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spi: rspi: Use DUMMY_DATA macro instead of hardcoded value 

Make it more obvious that this value is dummy data.

Signed-off-by: Geert Uytterhoeven <geert+renesas@linux-m68k.org>
Signed-off-by: Mark Brown <broonie@linaro.org>
This commit is contained in:
Geert Uytterhoeven 2013-12-24 10:49:33 +01:00 committed by Mark Brown
parent baf588f428
commit 2aae80b27d
1 changed files with 4 additions and 2 deletions
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6
drivers/spi/spi-rspi.c
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@ -149,6 +149,8 @@
#define SPBFCR_TXRST 0x80 /* qspi only */
#define SPBFCR_RXRST 0x40 /* qspi only */
#define DUMMY_DATA 0x00
struct rspi_data {
void __iomem *addr;
u32 max_speed_hz;
@ -541,7 +543,7 @@ static int rspi_receive_pio(struct rspi_data *rspi, struct spi_message *mesg,
return -ETIMEDOUT;
}
/* dummy write for generate clock */
rspi_write16(rspi, 0x00, RSPI_SPDR);
rspi_write16(rspi, DUMMY_DATA, RSPI_SPDR);
if (rspi_wait_for_interrupt(rspi, SPSR_SPRF, SPCR_SPRIE) < 0) {
dev_err(&rspi->master->dev,
@ -586,7 +588,7 @@ static int qspi_receive_pio(struct rspi_data *rspi, struct spi_message *mesg,
return -ETIMEDOUT;
}
/* dummy write for generate clock */
rspi_write8(rspi, 0x00, RSPI_SPDR);
rspi_write8(rspi, DUMMY_DATA, RSPI_SPDR);
if (rspi_wait_for_interrupt(rspi, SPSR_SPRF, SPCR_SPRIE) < 0) {
dev_err(&rspi->master->dev,