Chris Wilson 69fdf4206a drm: Differentiate the lack of an interface from invalid parameter ... If the ioctl is not supported on a particular piece of HW/driver combination, report ENOTSUP (aka EOPNOTSUPP) so that it can be easily distinguished from both the lack of the ioctl and from a regular invalid parameter. v2: Across all the kms ioctls we had a mixture of reporting EINVAL, ENODEV and a few ENOTSUPP (most where EINVAL) for a failed drm_core_check_feature(). Update everybody to report ENOTSUPP. v3: ENOTSUPP is an internal errno! It's value (524) does not correspond to a POSIX errno, the one we want is ENOTSUP. However, uapi/asm-generic/errno.h doesn't include ENOTSUP but man errno says "ENOTSUP and EOPNOTSUPP have the same value on Linux, but according to POSIX.1 these error values should be distinct." so use EOPNOTSUPP as its equivalent. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Daniel Vetter <daniel@ffwll.ch> Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> #v2 Link: https://patchwork.freedesktop.org/patch/msgid/20180913192050.24812-1-chris@chris-wilson.co.uk		2018-09-14 17:29:47 +01:00
..
drm	drm: Differentiate the lack of an interface from invalid parameter	2018-09-14 17:29:47 +01:00
host1x	gpu: host1x: Check whether size of unpin isn't 0	2018-07-09 10:31:30 +02:00
ipu-v3	drm pull for 4.19-rc1	2018-08-15 17:39:07 -07:00
vga	vga_switcheroo: set audio client id according to bound GPU id	2018-07-17 11:12:00 +02:00
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