On Fri, 3 Feb 2023 at 03:14, Krzysztof Kozlowski
<krzysztof.kozlowski@xxxxxxxxxx> wrote:
>
> On 03/02/2023 07:09, Sam Protsenko wrote:
> > Extract parent clock enabling from exynos_arm64_register_cmu() to
> > dedicated function. No functional change.
> >
> > No functional change.
> >
> > Signed-off-by: Sam Protsenko <semen.protsenko@xxxxxxxxxx>
> > ---
> > drivers/clk/samsung/clk-exynos-arm64.c | 53 +++++++++++++++++---------
> > 1 file changed, 36 insertions(+), 17 deletions(-)
> >
> > diff --git a/drivers/clk/samsung/clk-exynos-arm64.c b/drivers/clk/samsung/clk-exynos-arm64.c
> > index b921b9a1134a..361663223a24 100644
> > --- a/drivers/clk/samsung/clk-exynos-arm64.c
> > +++ b/drivers/clk/samsung/clk-exynos-arm64.c
> > @@ -56,6 +56,41 @@ static void __init exynos_arm64_init_clocks(struct device_node *np,
> > iounmap(reg_base);
> > }
> >
> > +/**
> > + * exynos_arm64_enable_bus_clk - Enable parent clock of specified CMU
> > + *
> > + * @dev: Device object; may be NULL if this function is not being
> > + * called from platform driver probe function
> > + * @np: CMU device tree node
> > + * @cmu: CMU data
> > + *
> > + * Keep CMU parent clock running (needed for CMU registers access).
> > + *
> > + * Return: 0 on success or negative error code on failure.
> > + */
> > +static int __init exynos_arm64_enable_bus_clk(struct device *dev,
> > + struct device_node *np, const struct samsung_cmu_info *cmu)
>
> Align the arguments.
>
In this particular case, if I align arguments to match the open
parentheses, the last argument declaration won't fit the 80 characters
limit. I know it's not a strict requirement anymore, but the whole
point of breaking the line is to kind of keep it short. So I suggest
keeping this one as is, if you don't have a strong opinion about it.
> > +{
> > + struct clk *parent_clk;
> > +
> > + if (!cmu->clk_name)
> > + return 0;
> > +
> > + if (dev)
> > + parent_clk = clk_get(dev, cmu->clk_name);
> > + else
> > + parent_clk = of_clk_get_by_name(np, cmu->clk_name);
> > +
> > + if (IS_ERR(parent_clk)) {
> > + pr_err("%s: could not find bus clock %s; err = %ld\n",
> > + __func__, cmu->clk_name, PTR_ERR(parent_clk));
> > + return PTR_ERR(parent_clk);
> > + }
> > +
> > + clk_prepare_enable(parent_clk);
> > + return 0;
>
> You do not check the return value in exynos_arm64_register_cmu() below,
> so either make it a void or add the check.
>
Thanks, will add the check in v2.
>
> Best regards,
> Krzysztof
>
