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authorMaciej W. Rozycki <macro@linux-mips.org>2006-10-03 12:42:02 +0100
committerRalf Baechle <ralf@linux-mips.org>2006-10-03 17:59:17 +0100
commitd599def5cd81439e7da04dc6754b257043f5e584 (patch)
tree6790e93dc16327c8acc4dfccdfd8c11124988482 /arch/mips
parentaf8b128719f5248e542036ea994610a29d0642a6 (diff)
downloadlinux-d599def5cd81439e7da04dc6754b257043f5e584.tar.bz2
[MIPS] SB1250: Interrupt handler fixes
Mask cp0.status against cp0.cause. Additionally, spurious interrupts are not recorded. Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips')
-rw-r--r--arch/mips/sibyte/sb1250/irq.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/arch/mips/sibyte/sb1250/irq.c b/arch/mips/sibyte/sb1250/irq.c
index a451b4c7732d..f9bd9f074517 100644
--- a/arch/mips/sibyte/sb1250/irq.c
+++ b/arch/mips/sibyte/sb1250/irq.c
@@ -442,7 +442,7 @@ asmlinkage void plat_irq_dispatch(struct pt_regs *regs)
* blasting the high 32 bits.
*/
- pending = read_c0_cause();
+ pending = read_c0_cause() & read_c0_status();
#ifdef CONFIG_SIBYTE_SB1250_PROF
if (pending & CAUSEF_IP7) /* Cpu performance counter interrupt */
@@ -476,5 +476,8 @@ asmlinkage void plat_irq_dispatch(struct pt_regs *regs)
R_IMR_INTERRUPT_STATUS_BASE)));
if (mask)
do_IRQ(fls64(mask) - 1, regs);
- }
+ else
+ spurious_interrupt(regs);
+ } else
+ spurious_interrupt(regs);
}