spi/pxa2xx: initialize DMA channels to -1 to prevent inadvertent match
authorMika Westerberg <mika.westerberg@linux.intel.com>
Mon, 13 Jan 2014 09:17:04 +0000 (11:17 +0200)
committerMark Brown <broonie@linaro.org>
Mon, 13 Jan 2014 12:39:19 +0000 (12:39 +0000)
commit483c319188c74e82b29a0ed7a7fa7065570f2193
tree6654f08957d355235eff55a8c36afde2745e1e21
parent6ce4eac1f600b34f2f7f58f9cd8f0503d79e42ae
spi/pxa2xx: initialize DMA channels to -1 to prevent inadvertent match

Commit cddb339badb0 (spi/pxa2xx: convert to dma_request_slave_channel_compat())
converted the driver to use ACPI provided DMA helpers but it forgot to
initialize the platform data for the channels to -1. Failing to do so will
result inadvertent match in the filter function because 0 is a valid
channel number.

Prevent this from happening by initializing both platform data channels
correctly to -1.

Fixes: cddb339badb0 (spi/pxa2xx: convert to dma_request_slave_channel_compat())
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
Cc: stable@vger.kernel.org
drivers/spi/spi-pxa2xx.c