linux-kernel - Re: [PATCH v2 1/1] serial: core: Fix serial_base_match() after fixing controller port name

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Message-ID: <20230803-molecule-shelter-aa71b219af26@wendy>
Date:   Thu, 3 Aug 2023 09:52:56 +0100
From:   Conor Dooley <conor.dooley@...rochip.com>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>
CC:     Tony Lindgren <tony@...mide.com>,
        Jiri Slaby <jirislaby@...nel.org>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Andy Shevchenko <andriy.shevchenko@...el.com>,
        Dhruva Gole <d-gole@...com>,
        Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>,
        John Ogness <john.ogness@...utronix.de>,
        Johan Hovold <johan@...nel.org>,
        Sebastian Andrzej Siewior <bigeasy@...utronix.de>,
        Vignesh Raghavendra <vigneshr@...com>,
        <linux-kernel@...r.kernel.org>, <linux-serial@...r.kernel.org>,
        kernel test robot <oliver.sang@...el.com>
Subject: Re: [PATCH v2 1/1] serial: core: Fix serial_base_match() after
 fixing controller port name

On Thu, Aug 03, 2023 at 09:50:03AM +0200, Greg Kroah-Hartman wrote:
> On Thu, Aug 03, 2023 at 10:10:32AM +0300, Tony Lindgren wrote:
> > While fixing DEVNAME to be more usable, I broke serial_base_match() as the
> > ctrl and port prefix for device names seemed unnecessary.
> > 
> > The prefixes are still needed by serial_base_match() to probe the serial
> > base controller port, and serial tx is now broken.
> > 
> > Let's fix the issue by checking against dev->type and drv->name instead
> > of the prefixes that are no longer in the DEVNAME.
> > 
> > Fixes: 1ef2c2df1199 ("serial: core: Fix serial core controller port name to show controller id")
> > Reported-by: kernel test robot <oliver.sang@...el.com>
> > Closes: https://lore.kernel.org/oe-lkp/202308021529.35b3ad6c-oliver.sang@intel.com
> > Signed-off-by: Tony Lindgren <tony@...mide.com>
> > ---
> > 
> > Changes since v1:
> > - Leave out magic numbers and use str_has_prefix() as suggested by Andy
> >   and Greg
> > 
> > - Improve patch description and add a link for Closes tag as suggested
> >   by Jiri
> > 
> > - Check the name against device_type name since we have it and leave
> >   out the changes to try to define names in the header because of the
> >   issues noted by Jiri
> > 
> > - Leave out Tested-by from Mark and Anders as the patch changed
> 
> Thanks for this, now queued up.

Seems like I am a bit late, but FWIW this does fix my boot failures in
-next:
Tested-by: Conor Dooley <conor.dooley@...rochip.com>

Thanks,
Conor.

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