[SCSI] libata: implement minimal transport template for ->eh_timed_out

SCSI midlayer has moved hostt->eh_timed_out to transport template.  As
libata doesn't need full-blown transport support yet, implement
minimal transport for libata.  No transport class or whatsoever, just
empty transport template with ->eh_timed_out hook.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

drivers/scsi/ahci.c

@@ -207,7 +207,6 @@ static struct scsi_host_template ahci_sht = {
 	.name			= DRV_NAME,
 	.ioctl			= ata_scsi_ioctl,
 	.queuecommand		= ata_scsi_queuecmd,
-	.eh_timed_out		= ata_scsi_timed_out,
 	.eh_strategy_handler	= ata_scsi_error,
 	.can_queue		= ATA_DEF_QUEUE,
 	.this_id		= ATA_SHT_THIS_ID,

drivers/scsi/ata_piix.c

@@ -209,7 +209,6 @@ static struct scsi_host_template piix_sht = {
 	.name			= DRV_NAME,
 	.ioctl			= ata_scsi_ioctl,
 	.queuecommand		= ata_scsi_queuecmd,
-	.eh_timed_out		= ata_scsi_timed_out,
 	.eh_strategy_handler	= ata_scsi_error,
 	.can_queue		= ATA_DEF_QUEUE,
 	.this_id		= ATA_SHT_THIS_ID,

drivers/scsi/libata-core.c

@@ -4653,6 +4653,8 @@ static struct ata_port * ata_host_add(const struct ata_probe_ent *ent,
 	if (!host)
 		return NULL;
 
+	host->transportt = &ata_scsi_transport_template;
+
 	ap = (struct ata_port *) &host->hostdata[0];
 
 	ata_host_init(ap, host, host_set, ent, port_no);
@@ -5084,7 +5086,6 @@ EXPORT_SYMBOL_GPL(ata_busy_sleep);
 EXPORT_SYMBOL_GPL(ata_port_queue_task);
 EXPORT_SYMBOL_GPL(ata_scsi_ioctl);
 EXPORT_SYMBOL_GPL(ata_scsi_queuecmd);
-EXPORT_SYMBOL_GPL(ata_scsi_timed_out);
 EXPORT_SYMBOL_GPL(ata_scsi_error);
 EXPORT_SYMBOL_GPL(ata_scsi_slave_config);
 EXPORT_SYMBOL_GPL(ata_scsi_release);

drivers/scsi/libata-scsi.c

@@ -41,6 +41,7 @@
 #include <scsi/scsi_eh.h>
 #include <scsi/scsi_device.h>
 #include <scsi/scsi_request.h>
+#include <scsi/scsi_transport.h>
 #include <linux/libata.h>
 #include <linux/hdreg.h>
 #include <asm/uaccess.h>
@@ -52,6 +53,7 @@
 typedef unsigned int (*ata_xlat_func_t)(struct ata_queued_cmd *qc, const u8 *scsicmd);
 static struct ata_device *
 ata_scsi_find_dev(struct ata_port *ap, const struct scsi_device *scsidev);
+enum scsi_eh_timer_return ata_scsi_timed_out(struct scsi_cmnd *cmd);
 
 #define RW_RECOVERY_MPAGE 0x1
 #define RW_RECOVERY_MPAGE_LEN 12
@@ -92,6 +94,14 @@ static const u8 def_control_mpage[CONTROL_MPAGE_LEN] = {
 	0, 30	/* extended self test time, see 05-359r1 */
 };
 
+/*
+ * libata transport template.  libata doesn't do real transport stuff.
+ * It just needs the eh_timed_out hook.
+ */
+struct scsi_transport_template ata_scsi_transport_template = {
+	.eh_timed_out		= ata_scsi_timed_out,
+};
+
 
 static void ata_scsi_invalid_field(struct scsi_cmnd *cmd,
 				   void (*done)(struct scsi_cmnd *))

drivers/scsi/libata.h

@@ -57,6 +57,8 @@ extern int ata_cmd_ioctl(struct scsi_device *scsidev, void __user *arg);
 
