spi/pxa2xx: initialize DMA channels to -1 to prevent inadvertent match

Commit cddb339bad (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: cddb339bad (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
This commit is contained in:
Mika Westerberg 2014-01-13 11:17:04 +02:00 коммит произвёл Mark Brown
Родитель 6ce4eac1f6
Коммит 483c319188
1 изменённых файлов: 2 добавлений и 0 удалений

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@ -1066,6 +1066,8 @@ pxa2xx_spi_acpi_get_pdata(struct platform_device *pdev)
pdata->num_chipselect = 1;
pdata->enable_dma = true;
pdata->tx_chan_id = -1;
pdata->rx_chan_id = -1;
return pdata;
}