Re: [PATCH] gpio: pca953x: fix irq_domain_add_simple usage

[Maxime Ripard]

Hi Linus,

Le 10/04/2013 22:54, Linus Walleij a écrit :
> On Wed, Apr 3, 2013 at 7:40 PM, Alexandre Belloni
> <alexandre.belloni@xxxxxxxxxxxxxxxxxx> 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@xxxxxxxxxxxxxxxxxx>
>> ---
>>
>> 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).
> 
> OK patch applied let's see if I get it to Torvalds in time.
> 
> Can I have some ACK from Maxime?

Sure,
Acked-by: Maxime Ripard <maxime.ripard@xxxxxxxxxxxxxxxxxx>

Maxime

-- 
Maxime Ripard, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com
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