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spi: spi-fsl-dspi: Remove unused chip->void_write_data

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This variable has been present since the initial submission of the
driver, and held, for some reason, the value of zero, to be sent on the
wire in the case there wasn't any TX buffer for the current transfer.

Since quite a while now, however, it isn't doing anything at all.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Link: https://lore.kernel.org/r/20200304220044.11193-3-olteanv@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Vladimir Oltean 2020-03-05 00:00:34 +02:00 committed by Mark Brown
parent 53fadb4d90
commit 6d6af5796e
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
1 changed files with 0 additions and 6 deletions
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6
drivers/spi/spi-fsl-dspi.c
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@ -110,7 +110,6 @@
struct chip_data {
u32 ctar_val;
u16 void_write_data;
};
enum dspi_trans_mode {
@ -235,7 +234,6 @@ struct fsl_dspi {
const void *tx;
void *rx;
void *rx_end;
u16 void_write_data;
u16 tx_cmd;
u8 bits_per_word;
u8 bytes_per_word;
@ -795,8 +793,6 @@ static int dspi_transfer_one_message(struct spi_controller *ctlr,
dspi->tx_cmd |= SPI_PUSHR_CMD_CONT;
}
dspi->void_write_data = dspi->cur_chip->void_write_data;
dspi->tx = transfer->tx_buf;
dspi->rx = transfer->rx_buf;
dspi->rx_end = dspi->rx + transfer->len;
@ -897,8 +893,6 @@ static int dspi_setup(struct spi_device *spi)
sck_cs_delay = pdata->sck_cs_delay;
}
chip->void_write_data = 0;
clkrate = clk_get_rate(dspi->clk);
hz_to_spi_baud(&pbr, &br, spi->max_speed_hz, clkrate);