(qc);
 		break;
 	}
 
@@ -3641,7 +3665,7 @@ struct ata_queued_cmd *ata_qc_new_init(struct ata_port *ap,
 	return qc;
 }
 
-int ata_qc_complete_noop(struct ata_queued_cmd *qc, unsigned int err_mask)
+int ata_qc_complete_noop(struct ata_queued_cmd *qc)
 {
 	return 0;
 }
@@ -3700,7 +3724,7 @@ void ata_qc_free(struct ata_queued_cmd *qc)
  *	spin_lock_irqsave(host_set lock)
  */
 
-void ata_qc_complete(struct ata_queued_cmd *qc, unsigned int err_mask)
+void ata_qc_complete(struct ata_queued_cmd *qc)
 {
 	int rc;
 
@@ -3717,7 +3741,7 @@ void ata_qc_complete(struct ata_queued_cmd *qc, unsigned int err_mask)
 	qc->flags &= ~ATA_QCFLAG_ACTIVE;
 
 	/* call completion callback */
-	rc = qc->complete_fn(qc, err_mask);
+	rc = qc->complete_fn(qc);
 
 	/* if callback indicates not to complete command (non-zero),
 	 * return immediately
@@ -4303,7 +4327,8 @@ fsm_start:
 		ap->hsm_task_state = HSM_ST_IDLE;
 
 		/* complete taskfile transaction */
-		ata_qc_complete(qc, ac_err_mask(status));
+		qc->err_mask |= ac_err_mask(status);
+		ata_qc_complete(qc);
 		break;
 
 	case HSM_ST_ERR:

drivers/scsi/libata-scsi.c

@@ -418,7 +418,7 @@ void ata_to_sense_error(unsigned id, u8 drv_stat, u8 drv_err, u8 *sk, u8 *asc,
 	int i;
 
 	/* Based on the 3ware driver translation table */
-	static unsigned char sense_table[][4] = {
+	static const unsigned char sense_table[][4] = {
 		/* BBD|ECC|ID|MAR */
 		{0xd1, 		ABORTED_COMMAND, 0x00, 0x00}, 	// Device busy                  Aborted command
 		/* BBD|ECC|ID */
@@ -449,7 +449,7 @@ void ata_to_sense_error(unsigned id, u8 drv_stat, u8 drv_err, u8 *sk, u8 *asc,
 		{0x80, 		MEDIUM_ERROR, 0x11, 0x04}, 	// Block marked bad		  Medium error, unrecovered read error
 		{0xFF, 0xFF, 0xFF, 0xFF}, // END mark
 	};
-	static unsigned char stat_table[][4] = {
+	static const unsigned char stat_table[][4] = {
 		/* Must be first because BUSY means no other bits valid */
 		{0x80, 		ABORTED_COMMAND, 0x47, 0x00},	// Busy, fake parity for now
 		{0x20, 		HARDWARE_ERROR,  0x00, 0x00}, 	// Device fault
@@ -1203,12 +1203,11 @@ nothing_to_do:
 	return 1;
 }
 
-static int ata_scsi_qc_complete(struct ata_queued_cmd *qc,
-				unsigned int err_mask)
+static int ata_scsi_qc_complete(struct ata_queued_cmd *qc)
 {
 	struct scsi_cmnd *cmd = qc->scsicmd;
 	u8 *cdb = cmd->cmnd;
- 	int need_sense = (err_mask != 0);
+ 	int need_sense = (qc->err_mask != 0);
 
 	/* For ATA pass thru (SAT) commands, generate a sense block if
 	 * user mandated it or if there's an error.  Note that if we
@@ -1532,7 +1531,7 @@ unsigned int ata_scsiop_inq_80(struct ata_scsi_args *args, u8 *rbuf,
 	return 0;
 }
 
-static const char *inq_83_str = "Linux ATA-SCSI simulator";
+static const char * const inq_83_str = "Linux ATA-SCSI simulator";
 
