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authorMika Westerberg <mika.westerberg@linux.intel.com>2014-01-13 11:17:04 +0200
committerMark Brown <broonie@linaro.org>2014-01-13 12:39:19 +0000
commit483c319188c74e82b29a0ed7a7fa7065570f2193 (patch)
tree6654f08957d355235eff55a8c36afde2745e1e21 /drivers/spi/spi-pxa2xx.c
parent6ce4eac1f600b34f2f7f58f9cd8f0503d79e42ae (diff)
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
Diffstat (limited to 'drivers/spi/spi-pxa2xx.c')
-rw-r--r--drivers/spi/spi-pxa2xx.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/spi/spi-pxa2xx.c b/drivers/spi/spi-pxa2xx.c
index cb0e1f1137ad..91815fa2d2fe 100644
--- a/drivers/spi/spi-pxa2xx.c
+++ b/drivers/spi/spi-pxa2xx.c
@@ -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;
}