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video: adf: validate dpms state passed to blank

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Change-Id: I3a4228d50fc4a2553b3e92e5675a94cbc6e71b8a
Signed-off-by: Greg Hackmann <ghackmann@google.com>
This commit is contained in:
Greg Hackmann
2013-11-20 12:10:35 -08:00
parent ccf0b45b74
commit 55fefddeea
1 changed files with 3 additions and 0 deletions
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3
drivers/video/adf/adf_client.c
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@@ -49,6 +49,9 @@ int adf_interface_blank(struct adf_interface *intf, u8 state)
if (!intf->ops || !intf->ops->blank)
return -EOPNOTSUPP;
if (state > DRM_MODE_DPMS_OFF)
return -EINVAL;
mutex_lock(&dev->client_lock);
if (state != DRM_MODE_DPMS_ON)
flush_kthread_worker(&dev->post_worker);