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3 Commits

Author SHA1 Message Date
Haixia Shi
e38648f95d drm/udl: properly check for error pointers 
The drm_prime_pages_to_sg() function never returns NULL pointers, only
error pointers and valid pointers.

Signed-off-by: Haixia Shi <hshi@chromium.org>
Reviewed-by: Stéphane Marchesin <marcheu@chromium.org>
Signed-off-by: Dave Airlie <airlied@redhat.com>
 2014-11-26 10:03:18 +10:00
Haixia Shi
4bc158e0be drm/udl: handle page mapping in dmabuf export. 
Fixes dmabuf export failure with -E_NOMEM when the page is not mapped.

Signed-off-by: Haixia Shi <hshi@chromium.org>
Reviewed-by: Stéphane Marchesin <marcheu@chromium.org>
Signed-off-by: Dave Airlie <airlied@redhat.com>
 2014-11-26 10:03:00 +10:00
Haixia Shi
ebfdd6d5e8 drm/udl: add support to export a handle to a FD on UDL. 
Only importing an FD to a handle is currently supported on UDL,
but the exporting functionality is equally useful.

Signed-off-by: Haixia Shi <hshi@chromium.org>
Reviewed-by: Stéphane Marchesin <marcheu@chromium.org>
Signed-off-by: Dave Airlie <airlied@redhat.com>
 2014-11-20 11:41:37 +10:00