 
 /* libata-scsi.c */
+extern struct scsi_transport_template ata_scsi_transport_template;
+
 extern void ata_scsi_scan_host(struct ata_port *ap);
 extern int ata_scsi_error(struct Scsi_Host *host);
 extern unsigned int ata_scsiop_inq_std(struct ata_scsi_args *args, u8 *rbuf,

drivers/scsi/pdc_adma.c

@@ -143,7 +143,6 @@ static struct scsi_host_template adma_ata_sht = {
 	.name			= DRV_NAME,
 	.ioctl			= ata_scsi_ioctl,
 	.queuecommand		= ata_scsi_queuecmd,
-	.eh_timed_out		= ata_scsi_timed_out,
 	.eh_strategy_handler	= ata_scsi_error,
 	.can_queue		= ATA_DEF_QUEUE,
 	.this_id		= ATA_SHT_THIS_ID,

drivers/scsi/sata_mv.c

@@ -378,7 +378,6 @@ static struct scsi_host_template mv_sht = {
 	.name			= DRV_NAME,
 	.ioctl			= ata_scsi_ioctl,
 	.queuecommand		= ata_scsi_queuecmd,
-	.eh_timed_out		= ata_scsi_timed_out,
 	.eh_strategy_handler	= ata_scsi_error,
 	.can_queue		= MV_USE_Q_DEPTH,
 	.this_id		= ATA_SHT_THIS_ID,

drivers/scsi/sata_nv.c

@@ -229,7 +229,6 @@ static struct scsi_host_template nv_sht = {
 	.name			= DRV_NAME,
 	.ioctl			= ata_scsi_ioctl,
 	.queuecommand		= ata_scsi_queuecmd,
-	.eh_timed_out		= ata_scsi_timed_out,
 	.eh_strategy_handler	= ata_scsi_error,
 	.can_queue		= ATA_DEF_QUEUE,
 	.this_id		= ATA_SHT_THIS_ID,

drivers/scsi/sata_promise.c

@@ -111,7 +111,6 @@ static struct scsi_host_template pdc_ata_sht = {
 	.name			= DRV_NAME,
 	.ioctl			= ata_scsi_ioctl,
 	.queuecommand		= ata_scsi_queuecmd,
-	.eh_timed_out		= ata_scsi_timed_out,
 	.eh_strategy_handler	= ata_scsi_error,
 	.can_queue		= ATA_DEF_QUEUE,
 	.this_id		= ATA_SHT_THIS_ID,

drivers/scsi/sata_qstor.c

@@ -132,7 +132,6 @@ static struct scsi_host_template qs_ata_sht = {
 	.name			= DRV_NAME,
 	.ioctl			= ata_scsi_ioctl,
 	.queuecommand		= ata_scsi_queuecmd,
-	.eh_timed_out		= ata_scsi_timed_out,
 	.eh_strategy_handler	= ata_scsi_error,
 	.can_queue		= ATA_DEF_QUEUE,
 	.this_id		= ATA_SHT_THIS_ID,

drivers/scsi/sata_sil.c

@@ -146,7 +146,6 @@ static struct scsi_host_template sil_sht = {
 	.name			= DRV_NAME,
 	.ioctl			= ata_scsi_ioctl,
 	.queuecommand		= ata_scsi_queuecmd,
-	.eh_timed_out		= ata_scsi_timed_out,
 	.eh_strategy_handler	= ata_scsi_error,
 	.can_queue		= ATA_DEF_QUEUE,
 	.this_id		= ATA_SHT_THIS_ID,

drivers/scsi/sata_sil24.c

@@ -281,7 +281,6 @@ static struct scsi_host_template sil24_sht = {
 	.name			= DRV_NAME,
 	.ioctl			= ata_scsi_ioctl,
 	.queuecommand		= ata_scsi_queuecmd,
-	.eh_timed_out		= ata_scsi_timed_out,
 	.eh_strategy_handler	= ata_scsi_error,
 	.can_queue		= ATA_DEF_QUEUE,
 	.this_id		= ATA_SHT_THIS_ID,

