From: Sam Protsenko <semen.protsenko@linaro.org> To: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Cc: Marek Szyprowski <m.szyprowski@samsung.com>, Sylwester Nawrocki <s.nawrocki@samsung.com>, Chanwoo Choi <cw00.choi@samsung.com>, Tomasz Figa <tomasz.figa@gmail.com>, Alim Akhtar <alim.akhtar@samsung.com>, Chanho Park <chanho61.park@samsung.com>, David Virag <virag.david003@gmail.com>, Sumit Semwal <sumit.semwal@linaro.org>, Michael Turquette <mturquette@baylibre.com>, Stephen Boyd <sboyd@kernel.org>, linux-samsung-soc@vger.kernel.org, linux-clk@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 5/6] clk: samsung: Extract parent clock enabling to common function Date: Wed, 8 Feb 2023 00:00:36 -0600 [thread overview] Message-ID: <CAPLW+4kqJP9LK3_i30QEzz9y2PiutbYDrwbOaRJ5wQnPRjDvNg@mail.gmail.com> (raw) In-Reply-To: <03eeacfb-22ff-8224-30d7-6c187b179fd7@linaro.org> On Fri, 3 Feb 2023 at 03:14, Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> 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@linaro.org> > > --- > > 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 >
WARNING: multiple messages have this Message-ID (diff)
From: Sam Protsenko <semen.protsenko@linaro.org> To: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Cc: Marek Szyprowski <m.szyprowski@samsung.com>, Sylwester Nawrocki <s.nawrocki@samsung.com>, Chanwoo Choi <cw00.choi@samsung.com>, Tomasz Figa <tomasz.figa@gmail.com>, Alim Akhtar <alim.akhtar@samsung.com>, Chanho Park <chanho61.park@samsung.com>, David Virag <virag.david003@gmail.com>, Sumit Semwal <sumit.semwal@linaro.org>, Michael Turquette <mturquette@baylibre.com>, Stephen Boyd <sboyd@kernel.org>, linux-samsung-soc@vger.kernel.org, linux-clk@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 5/6] clk: samsung: Extract parent clock enabling to common function Date: Wed, 8 Feb 2023 00:00:36 -0600 [thread overview] Message-ID: <CAPLW+4kqJP9LK3_i30QEzz9y2PiutbYDrwbOaRJ5wQnPRjDvNg@mail.gmail.com> (raw) In-Reply-To: <03eeacfb-22ff-8224-30d7-6c187b179fd7@linaro.org> On Fri, 3 Feb 2023 at 03:14, Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> 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@linaro.org> > > --- > > 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 > _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2023-02-08 6:00 UTC|newest] Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top [not found] <CGME20230203060905eucas1p20dc8b2dbf93ec2b0c604bd461afbae94@eucas1p2.samsung.com> 2023-02-03 6:09 ` [PATCH 0/6] clk: samsung: Add PM support for ARM64 Exynos chips Sam Protsenko 2023-02-03 6:09 ` Sam Protsenko 2023-02-03 6:09 ` [PATCH 1/6] clk: samsung: Don't pass reg_base to samsung_clk_register_pll() Sam Protsenko 2023-02-03 6:09 ` Sam Protsenko 2023-02-03 6:09 ` [PATCH 2/6] clk: samsung: Remove np argument from samsung_clk_init() Sam Protsenko 2023-02-03 6:09 ` Sam Protsenko 2023-02-03 6:09 ` [PATCH 3/6] clk: samsung: Set dev in samsung_clk_init() Sam Protsenko 2023-02-03 6:09 ` Sam Protsenko 2023-02-03 6:09 ` [PATCH 4/6] clk: samsung: Extract clocks registration to common function Sam Protsenko 2023-02-03 6:09 ` Sam Protsenko 2023-02-03 6:09 ` [PATCH 5/6] clk: samsung: Extract parent clock enabling " Sam Protsenko 2023-02-03 6:09 ` Sam Protsenko 2023-02-03 9:14 ` Krzysztof Kozlowski 2023-02-03 9:14 ` Krzysztof Kozlowski 2023-02-08 6:00 ` Sam Protsenko [this message] 2023-02-08 6:00 ` Sam Protsenko 2023-02-03 6:09 ` [PATCH 6/6] clk: samsung: exynos5433: Extract PM support to common ARM64 layer Sam Protsenko 2023-02-03 6:09 ` Sam Protsenko 2023-02-03 9:18 ` Krzysztof Kozlowski 2023-02-03 9:18 ` Krzysztof Kozlowski 2023-02-08 6:08 ` Sam Protsenko 2023-02-08 6:08 ` Sam Protsenko 2023-02-03 12:19 ` kernel test robot 2023-02-03 12:19 ` kernel test robot 2023-02-03 14:33 ` [PATCH 0/6] clk: samsung: Add PM support for ARM64 Exynos chips Marek Szyprowski 2023-02-03 14:33 ` Marek Szyprowski 2023-02-08 6:05 ` Sam Protsenko 2023-02-08 6:05 ` Sam Protsenko
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