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

[Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>]

On Fri, Oct 02, 2020 at 12:07:50AM +0300, Grygorii Strashko wrote:
> On 30/09/2020 16:51, Linus Walleij wrote:
> > On Wed, Sep 30, 2020 at 12:47 PM Nikhil Devshatwar <nikhil.nd@xxxxxx> wrote:
> > 
> > > 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"
> > 
> > This would typically happen if the driver using an IRQ
> > from the PCA953x does not properly request it.

...

> We've just got another similar report, don't know the root cause, but it's not HDMI

Does
 e43c26e12dd4 ("gpio: pca953x: Fix uninitialized pending variable")
help?

-- 
With Best Regards,
Andy Shevchenko