linux-kernel - Re: [PATCH v2 1/2] clk: sprd: Use IS_ERR() to validate the return value of syscon_regmap_lookup_by

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Date:   Tue, 5 Nov 2019 16:24:58 +0800
From:   Baolin Wang <baolin.wang@...aro.org>
To:     Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>
Cc:     Orson Zhai <orsonzhai@...il.com>,
        Chunyan Zhang <zhang.lyra@...il.com>,
        linux-clk@...r.kernel.org, LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2 1/2] clk: sprd: Use IS_ERR() to validate the return
 value of syscon_regmap_lookup_by_phandle()

Hi Stephen,

On Tue, 8 Oct 2019 at 15:41, Baolin Wang <baolin.wang@...aro.org> wrote:
>
> The syscon_regmap_lookup_by_phandle() will never return NULL, thus use
> IS_ERR() to validate the return value instead of IS_ERR_OR_NULL().
>
> Fixes: d41f59fd92f2 ("clk: sprd: Add common infrastructure")
> Signed-off-by: Baolin Wang <baolin.wang@...aro.org>
> ---
> Changes from v1:
>  - Add fixes tag.
> ---

I did not see this patch in your clk tree (you only applied patch 2 in
this patch set), could you apply this patch if no other issues?
Thanks.

>  drivers/clk/sprd/common.c |    2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/clk/sprd/common.c b/drivers/clk/sprd/common.c
> index 9d56eac..7ad5ba2 100644
> --- a/drivers/clk/sprd/common.c
> +++ b/drivers/clk/sprd/common.c
> @@ -46,7 +46,7 @@ int sprd_clk_regmap_init(struct platform_device *pdev,
>
>         if (of_find_property(node, "sprd,syscon", NULL)) {
>                 regmap = syscon_regmap_lookup_by_phandle(node, "sprd,syscon");
> -               if (IS_ERR_OR_NULL(regmap)) {
> +               if (IS_ERR(regmap)) {
>                         pr_err("%s: failed to get syscon regmap\n", __func__);
>                         return PTR_ERR(regmap);
>                 }
> --
> 1.7.9.5
>


-- 
Baolin Wang
Best Regards