From eff2c2f6f569267aa52e2431844cec30637d7ade Mon Sep 17 00:00:00 2001 From: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Date: Thu, 9 Mar 2006 17:33:37 -0800 Subject: [PATCH] [PATCH] alpha: fix IRQ handling lockup Fix a lockup which was introduced during the conversion to the generic IRQ framework. Cc: Richard Henderson <rth@twiddle.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org> --- arch/alpha/kernel/irq.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/arch/alpha/kernel/irq.c b/arch/alpha/kernel/irq.c index 9006063e73691..da677f829f768 100644 --- a/arch/alpha/kernel/irq.c +++ b/arch/alpha/kernel/irq.c @@ -151,8 +151,13 @@ handle_irq(int irq, struct pt_regs * regs) } irq_enter(); + /* + * __do_IRQ() must be called with IPL_MAX. Note that we do not + * explicitly enable interrupts afterwards - some MILO PALcode + * (namely LX164 one) seems to have severe problems with RTI + * at IPL 0. + */ local_irq_disable(); __do_IRQ(irq, regs); - local_irq_enable(); irq_exit(); } -- GitLab