diff options
| author | Sahitya Tummala <stummala@codeaurora.org> | 2013-03-20 19:34:59 +0530 |
|---|---|---|
| committer | Subhash Jadavani <subhashj@codeaurora.org> | 2016-05-27 10:28:30 -0700 |
| commit | 8bbdb3514b5416b7592bbdf746f8def34309bf77 (patch) | |
| tree | 66ac14383856882e84664bb8413a6baa61280911 /drivers/mmc | |
| parent | cff2042613214c2406de6ff81a6d937991e6f4fc (diff) | |
mmc: sdhci-msm: update dma_mask for SDHC device
Set the dma_mask to 0xffffffff to indicate full 32-bit
address space and thus avoiding unnecessary buffers bouncing
from high to low memory.
Change-Id: Idaffe14d4e54a27b15e5a5d82dad41d843714d57
Signed-off-by: Sahitya Tummala <stummala@codeaurora.org>
Diffstat (limited to 'drivers/mmc')
| -rw-r--r-- | drivers/mmc/host/sdhci-msm.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/mmc/host/sdhci-msm.c b/drivers/mmc/host/sdhci-msm.c index feddbaf8f370..2709904fbcde 100644 --- a/drivers/mmc/host/sdhci-msm.c +++ b/drivers/mmc/host/sdhci-msm.c @@ -33,6 +33,7 @@ #include <linux/slab.h> #include <linux/mmc/mmc.h> #include <linux/mmc/slot-gpio.h> +#include <linux/dma-mapping.h> #include <mach/gpio.h> #include <mach/msm_bus.h> @@ -2035,6 +2036,13 @@ static int sdhci_msm_probe(struct platform_device *pdev) } } + if (dma_supported(mmc_dev(host->mmc), DMA_BIT_MASK(32))) { + host->dma_mask = DMA_BIT_MASK(32); + mmc_dev(host->mmc)->dma_mask = &host->dma_mask; + } else { + dev_err(&pdev->dev, "%s: Failed to set dma mask\n", __func__); + } + ret = sdhci_add_host(host); if (ret) { dev_err(&pdev->dev, "Add host failed (%d)\n", ret); |