 /**
  *	ata_scsiop_inq_83 - Simulate INQUIRY EVPD page 83, device identity
@@ -1955,9 +1954,9 @@ void ata_scsi_badcmd(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *), u8
 	done(cmd);
 }
 
-static int atapi_sense_complete(struct ata_queued_cmd *qc,unsigned int err_mask)
+static int atapi_sense_complete(struct ata_queued_cmd *qc)
 {
-	if (err_mask && ((err_mask & AC_ERR_DEV) == 0))
+	if (qc->err_mask && ((qc->err_mask & AC_ERR_DEV) == 0))
 		/* FIXME: not quite right; we don't want the
 		 * translation of taskfile registers into
 		 * a sense descriptors, since that's only
@@ -2015,15 +2014,18 @@ static void atapi_request_sense(struct ata_queued_cmd *qc)
 
 	qc->complete_fn = atapi_sense_complete;
 
-	if (ata_qc_issue(qc))
-		ata_qc_complete(qc, AC_ERR_OTHER);
+	if (ata_qc_issue(qc)) {
+		qc->err_mask |= AC_ERR_OTHER;
+		ata_qc_complete(qc);
+	}
 
 	DPRINTK("EXIT\n");
 }
 
-static int atapi_qc_complete(struct ata_queued_cmd *qc, unsigned int err_mask)
+static int atapi_qc_complete(struct ata_queued_cmd *qc)
 {
 	struct scsi_cmnd *cmd = qc->scsicmd;
+	unsigned int err_mask = qc->err_mask;
 
 	VPRINTK("ENTER, err_mask 0x%X\n", err_mask);
 

drivers/scsi/libata.h

@@ -39,7 +39,7 @@ struct ata_scsi_args {
 
 /* libata-core.c */
 extern int atapi_enabled;
-extern int ata_qc_complete_noop(struct ata_queued_cmd *qc, unsigned int err_mask);
+extern int ata_qc_complete_noop(struct ata_queued_cmd *qc);
 extern struct ata_queued_cmd *ata_qc_new_init(struct ata_port *ap,
 				      struct ata_device *dev);
 extern void ata_rwcmd_protocol(struct ata_queued_cmd *qc);

drivers/scsi/pdc_adma.c

@@ -464,14 +464,12 @@ static inline unsigned int adma_intr_pkt(struct ata_host_set *host_set)
 			continue;
 		qc = ata_qc_from_tag(ap, ap->active_tag);
 		if (qc && (!(qc->tf.flags & ATA_TFLAG_POLLING))) {
-			unsigned int err_mask = 0;
-
 			if ((status & (aPERR | aPSD | aUIRQ)))
-				err_mask = AC_ERR_OTHER;
+				qc->err_mask |= AC_ERR_OTHER;
 			else if (pp->pkt[0] != cDONE)
-				err_mask = AC_ERR_OTHER;
+				qc->err_mask |= AC_ERR_OTHER;
 
-			ata_qc_complete(qc, err_mask);
+			ata_qc_complete(qc);
 		}
 	}
 	return handled;
@@ -501,7 +499,8 @@ static inline unsigned int adma_intr_mmio(struct ata_host_set *host_set)
 		
 				/* complete taskfile transaction */
 				pp->state = adma_state_idle;
-				ata_qc_complete(qc, ac_err_mask(status));
+				qc->err_mask |= ac_err_mask(status);
+				ata_qc_complete(qc);
 				handled = 1;
 			}
 		}

drivers/scsi/sata_mv.c

@@ -431,7 +431,7 @@ static const struct ata_port_operations mv6_ops = {
 	.host_stop		= mv_host_stop,
 };
 
