linux-kernel - Re: [regression] Re: [PATCH 3/7] mfd: twl4030-irq: drop the kthread

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Date:	Wed, 7 Dec 2011 22:30:03 +1100
From:	NeilBrown <neilb@...e.de>
To:	Felipe Contreras <felipe.contreras@...il.com>
Cc:	balbi@...com, Linux OMAP Mailing List <linux-omap@...r.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Samuel Ortiz <sameo@...ux.intel.com>,
	Tony Lindgren <tony@...mide.com>,
	Thomas Gleixner <tglx@...utronix.de>
Subject: Re: [regression] Re: [PATCH 3/7] mfd: twl4030-irq: drop the kthread

On Wed, 7 Dec 2011 13:04:03 +0200 Felipe Contreras
<felipe.contreras@...il.com> wrote:

> On Wed, Dec 7, 2011 at 8:51 AM, Felipe Balbi <balbi@...com> wrote:
> > On Tue, Dec 06, 2011 at 05:28:58PM +0200, Felipe Contreras wrote:
> >> On Thu, Jun 30, 2011 at 12:51 PM, Felipe Balbi <balbi@...com> wrote:
> >> > ... and use threaded IRQ infrastructure. Later
> >> > patches will come dropping both workqueues and
> >> > setting the nested thread flag.
> >>
> >> There's something wrong. When I boot my Nokia N900 with this, as soon
> >> as I press a key from the keyboard the whole device hangs. I don't see
> >> anything on the console framebuffer, and with a jig I can't boot from
> >> MMC, so there isn't much more I can provide at the moment.
> >
> > Funny, this booted fine on my beagle and MMC card uses a twl GPIO for
> > card detection. Maybe it's something fairly obvious that I missed :-(
> 
> Did you try typing anything? That's where the problem happened on my side.
> 
> I'll try to flash a system to NAND, since I can't seem to just get the
> MMC to work when the cover is open and the device is connected to the
> jig to see if I can see something from serial console.
> 
> You don't have any idea about what to try?
> 

 Try the patches I posted to linux-kernel on Nov 27:

   Subject: [PATCH 0/4] fixes for twl4030-irq in mainline

and following

   http://lkml.org/lkml/2011/11/26/92

I think I hit exactly the same bug and you and (eventually) fix it (that was
a fun learning experience).

NeilBrown


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