kernel/drivers/gpu/drm/drm_scatter.c, branch linux-5.1.y

drm: Differentiate the lack of an interface from invalid parameter

2018-09-14T16:29:47Z

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 Cc: Daniel Vetter Cc: Ville Syrjälä Reviewed-by: Daniel Vetter #v2 Link: https://patchwork.freedesktop.org/patch/msgid/20180913192050.24812-1-chris@chris-wilson.co.uk

drm: Used DRM_LEGACY for all legacy functions

2016-08-08T08:05:23Z

Except for nouveau, only legacy drivers need this really. And nouveau is already marked up with DRIVER_KMS_LEGACY_CONTEXT as the special case. I've tried to be careful to leave everything related to modeset still using the DRIVER_MODESET flag. Otherwise it's a direct replacement of !DRIVER_MODESET with DRIVER_LEGACY checks. Also helps readability since fewer negative checks overall. Reviewed-by: David Herrmann Reviewed-by: Frank Binns Signed-off-by: Daniel Vetter Link: http://patchwork.freedesktop.org/patch/msgid/1470251470-30830-2-git-send-email-daniel.vetter@ffwll.ch

drm: Fix broken use of _PAGE_NO_CACHE on powerpc

2016-07-12T11:20:39Z

That constant isn't meant to be used outside of arch mm code Signed-off-by: Benjamin Herrenschmidt Signed-off-by: Daniel Vetter Link: http://patchwork.freedesktop.org/patch/msgid/1467018023.20278.65.camel@kernel.crashing.org

drm: Move sg functions into drm_legacy.h

2014-09-12T09:08:54Z

Also sprinkle the drm_legacy_ prefix where missing. v2: Drop extern from function declarations and include "drm_legacy.h" in drm_scatter.c, spotted by David. Cc: David Herrmann Signed-off-by: Daniel Vetter

drm: disallow legacy sg ioctls for modesetting drivers

2013-08-19T00:04:06Z

Only the radeon/r128/ati ums drivers use this. Furthermore the cleanup was already only done for UMS drivers. Also a quick check of the ATI ddx git history shows that only the UMS code ever used this facility. So we can safely disallow these pair of ioctls for modesetting drivers. Reviewed-by: Eric Anholt Signed-off-by: Daniel Vetter Signed-off-by: Dave Airlie

drm: hide legacy sg cleanup better from common code

2013-08-19T00:03:49Z

I've decided that some clear markers for what's legacy dri1/non-gem code is useful. I've opted to use the drm_legacy prefix and then hide all the checks in that function for better readability in the common code. Reviewed-by: Eric Anholt Signed-off-by: Daniel Vetter Signed-off-by: Dave Airlie

drm: fold in drm_sg_alloc into the ioctl

2013-07-23T09:34:01Z

There's no other caller from driver code, so we can fold this in. Signed-off-by: Daniel Vetter Signed-off-by: Dave Airlie

UAPI: (Scripted) Convert #include "..." to #include in drivers/gpu/

2012-10-02T17:01:07Z

Convert #include "..." to #include in drivers/gpu/. Signed-off-by: David Howells Acked-by: Dave Airlie Acked-by: Arnd Bergmann Acked-by: Thomas Gleixner Acked-by: Paul E. McKenney Acked-by: Dave Jones

drivers: use kzalloc/kcalloc instead of 'kmalloc+memset', where possible

2011-07-26T03:57:13Z

Signed-off-by: Rakib Mullick Cc: Jeff Garzik Cc: David Airlie Cc: Tejun Heo Cc: Joe Perches Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

drm: don't export drm_sg_alloc

2010-08-29T23:37:43Z

It's not used internally by any driver, only by some generic ioctls. So don't export it. Signed-off-by: Daniel Vetter Signed-off-by: Dave Airlie