libata: s/ap->id/ap->print_id/g

ata_port has two different id fields - id and port_no.  id is
system-wide 1-based unique id for the port while port_no is 0-based
host-wide port number.  The former is primarily used to identify the
ATA port to the user in printk messages while the latter is used in
various places in libata core and LLDs to index the port inside the
host.

The two fields feel quite similar and sometimes ap->id is used in
place of ap->port_no, which is very difficult to spot.  This patch
renames ap->id to ap->print_id to reduce the possibility of such bugs.

Some printk messages are adjusted such that id string (ata%u[.%u])
isn't printed twice and/or to use ata_*_printk() instead of hardcoded
id format.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

1 files changed, 29 insertions, 29 deletions

diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
index 3adc2cf61f1..d3b4e25074c 100644
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -72,7 +72,7 @@ static unsigned int ata_dev_init_params(struct ata_device *dev,
 static unsigned int ata_dev_set_xfermode(struct ata_device *dev);
 static void ata_dev_xfermask(struct ata_device *dev);
 
-static unsigned int ata_unique_id = 1;
+static unsigned int ata_print_id = 1;
 static struct workqueue_struct *ata_wq;
 
 struct workqueue_struct *ata_aux_wq;
@@ -891,8 +891,8 @@ void ata_dev_select(struct ata_port *ap, unsigned int device,
 			   unsigned int wait, unsigned int can_sleep)
 {
 	if (ata_msg_probe(ap))
-		ata_port_printk(ap, KERN_INFO, "ata_dev_select: ENTER, ata%u: "
-				"device %u, wait %u\n", ap->id, device, wait);
+		ata_port_printk(ap, KERN_INFO, "ata_dev_select: ENTER, "
+				"device %u, wait %u\n", device, wait);
 
 	if (wait)
 		ata_wait_idle(ap);
@@ -1392,8 +1392,7 @@ int ata_dev_read_id(struct ata_device *dev, unsigned int *p_class,
 	int rc;
 
 	if (ata_msg_ctl(ap))
-		ata_dev_printk(dev, KERN_DEBUG, "%s: ENTER, host %u, dev %u\n",
-			       __FUNCTION__, ap->id, dev->devno);
+		ata_dev_printk(dev, KERN_DEBUG, "%s: ENTER\n", __FUNCTION__);
 
 	ata_dev_select(ap, dev->devno, 1, 1); /* select device 0/1 */
 
@@ -1430,7 +1429,7 @@ int ata_dev_read_id(struct ata_device *dev, unsigned int *p_class,
 	if (err_mask) {
 		if (err_mask & AC_ERR_NODEV_HINT) {
 			DPRINTK("ata%u.%d: NODEV after polling detection\n",
-				ap->id, dev->devno);
+				ap->print_id, dev->devno);
 			return -ENOENT;
 		}
 
@@ -1558,15 +1557,13 @@ int ata_dev_configure(struct ata_device *dev)
 	int rc;
 
 	if (!ata_dev_enabled(dev) && ata_msg_info(ap)) {
-		ata_dev_printk(dev, KERN_INFO,
-			       "%s: ENTER/EXIT (host %u, dev %u) -- nodev\n",
-			       __FUNCTION__, ap->id, dev->devno);
+		ata_dev_printk(dev, KERN_INFO, "%s: ENTER/EXIT -- nodev\n",
+			       __FUNCTION__);
 		return 0;
 	}
 
 	if (ata_msg_probe(ap))
-		ata_dev_printk(dev, KERN_DEBUG, "%s: ENTER, host %u, dev %u\n",
-			       __FUNCTION__, ap->id, dev->devno);
+		ata_dev_printk(dev, KERN_DEBUG, "%s: ENTER\n", __FUNCTION__);
 
 	/* set _SDD */
 	rc = ata_acpi_push_id(ap, dev->devno);
@@ -1610,8 +1607,9 @@ int ata_dev_configure(struct ata_device *dev)
 	if (dev->class == ATA_DEV_ATA) {
 		if (ata_id_is_cfa(id)) {
 			if (id[162] & 1) /* CPRM may make this media unusable */
-				ata_dev_printk(dev, KERN_WARNING, "ata%u: device %u  supports DRM functions and may not be fully accessable.\n",
-					ap->id, dev->devno);
+				ata_dev_printk(dev, KERN_WARNING,
+					       "supports DRM functions and may "
+					       "not be fully accessable.\n");
 			snprintf(revbuf, 7, "CFA");
 		}
 		else
@@ -2650,7 +2648,7 @@ static unsigned int ata_bus_softreset(struct ata_port *ap,
 {
 	struct ata_ioports *ioaddr = &ap->ioaddr;
 
-	DPRINTK("ata%u: bus reset via SRST\n", ap->id);
+	DPRINTK("ata%u: bus reset via SRST\n", ap->print_id);
 
 	/* software reset.  causes dev0 to be selected */
 	iowrite8(ap->ctl, ioaddr->ctl_addr);
@@ -2710,7 +2708,7 @@ void ata_bus_reset(struct ata_port *ap)
 	u8 err;
 	unsigned int dev0, dev1 = 0, devmask = 0;
 
-	DPRINTK("ENTER, host %u, port %u\n", ap->id, ap->port_no);
+	DPRINTK("ENTER, host %u, port %u\n", ap->print_id, ap->port_no);
 
