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spi: spi-sun6i: sun6i_spi_transfer_one(): remove not needed masking of transfer length 

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>
Acked-by: Maxime Ripard <mripard@kernel.org>
Link: https://lore.kernel.org/r/20200706143443.9855-5-mkl@pengutronix.de
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Marc Kleine-Budde 2020-07-06 16:34:37 +02:00 committed by Mark Brown
parent b6d5527389
commit 2130be57d5
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GPG Key ID: 24D68B725D5487D0
1 changed files with 3 additions and 7 deletions
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10
drivers/spi/spi-sun6i.c
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@ -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);