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libata: Add helper ata_shost_to_port()

This commit is contained in:
Jeff Garzik 2006-04-11 13:12:34 -04:00
parent 381544bba3
commit 35bb94b116
5 changed files with 15 additions and 9 deletions
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4
drivers/scsi/libata-core.c
View File

@ -4659,7 +4659,7 @@ static struct ata_port * ata_host_add(const struct ata_probe_ent *ent,
host->transportt = &ata_scsi_transport_template;
ap = (struct ata_port *) &host->hostdata[0];
ap = ata_shost_to_port(host);
ata_host_init(ap, host, host_set, ent, port_no);
@ -4872,7 +4872,7 @@ void ata_host_set_remove(struct ata_host_set *host_set)
int ata_scsi_release(struct Scsi_Host *host)
{
struct ata_port *ap = (struct ata_port *) &host->hostdata[0];
struct ata_port *ap = ata_shost_to_port(host);
int i;
DPRINTK("ENTER\n");

4
drivers/scsi/libata-eh.c
View File

@ -64,7 +64,7 @@
enum scsi_eh_timer_return ata_scsi_timed_out(struct scsi_cmnd *cmd)
{
struct Scsi_Host *host = cmd->device->host;
struct ata_port *ap = (struct ata_port *) &host->hostdata[0];
struct ata_port *ap = ata_shost_to_port(host);
unsigned long flags;
struct ata_queued_cmd *qc;
enum scsi_eh_timer_return ret = EH_HANDLED;
@ -99,7 +99,7 @@ enum scsi_eh_timer_return ata_scsi_timed_out(struct scsi_cmnd *cmd)
*/
void ata_scsi_error(struct Scsi_Host *host)
{
struct ata_port *ap = (struct ata_port *)&host->hostdata[0];
struct ata_port *ap = ata_shost_to_port(host);
DPRINTK("ENTER\n");

8
drivers/scsi/libata-scsi.c
View File

@ -395,7 +395,7 @@ void ata_dump_status(unsigned id, struct ata_taskfile *tf)
int ata_scsi_device_resume(struct scsi_device *sdev)
{
struct ata_port *ap = (struct ata_port *) &sdev->host->hostdata[0];
struct ata_port *ap = ata_shost_to_port(sdev->host);
struct ata_device *dev = &ap->device[sdev->id];
return ata_device_resume(ap, dev);
@ -403,7 +403,7 @@ int ata_scsi_device_resume(struct scsi_device *sdev)
int ata_scsi_device_suspend(struct scsi_device *sdev, pm_message_t state)
{
struct ata_port *ap = (struct ata_port *) &sdev->host->hostdata[0];
struct ata_port *ap = ata_shost_to_port(sdev->host);
struct ata_device *dev = &ap->device[sdev->id];
return ata_device_suspend(ap, dev, state);
@ -704,7 +704,7 @@ int ata_scsi_slave_config(struct scsi_device *sdev)
struct ata_port *ap;
struct ata_device *dev;
ap = (struct ata_port *) &sdev->host->hostdata[0];
ap = ata_shost_to_port(sdev->host);
dev = &ap->device[sdev->id];
ata_scsi_dev_config(sdev, dev);
@ -2478,7 +2478,7 @@ int ata_scsi_queuecmd(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *))
struct scsi_device *scsidev = cmd->device;
struct Scsi_Host *shost = scsidev->host;
ap = (struct ata_port *) &shost->hostdata[0];
ap = ata_shost_to_port(shost);
spin_unlock(shost->host_lock);
spin_lock(&ap->host_set->lock);

2
drivers/scsi/sata_svw.c
View File

@ -257,7 +257,7 @@ static int k2_sata_proc_info(struct Scsi_Host *shost, char *page, char **start,
int len, index;
/* Find the ata_port */
ap = (struct ata_port *) &shost->hostdata[0];
ap = ata_shost_to_port(shost);
if (ap == NULL)
return 0;

6
include/linux/libata.h
View File

@ -33,6 +33,7 @@
#include <asm/io.h>
#include <linux/ata.h>
#include <linux/workqueue.h>
#include <scsi/scsi_host.h>
/*
* compile-time options: to be removed as soon as all the drivers are
@ -977,4 +978,9 @@ static inline void ata_pad_free(struct ata_port *ap, struct device *dev)
dma_free_coherent(dev, ATA_DMA_PAD_BUF_SZ, ap->pad, ap->pad_dma);
}
static inline struct ata_port *ata_shost_to_port(struct Scsi_Host *host)
{
return (struct ata_port *) &host->hostdata[0];
}
#endif /* __LINUX_LIBATA_H__ */