linux-kernel - [PATCH 9/9] mtip32xx: increase wait time for hba reset

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Message-ID: <555133CC.5050306@micron.com>
Date:	Mon, 11 May 2015 15:57:16 -0700
From:	Asai Thambi SP <asamymuthupa@...ron.com>
To:	Jens Axboe <axboe@...nel.dk>
CC:	<linux-kernel@...r.kernel.org>,
	Sam Bradshaw <sbradshaw@...ron.com>,
	Selvan Mani <smani@...ron.com>
Subject: [PATCH 9/9] mtip32xx: increase wait time for hba reset

In LUN failure conditions, device takes longer time to complete the hba reset.
Increased wait time from 1 second to 10 seconds.

Signed-off-by: Sam Bradshaw <sbradshaw@...ron.com>
Signed-off-by: Asai Thambi S P <asamymuthupa@...ron.com>
---
 drivers/block/mtip32xx/mtip32xx.c |    7 +++++--
 1 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/drivers/block/mtip32xx/mtip32xx.c b/drivers/block/mtip32xx/mtip32xx.c
index f8c12e1..09e6480 100644
--- a/drivers/block/mtip32xx/mtip32xx.c
+++ b/drivers/block/mtip32xx/mtip32xx.c
@@ -269,8 +269,11 @@ static int mtip_hba_reset(struct driver_data *dd)
 	/* Flush */
 	readl(dd->mmio + HOST_CTL);
 
-	/* Spin for up to 2 seconds, waiting for reset acknowledgement */
-	timeout = jiffies + msecs_to_jiffies(2000);
+	/*
+	 * Spin for up to 10 seconds waiting for reset acknowledgement. Spec
+	 * is 1 sec but in LUN failure conditions, up to 10 secs are required
+	 */
+	timeout = jiffies + msecs_to_jiffies(10000);
 	do {
 		mdelay(10);
 		if (test_bit(MTIP_DDF_REMOVE_PENDING_BIT, &dd->dd_flag))
-- 
1.7.1


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