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Subject[PATCH] spi: spi-bfin5xx: Initialize cr_width in bfin_spi_pump_transfers()
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 <gang.chen.5i5j@gmail.com>
---
drivers/spi/spi-bfin5xx.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/spi/spi-bfin5xx.c b/drivers/spi/spi-bfin5xx.c
index 3707993..a3d65b4 100644
--- a/drivers/spi/spi-bfin5xx.c
+++ b/drivers/spi/spi-bfin5xx.c
@@ -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);
--
1.9.3

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