On unknown/unhandled ioctls the driver should return an error, so
userspace knows it tried to use something unsupported.
Cc: sta...@vger.kernel.org
Signed-off-by: Gerd Hoffmann <kra...@redhat.com>
---
drivers/gpu/drm/i915/gvt/kvmgt.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/gvt/kvmgt.c b/drivers/gpu/drm/i915/gvt/kvmgt.c
index 021f722e24..be881d53c2 100644
--- 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_device *mdev,
unsigned int cmd,
}
- return 0;
+ return -EINVAL;
}
static ssize_t
--
2.9.3
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