[PATCH v2 7/8] spi: spi-s3c64xx: Use local variable for FIFO length

Sylwester Nawrocki
2018-04-17T14:29:53Z

More references to fifo_len are added in subsequent patch.

Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
---
drivers/spi/spi-s3c64xx.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/spi/spi-s3c64xx.c b/drivers/spi/spi-s3c64xx.c
index db33bc9b4147..27cd8c59eabf 100644
--- a/drivers/spi/spi-s3c64xx.c
+++ b/drivers/spi/spi-s3c64xx.c
@@ -634,6 +634,7 @@ static int s3c64xx_spi_transfer_one(struct spi_master *master,
struct spi_transfer *xfer)
{
struct s3c64xx_spi_driver_data *sdd = spi_master_get_devdata(master);
+ const unsigned int fifo_len = (FIFO_LVL_MASK(sdd) >> 1) + 1;
int status;
u32 speed;
u8 bpw;
@@ -655,9 +656,8 @@ static int s3c64xx_spi_transfer_one(struct spi_master *master,

/* Polling method for xfers not bigger than FIFO capacity */
use_dma = 0;
- if (!is_polling(sdd) &&
- (sdd->rx_dma.ch && sdd->tx_dma.ch &&
- (xfer->len > ((FIFO_LVL_MASK(sdd) >> 1) + 1))))
+ if (!is_polling(sdd) && (xfer->len > fifo_len) &&
+ sdd->rx_dma.ch && sdd->tx_dma.ch)
use_dma = 1;

spin_lock_irqsave(&sdd->lock, flags);
--
2.14.2