linux-kernel - Re: EeePC 900 trackpad often not detected at boot in 2.6.30-rc4

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Message-ID: <20090516032924.GD12099@dtor-d630.eng.vmware.com>
Date:	Fri, 15 May 2009 20:29:24 -0700
From:	Dmitry Torokhov <dmitry.torokhov@...il.com>
To:	Sitsofe Wheeler <sitsofe@...oo.com>
Cc:	linux-kernel@...r.kernel.org,
	Alan Jenkins <sourcejedi.lkml@...glemail.com>,
	Matthew Garrett <mjg59@...f.ucam.org>
Subject: Re: EeePC 900 trackpad often not detected at boot in 2.6.30-rc4

On Fri, May 15, 2009 at 08:27:55PM -0700, Dmitry Torokhov wrote:
> On Wed, May 13, 2009 at 08:19:53PM +0100, Sitsofe Wheeler wrote:
> > Hi,
> > 
> > > On Tue, May 12, 2009 at 08:20:54PM -0700, Dmitry Torokhov wrote:
> > > > 
> > > > Could you try booting with i8042.debug and send me dmesg of the case
> > 
> > See below:
> > 
> 
> Thanks. I have an idea what is happening... Could you please attach the
> debug patch below and give me debug dmesg of the failure again? Thanks!
> 
> -- 
> Dmitry

And now... *drumroll* ...the patch!

-- 
Dmitry


Input: libps2 - debug patch

From: Dmitry Torokhov <dmitry.torokhov@...il.com>

Signed-off-by: Dmitry Torokhov <dtor@...l.ru>
---

 drivers/input/serio/libps2.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)


diff --git a/drivers/input/serio/libps2.c b/drivers/input/serio/libps2.c
index a0d8968..4938adc 100644
--- a/drivers/input/serio/libps2.c
+++ b/drivers/input/serio/libps2.c
@@ -208,6 +208,9 @@ int __ps2_command(struct ps2dev *ps2dev, unsigned char *param, int command)
 	timeout = wait_event_timeout(ps2dev->wait,
 				     !(ps2dev->flags & PS2_FLAG_CMD1), timeout);
 
+	if (ps2dev->cmdcnt && timeout <= 0 && !(ps2dev->flags & PS2_FLAG_CMD1))
+		printk(KERN_ERR "libps2: errorneously fail %d command\n", command);
+
 	if (ps2dev->cmdcnt && timeout > 0) {
 
 		timeout = ps2_adjust_timeout(ps2dev, command, timeout);
--
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