libata: initialize port_task when !CONFIG_ATA_SFF

commit f667fdbbbea8bcce6cf9f7acb51b7cb4c264cc61 upstream

ap->port_task was not initialized if !CONFIG_ATA_SFF later triggering
lockdep warning.  Make sure it's initialized.

Reported by Larry Finger.

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
index 79e3a8e7a84a36de25dea2bcb7161b7bcdcc6fd5..8228ae3f8a16b6b7ee01d543bbf19a640e51708c 100644 (file)
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -5259,6 +5259,8 @@ struct ata_port *ata_port_alloc(struct ata_host *host)
 
 #ifdef CONFIG_ATA_SFF
        INIT_DELAYED_WORK(&ap->port_task, ata_pio_task);
+#else
+       INIT_DELAYED_WORK(&ap->port_task, NULL);
 #endif
        INIT_DELAYED_WORK(&ap->hotplug_task, ata_scsi_hotplug);
        INIT_WORK(&ap->scsi_rescan_task, ata_scsi_dev_rescan);