From: Alexander Stein <alexander.stein-93q1YBGzJSMe9JSWTWOYM3xStJ4P+DSV@public.gmane.org>
To: linux-i2c-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Cc: linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
"Jean Delvare (PC drivers,
core)" <khali-PUYAD+kWke1g9hUCZPvPmw@public.gmane.org>,
"Ben Dooks (embedded platforms)"
<ben-linux-elnMNo+KYs3YtjvyW6yDsg@public.gmane.org>,
Feng Tang <feng.tang-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>,
Tomoya MORINAGA
<tomoya.rohm-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Subject: i2c-eg20t: regression since i2c_add_numbered_adapter change
Date: Wed, 22 Aug 2012 08:30:35 +0200 [thread overview]
Message-ID: <4401854.hVfHzgeqjT@ws-stein> (raw)
Hello,
I just noticed the 3.4 linux kernel fails to sucessfully probe the i2c-eg20t
driver. I returns with EBUSY error. It worked on the 3.0 kernel. To my view it
is caused the commit 07e8a51ff68353e01d795cceafbac9f54c49132b ( i2c-eg20t: use
i2c_add_numbered_adapter to get a fixed bus number).
The reason it actually fails is that the i2c-isch driver is registered
beforehand which gets bus number 0. But this one is the bus number the eg20t
driver wants to register.
A possibility is that if i2c_add_numbered_adapter failed with EBUSY just use
i2c_add_adapter to get at least the driver working, but with a non-fixed bus
number. Opinions?
Best regards,
Alexander
WARNING: multiple messages have this Message-ID (diff)
From: Alexander Stein <alexander.stein@systec-electronic.com>
To: linux-i2c@vger.kernel.org
Cc: linux-kernel@vger.kernel.org, "Jean Delvare (PC drivers,
core)" <khali@linux-fr.org>,
"Ben Dooks (embedded platforms)" <ben-linux@fluff.org>,
Feng Tang <feng.tang@intel.com>,
Tomoya MORINAGA <tomoya.rohm@gmail.com>
Subject: i2c-eg20t: regression since i2c_add_numbered_adapter change
Date: Wed, 22 Aug 2012 08:30:35 +0200 [thread overview]
Message-ID: <4401854.hVfHzgeqjT@ws-stein> (raw)
Hello,
I just noticed the 3.4 linux kernel fails to sucessfully probe the i2c-eg20t
driver. I returns with EBUSY error. It worked on the 3.0 kernel. To my view it
is caused the commit 07e8a51ff68353e01d795cceafbac9f54c49132b ( i2c-eg20t: use
i2c_add_numbered_adapter to get a fixed bus number).
The reason it actually fails is that the i2c-isch driver is registered
beforehand which gets bus number 0. But this one is the bus number the eg20t
driver wants to register.
A possibility is that if i2c_add_numbered_adapter failed with EBUSY just use
i2c_add_adapter to get at least the driver working, but with a non-fixed bus
number. Opinions?
Best regards,
Alexander
next reply other threads:[~2012-08-22 6:30 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-08-22 6:30 Alexander Stein [this message]
2012-08-22 6:30 ` i2c-eg20t: regression since i2c_add_numbered_adapter change Alexander Stein
2012-08-22 7:29 ` Feng Tang
2012-08-22 7:29 ` Feng Tang
2012-08-22 7:57 ` Alexander Stein
2012-08-22 8:04 ` Feng Tang
2012-08-22 8:04 ` Feng Tang
2012-08-22 9:17 ` Alexander Stein
2012-08-22 9:17 ` Alexander Stein
2012-08-23 8:28 ` Feng Tang
2012-08-23 8:28 ` Feng Tang
2012-08-29 18:40 ` Jean Delvare
2012-08-29 18:40 ` Jean Delvare
[not found] ` <20120829204031.648a73e1-R0o5gVi9kd7kN2dkZ6Wm7A@public.gmane.org>
2012-08-30 7:49 ` Alexander Stein
2012-08-30 7:49 ` Alexander Stein
2012-08-30 9:19 ` Feng Tang
2012-08-30 9:19 ` Feng Tang
2012-08-30 11:08 ` Alexander Stein
2012-08-30 11:08 ` Alexander Stein
2012-08-31 2:16 ` Feng Tang
2012-08-31 2:16 ` Feng Tang
2012-09-08 13:18 ` Jean Delvare
2012-08-30 9:10 ` Feng Tang
2012-08-30 9:10 ` Feng Tang
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