> -----Original Message-----
> From: Axel Lin [mailto:axel.lin@ingics.com]
> Sent: Wednesday, March 19, 2014 11:55 AM
> To: Mark Brown
> Cc: Yang, Wenyou; linux-spi@vger.kernel.org
> Subject: [PATCH 2/7] spi: atmel: Let spi core validate Tx/Rx buffers for
> non-zero length transfer
> 
> Signed-off-by: Axel Lin <axel.lin@ingics.com>
Acked-by: Wenyou.Yang <wenyou.yang@atmel.com>
> ---
>  drivers/spi/spi-atmel.c | 5 -----
>  1 file changed, 5 deletions(-)
> 
> diff --git a/drivers/spi/spi-atmel.c b/drivers/spi/spi-atmel.c index
> bda961e..c54492b 100644
> --- a/drivers/spi/spi-atmel.c
> +++ b/drivers/spi/spi-atmel.c
> @@ -1065,11 +1065,6 @@ static int atmel_spi_one_transfer(struct
> spi_master *master,
> 
>  	as = spi_master_get_devdata(master);
> 
> -	if (!(xfer->tx_buf || xfer->rx_buf) && xfer->len) {
> -		dev_dbg(&spi->dev, "missing rx or tx buf\n");
> -		return -EINVAL;
> -	}
> -
>  	if (xfer->bits_per_word) {
>  		asd = spi->controller_state;
>  		bits = (asd->csr >> 4) & 0xf;
> --
> 1.8.3.2
> 
> 

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