spi: cadence: revert "Add SPI transfer delays"

commit 7a733e060bd20edb63b1f27f0b29cf9b184e0e8b upstream.

The commit 855a40cd8ccc ("spi: cadence: Add SPI transfer delays") adds a
delay after each transfer into the driver's transfer_one(). However,
the delay is already done in SPI core. So this commit unnecessarily
doubles the delay amount. Revert this commit.

Signed-off-by: Nam Cao <namcao@linutronix.de>
Link: https://lore.kernel.org/r/20231206145233.74982-1-namcao@linutronix.de
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/spi/spi-cadence.c b/drivers/spi/spi-cadence.c
index 12c940b..bd96d8b 100644 (file)
--- a/drivers/spi/spi-cadence.c
+++ b/drivers/spi/spi-cadence.c
@@ -451,7 +451,6 @@ static int cdns_transfer_one(struct spi_controller *ctlr,
                udelay(10);
 
        cdns_spi_process_fifo(xspi, xspi->tx_fifo_depth, 0);
-       spi_transfer_delay_exec(transfer);
 
        cdns_spi_write(xspi, CDNS_SPI_IER, CDNS_SPI_IXR_DEFAULT);
        return transfer->len;