gpu: nvgpu: fix -EINVAL retval in ioctls

Proper error number for invalid request number is EINVAL instead of
EFAULT, so change it in ioctl calls.

Change-Id: I8fddd34e012700550e9e30fe17ba7152b3a0417b
Signed-off-by: Konsta Holtta <kholtta@nvidia.com>
Reviewed-on: http://git-master/r/542563
Reviewed-by: Automatic_Commit_Validation_User
GVS: Gerrit_Virtual_Submit
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/channel_gk20a.c b/drivers/gpu/nvgpu/gk20a/channel_gk20a.c
index fdeb8265..34c95483 100644
--- a/drivers/gpu/nvgpu/gk20a/channel_gk20a.c
+++ b/drivers/gpu/nvgpu/gk20a/channel_gk20a.c
@@ -2220,7 +2220,7 @@ long gk20a_channel_ioctl(struct file *filp,
                 (_IOC_NR(cmd) == 0) ||
                 (_IOC_NR(cmd) > NVHOST_IOCTL_CHANNEL_LAST) ||
                 (_IOC_SIZE(cmd) > NVHOST_IOCTL_CHANNEL_MAX_ARG_SIZE))
-                return -EFAULT;
+                return -EINVAL;
 
         if (_IOC_DIR(cmd) & _IOC_WRITE) {
                 if (copy_from_user(buf, (void __user *)arg, _IOC_SIZE(cmd)))