commit 7e9e05cad94217498e4d9bd6ef7137b4e9e7ed64
author Ralf Baechle <ralf@linux-mips.org> Sat May 16 12:23:45 2009 +0100
committer Ralf Baechle <ralf@linux-mips.org> Wed May 20 18:53:13 2009 +0100
tree 67a1b4283c4b9644e000eb0326b84e9d6409e54b
parent 950312ce22696ddfa42a957bdadaa9c24151e679

MIPS: IP22: Fix hang in power button interrupt handler

The hang was caused by the use of disable_irq() from the interrupt handler
itself.  Fixed by the use of disable_irq_nosync().  The issue was
triggered by:

    commit 3aa551c9b4c40018f0e261a178e3d25478dc04a9
    Author: Thomas Gleixner <tglx@linutronix.de>
    Date:   Mon Mar 23 18:28:15 2009 +0100

        genirq: add threaded interrupt handler support

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

arch/mips/sgi-ip22/ip22-reset.c

diff --git a/arch/mips/sgi-ip22/ip22-reset.c b/arch/mips/sgi-ip22/ip22-reset.c
index 4ad5c33..45b6694 100644
--- a/arch/mips/sgi-ip22/ip22-reset.c
+++ b/arch/mips/sgi-ip22/ip22-reset.c
@@ -148,7 +148,7 @@
 
 	if (sgint->istat1 & SGINT_ISTAT1_PWR) {
 		/* Wait until interrupt goes away */
-		disable_irq(SGI_PANEL_IRQ);
+		disable_irq_nosync(SGI_PANEL_IRQ);
 		init_timer(&debounce_timer);
 		debounce_timer.function = debounce;
 		debounce_timer.expires = jiffies + 5;