XPRT_COMPLETE_RQST(9) Linux Networking XPRT_COMPLETE_RQST(9)NAME
xprt_complete_rqst - called when reply processing is complete
void xprt_complete_rqst(struct rpc_task * task, int copied);
RPC request that recently completed
actual number of bytes received from the transport
Caller holds transport lock.
COPYRIGHT Kernel Hackers Manual 3.10 June 2014 XPRT_COMPLETE_RQST(9)
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SPI_ASYNC_LOCKED(9) Serial Peripheral Interface (S SPI_ASYNC_LOCKED(9)NAME
spi_async_locked - version of spi_async with exclusive bus usage
int spi_async_locked(struct spi_device * spi, struct spi_message * message);
device with which data will be exchanged
describes the data transfers, including completion callback
any (irqs may be blocked, etc)
This call may be used in_irq and other contexts which can't sleep, as well as from task contexts which can sleep.
The completion callback is invoked in a context which can't sleep. Before that invocation, the value of message->status is undefined. When
the callback is issued, message->status holds either zero (to indicate complete success) or a negative error code. After that callback
returns, the driver which issued the transfer request may deallocate the associated memory; it's no longer in use by any SPI core or
controller driver code.
Note that although all messages to a spi_device are handled in FIFO order, messages may go to different devices in other orders. Some
device might be higher priority, or have various "hard" access time requirements, for example.
On detection of any fault during the transfer, processing of the entire message is aborted, and the device is deselected. Until returning
from the associated message completion callback, no other spi_message queued to that device will be processed. (This rule applies equally
to all the synchronous transfer calls, which are wrappers around this core asynchronous primitive.)
COPYRIGHT Kernel Hackers Manual 3.10 June 2014 SPI_ASYNC_LOCKED(9)
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