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From: Thorsten Blum <thorsten.blum@linux.dev>
To: Helge Deller <deller@gmx.de>
Cc: Chelsy Ratnawat <chelsyratnawat2001@gmail.com>,
	Thomas Zimmermann <tzimmermann@suse.de>,
	Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
	Raag Jadav <raag.jadav@intel.com>,
	linux-fbdev@vger.kernel.org, dri-devel@lists.freedesktop.org,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH] fbdev/pxafb: Fix multiple clamped values in pxafb_adjust_timing
Date: Tue, 2 Dec 2025 19:36:17 +0100	[thread overview]
Message-ID: <C3FDBCE7-14D9-4999-B463-C2E3E384E7DB@linux.dev> (raw)
In-Reply-To: <a7213b69-f6ae-4975-8c8b-2783dbe9f9b3@gmx.de>

On 2. Dec 2025, at 19:28, Helge Deller wrote:
> On 12/2/25 19:15, Thorsten Blum wrote:
>> The variables were never clamped because the return value of clamp_val()
>> was not used. Fix this by assigning the clamped values, and use clamp()
>> instead of clamp_val().
>> Cc: stable@vger.kernel.org
>> Fixes: 3f16ff608a75 ("[ARM] pxafb: cleanup of the timing checking code")
>> Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev>
>> ---
>>  drivers/video/fbdev/pxafb.c | 12 ++++++------
>>  1 file changed, 6 insertions(+), 6 deletions(-)
> 
> Thanks for the patch!
> It looks good, so I'll include it in the fbdev tree.
> Out of curiosity:
> How did you notice? Do you actually have the hardware and tested it?

I only compile-tested it.

I stumbled upon another driver with the same bug and then used grep to
search for other instances and found about 6 or 7, including this one.

Thanks,
Thorsten


  reply	other threads:[~2025-12-02 18:36 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-12-02 18:15 Thorsten Blum
2025-12-02 18:28 ` Helge Deller
2025-12-02 18:36   ` Thorsten Blum [this message]
2025-12-02 19:36     ` Helge Deller
2025-12-03  9:49       ` Andy Shevchenko
2025-12-03 10:30         ` Raag Jadav
2025-12-02 20:32     ` David Laight

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