staging: comedi: jr3_pci: check sizes at compile time

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The driver currently checks the size of `struct jr3_sensor` is correct
when a device is attached, returning an error if it is wrong.  Replace
that with a compile-time check.  We don't care too much about the size
of `struct jr3_sensor` as it is embedded in the larger `struct
jr3_block` and is followed by a lot of padding.  We should care more
that the size of `struct jr3_block` is correct, as it describes the
overall register layout of a block, and there is an array of such blocks
(one per subdevice).  Check its size at compile-time using the
`BUILD_BUG_ON()` macro.

Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Ian Abbott 2017-03-08 18:44:30 +00:00 • committed by Greg Kroah-Hartman

parent 6fbd1330e5

commit 7cb1c5c2cd

1 changed files with 1 additions and 6 deletions

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drivers/staging/comedi/drivers/jr3_pci.c

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