Re: [PATCH 4.14 00/21] 4.14.335-rc1 review

[Greg Kroah-Hartman <gregkh@linuxfoundation.org>]

On Fri, Jan 05, 2024 at 09:39:58PM +0100, Alexis Lothoré wrote:
> Hello,
> 
> On 1/5/24 18:13, Daniel Díaz wrote:
> > Hello!
> > 
> > On 05/01/24 8:38 a. m., Greg Kroah-Hartman wrote:
> 
> [...]
> 
> > Failure looks like this:
> > 
> > -----8<-----
> >   /builds/linux/drivers/pinctrl/pinctrl-at91-pio4.c: In function
> > 'atmel_pinctrl_probe':
> >   /builds/linux/drivers/pinctrl/pinctrl-at91-pio4.c:1054:3: error: too many
> > arguments to function 'irq_set_lockdep_class'
> >      irq_set_lockdep_class(irq, &atmel_lock_key, &atmel_request_key);
> >      ^~~~~~~~~~~~~~~~~~~~~
> >   In file included from /builds/linux/include/linux/irq.h:517,
> >                    from /builds/linux/include/linux/gpio/driver.h:7,
> >                    from /builds/linux/drivers/pinctrl/pinctrl-at91-pio4.c:18:
> >   /builds/linux/include/linux/irqdesc.h:250:1: note: declared here
> >    irq_set_lockdep_class(unsigned int irq, struct lock_class_key *class)
> >    ^~~~~~~~~~~~~~~~~~~~~
> >   make[3]: *** [/builds/linux/scripts/Makefile.build:330:
> > drivers/pinctrl/pinctrl-at91-pio4.o] Error 1
> > ----->8-----
> > 
> > Bisection points to:
> > 
> >   commit 6c47537ba008b3affe99360f65592ff5b797818f
> >   Author: Alexis Lothoré <alexis.lothore@bootlin.com>
> >   Date:   Fri Dec 15 22:34:24 2023 +0100
> > 
> >       pinctrl: at91-pio4: use dedicated lock class for IRQ
> >             [ Upstream commit 14694179e561b5f2f7e56a0f590e2cb49a9cc7ab ]
> 
> This fails because linux-4.14.y is older than 39c3fd58952d: kernel/irq: Extend
> lockdep class for request mutex, which updates irq_set_lockdep_class API.
> 
> Looking at irq_set_lockdep_class update patch, what appears to be a simple fix is
> to simply remove the last parameter from irq_set_lockdep_class call in
> pinctrl-at91-pio4.c, but I am not even sure if the fix remains legitimate in this
> case (ie if the corresponding lockdep splat reappears), and I do not have access
> to corresponding hardware before the deadline, so if that's not already the plan,
> I suggest to drop this from 4.14 branch.

Now dropped, thanks.

greg k-h