target/linux/brcm2708/patches-4.4/0450-drm-vc4-Fix-ioctl-permissions-for-render-nodes.patch

   1 From 78480484281e0a867f7de1db9f9e0f13810a29d7 Mon Sep 17 00:00:00 2001
   2 From: Herve Jourdain <herve.jourdain@neuf.fr>
   3 Date: Wed, 1 Jun 2016 02:24:46 +0800
   4 Subject: [PATCH] drm/vc4: Fix ioctl permissions for render nodes.
   5
   6 Contrary to other flags to DRM_IOCTL_DEF_DRV(), which restrict usage,
   7 the flag for render node is an enabler (the IOCTL can't be used from
   8 render node if it's not present).  So DRM_RENDER_ALLOW needs to be
   9 added to all the flags that were previously 0.
  10
  11 Signed-off-by: Herve Jourdain <herve.jourdain@neuf.fr>
  12 Reviewed-by: Eric Anholt <eric@anholt.net>
  13 Fixes: 0cd3e2747662 ("drm/vc4: Add missing render node support")
  14 (cherry picked from commit b10c22e5f9902a329450c2027e9291b71e9f1602)
  15 ---
  16  drivers/gpu/drm/vc4/vc4_drv.c | 12 ++++++------
  17  1 file changed, 6 insertions(+), 6 deletions(-)
  18
  19 --- a/drivers/gpu/drm/vc4/vc4_drv.c
  20 +++ b/drivers/gpu/drm/vc4/vc4_drv.c
  21 @@ -88,12 +88,12 @@ static const struct file_operations vc4_
  22  };
  23
  24  static const struct drm_ioctl_desc vc4_drm_ioctls[] = {
  25 -       DRM_IOCTL_DEF_DRV(VC4_SUBMIT_CL, vc4_submit_cl_ioctl, 0),
  26 -       DRM_IOCTL_DEF_DRV(VC4_WAIT_SEQNO, vc4_wait_seqno_ioctl, 0),
  27 -       DRM_IOCTL_DEF_DRV(VC4_WAIT_BO, vc4_wait_bo_ioctl, 0),
  28 -       DRM_IOCTL_DEF_DRV(VC4_CREATE_BO, vc4_create_bo_ioctl, 0),
  29 -       DRM_IOCTL_DEF_DRV(VC4_MMAP_BO, vc4_mmap_bo_ioctl, 0),
  30 -       DRM_IOCTL_DEF_DRV(VC4_CREATE_SHADER_BO, vc4_create_shader_bo_ioctl, 0),
  31 +       DRM_IOCTL_DEF_DRV(VC4_SUBMIT_CL, vc4_submit_cl_ioctl, DRM_RENDER_ALLOW),
  32 +       DRM_IOCTL_DEF_DRV(VC4_WAIT_SEQNO, vc4_wait_seqno_ioctl, DRM_RENDER_ALLOW),
  33 +       DRM_IOCTL_DEF_DRV(VC4_WAIT_BO, vc4_wait_bo_ioctl, DRM_RENDER_ALLOW),
  34 +       DRM_IOCTL_DEF_DRV(VC4_CREATE_BO, vc4_create_bo_ioctl, DRM_RENDER_ALLOW),
  35 +       DRM_IOCTL_DEF_DRV(VC4_MMAP_BO, vc4_mmap_bo_ioctl, DRM_RENDER_ALLOW),
  36 +       DRM_IOCTL_DEF_DRV(VC4_CREATE_SHADER_BO, vc4_create_shader_bo_ioctl, DRM_RENDER_ALLOW),
  37         DRM_IOCTL_DEF_DRV(VC4_GET_HANG_STATE, vc4_get_hang_state_ioctl,
  38                           DRM_ROOT_ONLY),
  39  };