 	/* determine if device 0/1 are present */
 	if (ap->flags & ATA_FLAG_SATA_RESET)
@@ -3779,7 +3777,7 @@ static int ata_sg_setup(struct ata_queued_cmd *qc)
 	struct scatterlist *lsg = &sg[qc->n_elem - 1];
 	int n_elem, pre_n_elem, dir, trim_sg = 0;
 
-	VPRINTK("ENTER, ata%u\n", ap->id);
+	VPRINTK("ENTER, ata%u\n", ap->print_id);
 	WARN_ON(!(qc->flags & ATA_QCFLAG_SG));
 
 	/* we must lengthen transfers to end on a 32-bit boundary */
@@ -4180,7 +4178,7 @@ static void atapi_pio_bytes(struct ata_queued_cmd *qc)
 	if (do_write != i_write)
 		goto err_out;
 
-	VPRINTK("ata%u: xfering %d bytes\n", ap->id, bytes);
+	VPRINTK("ata%u: xfering %d bytes\n", ap->print_id, bytes);
 
 	__atapi_pio_bytes(qc, bytes);
 
@@ -4297,7 +4295,7 @@ int ata_hsm_move(struct ata_port *ap, struct ata_queued_cmd *qc,
 
 fsm_start:
 	DPRINTK("ata%u: protocol %d task_state %d (dev_stat 0x%X)\n",
-		ap->id, qc->tf.protocol, ap->hsm_task_state, status);
+		ap->print_id, qc->tf.protocol, ap->hsm_task_state, status);
 
 	switch (ap->hsm_task_state) {
 	case HSM_ST_FIRST:
@@ -4330,8 +4328,8 @@ fsm_start:
 		 * let the EH abort the command or reset the device.
 		 */
 		if (unlikely(status & (ATA_ERR | ATA_DF))) {
-			printk(KERN_WARNING "ata%d: DRQ=1 with device error, dev_stat 0x%X\n",
-			       ap->id, status);
+			ata_port_printk(ap, KERN_WARNING, "DRQ=1 with device "
+					"error, dev_stat 0x%X\n", status);
 			qc->err_mask |= AC_ERR_HSM;
 			ap->hsm_task_state = HSM_ST_ERR;
 			goto fsm_start;
@@ -4388,8 +4386,9 @@ fsm_start:
 			 * let the EH abort the command or reset the device.
 			 */
 			if (unlikely(status & (ATA_ERR | ATA_DF))) {
-				printk(KERN_WARNING "ata%d: DRQ=1 with device error, dev_stat 0x%X\n",
-				       ap->id, status);
+				ata_port_printk(ap, KERN_WARNING, "DRQ=1 with "
+						"device error, dev_stat 0x%X\n",
+						status);
 				qc->err_mask |= AC_ERR_HSM;
 				ap->hsm_task_state = HSM_ST_ERR;
 				goto fsm_start;
@@ -4475,7 +4474,7 @@ fsm_start:
 
 		/* no more data to transfer */
 		DPRINTK("ata%u: dev %u command complete, drv_stat 0x%x\n",
-			ap->id, qc->dev->devno, status);
+			ap->print_id, qc->dev->devno, status);
 
 		WARN_ON(qc->err_mask);
 
@@ -5017,7 +5016,7 @@ inline unsigned int ata_host_intr (struct ata_port *ap,
 	u8 status, host_stat = 0;
 
 	VPRINTK("ata%u: protocol %d task_state %d\n",
-		ap->id, qc->tf.protocol, ap->hsm_task_state);
+		ap->print_id, qc->tf.protocol, ap->hsm_task_state);
 
 	/* Check whether we are expecting interrupt in this state */
 	switch (ap->hsm_task_state) {
@@ -5038,7 +5037,8 @@ inline unsigned int ata_host_intr (struct ata_port *ap,
 		    qc->tf.protocol == ATA_PROT_ATAPI_DMA) {
 			/* check status of DMA engine */
 			host_stat = ap->ops->bmdma_status(ap);
-			VPRINTK("ata%u: host_stat 0x%X\n", ap->id, host_stat);
+			VPRINTK("ata%u: host_stat 0x%X\n",
+				ap->print_id, host_stat);
 
 			/* if it's not our irq... */
 			if (!(host_stat & ATA_DMA_INTR))
@@ -5497,7 +5497,7 @@ void ata_port_init(struct ata_port *ap, struct ata_host *host,
 
 	ap->lock = &host->lock;
 	ap->flags = ATA_FLAG_DISABLED;
-	ap->id = ata_unique_id++;
+	ap->print_id = ata_print_id++;
 	ap->ctl = ATA_DEVCTL_OBS;
 	ap->host = host;
 	ap->dev = ent->dev;
@@ -5568,7 +5568,7 @@ static void ata_port_init_shost(struct ata_port *ap, struct Scsi_Host *shost)
 {
 	ap->scsi_host = shost;
 
-	shost->unique_id = ap->id;
+	shost->unique_id = ap->print_id;
 	shost->max_id = 16;
 	shost->max_lun = 1;
 	shost->max_channel = 1;
@@ -5832,9 +5832,9 @@ int ata_device_add(const struct ata_probe_ent *ent)
 			/* wait for EH to finish */
 			ata_port_wait_eh(ap);
 		} else {
-			DPRINTK("ata%u: bus probe begin\n", ap->id);
+			DPRINTK("ata%u: bus probe begin\n", ap->print_id);
 			rc = ata_bus_probe(ap);
-			DPRINTK("ata%u: bus probe end\n", ap->id);
+			DPRINTK("ata%u: bus probe end\n", ap->print_id);
 
 			if (rc) {
 				/* FIXME: do something useful here?