linux-kernel - Re: [PATCH 2/5] video: ARM CLCD: fix endpoint lookup logic

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Date:   Tue, 30 Aug 2016 11:35:37 +0300
From:   Tomi Valkeinen <tomi.valkeinen@...com>
To:     Linus Walleij <linus.walleij@...aro.org>,
        Arnd Bergmann <arnd@...db.de>,
        Colin Ian King <colin.king@...onical.com>
CC:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-fbdev@...r.kernel.org" <linux-fbdev@...r.kernel.org>,
        Russell King <linux@...linux.org.uk>
Subject: Re: [PATCH 2/5] video: ARM CLCD: fix endpoint lookup logic


On 29/08/16 16:18, Linus Walleij wrote:
> On Fri, Aug 26, 2016 at 5:25 PM, Arnd Bergmann <arnd@...db.de> wrote:
> 
> [I don't see why Torvalds was CC'ed on this patch? Was there
> some specific complaint from his side that I screw things up
> or just the wrong Linus?]
> 
>> The addition of the Nomadik support in this driver introduced
>> a bug in clcdfb_of_init_display(), which now calls init_panel
>> with an uninitialized 'endpoint' pointer, as "gcc -Wmaybe-uninitialized"
>> warns:
>>
>> drivers/video/fbdev/amba-clcd.c: In function 'clcdfb_of_init_display':
>> drivers/video/fbdev/amba-clcd.c:785:5: error: 'endpoint' may be used uninitialized in this function [-Werror=maybe-uninitialized]
>>
>> This reverts the broken part of the function to what it was before
>> the patch, which is the best guess I have to what it should be.
>> I assume this was left over from an attempted rework of the
>> code that was partially backed out.
>>
>> Signed-off-by: Arnd Bergmann <arnd@...db.de>
>> Fixes: 046ad6cdeb3f ("video: ARM CLCD: support Nomadik variant")
>> Cc: Linus Walleij <linus.walleij@...aro.org>
> 
> Reviewed-by: Linus Walleij <linus.walleij@...aro.org>
> 
> Tomi: I think this bug was also reported by Ian King, so suggest
> adding his
> Reported-by: Colin Ian King <colin.king@...onical.com>
> 

Thanks, queued for v4.9.

 Tomi



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