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(parent: 19e0b4c) | patch
drm/i915: Fix copy_to_user usage for pipe_crc
authorRodrigo Vivi <rodrigo.vivi@intel.com>
Wed, 3 Aug 2016 15:22:57 +0000 (08:22 -0700)
committerRodrigo Vivi <rodrigo.vivi@intel.com>
Fri, 5 Aug 2016 16:39:47 +0000 (09:39 -0700)
commit4e9121e6b4f9fee47e6746bfdb6745951b7a9b20
tree2ccca24d811228b3cce05268d0f48f70548decc5tree | snapshot
parent19e0b4cab9cf3c07bc84360a854f9040d8c64644commit | diff
drm/i915: Fix copy_to_user usage for pipe_crc

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>
drivers/gpu/drm/i915/i915_debugfs.c diff | blob | history
https://github.com/torvalds/linux.git