linux-kernel - [ 41/47] i2c-eg20t: change timeout value 50msec to 1000msec

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Message-Id: <20120518212652.917821752@linuxfoundation.org>
Date:	Fri, 18 May 2012 14:27:30 -0700
From:	Greg KH <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:	torvalds@...ux-foundation.org, akpm@...ux-foundation.org,
	alan@...rguk.ukuu.org.uk, Tomoya MORINAGA <tomoya.rohm@...il.com>,
	Wolfram Sang <w.sang@...gutronix.de>
Subject: [ 41/47] i2c-eg20t: change timeout value 50msec to 1000msec

3.3-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Tomoya MORINAGA <tomoya.rohm@...il.com>

commit 8a52f9f347da721b199b7f9dcc0168bbe7d0baae upstream.

Currently, during i2c works alone, wait-event timeout is not occurred.
However, as CPU load increases, timeout occurs frequently.
So, I modified like this patch.
Modifying like this patch, I've never seen the timeout event with high
load test.

Signed-off-by: Tomoya MORINAGA <tomoya.rohm@...il.com>
Signed-off-by: Wolfram Sang <w.sang@...gutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/i2c/busses/i2c-eg20t.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/i2c/busses/i2c-eg20t.c
+++ b/drivers/i2c/busses/i2c-eg20t.c
@@ -318,7 +318,7 @@ static s32 pch_i2c_wait_for_xfer_complet
 {
 	long ret;
 	ret = wait_event_timeout(pch_event,
-			(adap->pch_event_flag != 0), msecs_to_jiffies(50));
+			(adap->pch_event_flag != 0), msecs_to_jiffies(1000));
 
 	if (ret == 0) {
 		pch_err(adap, "timeout: %x\n", adap->pch_event_flag);


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