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author | 2017-11-14 16:54:12 -0800 | |
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committer | 2017-11-14 16:54:12 -0800 | |
commit | e37e0ee0190034a059c9faea8adfb4982fb24ddd (patch) | |
tree | ba6d6da8ae099eb734f4d8d33bf648fe0dfa39e7 /include/linux/device.h | |
parent | Merge tag 'dmaengine-4.15-rc1' of git://git.infradead.org/users/vkoul/slave-dma (diff) | |
parent | dma-mapping: turn dma_cache_sync into a dma_map_ops method (diff) | |
download | linux-e37e0ee0190034a059c9faea8adfb4982fb24ddd.tar.gz linux-e37e0ee0190034a059c9faea8adfb4982fb24ddd.tar.bz2 linux-e37e0ee0190034a059c9faea8adfb4982fb24ddd.zip |
Merge tag 'dma-mapping-4.15' of git://git.infradead.org/users/hch/dma-mapping
Pull dma-mapping updates from Christoph Hellwig:
- turn dma_cache_sync into a dma_map_ops instance and remove
implementation that purely are dead because the architecture doesn't
support noncoherent allocations
- add a flag for busses that need DMA configuration (Robin Murphy)
* tag 'dma-mapping-4.15' of git://git.infradead.org/users/hch/dma-mapping:
dma-mapping: turn dma_cache_sync into a dma_map_ops method
sh: make dma_cache_sync a no-op
xtensa: make dma_cache_sync a no-op
unicore32: make dma_cache_sync a no-op
powerpc: make dma_cache_sync a no-op
mn10300: make dma_cache_sync a no-op
microblaze: make dma_cache_sync a no-op
ia64: make dma_cache_sync a no-op
frv: make dma_cache_sync a no-op
x86: make dma_cache_sync a no-op
floppy: consolidate the dummy fd_cacheflush definition
drivers: flag buses which demand DMA configuration
Diffstat (limited to 'include/linux/device.h')
-rw-r--r-- | include/linux/device.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/linux/device.h b/include/linux/device.h index fb9451599aca..9d32000725da 100644 --- a/include/linux/device.h +++ b/include/linux/device.h @@ -97,6 +97,8 @@ extern void bus_remove_file(struct bus_type *, struct bus_attribute *); * @p: The private data of the driver core, only the driver core can * touch this. * @lock_key: Lock class key for use by the lock validator + * @force_dma: Assume devices on this bus should be set up by dma_configure() + * even if DMA capability is not explicitly described by firmware. * * A bus is a channel between the processor and one or more devices. For the * purposes of the device model, all devices are connected via a bus, even if @@ -135,6 +137,8 @@ struct bus_type { struct subsys_private *p; struct lock_class_key lock_key; + + bool force_dma; }; extern int __must_check bus_register(struct bus_type *bus); |