linux-stable.git/drivers/gpu/drm/ast, branch v3.18.48

drivers/gpu/drm/ast: Fix infinite loop if read fails

2017-01-15T14:49:52+00:00

[ Upstream commit 298360af3dab45659810fdc51aba0c9f4097e4f6 ]

ast_get_dram_info() configures a window in order to access BMC memory.
A BMC register can be configured to disallow this, and if so, causes
an infinite loop in the ast driver which renders the system unusable.

Fix this by erroring out if an error is detected.  On powerpc systems with
EEH, this leads to the device being fenced and the system continuing to
operate.

Cc:  # 3.10+
Signed-off-by: Russell Currey 
Reviewed-by: Joel Stanley 
Signed-off-by: Daniel Vetter 
Link: http://patchwork.freedesktop.org/patch/msgid/20161215051241.20815-1-ruscur@russell.cc
Signed-off-by: Sasha Levin

drm/fb-helper: Propagate errors from initial config failure

2016-06-20T03:47:41+00:00

[ Upstream commit 01934c2a691882185b3021d437df13bcba07711d ]

Make drm_fb_helper_initial_config() return an int rather than a bool so
that the error can be properly propagated. While at it, update drivers
to propagate errors further rather than just ignore them.

v2:
- cirrus: No cleanup is required, the top-level cirrus_driver_load()
  will do it as part of cirrus_driver_unload() in its cleanup path.
  Reported-by: Fengguang Wu 

Cc: David Airlie 
Cc: Daniel Vetter 
Cc: Patrik Jakobsson 
Cc: Rob Clark 
Cc: Tomi Valkeinen 
Cc: Alex Deucher 
Cc: Christian König 
Cc: Ben Skeggs 
Signed-off-by: Thierry Reding 
Reviewed-by: Alex Deucher 
Reviewed-by: Patrik Jakobsson 
Reviewed-by: Christian König 
[danvet: Squash in simplification patch from kbuild.]
Signed-off-by: Daniel Vetter 

Signed-off-by: Sasha Levin

drm/ast: Fix incorrect register check for DRAM width

2016-03-13T17:53:40+00:00

[ Upstream commit 2d02b8bdba322b527c5f5168ce1ca10c2d982a78 ]

During DRAM initialization on certain ASpeed devices, an incorrect
bit (bit 10) was checked in the "SDRAM Bus Width Status" register
to determine DRAM width.

Query bit 6 instead in accordance with the Aspeed AST2050 datasheet v1.05.

Signed-off-by: Timothy Pearson 
Cc: stable@vger.kernel.org
Signed-off-by: Dave Airlie 
Signed-off-by: Sasha Levin

drm/ast: Fix HW cursor image

2014-10-07T23:05:29+00:00

The translation from the X driver to the KMS one typo'ed a couple
of array indices, causing the HW cursor to look weird (blocky with
leaking edge colors). This fixes it.

Signed-off-by: Benjamin Herrenschmidt 
Cc: stable@vger.kernel.org
Signed-off-by: Dave Airlie

Merge branch 'for-airlied-next' of git://people.freedesktop.org/~mlankhorst/linux into drm-next

2014-10-01T09:27:38+00:00

fixups for nouveau and fencing

* 'for-airlied-next' of git://people.freedesktop.org/~mlankhorst/linux:
  drm/nouveau: export reservation_object from dmabuf to ttm
  drm/ttm: add reservation_object as argument to ttm_bo_init
  drm: Pass dma-buf as argument to gem_prime_import_sg_table
  drm/nouveau: assign fence_chan->name correctly
  drm/nouveau: specify if interruptible wait is desired in nouveau_fence_sync
  drm/nouveau: bump driver patchlevel to 1.2.1

drm/ttm: add reservation_object as argument to ttm_bo_init

2014-09-30T12:04:00+00:00

This allows importing reservation objects from dma-bufs.

Signed-off-by: Maarten Lankhorst

drm/ast: use container_of to resolve ast_fbdev from drm_fb_helper

2014-09-24T10:09:27+00:00

Use container_of instead of casting first structure member.

Signed-off-by: Fabian Frederick 
Signed-off-by: Daniel Vetter

drm: Extract

2014-09-24T01:43:41+00:00

v2: Don't forget git add, noticed by David.

Cc: David Herrmann 

Signed-off-by: Daniel Vetter 
Acked-by: David Herrmann 
Acked-by: Alex Deucher 
Signed-off-by: Dave Airlie

drm/: Don't call drm_mmap

2014-09-24T01:42:51+00:00

Really, the legacy buffer api should be dead, especially for all these
newfangled drivers. I suspect this is copypasta from the transitioning
days, which probably originated in radeon.

Cc: "Christian König" 
Cc: David Herrmann 
Cc: Rashika 
Cc: Josh Triplett 
Cc: Daniel Vetter 
Cc: Fabian Frederick 
Cc: Gerd Hoffmann 
Cc: Alexandre Courbot 
Cc: Maarten Lankhorst 
Cc: Christian Engelmayer 
Signed-off-by: Daniel Vetter 
Reviewed-by: David Herrmann 
Acked-by: Ben Skeggs 
Acked-by: Alex Deucher 
Signed-off-by: Dave Airlie

Merge branch 'drm-next-ast-fixes' of ssh://people.freedesktop.org/~/linux into drm-next

2014-09-16T04:59:16+00:00

Pull in first set of changes from Ben for ast on ppc.

I've done a quick boot test on x86 and it still seems to boot.

* 'drm-next-ast-fixes' of ssh://people.freedesktop.org/~/linux:
  drm/ast: Cleanup analog init code path
  drm/ast: Don't assume DVO enabled means SIL164 on uninitialized chips
  drm/ast: Properly initialize P2A base before using it in ast_init_3rdtx()
  drm/ast: POST chip at probe time if VGA not enabled
  drm/ast: Try to use MMIO registers when PIO isn't supported