[AVR32] ext int fixes

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Bugfixes for external irq handler set_irq_type():

 - If set_irq_type() can't set the type, don't change anything!

 - It's not OK to change the flow handler as part of set_irq_type(),
   among other issues that violates spinlock rules.  Instead, we can
   call the relevant handler when we demux the external interrupts.

 - The external irq demux has no need to grab the spinlock.  And in
   fact grabbing it that way was wrong, since that code might be
   pre-empted by an irq at a different priority level, and that code
   might then have tried to grab that spinlock...

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>

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David Brownell 2007-01-23 20:21:36 -08:00 • committed by Haavard Skinnemoen

parent a3d912c8fa

commit 58febc0b13

1 changed files with 17 additions and 19 deletions

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arch/avr32/mach-at32ap/extint.c

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