| hsi_async(9) - phpMan
HSI_ASYNC(9) High Speed Synchronous Serial HSI_ASYNC(9)
NAME
hsi_async - Submit an HSI transfer to the controller
SYNOPSIS
int hsi_async(struct hsi_client * cl, struct hsi_msg * msg);
ARGUMENTS
cl
HSI client sending the transfer
msg
The HSI transfer passed to controller
DESCRIPTION
The HSI message must have the channel, ttype, complete and destructor fields set
beforehand. If nents > 0 then the client has to initialize also the scatterlists to point
to the buffers to write to or read from.
HSI controllers relay on pre-allocated buffers from their clients and they do not allocate
buffers on their own.
Once the HSI message transfer finishes, the HSI controller calls the complete callback
with the status and actual_len fields of the HSI message updated. The complete callback
can be called before returning from hsi_async.
Returns -errno on failure or 0 on success
COPYRIGHT
Kernel Hackers Manual 4.8. January 2017 HSI_ASYNC(9)
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