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linux-stable/drivers/gpu/drm
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Tejun Heo 9a919c46df drm: fix fallouts from slow-work -> wq conversion 
Commit 991ea75c (drm: use workqueue instead of slow-work), which made
drm to use wq instead of slow-work, didn't account for the return
value difference between delayed_slow_work_enqueue() and
queue_delayed_work().  The former returns 0 on success and -errno on
failures while the latter never fails and only uses the return value
to indicate whether the work was already pending or not.

This misconversion triggered spurious error messages.  Remove the now
unnecessary return value check and error message.

Markus: caught another incorrect conversion in drm_kms_helper_poll_enable()

Signed-off-by: Tejun Heo <tj@kernel.org>
Reported-by: Markus Trippelsdorf <markus@trippelsdorf.de>
Tested-by: Markus Trippelsdorf <markus@trippelsdorf.de>
Cc: David Airlie <airlied@linux.ie>
Cc: dri-devel@lists.freedesktop.org
2010-08-09 12:18:44 +02:00
..
i2c Merge remote branch 'nouveau/for-airlied' of ../drm-nouveau-next into drm-core-next 2010-08-02 10:31:47 +10:00
i810 drm: kill BKL from common code 2010-08-05 11:54:40 +10:00
i830 drm: kill BKL from common code 2010-08-05 11:54:40 +10:00
i915 Merge branch 'drm-core-next' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6 2010-08-05 16:02:01 -07:00
mga drm/mga: fixed brace, macro and spacing coding style issues 2010-08-02 10:17:36 +10:00
nouveau drm,io-mapping: Specify slot to use for atomic mappings 2010-08-05 08:48:53 +10:00
r128 drm/r128: fixed brace and spacing coding style issues 2010-08-02 10:17:48 +10:00
radeon drm/radeon/kms: only expose underscan on avivo chips 2010-08-05 08:47:40 +10:00
savage Merge branch 'drm-core-next' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6 2010-08-05 16:02:01 -07:00
sis drm/sis: fixed brace and spacing coding style issues 2010-08-02 10:18:17 +10:00
tdfx
ttm drm: move ttm global code to core drm 2010-08-04 09:46:06 +10:00
via drm/via: fixed coding style issues, simplified return 2010-08-02 10:17:23 +10:00
vmwgfx Merge branch 'drm-core-next' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6 2010-08-05 16:02:01 -07:00
ati_pcigart.c
drm_agpsupport.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
drm_auth.c drivers/gpu/drm: Use kzalloc 2010-05-18 15:57:05 +10:00
drm_buffer.c
drm_bufs.c Merge branch 'drm-platform' into drm-testing 2010-07-07 18:37:35 +10:00
drm_cache.c
drm_context.c
drm_crtc.c drm: Return EBUSY if the framebuffer is unbound when flipping. 2010-07-21 11:26:07 +10:00
drm_crtc_helper.c drm: fix fallouts from slow-work -> wq conversion 2010-08-09 12:18:44 +02:00
drm_debugfs.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
drm_dma.c drivers/gpu/drm: Use kzalloc 2010-05-18 15:57:05 +10:00
drm_dp_i2c_helper.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
drm_drawable.c
drm_drv.c drm: kill BKL from common code 2010-08-05 11:54:40 +10:00
drm_edid.c Merge branch 'drm-core-next' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6 2010-08-05 16:02:01 -07:00
drm_encoder_slave.c drm/kms: Simplify setup of the initial I2C encoder config. 2010-08-05 09:37:45 +10:00
drm_fb_helper.c drm_fb_helper: Preserve capability to use atomic kms 2010-08-05 09:22:32 -05:00
drm_fops.c drm: kill BKL from common code 2010-08-05 11:54:40 +10:00
drm_gem.c drm: Free the idr layers before calling idr_destroy() 2010-08-02 10:13:56 +10:00
drm_global.c drm: move ttm global code to core drm 2010-08-04 09:46:06 +10:00
drm_hashtab.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
drm_info.c drm: Add support for platform devices to register as DRM devices 2010-06-01 10:07:39 +10:00
drm_ioc32.c
drm_ioctl.c drm: Cleanup after failing to create master->unique and dev->name 2010-08-05 08:42:19 +10:00
drm_irq.c Merge branch 'drm-tracepoints' into drm-testing 2010-07-07 18:38:44 +10:00
drm_lock.c
drm_memory.c drivers/gpu/drm/drm_memory.c: fix check for end of loop 2010-04-28 18:41:51 +10:00
drm_mm.c drm: implement helper functions for scanning lru list 2010-07-07 12:29:51 +10:00
drm_modes.c drm/edid: Fix sync polarity for secondary GTF curve 2010-04-09 10:05:40 +10:00
drm_pci.c drm: Add support for platform devices to register as DRM devices 2010-06-01 10:07:39 +10:00
drm_platform.c drm: Add support for platform devices to register as DRM devices 2010-06-01 10:07:39 +10:00
drm_proc.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
drm_scatter.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
drm_sman.c
drm_stub.c drm: Free devname along with master->unique 2010-08-02 10:14:30 +10:00
drm_sysfs.c Merge branch 'drm-platform' into drm-testing 2010-07-07 18:37:35 +10:00
drm_trace.h drm: add per-event vblank event trace points 2010-07-02 14:03:24 +10:00
drm_trace_points.c drm: add vblank event trace point 2010-07-02 14:02:44 +10:00
drm_vm.c drm: Add __arm defines to DRM 2010-06-01 10:07:56 +10:00
Kconfig drm/radeon/kms: add support for internal thermal sensors (v3) 2010-08-02 10:00:00 +10:00
Makefile drm: move ttm global code to core drm 2010-08-04 09:46:06 +10:00
README.drm

README.drm 

************************************************************
* For the very latest on DRI development, please see:      *
*     http://dri.freedesktop.org/                          *
************************************************************

The Direct Rendering Manager (drm) is a device-independent kernel-level
device driver that provides support for the XFree86 Direct Rendering
Infrastructure (DRI).

The DRM supports the Direct Rendering Infrastructure (DRI) in four major
ways:

    1. The DRM provides synchronized access to the graphics hardware via
       the use of an optimized two-tiered lock.

    2. The DRM enforces the DRI security policy for access to the graphics
       hardware by only allowing authenticated X11 clients access to
       restricted regions of memory.

    3. The DRM provides a generic DMA engine, complete with multiple
       queues and the ability to detect the need for an OpenGL context
       switch.

    4. The DRM is extensible via the use of small device-specific modules
       that rely extensively on the API exported by the DRM module.


Documentation on the DRI is available from:
    http://dri.freedesktop.org/wiki/Documentation
    http://sourceforge.net/project/showfiles.php?group_id=387
    http://dri.sourceforge.net/doc/

For specific information about kernel-level support, see:

    The Direct Rendering Manager, Kernel Support for the Direct Rendering
    Infrastructure
    http://dri.sourceforge.net/doc/drm_low_level.html

    Hardware Locking for the Direct Rendering Infrastructure
    http://dri.sourceforge.net/doc/hardware_locking_low_level.html

    A Security Analysis of the Direct Rendering Infrastructure
    http://dri.sourceforge.net/doc/security_low_level.html