powerpc: Set DSCR bit in FSCR setup

We support DSCR (Data Stream Control Register) so we should make sure we set it
in the FSCR (Facility Status & Control Register) incase some firmwares don't
set it.  If we don't set this, we'll take a facility unavailable exception when
using the DSCR.

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

diff --git a/arch/powerpc/kernel/cpu_setup_power.S b/arch/powerpc/kernel/cpu_setup_power.S
index bb2d2034d61f0903d52faa84e016f5ac404e5739..ea847abb0d0a5fae6738c1bed0dc863d78358ded 100644 (file)
--- a/arch/powerpc/kernel/cpu_setup_power.S
+++ b/arch/powerpc/kernel/cpu_setup_power.S
@@ -116,7 +116,7 @@ __init_LPCR:
 
 __init_FSCR:
        mfspr   r3,SPRN_FSCR
-       ori     r3,r3,FSCR_TAR
+       ori     r3,r3,FSCR_TAR|FSCR_DSCR
        mtspr   SPRN_FSCR,r3
        blr