Hi
This cleans up the bus drivers in DRM. Instead of copying the device alloc/free
semantics into each bus driver (drm_{pci,platform,usb}.c) we now have a central
place in drm_stub.c.
This introduces drm_dev_{alloc,free,register,unregister}(). They have the same
semantics as most other kernel subsystems. *_alloc() allocates a new device and
populates the static fields and sub-objects. *_free() frees an unregistered
object allocated via *_alloc(). *_register() registers a DRM device and
*_unregister() obviously unregisters a DRM device. A *_free() is still needed
after calling *_unregister() (same as for "struct device"). No ref-counting is
added as it is not required by any driver.
Note that the bus drivers are modified to use the new helpers directly. However,
I didn't modify the drivers to use *_unregister() and *_free() directly.
Instead, the drm_put_dev() helper was modified to use these. Reason for that is
that I have pending patches to make device hotplugging safer regarding mmaps.
But these aren't ready, yet. Hopefully I can get them ready for rc5 or rc6.
Tested on nouveau.
David
David Herrmann (5):
drm: add drm_dev_alloc() helper
drm: merge device setup into drm_dev_register()
drm: move drm_lastclose() to drm_fops.c
drm: introduce drm_dev_free() to fix error paths
drm: move device unregistration into drm_dev_unregister()
drivers/gpu/drm/drm_drv.c | 70 ----------
drivers/gpu/drm/drm_fops.c | 70 ++++++++++
drivers/gpu/drm/drm_pci.c | 62 ++-------
drivers/gpu/drm/drm_platform.c | 59 +-------
drivers/gpu/drm/drm_stub.c | 310 ++++++++++++++++++++++++++++-------------
drivers/gpu/drm/drm_usb.c | 57 +-------
include/drm/drmP.h | 8 +-
7 files changed, 308 insertions(+), 328 deletions(-)
--
1.8.4
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