Messages in this thread | | | Date | Tue, 09 Apr 2013 23:34:38 +0200 | From | Alexandre Belloni <> | Subject | Re: [PATCH] gpio: pca953x: fix irq_domain_add_simple usage |
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Linus, Grant,
I take the liberty to ping you on that one as it is a regression and it may be worth to include it in 3.9 if it is still time to do so.
Best regards,
On 03/04/2013 19:40, Alexandre Belloni wrote: > We actually have to pass chip as the host_data parameter of > irq_domain_add_simple() as later on, it is used to initialize chip_data > in pca953x_gpio_irq_map(). Failing to do so is leading to a NULL pointer > dereference after calling irq_data_get_irq_chip_data() in > pca953x_irq_mask(), pca953x_irq_unmask(), pca953x_irq_bus_lock(), > pca953x_irq_bus_sync_unlock() and pca953x_irq_set_type(). > > Fixes regression introduced by commit > 0e8f2fdacf1d44651aa7e57063c76142d1f4988b (gpio: pca953x: use simple > irqdomain) > > Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com> > --- > > This would probably be good to introduce that patch in the next 3.9 rc as the > regression leads to a lot of breakage (and cursing). > > drivers/gpio/gpio-pca953x.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/drivers/gpio/gpio-pca953x.c b/drivers/gpio/gpio-pca953x.c > index e2dcac5..ea26e59 100644 > --- a/drivers/gpio/gpio-pca953x.c > +++ b/drivers/gpio/gpio-pca953x.c > @@ -575,7 +575,7 @@ static int pca953x_irq_setup(struct pca953x_chip *chip, > chip->gpio_chip.ngpio, > irq_base, > &pca953x_irq_simple_ops, > - NULL); > + chip); > if (!chip->domain) > return -ENODEV; >
-- Alexandre Belloni, Free Electrons Embedded Linux, Kernel and Android engineering http://free-electrons.com
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