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libata: kill ata_ehi_schedule_probe()

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ata_ehi_schedule_probe() was created to hide details of link-resuming
reset magic.  Now that all the softreset workarounds are gone,
scheduling probe is very simple - set probe_mask and request RESET.
Kill ata_ehi_schedule_probe() and open code it.  This also increases
consistency as ata_ehi_schedule_probe() couldn't cover individual
device probings so they were open-coded even when the helper existed.

While at it, define ATA_ALL_DEVICES as mask of all possible devices on
a link and always use it when requesting probe on link level for
simplicity and consistency.  Setting extra bits in the probe_mask
doesn't hurt anybody.

Signed-off-by: Tejun Heo <htejun@gmail.com>
This commit is contained in:
Tejun Heo 2008-01-24 00:05:14 +09:00 committed by Jeff Garzik
parent 8cebf274dd
commit b558edddb1
5 changed files with 15 additions and 16 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/ata/libata-core.c
View File

@ -7156,8 +7156,7 @@ int ata_host_register(struct ata_host *host, struct scsi_host_template *sht)
/* kick EH for boot probing */
spin_lock_irqsave(ap->lock, flags);
ehi->probe_mask =
(1 << ata_link_max_devices(&ap->link)) - 1;
ehi->probe_mask |= ATA_ALL_DEVICES;
ehi->action |= ATA_EH_RESET;
ehi->flags |= ATA_EHI_NO_AUTOPSY | ATA_EHI_QUIET;

2
drivers/ata/libata-eh.c
View File

@ -1746,7 +1746,7 @@ static void ata_eh_link_autopsy(struct ata_link *link)
ata_eh_analyze_serror(link);
} else if (rc != -EOPNOTSUPP) {
/* SError read failed, force reset and probing */
ata_ehi_schedule_probe(&ehc->i);
ehc->i.probe_mask |= ATA_ALL_DEVICES;
ehc->i.action |= ATA_EH_RESET;
ehc->i.err_mask |= AC_ERR_OTHER;
}

12
drivers/ata/libata-pmp.c
View File

@ -435,7 +435,7 @@ static int sata_pmp_init_links(struct ata_port *ap, int nr_ports)
struct ata_eh_context *ehc = &link->eh_context;
link->flags = 0;
ehc->i.probe_mask |= 1;
ehc->i.probe_mask |= ATA_ALL_DEVICES;
ehc->i.action |= ATA_EH_RESET;
}
@ -831,8 +831,12 @@ static int sata_pmp_eh_recover_pmp(struct ata_port *ap,
ata_eh_thaw_port(ap);
/* PMP is reset, SErrors cannot be trusted, scan all */
ata_port_for_each_link(tlink, ap)
ata_ehi_schedule_probe(&tlink->eh_context.i);
ata_port_for_each_link(tlink, ap) {
struct ata_eh_context *ehc = &tlink->eh_context;
ehc->i.probe_mask |= ATA_ALL_DEVICES;
ehc->i.action |= ATA_EH_RESET;
}
}
/* If revalidation is requested, revalidate and reconfigure;
@ -847,7 +851,7 @@ static int sata_pmp_eh_recover_pmp(struct ata_port *ap,
tries--;
if (rc == -ENODEV) {
ehc->i.probe_mask |= 1;
ehc->i.probe_mask |= ATA_ALL_DEVICES;
detach = 1;
/* give it just two more chances */
tries = min(tries, 2);

2
drivers/ata/libata-scsi.c
View File

@ -3507,7 +3507,7 @@ static int ata_scsi_user_scan(struct Scsi_Host *shost, unsigned int channel,
ata_port_for_each_link(link, ap) {
struct ata_eh_info *ehi = &link->eh_info;
ehi->probe_mask |= (1 << ata_link_max_devices(link)) - 1;
ehi->probe_mask |= ATA_ALL_DEVICES;
ehi->action |= ATA_EH_RESET;
}
} else {

12
include/linux/libata.h
View File

@ -122,6 +122,8 @@ enum {
ATAPI_MAX_DRAIN = 16 << 10,
ATA_ALL_DEVICES = (1 << ATA_MAX_DEVICES) - 1,
ATA_SHT_EMULATED = 1,
ATA_SHT_CMD_PER_LUN = 1,
ATA_SHT_THIS_ID = -1,
@ -1089,17 +1091,11 @@ extern void ata_ehi_push_desc(struct ata_eh_info *ehi, const char *fmt, ...)
__attribute__ ((format (printf, 2, 3)));
extern void ata_ehi_clear_desc(struct ata_eh_info *ehi);
static inline void ata_ehi_schedule_probe(struct ata_eh_info *ehi)
{
ehi->action |= ATA_EH_RESET;
ehi->probe_mask |= (1 << ATA_MAX_DEVICES) - 1;
}
static inline void ata_ehi_hotplugged(struct ata_eh_info *ehi)
{
ata_ehi_schedule_probe(ehi);
ehi->probe_mask |= (1 << ATA_MAX_DEVICES) - 1;
ehi->flags |= ATA_EHI_HOTPLUGGED;
ehi->action |= ATA_EH_ENABLE_LINK;
ehi->action |= ATA_EH_RESET | ATA_EH_ENABLE_LINK;
ehi->err_mask |= AC_ERR_ATA_BUS;
}