libata: kill ata_ehi_schedule_probe()

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>

5 files changed, 15 insertions, 16 deletions

diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
index baef749ec528..4dc429fd0056 100644
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -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;
 
diff --git a/drivers/ata/libata-eh.c b/drivers/ata/libata-eh.c
index e6584fa7f456..0d0a2c0ab9e7 100644
--- a/drivers/ata/libata-eh.c
+++ b/drivers/ata/libata-eh.c
@@ -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;
         }
diff --git a/drivers/ata/libata-pmp.c b/drivers/ata/libata-pmp.c
index df1d3252b9e6..39e036c8a2bc 100644
--- a/drivers/ata/libata-pmp.c
+++ b/drivers/ata/libata-pmp.c
@@ -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);
diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c
index caffca7dd76f..798ba5e45710 100644
--- a/drivers/ata/libata-scsi.c
+++ b/drivers/ata/libata-scsi.c
@@ -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 {
diff --git a/include/linux/libata.h b/include/linux/libata.h
index 6eec11957e54..bc60132c7d33 100644
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -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;
 }