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LinuxKPI: add DMA_MAPPING_ERROR

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While we deal with 0 returned, some drivers directly use and check for
DMA_MAPPING_ERROR.  Add the case and check for both in dma_mapping_error().

MFC after:	1 week
Reviewed by:	hselasky
Differential Revision: https://reviews.freebsd.org/D36686
This commit is contained in:
Bjoern A. Zeeb 2022-09-23 22:13:19 +00:00
parent f486b35247
commit 0b9bc97342
1 changed files with 5 additions and 1 deletions
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6
sys/compat/linuxkpi/common/include/linux/dma-mapping.h
View file

@ -288,11 +288,15 @@ dma_sync_single_range_for_device(struct device *dev, dma_addr_t dma_handle,
{
}
#define DMA_MAPPING_ERROR (~(dma_addr_t)0)
static inline int
dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
{
return (dma_addr == 0);
if (dma_addr == 0 || dma_addr == DMA_MAPPING_ERROR)
return (-ENOMEM);
return (0);
}
static inline unsigned int dma_set_max_seg_size(struct device *dev,