staging: fsl-mc: don't use raw device io functions

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As raw device io functions are not portable and don't handle byte-order
(triggering suspicion that endianness isn't handled well) switch to
using the standard api.
Since MC expects LE byte-order and the upper layers already take care
of that, we need to trick the device io api by doing a LE -> CPU
conversion just before calling it. This way, the CPU -> LE conversion
done in the api puts the data back in the right byte-order. Obviously,
for reads the extra step is mirrored: there's a CPU -> LE conversion
following the API call.

Signed-off-by: Laurentiu Tudor <laurentiu.tudor@nxp.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Laurentiu Tudor 2017-07-19 14:42:30 +03:00 • committed by Greg Kroah-Hartman

parent f1027a8cb8

commit b064d0e6e4

1 changed files with 15 additions and 6 deletions

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drivers/staging/fsl-mc/bus/mc-sys.c

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