-static struct ata_port_info mv_port_info[] = {
+static const struct ata_port_info mv_port_info[] = {
 	{  /* chip_504x */
 		.sht		= &mv_sht,
 		.host_flags	= MV_COMMON_FLAGS,
@@ -1242,8 +1242,10 @@ static void mv_host_intr(struct ata_host_set *host_set, u32 relevant,
 				VPRINTK("port %u IRQ found for qc, "
 					"ata_status 0x%x\n", port,ata_status);
 				/* mark qc status appropriately */
-				if (!(qc->tf.flags & ATA_TFLAG_POLLING))
+				if (!(qc->tf.flags & ATA_TFLAG_POLLING)) {
+					qc->err_mask |= err_mask;
 					ata_qc_complete(qc, err_mask);
+				}
 			}
 		}
 	}
@@ -1864,7 +1866,8 @@ static void mv_eng_timeout(struct ata_port *ap)
 	 	 */
 		spin_lock_irqsave(&ap->host_set->lock, flags);
 		qc->scsidone = scsi_finish_command;
-		ata_qc_complete(qc, AC_ERR_OTHER);
+		qc->err_mask |= AC_ERR_OTHER;
+		ata_qc_complete(qc);
 		spin_unlock_irqrestore(&ap->host_set->lock, flags);
 	}
 }

drivers/scsi/sata_promise.c

@@ -158,7 +158,7 @@ static const struct ata_port_operations pdc_pata_ops = {
 	.host_stop		= ata_pci_host_stop,
 };
 
-static struct ata_port_info pdc_port_info[] = {
+static const struct ata_port_info pdc_port_info[] = {
 	/* board_2037x */
 	{
 		.sht		= &pdc_ata_sht,
@@ -404,7 +404,8 @@ static void pdc_eng_timeout(struct ata_port *ap)
 	case ATA_PROT_NODATA:
 		printk(KERN_ERR "ata%u: command timeout\n", ap->id);
 		drv_stat = ata_wait_idle(ap);
-		ata_qc_complete(qc, __ac_err_mask(drv_stat));
+		qc->err_mask |= __ac_err_mask(drv_stat);
+		ata_qc_complete(qc);
 		break;
 
 	default:
@@ -413,7 +414,8 @@ static void pdc_eng_timeout(struct ata_port *ap)
 		printk(KERN_ERR "ata%u: unknown timeout, cmd 0x%x stat 0x%x\n",
 		       ap->id, qc->tf.command, drv_stat);
 
-		ata_qc_complete(qc, ac_err_mask(drv_stat));
+		qc->err_mask |= ac_err_mask(drv_stat);
+		ata_qc_complete(qc);
 		break;
 	}
 
@@ -425,21 +427,21 @@ out:
 static inline unsigned int pdc_host_intr( struct ata_port *ap,
                                           struct ata_queued_cmd *qc)
 {
-	unsigned int handled = 0, err_mask = 0;
+	unsigned int handled = 0;
 	u32 tmp;
 	void __iomem *mmio = (void __iomem *) ap->ioaddr.cmd_addr + PDC_GLOBAL_CTL;
 
 	tmp = readl(mmio);
 	if (tmp & PDC_ERR_MASK) {
-		err_mask = AC_ERR_DEV;
+		qc->err_mask |= AC_ERR_DEV;
 		pdc_reset_port(ap);
 	}
 
 	switch (qc->tf.protocol) {
 	case ATA_PROT_DMA:
 	case ATA_PROT_NODATA:
-		err_mask |= ac_err_mask(ata_wait_idle(ap));
-		ata_qc_complete(qc, err_mask);
+		qc->err_mask |= ac_err_mask(ata_wait_idle(ap));
+		ata_qc_complete(qc);
 		handled = 1;
 		break;
 
@@ -706,7 +708,7 @@ static int pdc_ata_init_one (struct pci_dev *pdev, const struct pci_device_id *e
 		probe_ent->port[3].scr_addr = base + 0x700;
 		break;
 	case board_2037x:
-       		probe_ent->n_ports = 2;
+		probe_ent->n_ports = 2;
 		break;
 	case board_20619:
 		probe_ent->n_ports = 4;
@@ -716,7 +718,7 @@ static int pdc_ata_init_one (struct pci_dev *pdev, const struct pci_device_id *e
 
 		probe_ent->port[2].scr_addr = base + 0x600;
 		probe_ent->port[3].scr_addr = base + 0x700;
-                break;
+		break;
 	default:
 		BUG();
 		break;

drivers/scsi/sata_qstor.c

@@ -170,7 +170,7 @@ static const struct ata_port_operations qs_ata_ops = {
 	.bmdma_status		= qs_bmdma_status,
 };
 
