drm/i915: Refactor ttm ghost obj detection

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[ Upstream commit 6667d78a11 ]

Currently i915_ttm_to_gem() returns NULL for ttm ghost
object which makes it unclear when we should add a NULL
check for a caller of i915_ttm_to_gem() as ttm ghost
objects are expected behaviour for certain cases.

Create a separate function to detect ttm ghost object and
use that in places where we expect a ghost obj from ttm.

Signed-off-by: Nirmoy Das <nirmoy.das@intel.com>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Signed-off-by: Matthew Auld <matthew.auld@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221014131427.21102-1-nirmoy.das@intel.com
Stable-dep-of: 1cacd6894d ("drm/i915/dgfx: Grab wakeref at i915_ttm_unmap_virtual")
Signed-off-by: Sasha Levin <sashal@kernel.org>

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This commit is contained in:

Nirmoy Das 2022-10-14 15:14:27 +02:00 • committed by Greg Kroah-Hartman

parent ed52edf444

commit 37ec70c44e

3 changed files with 24 additions and 17 deletions

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21

drivers/gpu/drm/i915/gem/i915_gem_ttm.c

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18

drivers/gpu/drm/i915/gem/i915_gem_ttm.h

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2

drivers/gpu/drm/i915/gem/i915_gem_ttm_move.c

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