[patch 2/2] mtd: spi-nor: Fix some error codes in cqspi_setup_flash()

[Marek Vasut]

On 10/13/2016 10:30 AM, Dan Carpenter wrote:
> We return success or possibly uninitialized values on these error paths
> instead of proper error codes.
> 
> Fixes: 140623410536 ("mtd: spi-nor: Add driver for Cadence Quad SPI Flash Controller")
> Signed-off-by: Dan Carpenter <dan.carpenter at oracle.com>
> 

Nice

Reviewed-by: Marek Vasut <marex at denx.de>

> diff --git a/drivers/mtd/spi-nor/cadence-quadspi.c b/drivers/mtd/spi-nor/cadence-quadspi.c
> index 944863b..d489fbd 100644
> --- a/drivers/mtd/spi-nor/cadence-quadspi.c
> +++ b/drivers/mtd/spi-nor/cadence-quadspi.c
> @@ -1077,12 +1077,14 @@ static int cqspi_setup_flash(struct cqspi_st *cqspi, struct device_node *np)
>  
>  	/* Get flash device data */
>  	for_each_available_child_of_node(dev->of_node, np) {
> -		if (of_property_read_u32(np, "reg", &cs)) {
> +		ret = of_property_read_u32(np, "reg", &cs);
> +		if (ret) {
>  			dev_err(dev, "Couldn't determine chip select.\n");
>  			goto err;
>  		}
>  
>  		if (cs >= CQSPI_MAX_CHIPSELECT) {
> +			ret = -EINVAL;
>  			dev_err(dev, "Chip select %d out of range.\n", cs);
>  			goto err;
>  		}
> 


-- 
Best regards,
Marek Vasut