> We recently changed this from using devm_ioremap() to using
> devm_ioremap_resource() and unfortunately the former returns NULL while
> the latter returns error pointers. The check for errors needs to be
> updated as well.
>
> Fixes: e27dba1951ce ("net: Use of_reserved_mem_region_to_resource{_byname}() for "memory-region"")
> Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
Acked-by: Lorenzo Bianconi <lorenzo@xxxxxxxxxx>
> ---
> drivers/net/ethernet/mediatek/mtk_wed_mcu.c | 4 +++-
> 1 file changed, 3 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/net/ethernet/mediatek/mtk_wed_mcu.c b/drivers/net/ethernet/mediatek/mtk_wed_mcu.c
> index 8498b35ec7a6..fa6b21603416 100644
> --- a/drivers/net/ethernet/mediatek/mtk_wed_mcu.c
> +++ b/drivers/net/ethernet/mediatek/mtk_wed_mcu.c
> @@ -247,8 +247,10 @@ mtk_wed_get_memory_region(struct mtk_wed_hw *hw, const char *name,
> region->phy_addr = res.start;
> region->size = resource_size(&res);
> region->addr = devm_ioremap_resource(hw->dev, &res);
> + if (IS_ERR(region->addr))
> + return PTR_ERR(region->addr);
>
> - return !region->addr ? -EINVAL : 0;
> + return 0;
> }
>
> static int
> --
> 2.47.2
>
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