drivers/scsi/sata_sis.c

@@ -87,7 +87,6 @@ static struct scsi_host_template sis_sht = {
 	.name			= DRV_NAME,
 	.ioctl			= ata_scsi_ioctl,
 	.queuecommand		= ata_scsi_queuecmd,
-	.eh_timed_out		= ata_scsi_timed_out,
 	.eh_strategy_handler	= ata_scsi_error,
 	.can_queue		= ATA_DEF_QUEUE,
 	.this_id		= ATA_SHT_THIS_ID,

drivers/scsi/sata_svw.c

@@ -288,7 +288,6 @@ static struct scsi_host_template k2_sata_sht = {
 	.name			= DRV_NAME,
 	.ioctl			= ata_scsi_ioctl,
 	.queuecommand		= ata_scsi_queuecmd,
-	.eh_timed_out		= ata_scsi_timed_out,
 	.eh_strategy_handler	= ata_scsi_error,
 	.can_queue		= ATA_DEF_QUEUE,
 	.this_id		= ATA_SHT_THIS_ID,

drivers/scsi/sata_sx4.c

@@ -182,7 +182,6 @@ static struct scsi_host_template pdc_sata_sht = {
 	.name			= DRV_NAME,
 	.ioctl			= ata_scsi_ioctl,
 	.queuecommand		= ata_scsi_queuecmd,
-	.eh_timed_out		= ata_scsi_timed_out,
 	.eh_strategy_handler	= ata_scsi_error,
 	.can_queue		= ATA_DEF_QUEUE,
 	.this_id		= ATA_SHT_THIS_ID,

drivers/scsi/sata_uli.c

@@ -75,7 +75,6 @@ static struct scsi_host_template uli_sht = {
 	.name			= DRV_NAME,
 	.ioctl			= ata_scsi_ioctl,
 	.queuecommand		= ata_scsi_queuecmd,
-	.eh_timed_out		= ata_scsi_timed_out,
 	.eh_strategy_handler	= ata_scsi_error,
 	.can_queue		= ATA_DEF_QUEUE,
 	.this_id		= ATA_SHT_THIS_ID,

drivers/scsi/sata_via.c

@@ -94,7 +94,6 @@ static struct scsi_host_template svia_sht = {
 	.name			= DRV_NAME,
 	.ioctl			= ata_scsi_ioctl,
 	.queuecommand		= ata_scsi_queuecmd,
-	.eh_timed_out		= ata_scsi_timed_out,
 	.eh_strategy_handler	= ata_scsi_error,
 	.can_queue		= ATA_DEF_QUEUE,
 	.this_id		= ATA_SHT_THIS_ID,

drivers/scsi/sata_vsc.c

@@ -251,7 +251,6 @@ static struct scsi_host_template vsc_sata_sht = {
 	.name			= DRV_NAME,
 	.ioctl			= ata_scsi_ioctl,
 	.queuecommand		= ata_scsi_queuecmd,
-	.eh_timed_out		= ata_scsi_timed_out,
 	.eh_strategy_handler	= ata_scsi_error,
 	.can_queue		= ATA_DEF_QUEUE,
 	.this_id		= ATA_SHT_THIS_ID,

include/linux/libata.h

@@ -508,7 +508,6 @@ extern void ata_host_set_remove(struct ata_host_set *host_set);
 extern int ata_scsi_detect(struct scsi_host_template *sht);
 extern int ata_scsi_ioctl(struct scsi_device *dev, int cmd, void __user *arg);
 extern int ata_scsi_queuecmd(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *));
-extern enum scsi_eh_timer_return ata_scsi_timed_out(struct scsi_cmnd *cmd);
 extern int ata_scsi_error(struct Scsi_Host *host);
 extern void ata_eh_qc_complete(struct ata_queued_cmd *qc);
 extern void ata_eh_qc_retry(struct ata_queued_cmd *qc);