Re: [PATCH] pinctrl: at91: choose appropriate handler for level interrupts

From: boris brezillon
Date: Mon Jul 29 2013 - 12:00:32 EST

On 29/07/2013 17:42, Linus Walleij wrote:
On Sat, Jul 20, 2013 at 4:51 PM, Boris BREZILLON
<b.brezillon@xxxxxxxxxxx> wrote:

The current implementation handle both edge and level interrupts with the
'handle_simple_irq' handler.

Level interrupts are active as long as the pin stays at the configured
level (low or high). In this case we have to use 'handle_level_irq' which
mask the interrupt until the handle has treated it.

Signed-off-by: Boris BREZILLON <b.brezillon@xxxxxxxxxxx>
Nicolas/Jean-Christophe: any opinion on this patch?

I am tempted to just apply it and see if you react to it :-)

Just for clarification, without this patch the kernel hangs if you request a
threaded irq on level state (low or high).

This was tested on sama5ek board.

Best Regards,


Linus Walleij

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