Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752765AbdDOGmf (ORCPT ); Sat, 15 Apr 2017 02:42:35 -0400 Received: from mx2.suse.de ([195.135.220.15]:33662 "EHLO mx1.suse.de" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1752028AbdDOGmd (ORCPT ); Sat, 15 Apr 2017 02:42:33 -0400 Date: Sat, 15 Apr 2017 08:42:29 +0200 From: Jean Delvare To: Dmitry Torokhov Cc: linux-input@vger.kernel.org, Wolfram Sang , m.frohiky@gmail.com, Christian Gmeiner , linux-kernel@vger.kernel.org Subject: Re: [PATCH v2] Input: ar1021-i2c - fix too long name in driver's device table Message-ID: <20170415084229.397168d4@endymion> In-Reply-To: <20170413233225.GA30465@dtor-ws> References: <20170413233225.GA30465@dtor-ws> Organization: SUSE Linux X-Mailer: Claws Mail 3.12.0 (GTK+ 2.24.31; x86_64-suse-linux-gnu) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1724 Lines: 43 On Thu, 13 Apr 2017 16:32:25 -0700, Dmitry Torokhov wrote: > The name field in structure i2c_device_id is 20 characters, and we expect > it to be NULL-terminated, however we are trying to stuff it with 21 bytes > and thus NULL-terminator is lost. This causes issues when one creates > device with name "MICROCHIP_AR1021_I2C" as i2c core cuts off the last "C", > and automatic module loading by alias does not work as result. > > The -I2C suffix in the device name is superfluous, we know what bus we are > dealing with, so let's drop it. Also, no other driver uses capitals, and > the manufacturer name is normally not included, except in very rare cases > of incompatible name collisions. > > Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=116211 > Fixes: dd4cae8bf166 ("Input: Add Microchip AR1021 i2c touchscreen") > Signed-off-by: Dmitry Torokhov > --- > > V2: Changed MICROCHIP_AR1021 -> ar1021 as Jean suggested. > > drivers/input/touchscreen/ar1021_i2c.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > (...) Reviewed-by: Jean Delvare > diff --git a/drivers/input/touchscreen/ar1021_i2c.c b/drivers/input/touchscreen/ar1021_i2c.c > index 2e7500edd477..6797e123925a 100644 > --- a/drivers/input/touchscreen/ar1021_i2c.c > +++ b/drivers/input/touchscreen/ar1021_i2c.c > @@ -151,7 +151,7 @@ static int __maybe_unused ar1021_i2c_resume(struct device *dev) > static SIMPLE_DEV_PM_OPS(ar1021_i2c_pm, ar1021_i2c_suspend, ar1021_i2c_resume); > > static const struct i2c_device_id ar1021_i2c_id[] = { > - { "MICROCHIP_AR1021_I2C", 0 }, > + { "ar1021", 0 }, > { }, > }; > MODULE_DEVICE_TABLE(i2c, ar1021_i2c_id); -- Jean Delvare SUSE L3 Support