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spi: spi-bfin5xx: Initialize cr_width in bfin_spi_pump_transfers()

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cr_width may be not initialized before using by cr, the related warning
(with defconfig under blackfin by gcc5):

    CC      drivers/spi/spi-bfin5xx.o
  drivers/spi/spi-bfin5xx.c: In function 'bfin_spi_pump_transfers':
  drivers/spi/spi-bfin5xx.c:655:5: warning: 'cr_width' may be used uninitialized in this function [-Wmaybe-uninitialized]
    cr |= cr_width;
       ^

Signed-off-by: Chen Gang <[email protected]>
Signed-off-by: Mark Brown <[email protected]>
This commit is contained in:
Chen Gang 2015-04-02 03:03:33 +08:00 • committed by Mark Brown
commit 057f6061a1
1 changed files with 1 additions and 2 deletions
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3
drivers/spi/spi-bfin5xx.c
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@ -559,7 +559,7 @@ static void bfin_spi_pump_transfers(unsigned long data)
struct spi_transfer *previous = NULL;
struct bfin_spi_slave_data *chip = NULL;
unsigned int bits_per_word;
u16 cr, cr_width, dma_width, dma_config;
u16 cr, cr_width = 0, dma_width, dma_config;
u32 tranf_success = 1;
u8 full_duplex = 0;
@ -648,7 +648,6 @@ static void bfin_spi_pump_transfers(unsigned long data)
} else if (bits_per_word == 8) {
drv_data->n_bytes = bits_per_word/8;
drv_data->len = transfer->len;
cr_width = 0;
drv_data->ops = &bfin_bfin_spi_transfer_ops_u8;
}
cr = bfin_read(&drv_data->regs->ctl) & ~(BIT_CTL_TIMOD | BIT_CTL_WORDSIZE);