Blackfin: SMP: delay enabling caches until CPU is initialized

Defer bfin_setup_caches(cpu) to avoid unexpected faults due to the cpu
state not yet being fully initialized.

Signed-off-by: steven miao <realmz6@gmail.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>

diff --git a/arch/blackfin/mach-common/smp.c b/arch/blackfin/mach-common/smp.c
index d3f597a..40e6cbc 100644 (file)
--- a/arch/blackfin/mach-common/smp.c
+++ b/arch/blackfin/mach-common/smp.c
@@ -361,8 +361,6 @@ void __cpuinit secondary_start_kernel(void)
         */
        init_exception_vectors();
 
-       bfin_setup_caches(cpu);
-
        local_irq_disable();
 
        /* Attach the new idle task to the global mm. */
@@ -381,6 +379,8 @@ void __cpuinit secondary_start_kernel(void)
 
        local_irq_enable();
 
+       bfin_setup_caches(cpu);
+
        /*
         * Calibrate loops per jiffy value.
         * IRQs need to be enabled here - D-cache can be invalidated