Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux

[linux.git] / arch / mips / kernel / mips-cpc.c

diff --git a/arch/mips/kernel/mips-cpc.c b/arch/mips/kernel/mips-cpc.c
index 8af4d627b68b96d0d998ee7c4a06176af8234138..566b8d2c092c31de6293f245d81b12a899d40622 100644 (file)
--- a/arch/mips/kernel/mips-cpc.c
+++ b/arch/mips/kernel/mips-cpc.c
@@ -76,6 +76,12 @@ void mips_cpc_lock_other(unsigned int core)
        spin_lock_irqsave(&per_cpu(cpc_core_lock, curr_core),
                          per_cpu(cpc_core_lock_flags, curr_core));
        write_cpc_cl_other(core << CPC_Cx_OTHER_CORENUM_SHF);
+
+       /*
+        * Ensure the core-other region reflects the appropriate core &
+        * VP before any accesses to it occur.
+        */
+       mb();
 }
 
 void mips_cpc_unlock_other(void)