[POWERPC] implement BEGIN/END_FW_FTR_SECTION

[karo-tx-linux.git] / arch / powerpc / kernel / pmc.c

diff --git a/arch/powerpc/kernel/pmc.c b/arch/powerpc/kernel/pmc.c
index 2d333cc84082a3e483700a7fc4d01e52b726d10d..a0a2efadeabf8fbbed432e506360d14f85c1770f 100644 (file)
--- a/arch/powerpc/kernel/pmc.c
+++ b/arch/powerpc/kernel/pmc.c
@@ -12,7 +12,6 @@
  *  2 of the License, or (at your option) any later version.
  */
 
-#include <linux/config.h>
 #include <linux/errno.h>
 #include <linux/spinlock.h>
 #include <linux/module.h>
@@ -43,8 +42,13 @@ static void dummy_perf(struct pt_regs *regs)
        mtspr(SPRN_MMCR0, mmcr0);
 }
 #else
+/* Ensure exceptions are disabled */
 static void dummy_perf(struct pt_regs *regs)
 {
+       unsigned int mmcr0 = mfspr(SPRN_MMCR0);
+
+       mmcr0 &= ~(MMCR0_PMXE);
+       mtspr(SPRN_MMCR0, mmcr0);
 }
 #endif