evie/android_kernel_oneplus_msm8998
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

mmc: sdhci-msm: update dma_mask for SDHC device

Browse source 
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>
This commit is contained in:
Sahitya Tummala 2013-03-20 19:34:59 +05:30 • committed by Subhash Jadavani
parent cff2042613
commit 8bbdb3514b
1 changed files with 8 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

8
drivers/mmc/host/sdhci-msm.c
View file

@ -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);