Commit e3e020f8 authored Feb 05, 2013 by Manjunathappa, Prakash Committed by Chris Ball Mar 22, 2013

mmc: davinci_mmc: allow driver to work without DMA resource



Do not return probe failure with missing DMA resources, allow driver
to work in PIO mode.  Tested on da850-evm by mounting partition
followed by file creation and deletion.

Signed-off-by: Manjunathappa, Prakash <prakash.pm@ti.com>
Tested-by: Sekhar Nori <nsekhar@ti.com>
Signed-off-by: Chris Ball <cjb@laptop.org>

parent c69042a5

drivers/mmc/host/davinci_mmc.c

+6 −4

Original line number	Diff line number	Diff line
		@@ -1190,12 +1190,14 @@ static int __init davinci_mmcsd_probe(struct platform_device *pdev)

		r = platform_get_resource(pdev, IORESOURCE_DMA, 0);
		if (!r)
		goto out;
		dev_warn(&pdev->dev, "RX DMA resource not specified\n");
		else
		host->rxdma = r->start;

		r = platform_get_resource(pdev, IORESOURCE_DMA, 1);
		if (!r)
		goto out;
		dev_warn(&pdev->dev, "TX DMA resource not specified\n");
		else
		host->txdma = r->start;

		host->mem_res = mem;