From: Ralf Baechle <ralf@linux-mips.org>
Date: Tue, 9 Aug 2005 15:23:49 +0000 (+0000)
Subject: Inlining will result in back-to-back mtc0 mfc0 instructions.  Break the
X-Git-Tag: v2.6.15-rc1~731^2~1^2~115
X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d9912d87840b321678c85396c6adf15ced2c228d;p=linux-2.6

Inlining will result in back-to-back mtc0 mfc0 instructions.  Break the
hazard by using back_to_back_c0_hazard().

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

diff --git a/arch/mips/kernel/irq_cpu.c b/arch/mips/kernel/irq_cpu.c
index 060722e42c..31c38c4971 100644
--- a/arch/mips/kernel/irq_cpu.c
+++ b/arch/mips/kernel/irq_cpu.c
@@ -55,6 +55,7 @@ static inline void mips_cpu_irq_enable(unsigned int irq)
 
 	local_irq_save(flags);
 	unmask_mips_irq(irq);
+	back_to_back_c0_hazard();
 	local_irq_restore(flags);
 }
 
@@ -64,6 +65,7 @@ static void mips_cpu_irq_disable(unsigned int irq)
 
 	local_irq_save(flags);
 	mask_mips_irq(irq);
+	back_to_back_c0_hazard();
 	local_irq_restore(flags);
 }