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spi: dw: get TX level without an additional variable

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There is no need to have an additional variable to get a TX level. The patch
refactors this piece of code.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Andy Shevchenko 2015-02-24 13:32:11 +02:00 • committed by Mark Brown
parent 39bc03bfec
commit ea11370fff
1 changed files with 4 additions and 7 deletions
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11
drivers/spi/spi-dw.c
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@ -365,7 +365,7 @@ static void pump_transfers(unsigned long data)
u8 bits = 0; u8 bits = 0;
u8 imask = 0; u8 imask = 0;
u8 cs_change = 0; u8 cs_change = 0;
u16 txint_level = 0; u16 txlevel = 0;
u16 clk_div = 0; u16 clk_div = 0;
u32 speed = 0; u32 speed = 0;
u32 cr0 = 0; u32 cr0 = 0;
@ -461,10 +461,7 @@ static void pump_transfers(unsigned long data)
* we only need set the TXEI IRQ, as TX/RX always happen syncronizely * we only need set the TXEI IRQ, as TX/RX always happen syncronizely
*/ */
if (!dws->dma_mapped && !chip->poll_mode) { if (!dws->dma_mapped && !chip->poll_mode) {
int templen = dws->len / dws->n_bytes; txlevel = min_t(u16, dws->fifo_len / 2, dws->len / dws->n_bytes);
txint_level = dws->fifo_len / 2;
txint_level = (templen > txint_level) ? txint_level : templen;
imask |= SPI_INT_TXEI | SPI_INT_TXOI | imask |= SPI_INT_TXEI | SPI_INT_TXOI |
SPI_INT_RXUI | SPI_INT_RXOI; SPI_INT_RXUI | SPI_INT_RXOI;
@ -490,8 +487,8 @@ static void pump_transfers(unsigned long data)
spi_mask_intr(dws, 0xff); spi_mask_intr(dws, 0xff);
if (imask) if (imask)
spi_umask_intr(dws, imask); spi_umask_intr(dws, imask);
if (txint_level) if (txlevel)
dw_writew(dws, DW_SPI_TXFLTR, txint_level); dw_writew(dws, DW_SPI_TXFLTR, txlevel);
spi_enable_chip(dws, 1); spi_enable_chip(dws, 1);
} }