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Commit 8c79bae6 authored by Alex Deucher's avatar Alex Deucher Committed by Christian König
Browse files

drm/radeon/si: make sure mc ucode is loaded before checking the size 



Avoid a possible segfault.

Noticed-by: default avatarDan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
parent f8a2645e

drivers/gpu/drm/radeon/si.c

+3 −1
Original line number Diff line number Diff line
@@ -1472,11 +1472,13 @@ int si_mc_load_microcode(struct radeon_device *rdev) 
	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_TAHITI:

		io_mc_regs = (u32 *)&tahiti_io_mc_regs;