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authorSuthikulpanit, Suravee <Suravee.Suthikulpanit@amd.com>2015-10-28 15:50:50 -0700
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2015-11-07 01:29:22 +0100
commit1831eff876bd0bb8d64e9965a7ff47486c9a3ecd (patch)
tree97a652863ace4050ce511b981211c3baae5e9fab /drivers/crypto/ccp
parente5e558644bbb23cad03c586703331b8bcd9e0e6c (diff)
downloadlinux-1831eff876bd0bb8d64e9965a7ff47486c9a3ecd.tar.gz
device property: ACPI: Make use of the new DMA Attribute APIs
Now that we have the new DMA attribute APIs, we can replace the older acpi_check_dma() and device_dma_is_coherent(). Signed-off-by: Suravee Suthikulpanit <Suravee.Suthikulpanit@amd.com> Acked-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Hanjun Guo <hanjun.guo@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/crypto/ccp')
-rw-r--r--drivers/crypto/ccp/ccp-platform.c15
1 files changed, 11 insertions, 4 deletions
diff --git a/drivers/crypto/ccp/ccp-platform.c b/drivers/crypto/ccp/ccp-platform.c
index bb241c3ab6b9..844118cb31a3 100644
--- a/drivers/crypto/ccp/ccp-platform.c
+++ b/drivers/crypto/ccp/ccp-platform.c
@@ -96,6 +96,7 @@ static int ccp_platform_probe(struct platform_device *pdev)
struct ccp_platform *ccp_platform;
struct device *dev = &pdev->dev;
struct acpi_device *adev = ACPI_COMPANION(dev);
+ enum dev_dma_attr attr;
struct resource *ior;
int ret;
@@ -122,18 +123,24 @@ static int ccp_platform_probe(struct platform_device *pdev)
}
ccp->io_regs = ccp->io_map;
- ret = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(48));
- if (ret) {
- dev_err(dev, "dma_set_mask_and_coherent failed (%d)\n", ret);
+ attr = device_get_dma_attr(dev);
+ if (attr == DEV_DMA_NOT_SUPPORTED) {
+ dev_err(dev, "DMA is not supported");
goto e_err;
}
- ccp_platform->coherent = device_dma_is_coherent(ccp->dev);
+ ccp_platform->coherent = (attr == DEV_DMA_COHERENT);
if (ccp_platform->coherent)
ccp->axcache = CACHE_WB_NO_ALLOC;
else
ccp->axcache = CACHE_NONE;
+ ret = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(48));
+ if (ret) {
+ dev_err(dev, "dma_set_mask_and_coherent failed (%d)\n", ret);
+ goto e_err;
+ }
+
dev_set_drvdata(dev, ccp);
ret = ccp_init(ccp);