Re: [PATCH next v2 2/2] mmc: sunplus: Fix platform_get_irq() error checking

[Dan Carpenter]

On Wed, Aug 09, 2023 at 01:33:51PM +0200, Ulf Hansson wrote:
> On Wed, 9 Aug 2023 at 09:19, Harshit Mogalapalli
> <harshit.m.mogalapalli@xxxxxxxxxx> wrote:
> >
> > The platform_get_irq() function returns negative error codes on failure.
> >
> > Fixes: 4e268fed8b18 ("mmc: Add mmc driver for Sunplus SP7021")
> > Reported-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
> > Closes: https://lore.kernel.org/all/a3829ed3-d827-4b9d-827e-9cc24a3ec3bc@moroto.mountain/
> > Signed-off-by: Harshit Mogalapalli <harshit.m.mogalapalli@xxxxxxxxxx>
> 
> Applied for fixes and by adding a stable tag, thanks!

It's not really a fix.  The platform_get_irq() function can't actually
return zero.

I asked Arnd about this and he said that there were some arches where
zero was a valid IRQ but they're not in the upstream kernel any more and
we're hopefully not going to do that again.

regards,
dan carpenter