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From: "Franky Lin" <frankyl@broadcom.com>
To: khilman@ti.com, tarun.kanti@ti.com
Cc: tony@atomide.com, santosh.shilimkar@ti.com, b-cousson@ti.com,
	grant.likely@secretlab.ca, linux-omap@vger.kernel.org,
	"linux-arm-kernel@lists.infradead.org"
	<linux-arm-kernel@lists.infradead.org>,
	"linux-wireless@vger.kernel.org" <linux-wireless@vger.kernel.org>
Subject: Panda ES board hang when using GPIO as interrupt
Date: Mon, 25 Jun 2012 13:52:07 -0700	[thread overview]
Message-ID: <4FE8CF77.5080400@broadcom.com> (raw)

Hi Kevin, Tarun,

We are using the expansion connector A on Panda board to mount a SDIO 
WiFi dongle on MMC2 with a level triggered interrupt signal connected to 
GPIO 138. It's been working fine until 3.5 rc1. The board hang randomly 
within 5 mins during a network traffic test. After bisecting we found 
the culprit is "[PATCH 8/8] gpio/omap: fix missing check in 
*_runtime_suspend()" [1].

I noticed Kevin raised some similar cases on other platforms and also 
provided two patches in the patch mail thread. But unfortunately those 
two patches doesn't help in our case. I tested the driver with 3.5-rc3 
mainline kernel and the issue is still there. I can only "fix" the hang 
by either reverting the commit or disabling CONFIG_PM_RUNTIME. Also, the 
hang only happens on Panda ES board. Old Panda with 4430 works good.

Any thoughts and suggestions?

Thanks,
Franky

[1] http://article.gmane.org/gmane.linux.ports.arm.omap/75708/


             reply	other threads:[~2012-06-25 20:52 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-06-25 20:52 Franky Lin [this message]
2012-06-26  7:21 ` Panda ES board hang when using GPIO as interrupt DebBarma, Tarun Kanti
2012-06-26 18:20   ` Franky Lin
2012-06-27 13:29     ` DebBarma, Tarun Kanti
2012-06-27  3:37 ` Kevin Hilman
2012-06-28  0:41   ` Franky Lin
2012-06-28 15:42     ` Jon Hunter
2012-06-28 21:24       ` Franky Lin
2012-06-28 21:55         ` Jon Hunter
2012-06-28 22:53           ` Franky Lin
2012-06-28 22:59             ` Jon Hunter
2012-06-28 23:10               ` Franky Lin
2012-06-28 23:28                 ` Jon Hunter
2012-06-28 23:35                 ` Jon Hunter
2012-06-28 23:54                 ` Jon Hunter
2012-06-29  0:59                   ` Franky Lin
2012-06-29  4:07                     ` DebBarma, Tarun Kanti
2012-06-29 15:53                       ` Jon Hunter
2012-06-27 23:43 ` Jon Hunter
2012-06-28  1:03   ` Franky Lin
2012-06-28 15:37     ` Jon Hunter

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