[PATCH 3/3] mtd: nand: add NAND driver for Broadcom STB NAND controller

[Florian Fainelli]

[snip]

> +static int brcmnand_dma_trans(struct brcmnand_host *host, u64 addr, u32 *buf,
> +			      u32 len, u8 dma_cmd)
> +{
> +	struct brcmnand_controller *ctrl = host->ctrl;
> +	dma_addr_t buf_pa;
> +	int dir = dma_cmd == CMD_PAGE_READ ? DMA_FROM_DEVICE : DMA_TO_DEVICE;
> +
> +	buf_pa = dma_map_single(ctrl->dev, buf, len, dir);

We are missing a dma_mapping_error() check here.
-- 
Florian