drm/i915: Fix copy_to_user usage for pipe_crc

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Copy to user return the number of bytes it couldn't write
and zero on success. So any number different than 0 should
be considered a fault, not only when it doesn't write
the full size.

v2: fixed the inverted logic. (Ville)

Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>

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Rodrigo Vivi 2016-08-03 08:22:57 -07:00

parent 19e0b4cab9

commit 4e9121e6b4

1 changed files with 1 additions and 3 deletions

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drivers/gpu/drm/i915/i915_debugfs.c

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