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Commit 190657c9 authored by Subhash Jadavani's avatar Subhash Jadavani Committed by Chris Ball
Browse files

mmc: msm_sdcc: Handle dma resource not present case 



If DMA resource is not available then SDCC driver
should atleast work in PIO data transfer mode.

Signed-off-by: default avatarSubhash Jadavani <subhashj@codeaurora.org>
Signed-off-by: default avatarSahitya Tummala <stummala@codeaurora.org>
Signed-off-by: default avatarDavid Brown <davidb@codeaurora.org>
Signed-off-by: default avatarChris Ball <cjb@laptop.org>
parent 19207f05

drivers/mmc/host/msm_sdcc.c

+10 −5
Original line number Diff line number Diff line
@@ -1242,9 +1242,13 @@ msmsdcc_probe(struct platform_device *pdev) 
	/*

	 * Setup DMA

	 */

	if (host->dmares) {

		ret = msmsdcc_init_dma(host);

		if (ret)

			goto ioremap_free;

	} else {

		host->dma.channel = -1;

	}



	/* Get our clocks */

	host->pclk = clk_get(&pdev->dev, "sdc_pclk");
@@ -1388,6 +1392,7 @@ msmsdcc_probe(struct platform_device *pdev) 
 pclk_put:

	clk_put(host->pclk);

dma_free:

	if (host->dmares)

		dma_free_coherent(NULL, sizeof(struct msmsdcc_nc_dmadata),

					host->dma.nc, host->dma.nc_busaddr);

ioremap_free: