4.16-stable review patch. If anyone has any objections, please let me know.
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From: Gerd Hoffmann kraxel@redhat.com
commit 9f591ae60e1be026901398ef99eede91237aa3a1 upstream.
On unknown/unhandled ioctls the driver should return an error, so userspace knows it tried to use something unsupported.
Cc: stable@vger.kernel.org Signed-off-by: Gerd Hoffmann kraxel@redhat.com Reviewed-by: Alex Williamson alex.williamson@redhat.com Signed-off-by: Zhenyu Wang zhenyuw@linux.intel.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- drivers/gpu/drm/i915/gvt/kvmgt.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/gpu/drm/i915/gvt/kvmgt.c +++ b/drivers/gpu/drm/i915/gvt/kvmgt.c @@ -1284,7 +1284,7 @@ static long intel_vgpu_ioctl(struct mdev
}
- return 0; + return -ENOTTY; }
static ssize_t