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authorRalf Baechle <ralf@linux-mips.org>2007-09-21 17:13:55 +0100
committerRalf Baechle <ralf@linux-mips.org>2007-09-24 18:13:02 +0100
commit1146fe30504a1edd8a434f500e1be139492570c9 (patch)
treeba6dec916c23506580be7a5756dd583105da41ba /arch/mips/kernel/smtc.c
parent7bae705ef2c2daac1993de03e5be93b5c300fc5e (diff)
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[MIPS] SMTC: Make ack_bad_irq() safe with no IM backstop.
Issue reported and original patch by Kevin Kissel, cleaner (imho) implementation by me. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/kernel/smtc.c')
-rw-r--r--arch/mips/kernel/smtc.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/arch/mips/kernel/smtc.c b/arch/mips/kernel/smtc.c
index 43826c16101d..f09404377ef1 100644
--- a/arch/mips/kernel/smtc.c
+++ b/arch/mips/kernel/smtc.c
@@ -25,8 +25,11 @@
#include <asm/smtc_proc.h>
/*
- * This file should be built into the kernel only if CONFIG_MIPS_MT_SMTC is set.
+ * SMTC Kernel needs to manipulate low-level CPU interrupt mask
+ * in do_IRQ. These are passed in setup_irq_smtc() and stored
+ * in this table.
*/
+unsigned long irq_hwmask[NR_IRQS];
#define LOCK_MT_PRA() \
local_irq_save(flags); \