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The drm device drivers currently allow seeking on the
character device but never care about the actual
file position.
When we change the default llseek operation to be
no_llseek, calling llseek on a drm device would
return an error condition, which is an API change.
Explicitly setting noop_llseek lets us keep the
current API.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: David Airlie <airlied@linux.ie>
Cc: dri-devel@lists.freedesktop.org
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A few typos in the DRM Developer's Guide.
Signed-off-by: Nicolas Kaiser <nikai@nikai.net>
Acked-by: Jesse Barnes <jesse.barnes@intel.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
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Add a DRM DocBook providing basic information about DRM interfaces, including
TTM, GEM, KMS and vblank infrastructure. Intended to provide information to
new and existing developers about how to perform driver initialization,
implement mode setting and other DRM features.
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Dave Airlie <airlied@redhat.com>
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Arnd Bergmann
Nicolas Kaiser
Jesse Barnes