Heikki Krogerus d4089a3328 serial: 8250_dma: check the result of TX buffer mapping
Using dma_mapping_error() to make sure the mapping did not
fail.

Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-05-28 13:07:27 -07:00
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