Commit 5b74d7a3 authored Jan 28, 2015 by Ricardo Ribalda Delgado Committed by Mark Brown Jan 28, 2015

spi/xilinx: Use cached value of register



The control register has not changed since the previous access.
Therefore we can use the cached value and safe one bus access.

Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

parent a87cbca0

drivers/spi/spi-xilinx.c

+0 −1

Original line number	Diff line number	Diff line
		@@ -271,7 +271,6 @@ static int xilinx_spi_txrx_bufs(struct spi_device spi, struct spi_transfer t)
		* transmitter while the Isr refills the transmit register/FIFO,
		* or make sure it is stopped if we're done.
		*/
		cr = xspi->read_fn(xspi->regs + XSPI_CR_OFFSET);
		xspi->write_fn(cr \| XSPI_CR_TRANS_INHIBIT,
		xspi->regs + XSPI_CR_OFFSET);