i2c: at91: fix code checker warnings
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>
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@ -232,7 +232,7 @@ static void at91_twi_dma_cleanup(struct at91_twi_dev *dev)
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static void at91_twi_write_next_byte(struct at91_twi_dev *dev)
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{
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if (dev->buf_len <= 0)
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if (!dev->buf_len)
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return;
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/* 8bit write works with and without FIFO */
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@ -275,7 +275,7 @@ static void at91_twi_write_data_dma(struct at91_twi_dev *dev)
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struct dma_chan *chan_tx = dma->chan_tx;
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unsigned int sg_len = 1;
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if (dev->buf_len <= 0)
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if (!dev->buf_len)
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return;
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dma->direction = DMA_TO_DEVICE;
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@ -347,7 +347,7 @@ error:
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static void at91_twi_read_next_byte(struct at91_twi_dev *dev)
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{
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if (dev->buf_len <= 0)
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if (!dev->buf_len)
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return;
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/* 8bit read works with and without FIFO */
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