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spi: davinci: remove unnecessary 'count' variable in driver private data

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The variable count in DaVinci SPI driver's private data is
largely unused and its minor use can easily be eliminated.

Remove the variable.

Signed-off-by: Brian Niebuhr <bniebuhr@efjohnson.com>
Tested-By: Michael Williamson <michael.williamson@criticallink.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
This commit is contained in:
Brian Niebuhr 2010-08-20 15:28:23 +05:30 committed by Sekhar Nori
parent fab89ea330
commit f2bf4e8493
1 changed files with 3 additions and 7 deletions
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10
drivers/spi/davinci_spi.c
View file

@ -142,7 +142,6 @@ struct davinci_spi {
const void *tx;
void *rx;
u8 *tmp_buf;
int count;
struct davinci_spi_dma *dma_channels;
struct davinci_spi_platform_data *pdata;
@ -630,8 +629,6 @@ static int davinci_spi_bufs_pio(struct spi_device *spi, struct spi_transfer *t)
/* convert len to words based on bits_per_word */
conv = davinci_spi->bytes_per_word[spi->chip_select];
davinci_spi->count = t->len / conv;
data1_reg_val = ioread32(davinci_spi->base + SPIDAT1);
INIT_COMPLETION(davinci_spi->done);
@ -643,7 +640,7 @@ static int davinci_spi_bufs_pio(struct spi_device *spi, struct spi_transfer *t)
/* Enable SPI */
set_io_bits(davinci_spi->base + SPIGCR1, SPIGCR1_SPIENA_MASK);
count = davinci_spi->count;
count = t->len / conv;
/* Determine the command to execute READ or WRITE */
if (t->tx_buf) {
@ -699,7 +696,7 @@ static int davinci_spi_bufs_pio(struct spi_device *spi, struct spi_transfer *t)
} else { /* Receive in Interrupt mode */
int i;
for (i = 0; i < davinci_spi->count; i++) {
for (i = 0; i < count; i++) {
set_io_bits(davinci_spi->base + SPIINT,
SPIINT_BITERR_INTR
| SPIINT_OVRRUN_INTR
@ -754,7 +751,6 @@ static int davinci_spi_bufs_dma(struct spi_device *spi, struct spi_transfer *t)
/* convert len to words based on bits_per_word */
data_type = davinci_spi->bytes_per_word[spi->chip_select];
davinci_spi->count = t->len / data_type;
data1_reg_val = ioread32(davinci_spi->base + SPIDAT1);
@ -767,7 +763,7 @@ static int davinci_spi_bufs_dma(struct spi_device *spi, struct spi_transfer *t)
if (ret)
return ret;
count = davinci_spi->count; /* the number of elements */
count = t->len / data_type; /* the number of elements */
/* disable all interrupts for dma transfers */
clear_io_bits(davinci_spi->base + SPIINT, SPIINT_MASKALL);