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| author | Daniel Thompson <daniel.thompson@linaro.org> | 2015-12-22 21:36:44 (GMT) |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2016-02-09 08:25:12 (GMT) |
| commit | bfe981a0952880df43d08a050bf3ae44aaebd795 (patch) | |
| tree | 8c6e79fdb82c2ff71b4edb630ea93a24d850cd14 /drivers/of | |
| parent | 10c1b6183a163aca59ba92b88f2b4c4cecd20d4c (diff) | |
| download | linux-bfe981a0952880df43d08a050bf3ae44aaebd795.tar.xz | |
drm: prime: Honour O_RDWR during prime-handle-to-fd
Currently DRM_IOCTL_PRIME_HANDLE_TO_FD rejects all flags except
(DRM|O)_CLOEXEC making it difficult (maybe impossible) for userspace
to mmap() the resulting dma-buf even when this is supported by the
DRM driver.
It is trivial to relax the restriction and permit read/write access.
This is safe because the flags are seldom touched by drm; mostly they
are passed verbatim to dma_buf calls.
v3 (Tiago): removed unused flags variable from drm_prime_handle_to_fd_ioctl.
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org>
Signed-off-by: Tiago Vignatti <tiago.vignatti@intel.com>
Reviewed-by: Stéphane Marchesin <marcheu@chromium.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1450820214-12509-2-git-send-email-tiago.vignatti@intel.com
Diffstat (limited to 'drivers/of')
0 files changed, 0 insertions, 0 deletions