Re: Patch "clk: at91: peripheral: fix return value" has been added to the 6.17-stable tree

Re: Patch "clk: at91: peripheral: fix return value" has been added to the 6.17-stable tree

[Brian Masney]

Hi Sasha,

On Wed, Oct 15, 2025 at 07:36:02AM -0400, Sasha Levin wrote:
> This is a note to let you know that I've just added the patch titled
> 
>     clk: at91: peripheral: fix return value
> 
> to the 6.17-stable tree which can be found at:
>     http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
> 
> The filename of the patch is:
>      clk-at91-peripheral-fix-return-value.patch
> and it can be found in the queue-6.17 subdirectory.
> 
> If you, or anyone else, feels it should not be added to the stable tree,
> please let <stable@vger.kernel.org> know about it.
> 
> 
> 
> commit cbddc84a11e6112835fced8f7266d9810efc52f3
> Author: Brian Masney <bmasney@redhat.com>
> Date:   Mon Aug 11 11:17:53 2025 -0400
> 
>     clk: at91: peripheral: fix return value
>     
>     [ Upstream commit 47b13635dabc14f1c2fdcaa5468b47ddadbdd1b5 ]
>     
>     determine_rate() is expected to return an error code, or 0 on success.
>     clk_sam9x5_peripheral_determine_rate() has a branch that returns the
>     parent rate on a certain case. This is the behavior of round_rate(),
>     so let's go ahead and fix this by setting req->rate.
>     
>     Fixes: b4c115c76184f ("clk: at91: clk-peripheral: add support for changeable parent rate")
>     Reviewed-by: Alexander Sverdlin <alexander.sverdlin@gmail.com>
>     Acked-by: Nicolas Ferre <nicolas.ferre@microchip.com>
>     Signed-off-by: Brian Masney <bmasney@redhat.com>
>     Signed-off-by: Sasha Levin <sashal@kernel.org>

Please don't backport any of my round_rate() to determine_rate()
migrations to the stable kernels. I have maybe close to 200 of these
patches for various clk drivers, and stable can stay on round_rate().
There's no functional change.

Stephen mentioned this work on his pull to Linus about how this is all
prerequisite work to get to the real task of improving the clk rate
setting process.
https://lore.kernel.org/linux-clk/20251007051720.11386-1-sboyd@kernel.org/

Thanks,

Brian