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Date: Mon, 13 Jan 2014 11:17:04 +0200 From: Mika Westerberg <mika.westerberg@...ux.intel.com> To: linux-spi@...r.kernel.org Cc: Eric Miao <eric.y.miao@...il.com>, Russell King <linux@....linux.org.uk>, Haojian Zhuang <haojian.zhuang@...il.com>, Mark Brown <broonie@...nel.org>, linux-kernel@...r.kernel.org, Mika Westerberg <mika.westerberg@...ux.intel.com> Subject: [PATCH] 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. Signed-off-by: Mika Westerberg <mika.westerberg@...ux.intel.com> --- drivers/spi/spi-pxa2xx.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/spi/spi-pxa2xx.c b/drivers/spi/spi-pxa2xx.c index 7765b1999537..cbc68848789d 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; } -- 1.8.5.2 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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