linux-kernel - Re: [PATCH] clk: Use of_node_name

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Date:   Tue, 11 Dec 2018 10:42:35 +0100
From:   Ulf Hansson <ulf.hansson@...aro.org>
To:     Rob Herring <robh@...nel.org>
Cc:     DTML <devicetree@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Geert Uytterhoeven <geert+renesas@...der.be>,
        Mike Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>, Tero Kristo <t-kristo@...com>,
        Linux-Renesas <linux-renesas-soc@...r.kernel.org>,
        linux-clk <linux-clk@...r.kernel.org>,
        linux-omap <linux-omap@...r.kernel.org>,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH] clk: Use of_node_name_eq for node name comparisons

On Wed, 5 Dec 2018 at 20:50, Rob Herring <robh@...nel.org> wrote:
>
> Convert string compares of DT node names to use of_node_name_eq helper
> instead. This removes direct access to the node name pointer.
>
> For instances using of_node_cmp, this has the side effect of now using
> case sensitive comparisons. This should not matter for any FDT based
> system which all of these are.
>
> Cc: Geert Uytterhoeven <geert+renesas@...der.be>
> Cc: Michael Turquette <mturquette@...libre.com>
> Cc: Stephen Boyd <sboyd@...nel.org>
> Cc: Tero Kristo <t-kristo@...com>
> Cc: Ulf Hansson <ulf.hansson@...aro.org>
> Cc: linux-renesas-soc@...r.kernel.org
> Cc: linux-clk@...r.kernel.org
> Cc: linux-omap@...r.kernel.org
> Cc: linux-arm-kernel@...ts.infradead.org
> Signed-off-by: Rob Herring <robh@...nel.org>

For the ux500 part:

Acked-by: Ulf Hansson <ulf.hansson@...aro.org>

Kind regards
Uffe

> ---
>  drivers/clk/renesas/clk-mstp.c   |  2 +-
>  drivers/clk/ti/clkctrl.c         |  2 +-
>  drivers/clk/ti/dpll.c            |  2 +-
>  drivers/clk/ux500/u8500_of_clk.c | 10 +++++-----
>  4 files changed, 8 insertions(+), 8 deletions(-)
>
> diff --git a/drivers/clk/renesas/clk-mstp.c b/drivers/clk/renesas/clk-mstp.c
> index 1c1768c2cc82..765175d1148a 100644
> --- a/drivers/clk/renesas/clk-mstp.c
> +++ b/drivers/clk/renesas/clk-mstp.c
> @@ -280,7 +280,7 @@ int cpg_mstp_attach_dev(struct generic_pm_domain *unused, struct device *dev)
>                         goto found;
>
>                 /* BSC on r8a73a4/sh73a0 uses zb_clk instead of an mstp clock */
> -               if (!strcmp(clkspec.np->name, "zb_clk"))
> +               if (of_node_name_eq(clkspec.np, "zb_clk"))
>                         goto found;
>
>                 of_node_put(clkspec.np);
> diff --git a/drivers/clk/ti/clkctrl.c b/drivers/clk/ti/clkctrl.c
> index 469f560ae1cf..40630eb950fc 100644
> --- a/drivers/clk/ti/clkctrl.c
> +++ b/drivers/clk/ti/clkctrl.c
> @@ -448,7 +448,7 @@ static void __init _ti_omap4_clkctrl_setup(struct device_node *node)
>         char *c;
>
>         if (!(ti_clk_get_features()->flags & TI_CLK_CLKCTRL_COMPAT) &&
> -           !strcmp(node->name, "clk"))
> +           of_node_name_eq(node, "clk"))
>                 ti_clk_features.flags |= TI_CLK_CLKCTRL_COMPAT;
>
>         addrp = of_get_address(node, 0, NULL, NULL);
> diff --git a/drivers/clk/ti/dpll.c b/drivers/clk/ti/dpll.c
> index 92e28af7afba..6c3329bc116f 100644
> --- a/drivers/clk/ti/dpll.c
> +++ b/drivers/clk/ti/dpll.c
> @@ -410,7 +410,7 @@ static void __init of_ti_omap3_dpll_setup(struct device_node *node)
>
>         if ((of_machine_is_compatible("ti,omap3630") ||
>              of_machine_is_compatible("ti,omap36xx")) &&
> -           !strcmp(node->name, "dpll5_ck"))
> +            of_node_name_eq(node, "dpll5_ck"))
>                 of_ti_dpll_setup(node, &omap3_dpll5_ck_ops, &dd);
>         else
>                 of_ti_dpll_setup(node, &omap3_dpll_ck_ops, &dd);
> diff --git a/drivers/clk/ux500/u8500_of_clk.c b/drivers/clk/ux500/u8500_of_clk.c
> index d5888591e1a9..18a3c4522831 100644
> --- a/drivers/clk/ux500/u8500_of_clk.c
> +++ b/drivers/clk/ux500/u8500_of_clk.c
> @@ -545,21 +545,21 @@ static void u8500_clk_init(struct device_node *np)
>         for_each_child_of_node(np, child) {
>                 static struct clk_onecell_data clk_data;
>
> -               if (!of_node_cmp(child->name, "prcmu-clock")) {
> +               if (of_node_name_eq(child, "prcmu-clock")) {
>                         clk_data.clks = prcmu_clk;
>                         clk_data.clk_num = ARRAY_SIZE(prcmu_clk);
>                         of_clk_add_provider(child, of_clk_src_onecell_get, &clk_data);
>                 }
> -               if (!of_node_cmp(child->name, "prcc-periph-clock"))
> +               if (of_node_name_eq(child, "prcc-periph-clock"))
>                         of_clk_add_provider(child, ux500_twocell_get, prcc_pclk);
>
> -               if (!of_node_cmp(child->name, "prcc-kernel-clock"))
> +               if (of_node_name_eq(child, "prcc-kernel-clock"))
>                         of_clk_add_provider(child, ux500_twocell_get, prcc_kclk);
>
> -               if (!of_node_cmp(child->name, "rtc32k-clock"))
> +               if (of_node_name_eq(child, "rtc32k-clock"))
>                         of_clk_add_provider(child, of_clk_src_simple_get, rtc_clk);
>
> -               if (!of_node_cmp(child->name, "smp-twd-clock"))
> +               if (of_node_name_eq(child, "smp-twd-clock"))
>                         of_clk_add_provider(child, of_clk_src_simple_get, twd_clk);
>         }
>  }
> --
> 2.19.1
>