limit the device dma_mask to the min of default dma_mask and
mask calculate from the dma-range size.
Cc: Joerg Roedel <j...@8bytes.org>
Cc: Grant Likely <grant.lik...@linaro.org>
Cc: Rob Herring <robh...@kernel.org>
Cc: Bjorn Helgaas <bhelg...@google.com>
Cc: Will Deacon <will.dea...@arm.com>
Cc: Russell King <li...@arm.linux.org.uk>
Cc: Arnd Bergmann <a...@arndb.de>
Cc: Suravee Suthikulpanit <suravee.suthikulpa...@amd.com>
Signed-off-by: Murali Karicheri <m-kariche...@ti.com>
---
drivers/of/device.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/of/device.c b/drivers/of/device.c
index 17504f4..bcb8a35 100644
--- a/drivers/of/device.c
+++ b/drivers/of/device.c
@@ -128,6 +128,9 @@ void of_dma_configure(struct device *dev, struct
device_node *np)
dev_dbg(dev, "device is%sbehind an iommu\n",
iommu ? " " : " not ");
+ /* limit dma_mask to the lower of the two values */
+ *dev->dma_mask = min((*dev->dma_mask), (dma_addr + size - 1));
+
arch_setup_dma_ops(dev, dma_addr, size, iommu, coherent);
}
EXPORT_SYMBOL_GPL(of_dma_configure);
--
1.7.9.5
--
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