HSI_ASYNC(9) High Speed Synchronous Serial HSI_ASYNC(9)NAMEhsi_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
COPYRIGHTKernel Hackers Manual 3.11 November 2013 HSI_ASYNC(9)
