Re: [PATCH 1/1] spi: imx: fix issue when tx_buf or rx_buf is NULL

[Leonard Crestez <leonard.crestez@xxxxxxx>]

On Thu, 2017-05-18 at 03:01 -0700, jiada_wang@xxxxxxxxxx wrote:
> From: Jiada Wang <jiada_wang@xxxxxxxxxx>
> 
> In case either transfer->tx_buf or transfer->rx_buf is NULL,
> manipulation of buffer in spi_imx_u32_swap_u[8|16]() will cause
> NULL pointer dereference crash.
> 
> Add buffer check at very beginning of spi_imx_u32_swap_u[8|16](),
> to avoid such crash.
> 
> Signed-off-by: Jiada Wang <jiada_wang@xxxxxxxxxx>
> Reported-by: Leonard Crestez <leonard.crestez@xxxxxxx>

Tested-by: Leonard Crestez <leonard.crestez@xxxxxxx>
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