From: Felipe Balbi <balbi@ti.com>
To: Aaro Koskinen <aaro.koskinen@iki.fi>
Cc: Felipe Balbi <balbi@ti.com>, <sameo@linux.intel.com>,
<lee.jones@linaro.org>, Tony Lindgren <tony@atomide.com>,
Linux OMAP Mailing List <linux-omap@vger.kernel.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Linux ARM Kernel Mailing List
<linux-arm-kernel@lists.infradead.org>
Subject: Re: [PATCH 00/13] mfd: menelaus: a few cleanups
Date: Wed, 27 Nov 2013 21:00:34 -0600 [thread overview]
Message-ID: <20131128030033.GA15444@saruman.home> (raw)
In-Reply-To: <20131127204621.GI24645@blackmetal.musicnaut.iki.fi>
[-- Attachment #1: Type: text/plain, Size: 1817 bytes --]
Hi,
On Wed, Nov 27, 2013 at 10:46:21PM +0200, Aaro Koskinen wrote:
> Hi,
>
> On Wed, Nov 27, 2013 at 02:11:49PM -0600, Felipe Balbi wrote:
> > On Wed, Nov 27, 2013 at 10:02:47PM +0200, Aaro Koskinen wrote:
> > > On Wed, Nov 27, 2013 at 01:06:44PM -0600, Felipe Balbi wrote:
> > > > few cleanups on the old menelaus driver. I don't have
> > > > HW to test these patches, maybe Aaro can help here ?
> > >
> > > Hmm, I got:
> > >
> > > [ 1.330000] Unable to handle kernel NULL pointer dereference at virtual address 00000000
> > > [ 1.340000] pgd = c0004000
> > > [ 1.340000] [00000000] *pgd=00000000
> > > [ 1.350000] Internal error: Oops: 17 [#1] ARM
> > > [ 1.350000] CPU: 0 PID: 1 Comm: swapper Not tainted 3.13.0-rc1-n8x0_tiny-los.git-729021f-00018-g74a0f39 #2
> > > [ 1.350000] task: c782c000 ti: c782e000 task.ti: c782e000
> > > [ 1.350000] PC is at mutex_lock+0x0/0x20
> > > [ 1.350000] LR is at __irq_get_desc_lock+0x6c/0x88
> [...]
> > > [ 1.350000] [<c016745c>] (mutex_lock+0x0/0x20) from [<c00509ac>] (__irq_get_desc_lock+0x6c/0x88)
> > > [ 1.350000] [<c00509ac>] (__irq_get_desc_lock+0x6c/0x88) from [<c0053518>] (__irq_set_handler+0x24/0x128)
> > > [ 1.350000] [<c0053518>] (__irq_set_handler+0x24/0x128) from [<c013ec80>] (menelaus_probe+0xbc/0x280)
> > > [ 1.350000] [<c013ec80>] (menelaus_probe+0xbc/0x280) from [<c0140ab8>] (i2c_device_probe+0x98/0xc0)
>
> [...]
>
> > hmm, irq_set_chip_and_handler() will call back into the irq_chip we just
> > registered, so my ->irq_bus_lock needs to have everything setup
> > (chip_data my mutex), this should solve it:
>
> Yes, that fixes it. Seems to work fine now.
Awesome, should I add your tested-by ? I also added a few extra patches
on top which I'll send soon.
--
balbi
[-- Attachment #2: Digital signature --]
[-- Type: application/pgp-signature, Size: 836 bytes --]
next prev parent reply other threads:[~2013-11-28 3:01 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-11-27 19:06 [PATCH 00/13] mfd: menelaus: a few cleanups Felipe Balbi
2013-11-27 19:06 ` [PATCH 01/13] mfd: menelaus: drop __exit section annotation Felipe Balbi
2013-11-27 19:06 ` [PATCH 02/13] mfd: menelaus: switch over to module_i2c_driver Felipe Balbi
2013-11-27 19:06 ` [PATCH 03/13] mfd: menelaus: convert to threaded irq Felipe Balbi
2013-11-27 19:06 ` [PATCH 04/13] mfd: menelaus: remove unnecessary loop Felipe Balbi
2013-11-27 19:06 ` [PATCH 05/13] mfd: menelaus: use for_each_set_bit() Felipe Balbi
2013-11-27 19:06 ` [PATCH 06/13] mfd: menelaus: pass menelaus pointer as argument to enable/disable irq Felipe Balbi
2013-11-27 19:06 ` [PATCH 07/13] mfd: menelaus: limit the usage of the_menelaus Felipe Balbi
2013-11-27 19:06 ` [PATCH 08/13] mfd: menelaus: pass menelaus_chip pointer to add/remove irq functions Felipe Balbi
2013-11-27 19:06 ` [PATCH 09/13] mfd: menelaus: pass menelaus_chip pointer to get/set voltage Felipe Balbi
2013-11-27 19:06 ` [PATCH 10/13] mfd: menelaus: pass menelaus_chip argument to menelaus <-> time helpers Felipe Balbi
2013-11-27 19:06 ` [PATCH 11/13] mfd: menelaus: start to use irqdomain Felipe Balbi
2013-11-27 19:06 ` [PATCH 12/13] mfd: menelaus: switch all children to threaded_irq Felipe Balbi
2013-11-27 19:06 ` [PATCH 13/13] mfd: menelaus: remove unnecessary definition Felipe Balbi
2013-11-27 20:02 ` [PATCH 00/13] mfd: menelaus: a few cleanups Aaro Koskinen
2013-11-27 20:11 ` Felipe Balbi
2013-11-27 20:46 ` Aaro Koskinen
2013-11-28 3:00 ` Felipe Balbi [this message]
2013-11-28 9:32 ` Lee Jones
2013-11-28 21:34 ` Aaro Koskinen
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20131128030033.GA15444@saruman.home \
--to=balbi@ti.com \
--cc=aaro.koskinen@iki.fi \
--cc=lee.jones@linaro.org \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-omap@vger.kernel.org \
--cc=sameo@linux.intel.com \
--cc=tony@atomide.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).