Author: hselasky
Date: Wed Nov 8 08:37:05 2017
New Revision: 325533
URL: https://svnweb.freebsd.org/changeset/base/325533
Log:
Make the dma_alloc_coherent() function in the LinuxKPI NULL safe with regard
to the "dev" argument.
Submitted by: Krishnamraju Eraparaju @ Chelsio
Sponsored by: Chelsio Communications
MFC after: 1 week
Modified:
head/sys/compat/linuxkpi/common/include/linux/dma-mapping.h
Modified: head/sys/compat/linuxkpi/common/include/linux/dma-mapping.h
==============================================================================
--- head/sys/compat/linuxkpi/common/include/linux/dma-mapping.h Wed Nov 8
08:21:17 2017 (r325532)
+++ head/sys/compat/linuxkpi/common/include/linux/dma-mapping.h Wed Nov 8
08:37:05 2017 (r325533)
@@ -127,7 +127,7 @@ dma_alloc_coherent(struct device *dev, size_t size, dm
size_t align;
void *mem;
- if (dev->dma_mask)
+ if (dev != NULL && dev->dma_mask)
high = *dev->dma_mask;
else if (flag & GFP_DMA32)
high = BUS_SPACE_MAXADDR_32BIT;
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