diff options
| author | Sinclair Yeh | 2016-06-30 01:31:01 +0200 |
|---|---|---|
| committer | Sinclair Yeh | 2016-07-01 19:47:47 +0200 |
| commit | a9cd9c044aa90ba2b31d1bf3e3432f38fb1d25fe (patch) | |
| tree | 48027336cfde7b01894711086e59caa183156594 /drivers/gpu | |
| parent | drm/atomic: Make drm_atomic_legacy_backoff reset crtc->acquire_ctx (diff) | |
| download | kernel-qcow2-linux-a9cd9c044aa90ba2b31d1bf3e3432f38fb1d25fe.tar.gz kernel-qcow2-linux-a9cd9c044aa90ba2b31d1bf3e3432f38fb1d25fe.tar.xz kernel-qcow2-linux-a9cd9c044aa90ba2b31d1bf3e3432f38fb1d25fe.zip | |
drm/vmwgfx: Add a check to handle host message failure
Discovered by static code analysis tool. If for some reason communication
with the host fails more than preset number of retries, return an error
instead of return garbage.
Signed-off-by: Sinclair Yeh <syeh@vmware.com>
Reviewed-by: Charmaine Lee <charmainel@vmware.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/vmwgfx/vmwgfx_msg.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_msg.c b/drivers/gpu/drm/vmwgfx/vmwgfx_msg.c index f0374f9b56ca..e57a0bad7a62 100644 --- a/drivers/gpu/drm/vmwgfx/vmwgfx_msg.c +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_msg.c @@ -300,6 +300,9 @@ static int vmw_recv_msg(struct rpc_channel *channel, void **msg, break; } + if (retries == RETRIES) + return -EINVAL; + *msg_len = reply_len; *msg = reply; |