[4/9] spi: spi-sun6i: sun6i_spi_transfer_one(): remove not needed masking of transfer length
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Message ID 20200706071801.558394-5-mkl@pengutronix.de
State New
Headers show
Series
  • spi: spi-sun6i: One fix and some improvements
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Commit Message

Marc Kleine-Budde July 6, 2020, 7:17 a.m. UTC
In sun6i_spi_transfer_one() the driver ensures that the length of the transfer
is smaller or equal to SUN6I_MAX_XFER_SIZE. This means the masking of the
length to SUN6I_MAX_XFER_SIZE can be skipped when writing the transfer length
into the registers.

This patch removes the useless masking of the transfer length to
SUN6I_MAX_XFER_SIZE.

Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
---
 drivers/spi/spi-sun6i.c | 10 +++-------
 1 file changed, 3 insertions(+), 7 deletions(-)

Patch
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diff --git a/drivers/spi/spi-sun6i.c b/drivers/spi/spi-sun6i.c
index 955be8921c45..882492774986 100644
--- a/drivers/spi/spi-sun6i.c
+++ b/drivers/spi/spi-sun6i.c
@@ -73,13 +73,10 @@ 
 #define SUN6I_MAX_XFER_SIZE		0xffffff
 
 #define SUN6I_BURST_CNT_REG		0x30
-#define SUN6I_BURST_CNT(cnt)			((cnt) & SUN6I_MAX_XFER_SIZE)
 
 #define SUN6I_XMIT_CNT_REG		0x34
-#define SUN6I_XMIT_CNT(cnt)			((cnt) & SUN6I_MAX_XFER_SIZE)
 
 #define SUN6I_BURST_CTL_CNT_REG		0x38
-#define SUN6I_BURST_CTL_CNT_STC(cnt)		((cnt) & SUN6I_MAX_XFER_SIZE)
 
 #define SUN6I_TXDATA_REG		0x200
 #define SUN6I_RXDATA_REG		0x300
@@ -305,10 +302,9 @@  static int sun6i_spi_transfer_one(struct spi_master *master,
 		tx_len = tfr->len;
 
 	/* Setup the counters */
-	sun6i_spi_write(sspi, SUN6I_BURST_CNT_REG, SUN6I_BURST_CNT(tfr->len));
-	sun6i_spi_write(sspi, SUN6I_XMIT_CNT_REG, SUN6I_XMIT_CNT(tx_len));
-	sun6i_spi_write(sspi, SUN6I_BURST_CTL_CNT_REG,
-			SUN6I_BURST_CTL_CNT_STC(tx_len));
+	sun6i_spi_write(sspi, SUN6I_BURST_CNT_REG, tfr->len);
+	sun6i_spi_write(sspi, SUN6I_XMIT_CNT_REG, tx_len);
+	sun6i_spi_write(sspi, SUN6I_BURST_CTL_CNT_REG, tx_len);
 
 	/* Fill the TX FIFO */
 	sun6i_spi_fill_fifo(sspi, sspi->fifo_depth);