On Wed, Jan 13, 2021 at 03:31:00PM +0800, Qinglang Miao wrote:
> If alloc_canfd_skb returns NULL, 'cfg' is an uninitialized
> variable, so we should check 'skb' rather than 'cfd' after
> calling alloc_canfd_skb(priv->ndev, &cfd).
>
> Fixes: 55e5b97f003e ("can: mcp25xxfd: add driver for Microchip MCP25xxFD SPI CAN")
> Signed-off-by: Qinglang Miao <miaoqinglang@xxxxxxxxxx>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@xxxxxxxxxx>
Thanks,
Mani
> ---
> drivers/net/can/spi/mcp251xfd/mcp251xfd-core.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/net/can/spi/mcp251xfd/mcp251xfd-core.c b/drivers/net/can/spi/mcp251xfd/mcp251xfd-core.c
> index 77129d5f4..792d55ba4 100644
> --- a/drivers/net/can/spi/mcp251xfd/mcp251xfd-core.c
> +++ b/drivers/net/can/spi/mcp251xfd/mcp251xfd-core.c
> @@ -1492,7 +1492,7 @@ mcp251xfd_handle_rxif_one(struct mcp251xfd_priv *priv,
> else
> skb = alloc_can_skb(priv->ndev, (struct can_frame **)&cfd);
>
> - if (!cfd) {
> + if (!skb) {
> stats->rx_dropped++;
> return 0;
> }
> --
> 2.23.0
>
