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| author | Alex Deucher <alexdeucher@gmail.com> | 2014-04-16 09:42:22 -0400 |
|---|---|---|
| committer | Christian König <christian.koenig@amd.com> | 2014-04-17 14:14:41 +0200 |
| commit | 8c79bae6a30f606b7a4e17c994bc5f72f8fdaf11 (patch) | |
| tree | a8fad897868c75f5766f69ce427e93d8525386b7 /drivers | |
| parent | f8a2645ecede4eaf90b3d785f2805c8ecb76d43e (diff) | |
| download | linux-8c79bae6a30f606b7a4e17c994bc5f72f8fdaf11.tar.gz linux-8c79bae6a30f606b7a4e17c994bc5f72f8fdaf11.tar.bz2 linux-8c79bae6a30f606b7a4e17c994bc5f72f8fdaf11.zip | |
drm/radeon/si: 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
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpu/drm/radeon/si.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/gpu/drm/radeon/si.c b/drivers/gpu/drm/radeon/si.c index 86f8c9c87f5c..ac708e006180 100644 --- a/drivers/gpu/drm/radeon/si.c +++ b/drivers/gpu/drm/radeon/si.c @@ -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; |