summaryrefslogtreecommitdiffstats
path: root/drivers/of
diff options
context:
space:
mode:
authorDavid S. Miller <davem@davemloft.net>2017-08-21 17:06:42 -0700
committerDavid S. Miller <davem@davemloft.net>2017-08-21 17:06:42 -0700
commite2a7c34fb2856fd5306e307e170e3dde358d0dce (patch)
treeafeb300b04186b1a1f649b2cd8a401a75878297c /drivers/of
parent7d3f0cd43feea1636dd7746f22fe8249b34d1b79 (diff)
parent6470812e22261d2342ef1597be62e63a0423d691 (diff)
downloadlinux-e2a7c34fb2856fd5306e307e170e3dde358d0dce.tar.bz2
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Diffstat (limited to 'drivers/of')
-rw-r--r--drivers/of/device.c8
1 files changed, 4 insertions, 4 deletions
diff --git a/drivers/of/device.c b/drivers/of/device.c
index 28c38c756f92..e0a28ea341fe 100644
--- a/drivers/of/device.c
+++ b/drivers/of/device.c
@@ -89,6 +89,7 @@ int of_dma_configure(struct device *dev, struct device_node *np)
bool coherent;
unsigned long offset;
const struct iommu_ops *iommu;
+ u64 mask;
/*
* Set default coherent_dma_mask to 32 bit. Drivers are expected to
@@ -134,10 +135,9 @@ int of_dma_configure(struct device *dev, struct device_node *np)
* Limit coherent and dma mask based on size and default mask
* set by the driver.
*/
- dev->coherent_dma_mask = min(dev->coherent_dma_mask,
- DMA_BIT_MASK(ilog2(dma_addr + size)));
- *dev->dma_mask = min((*dev->dma_mask),
- DMA_BIT_MASK(ilog2(dma_addr + size)));
+ mask = DMA_BIT_MASK(ilog2(dma_addr + size - 1) + 1);
+ dev->coherent_dma_mask &= mask;
+ *dev->dma_mask &= mask;
coherent = of_dma_is_coherent(np);
dev_dbg(dev, "device is%sdma coherent\n",