From 9f591ae60e1be026901398ef99eede91237aa3a1 Mon Sep 17 00:00:00 2001 From: Gerd Hoffmann Date: Wed, 21 Mar 2018 15:08:47 +0100 Subject: [PATCH] drm/i915/gvt: throw error on unhandled vfio ioctls Git-commit: 9f591ae60e1be026901398ef99eede91237aa3a1 Patch-mainline: v4.17-rc2 References: bsc#1051510 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 Reviewed-by: Alex Williamson Signed-off-by: Zhenyu Wang Acked-by: Takashi Iwai --- 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 @@ -1231,7 +1231,7 @@ static long intel_vgpu_ioctl(struct mdev return 0; } - return 0; + return -ENOTTY; } static ssize_t