From: Chris Dearman <chris@mips.com>
Date: Thu, 21 Jun 2007 11:59:57 +0000 (+0100)
Subject: [MIPS] Fix timer/performance interrupt detection
X-Git-Tag: v2.6.22~12^2~5
X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c3e838a2cbb0f14af4d718160933523ac4c37adf;p=linux-2.6

[MIPS] Fix timer/performance interrupt detection

Signed-off-by: Chris Dearman <chris@mips.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
---

diff --git a/arch/mips/kernel/traps.c b/arch/mips/kernel/traps.c
index b1233644fc..3ea7863c45 100644
--- a/arch/mips/kernel/traps.c
+++ b/arch/mips/kernel/traps.c
@@ -1372,12 +1372,12 @@ void __init per_cpu_trap_init(void)
 	 */
 	if (cpu_has_mips_r2) {
 		cp0_compare_irq = (read_c0_intctl () >> 29) & 7;
-		cp0_perfcount_irq = -1;
-	} else {
-		cp0_compare_irq = CP0_LEGACY_COMPARE_IRQ;
 		cp0_perfcount_irq = (read_c0_intctl () >> 26) & 7;
-		if (cp0_perfcount_irq != cp0_compare_irq)
+		if (cp0_perfcount_irq == cp0_compare_irq)
 			cp0_perfcount_irq = -1;
+	} else {
+		cp0_compare_irq = CP0_LEGACY_COMPARE_IRQ;
+		cp0_perfcount_irq = -1;
 	}
 
 #ifdef CONFIG_MIPS_MT_SMTC