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author | Ralf Baechle <ralf@linux-mips.org> | 2008-02-08 04:22:01 -0800 |
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committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2008-02-08 09:22:42 -0800 |
commit | 46f4f8f665080900e865392f4b3593be463bf0d8 (patch) | |
tree | d4d1cb04b461b4ddd841396647d911fdc08819ef /arch/mips | |
parent | 922f9cfa79b52c85b6002d96cb0eefd13437c58c (diff) | |
download | op-kernel-dev-46f4f8f665080900e865392f4b3593be463bf0d8.zip op-kernel-dev-46f4f8f665080900e865392f4b3593be463bf0d8.tar.gz |
IRQ_NOPROBE helper functions
Probing non-ISA interrupts using the handle_percpu_irq as their handle_irq
method may crash the system because handle_percpu_irq does not check
IRQ_WAITING. This for example hits the MIPS Qemu configuration.
This patch provides two helper functions set_irq_noprobe and set_irq_probe to
set rsp. clear the IRQ_NOPROBE flag. The only current caller is MIPS code
but this really belongs into generic code.
As an aside, interrupt probing these days has become a mostly obsolete if not
dangerous art. I think Linux interrupts should be changed to default to
non-probing but that's subject of this patch.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Acked-and-tested-by: Rob Landley <rob@landley.net>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/mips')
0 files changed, 0 insertions, 0 deletions