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i2c: at91: fix code checker warnings

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buf_len is a size_t, so unsigned, but was tested with '<= 0'.

Reported-by: Wolfram Sang <wsa@the-dreams.de>
Signed-off-by: Cyrille Pitchen <cyrille.pitchen@atmel.com>
Acked-by: Ludovic Desroches <ludovic.desroches@atmel.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
This commit is contained in:
Cyrille Pitchen 2015-06-11 11:16:32 +02:00 committed by Wolfram Sang
parent d845340394
commit f30dc5208c
1 changed files with 3 additions and 3 deletions
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6
drivers/i2c/busses/i2c-at91.c
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@ -232,7 +232,7 @@ static void at91_twi_dma_cleanup(struct at91_twi_dev *dev)
static void at91_twi_write_next_byte(struct at91_twi_dev *dev)
{
if (dev->buf_len <= 0)
if (!dev->buf_len)
return;
/* 8bit write works with and without FIFO */
@ -275,7 +275,7 @@ static void at91_twi_write_data_dma(struct at91_twi_dev *dev)
struct dma_chan *chan_tx = dma->chan_tx;
unsigned int sg_len = 1;
if (dev->buf_len <= 0)
if (!dev->buf_len)
return;
dma->direction = DMA_TO_DEVICE;
@ -347,7 +347,7 @@ static void at91_twi_write_data_dma(struct at91_twi_dev *dev)
static void at91_twi_read_next_byte(struct at91_twi_dev *dev)
{
if (dev->buf_len <= 0)
if (!dev->buf_len)
return;
/* 8bit read works with and without FIFO */