-static struct ata_port_info qs_port_info[] = {
+static const struct ata_port_info qs_port_info[] = {
 	/* board_2068_idx */
 	{
 		.sht		= &qs_ata_sht,
@@ -408,8 +408,8 @@ static inline unsigned int qs_intr_pkt(struct ata_host_set *host_set)
 					case 3: /* device error */
 						pp->state = qs_state_idle;
 						qs_enter_reg_mode(qc->ap);
-						ata_qc_complete(qc,
-							ac_err_mask(sDST));
+						qc->err_mask |= ac_err_mask(sDST);
+						ata_qc_complete(qc);
 						break;
 					default:
 						break;
@@ -446,7 +446,8 @@ static inline unsigned int qs_intr_mmio(struct ata_host_set *host_set)
 
 				/* complete taskfile transaction */
 				pp->state = qs_state_idle;
-				ata_qc_complete(qc, ac_err_mask(status));
+				qc->err_mask |= ac_err_mask(status);
+				ata_qc_complete(qc);
 				handled = 1;
 			}
 		}

drivers/scsi/sata_sil.c

@@ -176,7 +176,7 @@ static const struct ata_port_operations sil_ops = {
 	.host_stop		= ata_pci_host_stop,
 };
 
-static struct ata_port_info sil_port_info[] = {
+static const struct ata_port_info sil_port_info[] = {
 	/* sil_3112 */
 	{
 		.sht		= &sil_sht,

drivers/scsi/sata_sil24.c

@@ -654,7 +654,8 @@ static void sil24_eng_timeout(struct ata_port *ap)
 	 */
 	printk(KERN_ERR "ata%u: command timeout\n", ap->id);
 	qc->scsidone = scsi_finish_command;
-	ata_qc_complete(qc, AC_ERR_OTHER);
+	qc->err_mask |= AC_ERR_OTHER;
+	ata_qc_complete(qc);
 
 	sil24_reset_controller(ap);
 }
@@ -711,8 +712,10 @@ static void sil24_error_intr(struct ata_port *ap, u32 slot_stat)
 		sil24_reset_controller(ap);
 	}
 
-	if (qc)
-		ata_qc_complete(qc, err_mask);
+	if (qc) {
+		qc->err_mask |= err_mask;
+		ata_qc_complete(qc);
+	}
 }
 
 static inline void sil24_host_intr(struct ata_port *ap)
@@ -734,8 +737,10 @@ static inline void sil24_host_intr(struct ata_port *ap)
 		 */
 		sil24_update_tf(ap);
 
-		if (qc)
-			ata_qc_complete(qc, ac_err_mask(pp->tf.command));
+		if (qc) {
+			qc->err_mask |= ac_err_mask(pp->tf.command);
+			ata_qc_complete(qc);
+		}
 	} else
 		sil24_error_intr(ap, slot_stat);
 }

drivers/scsi/sata_sx4.c

@@ -215,7 +215,7 @@ static const struct ata_port_operations pdc_20621_ops = {
 	.host_stop		= pdc20621_host_stop,
 };
 
-static struct ata_port_info pdc_port_info[] = {
+static const struct ata_port_info pdc_port_info[] = {
 	/* board_20621 */
 	{
 		.sht		= &pdc_sata_sht,
@@ -719,7 +719,8 @@ static inline unsigned int pdc20621_host_intr( struct ata_port *ap,
 			VPRINTK("ata%u: read hdma, 0x%x 0x%x\n", ap->id,
 				readl(mmio + 0x104), readl(mmio + PDC_HDMA_CTLSTAT));
 			/* get drive status; clear intr; complete txn */
-			ata_qc_complete(qc, ac_err_mask(ata_wait_idle(ap)));
+			qc->err_mask |= ac_err_mask(ata_wait_idle(ap));
+			ata_qc_complete(qc);
 			pdc20621_pop_hdma(qc);
 		}
 
