linux/drivers/gpu/drm
Paulo Zanoni 15b1d171d8 drm/i915: fix the "ghost eDP" encoder unwind path
Because calling intel_dp_encoder_destroy inside
intel_edp_init_connector is just wrong. This is the initialization
path, so we should properly unwind all the initialization through the
whole caller stack.

On the intel_dp_encoder_destroy function we do the following:
1 - Call i2c_del_adapter
2 - Call drm_encoder_cleanup
3 - If edp:
3.1 - Cancel panel_vdd_work
3.2 - Call ironlake_panel_vdd_of_sync
4 - Free the encoder

And here is how we unwind each specific step:
1 - We have intel_dp_init_connector -> intel_dp_i2c_init ->
    i2c_dp_aux_add_bus -> i2c_add_adapter, so we call
    i2c_del_dapter at intel_dp_init_connector
2 - Call it in the same function that called drm_encoder_init
3 - Call it in the same function that called INIT_DELAYED_WORK
4 - Free it in the same function that allocated it

Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: Zoltan Nyul <zoltan.nyul@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2013-06-28 14:14:19 +02:00
..
ast drm/ast: inline reservations 2013-06-28 12:04:04 +10:00
cirrus drm/cirrus: inline reservations 2013-06-28 12:04:05 +10:00
exynos drm: Drop all the stub gamma_get, gamma_set, load_lut functions from drivers 2013-06-17 19:42:47 +10:00
gma500 Merge branch 'gma500-fixes' of git://github.com/patjak/drm-gma500 into drm-fixes 2013-06-11 08:16:10 +10:00
i2c drm/i2c: nxp-tda998x (v3) 2013-02-19 17:57:44 -05:00
i810
i915 drm/i915: fix the "ghost eDP" encoder unwind path 2013-06-28 14:14:19 +02:00
mga
mgag200 drm/mgag200: inline reservations 2013-06-28 12:04:06 +10:00
nouveau drm/ttm: convert to the reservation api 2013-06-28 12:04:01 +10:00
omapdrm drm/gem: add mutex lock when using drm_gem_mmap_obj 2013-06-28 12:30:15 +10:00
qxl drm/ttm: convert to the reservation api 2013-06-28 12:04:01 +10:00
r128
radeon drm/radeon: get rid of ttm_bo_is_reserved usage 2013-06-28 12:04:12 +10:00
rcar-du drm: Renesas R-Car Display Unit DRM driver 2013-06-27 10:08:04 +10:00
savage drm (ast, cirrus, mgag200, nouveau, savage, vmwgfx): Remove drm_mtrr_{add, del} 2013-05-31 13:02:54 +10:00
shmobile drm/shmobile: Enable compilation on all ARM platforms 2013-06-20 10:07:14 +02:00
sis drm/sis: convert to idr_alloc() 2013-02-27 19:10:16 -08:00
tdfx
tilcdc drm/tilcdc: Clear bits of register we're going to set. 2013-06-28 09:13:00 +10:00
ttm drm/ttm: get rid of ttm_bo_is_reserved usage 2013-06-28 12:04:10 +10:00
udl drm: Drop all the stub gamma_get, gamma_set, load_lut functions from drivers 2013-06-17 19:42:47 +10:00
via drm/via: convert to idr_alloc() 2013-02-27 19:10:16 -08:00
vmwgfx drm/vmwgfx: get rid of ttm_bo_is_reserved usage 2013-06-28 12:04:14 +10:00
ati_pcigart.c
drm_agpsupport.c
drm_auth.c
drm_buffer.c
drm_bufs.c drm: Don't leak phys_wc "handles" to userspace 2013-05-31 13:37:39 +10:00
drm_cache.c lib/scatterlist: sg_page_iter: support sg lists w/o backing pages 2013-03-27 17:13:44 +01:00
drm_context.c drm: convert to idr_alloc() 2013-02-27 19:10:15 -08:00
drm_crtc_helper.c Revert "drm: kms_helper: don't lose hotplug event" 2013-06-28 20:31:34 +10:00
drm_crtc.c drm: add hotspot support for cursors. 2013-06-28 09:13:39 +10:00
drm_debugfs.c
drm_dma.c
drm_dp_helper.c
drm_drv.c drm: add hotspot support for cursors. 2013-06-28 09:13:39 +10:00
drm_edid_load.c drm: Cocci spatch "memdup.spatch" 2013-06-11 08:29:22 +10:00
drm_edid.c drm/edid: Don't print messages regarding stereo or csync by default 2013-06-27 21:15:44 +10:00
drm_encoder_slave.c drm: refactor call to request_module 2013-05-10 14:46:03 +10:00
drm_fb_cma_helper.c Merge branch 'tilcdc-next' of git://people.freedesktop.org/~robclark/linux into drm-next 2013-02-21 09:31:47 +10:00
drm_fb_helper.c drm/fb-helper: Make load_lut and gamma_set/gamma_get hooks optional 2013-06-17 19:42:47 +10:00
drm_fops.c drm: correctly restore mappings if drm_open fails 2013-04-03 06:44:38 +10:00
drm_gem_cma_helper.c drm/gem: add mutex lock when using drm_gem_mmap_obj 2013-06-28 12:30:15 +10:00
drm_gem.c drm/gem: fix not to assign error value to gem name 2013-06-28 12:31:23 +10:00
drm_global.c
drm_hashtab.c hlist: drop the node parameter from iterators 2013-02-27 19:10:24 -08:00
drm_info.c
drm_ioc32.c
drm_ioctl.c drm: Don't leak phys_wc "handles" to userspace 2013-05-31 13:37:39 +10:00
drm_irq.c drm: fix a use-after-free when GPU acceleration disabled 2013-06-03 19:12:04 +10:00
drm_lock.c
drm_memory.c
drm_mm.c drm/mm: fix dump table BUG 2013-04-30 15:15:58 +02:00
drm_modes.c drm: Sort connector modes based on vrefresh 2013-06-11 08:35:51 +10:00
drm_pci.c drm, agpgart: Use pgprot_writecombine for AGP maps and make the MTRR optional 2013-05-31 13:37:31 +10:00
drm_platform.c
drm_prime.c drm/prime: add return check for dma_buf_fd 2013-06-28 14:43:04 +10:00
drm_proc.c drm: proc: Use remove_proc_subtree() 2013-05-01 17:29:44 -04:00
drm_rect.c drm: Add drm_rect_debug_print() 2013-04-30 22:20:00 +02:00
drm_scatter.c
drm_stub.c drm: drm_stub: Fixing return value if driver master_set call failed 2013-06-27 21:03:16 +10:00
drm_sysfs.c
drm_trace_points.c
drm_trace.h
drm_usb.c drm/usb: bind driver to correct device 2013-02-07 12:37:41 +10:00
drm_vm.c drm_vm: drop explicit VM_IO setting 2013-06-24 06:26:50 +10:00
Kconfig drm/nouveau: always select ACPI_VIDEO if ACPI is enabled. 2013-06-28 11:56:22 +10:00
Makefile drm: Renesas R-Car Display Unit DRM driver 2013-06-27 10:08:04 +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