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| author | Bjoern A. Zeeb <bz@FreeBSD.org> | 2022-09-23 22:13:19 +0000 |
|---|---|---|
| committer | Bjoern A. Zeeb <bz@FreeBSD.org> | 2022-09-26 19:42:02 +0000 |
| commit | 0b9bc97342f98a911985ace5527aef97863dfd23 (patch) | |
| tree | 7465955f2ba0ce18c0e054d822926e7541267166 /sys/compat | |
| parent | f486b352470edc82142766c2f3da2b8220774b7f (diff) | |
| download | src-0b9bc97342f98a911985ace5527aef97863dfd23.tar.gz src-0b9bc97342f98a911985ace5527aef97863dfd23.zip | |
LinuxKPI: add DMA_MAPPING_ERROR
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
Diffstat (limited to 'sys/compat')
| -rw-r--r-- | sys/compat/linuxkpi/common/include/linux/dma-mapping.h | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/sys/compat/linuxkpi/common/include/linux/dma-mapping.h b/sys/compat/linuxkpi/common/include/linux/dma-mapping.h index 8401006fbf5f..d3d25fcce857 100644 --- a/sys/compat/linuxkpi/common/include/linux/dma-mapping.h +++ b/sys/compat/linuxkpi/common/include/linux/dma-mapping.h @@ -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, |