drm/radeon/kms: fix bad cast/shift in evergreen.c

Missing parens.

fixes:
https://bugs.freedesktop.org/show_bug.cgi?id=30718

Reported-by: Dave Gilbert <freedesktop@treblig.org>
Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Reviewed-by: Matt Turner <mattst88@gmail.com>
Cc: stable@kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>

diff --git a/drivers/gpu/drm/radeon/evergreen.c b/drivers/gpu/drm/radeon/evergreen.c
index a90f0c03b838c98edf2a49333b20fdad5754b924..2f93d46ae69ad58dfb90ea5db02021a402506ae5 100644 (file)
--- a/drivers/gpu/drm/radeon/evergreen.c
+++ b/drivers/gpu/drm/radeon/evergreen.c
@@ -1137,7 +1137,7 @@ static void evergreen_gpu_init(struct radeon_device *rdev)
 
                WREG32(RCU_IND_INDEX, 0x203);
                efuse_straps_3 = RREG32(RCU_IND_DATA);
-               efuse_box_bit_127_124 = (u8)(efuse_straps_3 & 0xF0000000) >> 28;
+               efuse_box_bit_127_124 = (u8)((efuse_straps_3 & 0xF0000000) >> 28);
 
                switch(efuse_box_bit_127_124) {
                case 0x0: