Re: [PATCH] gpio: pca953x: Use irqchip template

[Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>]

On Wed, Sep 30, 2020 at 04:17:29PM +0530, Nikhil Devshatwar wrote:
> On 16:40-20200717, Linus Walleij wrote:
> > This makes the driver use the irqchip template to assign
> > properties to the gpio_irq_chip instead of using the
> > explicit calls to gpiochip_irqchip_add_nested() and
> > gpiochip_set_nested_irqchip(). The irqchip is instead
> > added while adding the gpiochip.

> I am getting a kernel crash on K3 j721e common processor board
> when HDMI is plugged in. Following is the full log with crash
> for NULL pointer derefence
> 
> https://pastebin.ubuntu.com/p/wBPS2ymmqR/
> 
> Upon inspection, I found that the "irq_find_mapping" call
> in the "pca953x_irq_handler" returns 0 and the same is passed
> to "handle_nested_irq"

Thanks for the report!

I would like to clarify the following:
- with the above patch reverted everything is fine, correct?
- v5.9-rc7 doesn't make any differences, correct?
- patch [1] doesn't help, correct?

[1]: https://lore.kernel.org/linux-gpio/1600851824-4608-1-git-send-email-ye.li@xxxxxxx/T/#u

-- 
With Best Regards,
Andy Shevchenko