drm/vc4: copy_to_user() returns the number of bytes remaining

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The copy_to/from_user() functions return the number of bytes remaining
to be copied.  We want to return error codes here.

Also it's a bad idea to print an error message if a copy from user fails
because users can use that to spam /var/log/messages which is annoying
so I removed those.

Fixes: 214613656b ('drm/vc4: Add an interface for capturing the GPU state after a hang.')
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Eric Anholt <eric@anholt.net>

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Dan Carpenter 2015-12-17 15:36:28 +03:00 • committed by Eric Anholt

parent 21de54b3c4

commit 65c4777de5

1 changed files with 18 additions and 19 deletions

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drivers/gpu/drm/vc4/vc4_gem.c

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