Merge branch 'upstream-linus' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik...

[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..e6fb194fe537dfb941261641f8d33b1eb92e5c4f 100644 (file)
--- a/arch/powerpc/kernel/pmc.c
+++ b/arch/powerpc/kernel/pmc.c
@@ -43,8 +43,13 @@ 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