ata: libata-eh: Reduce "disable device" message verbosity

There is no point in warning about a device being disabled when we
expect it to be, that is, on suspend, shutdown or when detaching the
device.

Suppress the message "disable device" for these cases by introducing the
EH static function ata_eh_dev_disable() and by using it in
ata_eh_unload() and ata_eh_detach_dev(). ata_dev_disable() code is
modified to call this new function after printing the "disable device"
message.

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-eh.c b/drivers/ata/libata-eh.c
index 67387d602735ac617c20dd57df0bce37ca92e6ef..945675f6b822066e7f43092df1265151e6bc926a 100644 (file)
--- a/drivers/ata/libata-eh.c
+++ b/drivers/ata/libata-eh.c
@@ -494,6 +494,18 @@ void ata_eh_release(struct ata_port *ap)
        mutex_unlock(&ap->host->eh_mutex);
 }
 
+static void ata_eh_dev_disable(struct ata_device *dev)
+{
+       ata_acpi_on_disable(dev);
+       ata_down_xfermask_limit(dev, ATA_DNXFER_FORCE_PIO0 | ATA_DNXFER_QUIET);
+       dev->class++;
+
+       /* From now till the next successful probe, ering is used to
+        * track probe failures.  Clear accumulated device error info.
+        */
+       ata_ering_clear(&dev->ering);
+}
+
 static void ata_eh_unload(struct ata_port *ap)
 {
        struct ata_link *link;
@@ -517,8 +529,8 @@ static void ata_eh_unload(struct ata_port *ap)
         */
        ata_for_each_link(link, ap, PMP_FIRST) {
                sata_scr_write(link, SCR_CONTROL, link->saved_scontrol & 0xff0);
-               ata_for_each_dev(dev, link, ALL)
-                       ata_dev_disable(dev);
+               ata_for_each_dev(dev, link, ENABLED)
+                       ata_eh_dev_disable(dev);
        }
 
        /* freeze and set UNLOADED */
@@ -1211,14 +1223,8 @@ void ata_dev_disable(struct ata_device *dev)
                return;
 
        ata_dev_warn(dev, "disable device\n");
-       ata_acpi_on_disable(dev);
-       ata_down_xfermask_limit(dev, ATA_DNXFER_FORCE_PIO0 | ATA_DNXFER_QUIET);
-       dev->class++;
 
-       /* From now till the next successful probe, ering is used to
-        * track probe failures.  Clear accumulated device error info.
-        */
-       ata_ering_clear(&dev->ering);
+       ata_eh_dev_disable(dev);
 }
 EXPORT_SYMBOL_GPL(ata_dev_disable);
 
@@ -1240,12 +1246,12 @@ void ata_eh_detach_dev(struct ata_device *dev)
 
        /*
         * If the device is still enabled, transition it to standby power mode
-        * (i.e. spin down HDDs).
+        * (i.e. spin down HDDs) and disable it.
         */
-       if (ata_dev_enabled(dev))
+       if (ata_dev_enabled(dev)) {
                ata_dev_power_set_standby(dev);
-
-       ata_dev_disable(dev);
+               ata_eh_dev_disable(dev);
+       }
 
        spin_lock_irqsave(ap->lock, flags);