From: Subhash Jadavani <subhashj@xxxxxxxxxxxxxx>
If DMA resource is not available then SDCC driver
should atleast work in PIO data transfer mode.
Signed-off-by: Subhash Jadavani <subhashj@xxxxxxxxxxxxxx>
Signed-off-by: Sahitya Tummala <stummala@xxxxxxxxxxxxxx>
---
drivers/mmc/host/msm_sdcc.c | 15 ++++++++++-----
1 files changed, 10 insertions(+), 5 deletions(-)
diff --git a/drivers/mmc/host/msm_sdcc.c b/drivers/mmc/host/msm_sdcc.c
index 36fded7..a7d7b5e 100644
--- a/drivers/mmc/host/msm_sdcc.c
+++ b/drivers/mmc/host/msm_sdcc.c
@@ -1233,9 +1233,13 @@ msmsdcc_probe(struct platform_device *pdev)
/*
* Setup DMA
*/
- ret = msmsdcc_init_dma(host);
- if (ret)
- goto ioremap_free;
+ 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");
@@ -1379,8 +1383,9 @@ msmsdcc_probe(struct platform_device *pdev)
pclk_put:
clk_put(host->pclk);
dma_free:
- dma_free_coherent(NULL, sizeof(struct msmsdcc_nc_dmadata),
- host->dma.nc, host->dma.nc_busaddr);
+ if (host->dmares)
+ dma_free_coherent(NULL, sizeof(struct msmsdcc_nc_dmadata),
+ host->dma.nc, host->dma.nc_busaddr);
ioremap_free:
tasklet_kill(&host->dma_tlet);
iounmap(host->base);
--
1.7.1
--
Sent by a consultant of the Qualcomm Innovation Center, Inc.
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum.
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