powerpc: Fix doorbell type shift

doorbell type is defined as bits 32:36 so should be shifted by 63-36 =
27 rather than 28.

We never noticed this bug as we've only every used type PPC_DBELL = 0.

Signed-off-by: Michael Neuling <mikey@neuling.org>
Acked-by: Kumar Gala <galak@kernel.crashing.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/arch/powerpc/include/asm/dbell.h b/arch/powerpc/include/asm/dbell.h
index 9c70d0ca96d..efa74ac44a3 100644
--- a/arch/powerpc/include/asm/dbell.h
+++ b/arch/powerpc/include/asm/dbell.h
@@ -18,7 +18,7 @@
 #include <asm/ppc-opcode.h>
 
 #define PPC_DBELL_MSG_BRDCAST   (0x04000000)
-#define PPC_DBELL_TYPE(x)       (((x) & 0xf) << 28)
+#define PPC_DBELL_TYPE(x)       (((x) & 0xf) << (63-36))
 enum ppc_dbell {
         PPC_DBELL = 0,          /* doorbell */
         PPC_DBELL_CRIT = 1,     /* critical doorbell */