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From: "Franky Lin" <frankyl-dY08KVG/lbpWk0Htik3J/w@public.gmane.org>
To: khilman-l0cyMroinI0@public.gmane.org,
	tarun.kanti-l0cyMroinI0@public.gmane.org
Cc: tony-4v6yS6AI5VpBDgjK7y7TUQ@public.gmane.org,
	santosh.shilimkar-l0cyMroinI0@public.gmane.org,
	b-cousson-l0cyMroinI0@public.gmane.org,
	grant.likely-s3s/WqlpOiPyB63q8FvJNQ@public.gmane.org,
	linux-omap-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	"linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org"
	<linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org>,
	"linux-wireless-u79uwXL29TY76Z2rM5mHXA@public.gmane.org"
	<linux-wireless-u79uwXL29TY76Z2rM5mHXA@public.gmane.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/

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             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
     [not found]   ` <CAC83ZvL2ozQD1DYmtKeFa1PB1pZ1JmBUKFWmDWnbJOCDL3sKNg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2012-06-26 18:20     ` Franky Lin
2012-06-27 13:29       ` DebBarma, Tarun Kanti
     [not found] ` <4FE8CF77.5080400-dY08KVG/lbpWk0Htik3J/w@public.gmane.org>
2012-06-27  3:37   ` Kevin Hilman
     [not found]     ` <87txxxs9we.fsf-l0cyMroinI0@public.gmane.org>
2012-06-28  0:41       ` Franky Lin
2012-06-28 15:42         ` Jon Hunter
2012-06-28 21:24           ` Franky Lin
     [not found]             ` <4FECCB91.7090609-dY08KVG/lbpWk0Htik3J/w@public.gmane.org>
2012-06-28 21:55               ` Jon Hunter
     [not found]                 ` <4FECD2E5.1060603-l0cyMroinI0@public.gmane.org>
2012-06-28 22:53                   ` Franky Lin
2012-06-28 22:59                     ` Jon Hunter
2012-06-28 23:10                       ` Franky Lin
     [not found]                         ` <4FECE45E.6040506-dY08KVG/lbpWk0Htik3J/w@public.gmane.org>
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
     [not found]                               ` <CAC83ZvJJw-7Xt4Ey4_OT70D6MGHEfwURYVuj5wYTLe5oYiMuRw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2012-06-29 15:53                                 ` Jon Hunter
2012-06-27 23:43 ` Jon Hunter
2012-06-28  1:03   ` Franky Lin
     [not found]     ` <4FEBAD7A.5050505-dY08KVG/lbpWk0Htik3J/w@public.gmane.org>
2012-06-28 15:37       ` Jon Hunter

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