@@ -757,7 +758,8 @@ static inline unsigned int pdc20621_host_intr( struct ata_port *ap,
 			VPRINTK("ata%u: write ata, 0x%x 0x%x\n", ap->id,
 				readl(mmio + 0x104), readl(mmio + PDC_HDMA_CTLSTAT));
 			/* get drive status; clear intr; complete txn */
-			ata_qc_complete(qc, ac_err_mask(ata_wait_idle(ap)));
+			qc->err_mask |= ac_err_mask(ata_wait_idle(ap));
+			ata_qc_complete(qc);
 			pdc20621_pop_hdma(qc);
 		}
 		handled = 1;
@@ -767,7 +769,8 @@ static inline unsigned int pdc20621_host_intr( struct ata_port *ap,
 
 		status = ata_busy_wait(ap, ATA_BUSY | ATA_DRQ, 1000);
 		DPRINTK("BUS_NODATA (drv_stat 0x%X)\n", status);
-		ata_qc_complete(qc, ac_err_mask(status));
+		qc->err_mask |= ac_err_mask(status);
+		ata_qc_complete(qc);
 		handled = 1;
 
 	} else {
@@ -882,7 +885,8 @@ static void pdc_eng_timeout(struct ata_port *ap)
 	case ATA_PROT_DMA:
 	case ATA_PROT_NODATA:
 		printk(KERN_ERR "ata%u: command timeout\n", ap->id);
-		ata_qc_complete(qc, __ac_err_mask(ata_wait_idle(ap)));
+		qc->err_mask |= __ac_err_mask(ata_wait_idle(ap));
+		ata_qc_complete(qc);
 		break;
 
 	default:
@@ -891,7 +895,8 @@ static void pdc_eng_timeout(struct ata_port *ap)
 		printk(KERN_ERR "ata%u: unknown timeout, cmd 0x%x stat 0x%x\n",
 		       ap->id, qc->tf.command, drv_stat);
 
-		ata_qc_complete(qc, ac_err_mask(drv_stat));
+		qc->err_mask |= ac_err_mask(drv_stat);
+		ata_qc_complete(qc);
 		break;
 	}
 

include/linux/libata.h

@@ -197,7 +197,7 @@ struct ata_port;
 struct ata_queued_cmd;
 
 /* typedefs */
-typedef int (*ata_qc_cb_t) (struct ata_queued_cmd *qc, unsigned int err_mask);
+typedef int (*ata_qc_cb_t) (struct ata_queued_cmd *qc);
 
 struct ata_ioports {
 	unsigned long		cmd_addr;
@@ -282,6 +282,8 @@ struct ata_queued_cmd {
 	/* DO NOT iterate over __sg manually, use ata_for_each_sg() */
 	struct scatterlist	*__sg;
 
+	unsigned int		err_mask;
+
 	ata_qc_cb_t		complete_fn;
 
 	struct completion	*waiting;
@@ -476,7 +478,7 @@ extern void ata_bmdma_start (struct ata_queued_cmd *qc);
 extern void ata_bmdma_stop(struct ata_queued_cmd *qc);
 extern u8   ata_bmdma_status(struct ata_port *ap);
 extern void ata_bmdma_irq_clear(struct ata_port *ap);
-extern void ata_qc_complete(struct ata_queued_cmd *qc, unsigned int err_mask);
+extern void ata_qc_complete(struct ata_queued_cmd *qc);
 extern void ata_eng_timeout(struct ata_port *ap);
 extern void ata_scsi_simulate(u16 *id, struct scsi_cmnd *cmd,
 			      void (*done)(struct scsi_cmnd *));
@@ -668,6 +670,7 @@ static inline void ata_qc_reinit(struct ata_queued_cmd *qc)
 	qc->cursect = qc->cursg = qc->cursg_ofs = 0;
 	qc->nsect = 0;
 	qc->nbytes = qc->curbytes = 0;
+	qc->err_mask = 0;
 
 	ata_tf_init(qc->ap, &qc->tf, qc->dev->devno);
 }