From d4d8eaff78b1b0043e7674bead7018e4db8b03ba Mon Sep 17 00:00:00 2001
From: Gwendal Grignou <gwendal@google.com>
Date: Fri, 22 Jul 2011 13:48:32 -0700
Subject: [libata] Prevent warning during PMP error recovery

Cleanup sff_pio_task_link when a command is cancel while the
pio_task thread has been scheduled.

Signed-off-by: Gwendal Grignou <gwendal@google.com>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>

diff --git a/drivers/ata/libata-sff.c b/drivers/ata/libata-sff.c
index 996a7a5..c24127d 100644
--- a/drivers/ata/libata-sff.c
+++ b/drivers/ata/libata-sff.c
@@ -1333,6 +1333,7 @@ void ata_sff_flush_pio_task(struct ata_port *ap)
 
 	cancel_delayed_work_sync(&ap->sff_pio_task);
 	ap->hsm_task_state = HSM_ST_IDLE;
+	ap->sff_pio_task_link = NULL;
 
 	if (ata_msg_ctl(ap))
 		ata_port_dbg(ap, "%s: EXIT\n", __func__);
-- 
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