drm/i915/gem: Differentiate oom failures from invalid map types

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After a cursory check on the parameters to i915_gem_object_pin_map(),
where we return a precise error, if the backend rejects the mapping we
always return PTR_ERR(-ENOMEM). Let us also return a more precise error
here so we can differentiate between running out of memory and
programming errors (or situations where we may be trying different paths
and looking for an error from an unsupported map).

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Matthew Auld <matthew.auld@intel.com>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20201127195334.13134-1-chris@chris-wilson.co.uk

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Chris Wilson 2020-11-27 19:53:34 +00:00

parent d2cf0125d4

commit cb2ce93e5b

1 changed files with 12 additions and 14 deletions

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drivers/gpu/drm/i915/gem/i915_gem_pages.c

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