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authorRicardo Ribalda Delgado <ricardo.ribalda@gmail.com>2015-01-28 15:23:43 +0300
committerMark Brown <broonie@kernel.org>2015-01-28 22:42:42 +0300
commit5b74d7a3b888fd3db6dce77eb11b3d55b64f6833 (patch)
tree5ecaf023a3b8acb1210224ac663c2275e29e866d /drivers/spi
parenta87cbca0acef0b1f57e4b216f1965468ee521cd3 (diff)
downloadlinux-5b74d7a3b888fd3db6dce77eb11b3d55b64f6833.tar.xz
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>
Diffstat (limited to 'drivers/spi')
-rw-r--r--drivers/spi/spi-xilinx.c1
1 files changed, 0 insertions, 1 deletions
diff --git a/drivers/spi/spi-xilinx.c b/drivers/spi/spi-xilinx.c
index a0f7c9d4a349..12b311ed9bfa 100644
--- a/drivers/spi/spi-xilinx.c
+++ b/drivers/spi/spi-xilinx.c
@@ -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);