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

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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 <[email protected]>
Signed-off-by: Mark Brown <[email protected]>
Cc: [email protected]
This commit is contained in:
Mika Westerberg 2014-01-13 11:17:04 +02:00 • committed by Mark Brown
commit 483c319188
1 changed files with 2 additions and 0 deletions
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2
drivers/spi/spi-pxa2xx.c
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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;
}