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Subject[PATCH 0/2] spi: Add support for non-blocking synchronous transfers
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Hi,

During the course of development of an accelerometer driver, we saw the
necessity to execute spi transfers synchronously within an interrupt handler.
When using a workqueue instead, we observed a huge number of overruns with very
high cpu utlization, which is unacceptable.

This series adds a new interface for this and modifies no existing ones.

[PATCH 1/2] - Adds synchronous non-blocking transfer support to spi core
[PATCH 2/2] - Implements this support in spi_bitbang.c


Balaji Rao (2):
spi_bitbang: Add support for non-blocking synchronous transfers
spi: Add support for non-blocking synchronous transfers


drivers/spi/spi_bitbang.c | 227 +++++++++++++++++++++------------------
include/linux/spi/spi.h | 31 +++++
include/linux/spi/spi_bitbang.h | 5 +
3 files changed, 156 insertions(+), 107 deletions(-)

--
Balaji Rao


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