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authorThiemo Seufer <ths@networkno.de>2004-12-04 16:35:05 -0500
committerRalf Baechle <ralf@linux-mips.org>2005-10-29 14:30:15 -0400
commitb59a9504cb93db7fae31e60760725d48652a1fc3 (patch)
tree261c9e21a61fc0abe0dd7f21734b3497ed71d377 /arch/mips/kernel/entry.S
parent942b6f62164cf8822dd03b1569777f4663d1abd7 (diff)
De-optimize and decomplicate the spurious interrupt handler.
Signed-off-by: Thiemo Seufer <ths@networkno.de> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/kernel/entry.S')
-rw-r--r--arch/mips/kernel/entry.S13
1 files changed, 5 insertions, 8 deletions
diff --git a/arch/mips/kernel/entry.S b/arch/mips/kernel/entry.S
index 5eb429137e06..5e9a44168681 100644
--- a/arch/mips/kernel/entry.S
+++ b/arch/mips/kernel/entry.S
@@ -128,28 +128,25 @@ FEXPORT(syscall_exit_work)
128/* 128/*
129 * Common spurious interrupt handler. 129 * Common spurious interrupt handler.
130 */ 130 */
131 .text
132 .align 5
133LEAF(spurious_interrupt) 131LEAF(spurious_interrupt)
134 /* 132 /*
135 * Someone tried to fool us by sending an interrupt but we 133 * Someone tried to fool us by sending an interrupt but we
136 * couldn't find a cause for it. 134 * couldn't find a cause for it.
137 */ 135 */
136 PTR_LA t1, irq_err_count
138#ifdef CONFIG_SMP 137#ifdef CONFIG_SMP
139 lui t1, %hi(irq_err_count) 1381: ll t0, (t1)
1401: ll t0, %lo(irq_err_count)(t1)
141 addiu t0, 1 139 addiu t0, 1
142 sc t0, %lo(irq_err_count)(t1) 140 sc t0, (t1)
143#if R10000_LLSC_WAR 141#if R10000_LLSC_WAR
144 beqzl t0, 1b 142 beqzl t0, 1b
145#else 143#else
146 beqz t0, 1b 144 beqz t0, 1b
147#endif 145#endif
148#else 146#else
149 lui t1, %hi(irq_err_count) 147 lw t0, (t1)
150 lw t0, %lo(irq_err_count)(t1)
151 addiu t0, 1 148 addiu t0, 1
152 sw t0, %lo(irq_err_count)(t1) 149 sw t0, (t1)
153#endif 150#endif
154 j ret_from_irq 151 j ret_from_irq
155 END(spurious_interrupt) 152 END(spurious_interrupt)