ata: libata-core: Remove ata_port_suspend_async()

ata_port_suspend_async() is only called by ata_sas_port_suspend().
Modify ata_port_suspend() with an additional bool argument indicating an
asynchronous or synchronous suspend to allow removing that helper
function. With this change, the variable ata_port_resume_ehi can also be
removed and its value (ATA_EHI_XXX flags passed directly to
ata_port_request_pm().

Signed-off-by: Damien Le Moal <dlemoal@kernel.org>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Tested-by: Chia-Lin Kao (AceLan) <acelan.kao@canonical.com>
Tested-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>

diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
index a4d5d2fcf3b983651e18edd6080b214bc0058b0b..d72a2a2a61fd004942dfa7d8eaf36e3d88f75c23 100644 (file)
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -5166,18 +5166,8 @@ static void ata_port_request_pm(struct ata_port *ap, pm_message_t mesg,
                ata_port_wait_eh(ap);
 }
 
-/*
- * On some hardware, device fails to respond after spun down for suspend.  As
- * the device won't be used before being resumed, we don't need to touch the
- * device.  Ask EH to skip the usual stuff and proceed directly to suspend.
- *
- * http://thread.gmane.org/gmane.linux.ide/46764
- */
-static const unsigned int ata_port_suspend_ehi = ATA_EHI_QUIET
-                                                | ATA_EHI_NO_AUTOPSY
-                                                | ATA_EHI_NO_RECOVERY;
-
-static void ata_port_suspend(struct ata_port *ap, pm_message_t mesg)
+static void ata_port_suspend(struct ata_port *ap, pm_message_t mesg,
+                            bool async)
 {
        /*
         * We are about to suspend the port, so we do not care about
@@ -5187,20 +5177,18 @@ static void ata_port_suspend(struct ata_port *ap, pm_message_t mesg)
         */
        cancel_delayed_work_sync(&ap->scsi_rescan_task);
 
-       ata_port_request_pm(ap, mesg, 0, ata_port_suspend_ehi, false);
-}
-
-static void ata_port_suspend_async(struct ata_port *ap, pm_message_t mesg)
-{
        /*
-        * We are about to suspend the port, so we do not care about
-        * scsi_rescan_device() calls scheduled by previous resume operations.
-        * The next resume will schedule the rescan again. So cancel any rescan
-        * that is not done yet.
+        * On some hardware, device fails to respond after spun down for
+        * suspend. As the device will not be used until being resumed, we
+        * do not need to touch the device. Ask EH to skip the usual stuff
+        * and proceed directly to suspend.
+        *
+        * http://thread.gmane.org/gmane.linux.ide/46764
         */
-       cancel_delayed_work_sync(&ap->scsi_rescan_task);
-
-       ata_port_request_pm(ap, mesg, 0, ata_port_suspend_ehi, true);
+       ata_port_request_pm(ap, mesg, 0,
+                           ATA_EHI_QUIET | ATA_EHI_NO_AUTOPSY |
+                           ATA_EHI_NO_RECOVERY,
+                           async);
 }
 
 static int ata_port_pm_suspend(struct device *dev)
@@ -5210,7 +5198,7 @@ static int ata_port_pm_suspend(struct device *dev)
        if (pm_runtime_suspended(dev))
                return 0;
 
-       ata_port_suspend(ap, PMSG_SUSPEND);
+       ata_port_suspend(ap, PMSG_SUSPEND, false);
        return 0;
 }
 
@@ -5221,13 +5209,13 @@ static int ata_port_pm_freeze(struct device *dev)
        if (pm_runtime_suspended(dev))
                return 0;
 
-       ata_port_suspend(ap, PMSG_FREEZE);
+       ata_port_suspend(ap, PMSG_FREEZE, false);
        return 0;
 }
 
 static int ata_port_pm_poweroff(struct device *dev)
 {
-       ata_port_suspend(to_ata_port(dev), PMSG_HIBERNATE);
+       ata_port_suspend(to_ata_port(dev), PMSG_HIBERNATE, false);
        return 0;
 }
 
@@ -5279,7 +5267,7 @@ static int ata_port_runtime_idle(struct device *dev)
 
 static int ata_port_runtime_suspend(struct device *dev)
 {
-       ata_port_suspend(to_ata_port(dev), PMSG_AUTO_SUSPEND);
+       ata_port_suspend(to_ata_port(dev), PMSG_AUTO_SUSPEND, false);
        return 0;
 }
 
@@ -5309,7 +5297,7 @@ static const struct dev_pm_ops ata_port_pm_ops = {
  */
 void ata_sas_port_suspend(struct ata_port *ap)
 {
-       ata_port_suspend_async(ap, PMSG_SUSPEND);
+       ata_port_suspend(ap, PMSG_SUSPEND, true);
 }
 EXPORT_SYMBOL_GPL(ata_sas_port_suspend);