From: "Pali Rohár" <pali.rohar@gmail.com>
To: Pavel Machek <pavel@ucw.cz>
Cc: sre@kernel.org, kernel list <linux-kernel@vger.kernel.org>,
linux-arm-kernel <linux-arm-kernel@lists.infradead.org>,
linux-omap@vger.kernel.org, tony@atomide.com, khilman@kernel.org,
aaro.koskinen@iki.fi, ivo.g.dimitrov.75@gmail.com,
patrikbachan@gmail.com, serge@hallyn.com, abcloriens@gmail.com,
clayton@craftyguy.net, martijn@brixit.nl,
sakari.ailus@linux.intel.com, wsa@the-dreams.de,
linux-i2c@vger.kernel.org, balbi@ti.com, jlu@pengutronix.de,
bigeasy@linutronix.de
Subject: Re: i2c-omap.c vs. qemu: too much work in one irq (and broken boot)
Date: Mon, 2 Oct 2017 09:23:31 +0200 [thread overview]
Message-ID: <20171002072331.GB25930@pali> (raw)
In-Reply-To: <20171001221935.GA29628@amd>
On Monday 02 October 2017 00:19:35 Pavel Machek wrote:
> Hi!
>
> > I'm trying to get qemu emulation of Nokia N900 to work, but
> > unfortunately i2c-omap.c breaks boot in the emulator (real hardware
> > works ok).
>
> I started bisection. v4.6 works, v4.7 is broken. (It still may be
> config difference or something).
>
> This looked suspect, so I tried reverting it, but it did not help. And
> it is only significant change in i2c-omap.c. So... this may be a lot
> of fun.
>
> commit 126a66caec4a00b8d66dbc3174b0efa905cf68c3
> Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
> Date: Mon Apr 4 16:55:23 2016 +0300
>
> Unfortunately, mmc is broken in v4.6, so its useless for
> emulation... [ 3.236724] mmc1: error -22 whilst initialising SDIO card
Hi! You can apply special patch to make mmc work in both qemu and real
N900 device for previous kernel versions...
https://github.com/pali/linux-n900/commit/eb080ecdcfc5868d8e36d0f5f42d9cb7f13b4db9
--
Pali Rohár
pali.rohar@gmail.com
WARNING: multiple messages have this Message-ID (diff)
From: pali.rohar@gmail.com (Pali Rohár)
To: linux-arm-kernel@lists.infradead.org
Subject: i2c-omap.c vs. qemu: too much work in one irq (and broken boot)
Date: Mon, 2 Oct 2017 09:23:31 +0200 [thread overview]
Message-ID: <20171002072331.GB25930@pali> (raw)
In-Reply-To: <20171001221935.GA29628@amd>
On Monday 02 October 2017 00:19:35 Pavel Machek wrote:
> Hi!
>
> > I'm trying to get qemu emulation of Nokia N900 to work, but
> > unfortunately i2c-omap.c breaks boot in the emulator (real hardware
> > works ok).
>
> I started bisection. v4.6 works, v4.7 is broken. (It still may be
> config difference or something).
>
> This looked suspect, so I tried reverting it, but it did not help. And
> it is only significant change in i2c-omap.c. So... this may be a lot
> of fun.
>
> commit 126a66caec4a00b8d66dbc3174b0efa905cf68c3
> Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
> Date: Mon Apr 4 16:55:23 2016 +0300
>
> Unfortunately, mmc is broken in v4.6, so its useless for
> emulation... [ 3.236724] mmc1: error -22 whilst initialising SDIO card
Hi! You can apply special patch to make mmc work in both qemu and real
N900 device for previous kernel versions...
https://github.com/pali/linux-n900/commit/eb080ecdcfc5868d8e36d0f5f42d9cb7f13b4db9
--
Pali Roh?r
pali.rohar at gmail.com
next prev parent reply other threads:[~2017-10-02 7:23 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-10-01 20:42 i2c-omap.c vs. qemu: too much work in one irq (and broken boot) Pavel Machek
2017-10-01 20:42 ` Pavel Machek
2017-10-01 22:19 ` Pavel Machek
2017-10-01 22:19 ` Pavel Machek
2017-10-02 7:23 ` Pali Rohár [this message]
2017-10-02 7:23 ` Pali Rohár
2017-10-03 9:38 ` Pavel Machek
2017-10-03 9:38 ` Pavel Machek
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