linux/drivers/gpu/drm
Imre Deak 713028b3ce drm/i915: remove extraneous VGA power domain put calls
In recent dmesg logs reported for unrelated issues I noticed some power
domain WARNs caused by the following.

The workaround

commit ce35255032
Author: Ville Syrjälä <ville.syrjala@linux.intel.com>
Date:   Fri Sep 20 10:14:23 2013 +0300

    drm/i915: Fix unclaimed register access due to delayed VGA memory disable

and following fixup of it

commit a148532065
Author: Ville Syrjälä <ville.syrjala@linux.intel.com>
Date:   Mon Sep 16 17:38:34 2013 +0300

    drm/i915: Move power well init earlier during driver load

was partially reverted by

commit 7f16e5c141
Merge: 9d1cb91 5e01dc7
Author: Daniel Vetter <daniel.vetter@ffwll.ch>
Date:   Mon Nov 4 16:28:47 2013 +0100

    Merge tag 'v3.12' into drm-intel-next

but kept the power domain put calls on the error path.

I think for now we can keep things as-is (not reintroduce the w/a) and just fix
the error path, since
- nobody complained seeing this issue
- according to Ville someone is reworking the VGA arbitration scheme at the
  moment and when that's ready we have to rethink this part anyway

So fix this by just removing the put calls from the error path as well.

Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2014-05-05 09:09:17 +02:00
..
armada drm: pass the irq explicitly to drm_irq_install 2014-04-23 10:32:50 +02:00
ast Merge branch 'drm-init-cleanup' of git://people.freedesktop.org/~danvet/drm into drm-next 2014-05-01 09:32:21 +10:00
bochs drm/bochs: Remove unecessary NULL check in gem_free 2014-04-22 15:39:40 +02:00
bridge drm/bridge: export ptn3460_init function 2014-04-04 21:24:50 +09:00
cirrus drm/cirrus: Remove unecessary NULL check in gem_free 2014-04-22 15:39:07 +02:00
exynos drm/exynos: use %pad for dma_addr_t 2014-04-30 09:48:54 +10:00
gma500 drm: pass the irq explicitly to drm_irq_install 2014-04-23 10:32:50 +02:00
i2c drm/i2c/tda998x: Fix signed overflow issue 2014-04-22 15:39:41 +02:00
i810
i915 drm/i915: remove extraneous VGA power domain put calls 2014-05-05 09:09:17 +02:00
mga drm: remove drm_dev_to_irq from drivers 2014-04-22 11:41:12 +02:00
mgag200 drm/mgag200: Remove unecessary NULL check in gem_free 2014-04-22 15:39:04 +02:00
msm Merge branch 'drm-init-cleanup' of git://people.freedesktop.org/~danvet/drm into drm-next 2014-05-01 09:32:21 +10:00
nouveau drm: Rip out totally bogus vga_switcheroo->can_switch locking 2014-04-23 10:32:33 +02:00
omapdrm drm/omap: fix the handling of fb ref counts 2014-04-15 16:40:01 +03:00
panel drm/panel: Changes for v3.15-rc1 2014-04-05 16:12:27 +10:00
qxl Merge branch 'drm-init-cleanup' of git://people.freedesktop.org/~danvet/drm into drm-next 2014-05-01 09:32:21 +10:00
r128 drm: remove drm_dev_to_irq from drivers 2014-04-22 11:41:12 +02:00
radeon Merge branch 'drm-init-cleanup' of git://people.freedesktop.org/~danvet/drm into drm-next 2014-05-01 09:32:21 +10:00
rcar-du drm/rcar-du: Handle encoder initialization failures 2014-04-04 08:02:54 +10:00
savage
shmobile drm: pass the irq explicitly to drm_irq_install 2014-04-23 10:32:50 +02:00
sis
tdfx
tegra Merge branch 'drm-init-cleanup' of git://people.freedesktop.org/~danvet/drm into drm-next 2014-05-01 09:32:21 +10:00
tilcdc drm: pass the irq explicitly to drm_irq_install 2014-04-23 10:32:50 +02:00
ttm Merge tag 'ttm-next-2014-04-04' of git://people.freedesktop.org/~thomash/linux into drm-next 2014-04-05 16:07:39 +10:00
udl drm/udl: Initialize ret in udl_driver_load 2014-04-22 15:39:37 +02:00
via drm/via: Remove unecessary NULL check 2014-04-22 15:39:11 +02:00
vmwgfx Merge branch 'drm-init-cleanup' of git://people.freedesktop.org/~danvet/drm into drm-next 2014-05-01 09:32:21 +10:00
ati_pcigart.c
drm_agpsupport.c
drm_auth.c
drm_buffer.c
drm_bufs.c drm: rename dev->count_lock to dev->buf_lock 2014-04-23 10:32:43 +02:00
drm_cache.c Merge tag 'drm-intel-next-2014-04-16' of git://anongit.freedesktop.org/drm-intel into drm-next 2014-05-01 09:11:37 +10:00
drm_context.c
drm_crtc_helper.c drm: Split out drm_probe_helper.c from drm_crtc_helper.c 2014-04-18 13:21:17 +10:00
drm_crtc_internal.h drm: move drm_mode related functions into drm_modes.c 2014-03-13 12:48:40 +01:00
drm_crtc.c drm: Allow userspace to ask for universal plane list (v2) 2014-04-01 20:18:29 -04:00
drm_debugfs.c
drm_dma.c
drm_dp_helper.c drm/dp/i2c: Update comments about common i2c over dp assumptions (v3) 2014-04-08 16:12:39 +02:00
drm_drv.c drm: Add a function to get the ioctl flags 2014-03-28 14:19:02 +01:00
drm_edid_load.c
drm_edid.c Merge branch 'topic/core-stuff' of git://git.freedesktop.org/git/drm-intel into drm-next 2014-03-18 19:23:22 +10:00
drm_encoder_slave.c
drm_fb_cma_helper.c
drm_fb_helper.c drm: Prefer noninterlace cmdline mode unless explicitly specified 2014-04-04 10:07:03 +10:00
drm_flip_work.c
drm_fops.c Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux 2014-04-08 09:52:16 -07:00
drm_gem_cma_helper.c drm: gem-cma: Fix warnings due to improper printk formats 2014-04-04 10:13:48 +10:00
drm_gem.c Merge branch 'drm-docs' of ssh://people.freedesktop.org/~danvet/drm into drm-next 2014-03-18 19:09:10 +10:00
drm_global.c
drm_hashtab.c
drm_info.c drm: remove drm_bus->get_name 2014-04-23 10:32:53 +02:00
drm_ioc32.c
drm_ioctl.c drm: rip out dev->devname 2014-04-23 10:32:52 +02:00
drm_irq.c drm: rip out dev->devname 2014-04-23 10:32:52 +02:00
drm_lock.c
drm_memory.c
drm_mipi_dsi.c drm/mipi_dsi: create dsi devices only for nodes with reg property 2014-04-04 21:24:47 +09:00
drm_mm.c drm/mm: Don't WARN if drm_mm_reserve_node 2014-04-10 10:54:47 +03:00
drm_modes.c drm: try harder to avoid regression when merging mode bits 2014-05-01 09:26:53 +10:00
drm_panel.c
drm_pci.c drm: Remove dev->kdriver 2014-04-23 10:32:54 +02:00
drm_plane_helper.c drm/plane-helper: Don't fake-implement primary plane disabling 2014-04-18 13:18:50 +10:00
drm_platform.c drm: Remove dev->kdriver 2014-04-23 10:32:54 +02:00
drm_prime.c Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux 2014-04-08 09:52:16 -07:00
drm_probe_helper.c drm: try harder to avoid regression when merging mode bits 2014-05-01 09:26:53 +10:00
drm_rect.c
drm_scatter.c
drm_stub.c Merge branch 'drm-init-cleanup' of git://people.freedesktop.org/~danvet/drm into drm-next 2014-05-01 09:32:21 +10:00
drm_sysfs.c
drm_trace_points.c
drm_trace.h
drm_usb.c drm: Remove dev->kdriver 2014-04-23 10:32:54 +02:00
drm_vm.c
drm_vma_manager.c
Kconfig drm/bridge: Add PTN3460 bridge driver 2014-03-24 00:36:37 +09:00
Makefile drm: Split out drm_probe_helper.c from drm_crtc_helper.c 2014-04-18 13:21:17 +10:00
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