[MIPS] SMTC: Fix SMTC dyntick support.

[linux-2.6-omap-h63xx.git] / arch / mips / kernel / cpu-probe.c

diff --git a/arch/mips/kernel/cpu-probe.c b/arch/mips/kernel/cpu-probe.c
index 335a6ae3d594044fa0ca99e44ee189631238b609..e621fda8ab37fad4847cb3a19ee238f415f82a91 100644 (file)
--- a/arch/mips/kernel/cpu-probe.c
+++ b/arch/mips/kernel/cpu-probe.c
@@ -45,18 +45,7 @@ static void r39xx_wait(void)
        local_irq_enable();
 }
 
-/*
- * There is a race when WAIT instruction executed with interrupt
- * enabled.
- * But it is implementation-dependent wheter the pipelie restarts when
- * a non-enabled interrupt is requested.
- */
-static void r4k_wait(void)
-{
-       __asm__("       .set    mips3                   \n"
-               "       wait                            \n"
-               "       .set    mips0                   \n");
-}
+extern void r4k_wait(void);
 
 /*
  * This variant is preferable as it allows testing need_resched and going to
@@ -65,14 +54,18 @@ static void r4k_wait(void)
  * interrupt is requested" restriction in the MIPS32/MIPS64 architecture makes
  * using this version a gamble.
  */
-static void r4k_wait_irqoff(void)
+void r4k_wait_irqoff(void)
 {
        local_irq_disable();
        if (!need_resched())
-               __asm__("       .set    mips3           \n"
+               __asm__("       .set    push            \n"
+                       "       .set    mips3           \n"
                        "       wait                    \n"
-                       "       .set    mips0           \n");
+                       "       .set    pop             \n");
        local_irq_enable();
+       __asm__("       .globl __pastwait       \n"
+               "__pastwait:                    \n");
+       return;
 }
 
 /*
@@ -128,7 +121,7 @@ static int __init wait_disable(char *s)
 
 __setup("nowait", wait_disable);
 
-static inline void check_wait(void)
+void __init check_wait(void)
 {
        struct cpuinfo_mips *c = &current_cpu_data;
 
@@ -242,7 +235,6 @@ static inline void check_errata(void)
 
 void __init check_bugs32(void)
 {
-       check_wait();
        check_errata();
 }