typo fixes
Most of these fixes were already submitted for old kernel versions, and were approved, but for some reason they never made it into the releases. Because this is a consolidation of a couple old missed patches, it touches both Kconfigs and documentation texts. Signed-off-by: Matt LaPlante <kernel1@cyberdogtech.com> Acked-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Adrian Bunk <bunk@kernel.org>
This commit is contained in:
committed by
Adrian Bunk
parent
0f035b8e84
commit
01dd2fbf0d
@@ -5,7 +5,7 @@ Introduction
|
||||
------------
|
||||
|
||||
The kernel provides an interface to manage DMA transfers
|
||||
using the DMA channels in the cpu, so that the central
|
||||
using the DMA channels in the CPU, so that the central
|
||||
duty of managing channel mappings, and programming the
|
||||
channel generators is in one place.
|
||||
|
||||
@@ -17,24 +17,24 @@ DMA Channel Ordering
|
||||
channels to all sources, which means that some devices
|
||||
have a restricted number of channels that can be used.
|
||||
|
||||
To allow flexibilty for each cpu type and board, the
|
||||
dma code can be given an dma ordering structure which
|
||||
To allow flexibility for each CPU type and board, the
|
||||
DMA code can be given a DMA ordering structure which
|
||||
allows the order of channel search to be specified, as
|
||||
well as allowing the prohibition of certain claims.
|
||||
|
||||
struct s3c24xx_dma_order has a list of channels, and
|
||||
each channel within has a slot for a list of dma
|
||||
channel numbers. The slots are searched in order, for
|
||||
the presence of a dma channel number with DMA_CH_VALID
|
||||
orred in.
|
||||
each channel within has a slot for a list of DMA
|
||||
channel numbers. The slots are searched in order for
|
||||
the presence of a DMA channel number with DMA_CH_VALID
|
||||
or-ed in.
|
||||
|
||||
If the order has the flag DMA_CH_NEVER set, then after
|
||||
checking the channel list, the system will return no
|
||||
found channel, thus denying the request.
|
||||
|
||||
A board support file can call s3c24xx_dma_order_set()
|
||||
to register an complete ordering set. The routine will
|
||||
copy the data, so the original can be discared with
|
||||
to register a complete ordering set. The routine will
|
||||
copy the data, so the original can be discarded with
|
||||
__initdata.
|
||||
|
||||
|
||||
|
Reference in New Issue
Block a user