Re: [PATCH 6.9.y and older] pwm: stm32: Refuse too small period requests

[Greg KH <gregkh@linuxfoundation.org>]

On Tue, Jun 25, 2024 at 09:54:05AM +0200, Uwe Kleine-König wrote:
> If period_ns is small, prd might well become 0. Catch that case because
> otherwise with
> 
> 	regmap_write(priv->regmap, TIM_ARR, prd - 1);
> 
> a few lines down quite a big period is configured.
> 
> Fixes: 7edf7369205b ("pwm: Add driver for STM32 plaftorm")
> Cc: stable@vger.kernel.org
> Reviewed-by: Trevor Gamblin <tgamblin@baylibre.com>
> Signed-off-by: Uwe Kleine-König <u.kleine-koenig@baylibre.com>
> Link: https://lore.kernel.org/r/b86f62f099983646f97eeb6bfc0117bb2d0c340d.1718979150.git.u.kleine-koenig@baylibre.com
> Signed-off-by: Uwe Kleine-König <ukleinek@kernel.org>
> (cherry picked from commit c45fcf46ca2368dafe7e5c513a711a6f0f974308)
> Signed-off-by: Uwe Kleine-König <u.kleine-koenig@baylibre.com>
> ---
> Hello,
> 
> this is a backport of c45fcf46ca2368dafe7e5c513a711a6f0f974308 to 6.9.y.
> It applies fine to 4.19.y, 5.4.y, 5.10.y, 5.15.y, 6.1.y and 6.6.y, too.
> Please apply accordingly.
> 

Now queued up, thanks

greg k-h