drm/nouveau/bios: fix thinko in ZM_MASK_ADD opcode
Cc: stable@vger.kernel.org
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
diff --git a/drivers/gpu/drm/nouveau/core/subdev/bios/init.c b/drivers/gpu/drm/nouveau/core/subdev/bios/init.c
index c300b5e..c434d39 100644
--- a/drivers/gpu/drm/nouveau/core/subdev/bios/init.c
+++ b/drivers/gpu/drm/nouveau/core/subdev/bios/init.c
@@ -1940,8 +1940,8 @@
trace("ZM_MASK_ADD\tR[0x%06x] &= 0x%08x += 0x%08x\n", addr, mask, add);
init->offset += 13;
- data = init_rd32(init, addr) & mask;
- data |= ((data + add) & ~mask);
+ data = init_rd32(init, addr);
+ data = (data & mask) | ((data + add) & ~mask);
init_wr32(init, addr, data);
}