drm/radeon/ci: make sure mc ucode is loaded before checking the size
Avoid a possible segfault.
Noticed-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
diff --git a/drivers/gpu/drm/radeon/cik.c b/drivers/gpu/drm/radeon/cik.c
index 7e43045..199eb19 100644
--- a/drivers/gpu/drm/radeon/cik.c
+++ b/drivers/gpu/drm/radeon/cik.c
@@ -1705,11 +1705,13 @@
const __be32 *fw_data;
u32 running, blackout = 0;
u32 *io_mc_regs;
- int i, regs_size, ucode_size = rdev->mc_fw->size / 4;
+ int i, regs_size, ucode_size;
if (!rdev->mc_fw)
return -EINVAL;
+ ucode_size = rdev->mc_fw->size / 4;
+
switch (rdev->family) {
case CHIP_BONAIRE:
io_mc_regs = (u32 *)&bonaire_io_mc_regs;