Re: [PATCH 1/7] serial: sc16is7xx: fix snprintf format specifier in sc16is7xx_regmap_name()

[Greg KH <gregkh@linuxfoundation.org>]

On Thu, Nov 30, 2023 at 02:10:43PM -0500, Hugo Villeneuve wrote:
> From: Hugo Villeneuve <hvilleneuve@dimonoff.com>
> 
> Change snprint format specifier from %d to %u since port_id is unsigned.
> 
> Fixes: 3837a0379533 ("serial: sc16is7xx: improve regmap debugfs by using one regmap per port")
> Cc: stable@vger.kernel.org # 6.1.x: 3837a03 serial: sc16is7xx: improve regmap debugfs by using one regmap per port
> Suggested-by: Andy Shevchenko <andy.shevchenko@gmail.com>
> Signed-off-by: Hugo Villeneuve <hvilleneuve@dimonoff.com>
> ---
> I did not originally add a "Cc: stable" tag for commit 3837a0379533 ("serial: sc16is7xx: improve regmap debugfs by using one regmap per port")
> as it was intended only to improve debugging using debugfs. But
> since then, I have been able to confirm that it also fixes a long standing
> bug in our system where the Tx interrupt are no longer enabled at some
> point when transmitting large RS-485 paquets (> 64 bytes, which is the size
> of the FIFO). I have been investigating why, but so far I haven't found the
> exact cause, altough I suspect it has something to do with regmap caching.
> Therefore, I have added it as a prerequisite for this patch so that it is
> automatically added to the stable kernels.

Looks like the 0-day test bot found problems with this, so I'll hold off
on taking this patch and the rest of the series until that's fixed up
with a new version of this series.

thanks,

greg k-h