From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jean Delvare Subject: Re: [PATCH 4/4] drivers/staging/lirc: Remove obsolete cleanup for clientdata Date: Tue, 25 Jan 2011 08:49:30 +0100 Message-ID: <20110125084930.6d87161a@endymion.delvare> References: <1295865880-27672-1-git-send-email-w.sang@pengutronix.de> <1295865880-27672-4-git-send-email-w.sang@pengutronix.de> <1295914142.2420.29.camel@localhost> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1295914142.2420.29.camel@localhost> Sender: linux-i2c-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Andy Walls Cc: Wolfram Sang , linux-i2c-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Greg Kroah-Hartman , Mauro Carvalho Chehab , Jarod Wilson , Joe Perches , devel-gWbeCf7V1WCQmaza687I9mD2FQJk+8+b@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: linux-i2c@vger.kernel.org On Mon, 24 Jan 2011 19:09:02 -0500, Andy Walls wrote: > On Mon, 2011-01-24 at 11:44 +0100, Wolfram Sang wrote: > > A few new i2c-drivers came into the kernel which clear the clientdata-pointer > > on exit or error. This is obsolete meanwhile, the core will do it. Simplify the > > kfree() calls after that, the pointers don't need to be checked. > > > > Signed-off-by: Wolfram Sang > > Cc: Greg Kroah-Hartman > > Cc: Mauro Carvalho Chehab > > Cc: Andy Walls > > Nak. > > In a module where I plan to do more cleanup and add reference counting > to struct IR, IR_tx, and IR_rx objects, I'd like the explicit "NULL"s in > pointer checks to stay in for now. > > Removing the explicit constant "NULL" makes searching for checks against > NULL pointers more difficult when auditing the code (No red syntax > highlighting and a /NULL search misses). I agree that Wolfram was too generous with his clean-ups this time. Wolfram, you should only be removing the calls to i2c_set_clientdata(x, NULL), not changing the logic of the code. Furthermore, lirc_zilog is currently undergoing heavy changes, I'd rather let Andy and Jarod work on that staging driver, and clean up what needs to be later. -- Jean Delvare