| Message ID | 20240510094034.12493-1-linux.amoon@gmail.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | [v5,1/2] PM / devfreq: exynos: Use Use devm_clk_get_enabled() helpers | expand |
Hi All, On Fri, 10 May 2024 at 15:10, Anand Moon <linux.amoon@gmail.com> wrote: > > The devm_clk_get_enabled() helpers: > - call devm_clk_get() > - call clk_prepare_enable() and register what is needed in order to > call clk_disable_unprepare() when needed, as a managed resource. > > This simplifies the code and avoids the calls to clk_disable_unprepare(). > > While at it, use dev_err_probe consistently, and use its return value > to return the error code. > > Signed-off-by: Anand Moon <linux.amoon@gmail.com> Gentle ping? Thanks -Anand
24. 6. 17. 17:24에 Anand Moon 이(가) 쓴 글: > Hi All, > > On Fri, 10 May 2024 at 15:10, Anand Moon <linux.amoon@gmail.com> wrote: >> >> The devm_clk_get_enabled() helpers: >> - call devm_clk_get() >> - call clk_prepare_enable() and register what is needed in order to >> call clk_disable_unprepare() when needed, as a managed resource. >> >> This simplifies the code and avoids the calls to clk_disable_unprepare(). >> >> While at it, use dev_err_probe consistently, and use its return value >> to return the error code. >> >> Signed-off-by: Anand Moon <linux.amoon@gmail.com> > > Gentle ping? > > Thanks > -Anand > Applied it. Thanks. I'm sorry for late reply.
Hi Chanwoo, On Wed, 26 Jun 2024 at 20:00, Chanwoo Choi <chanwoo@kernel.org> wrote: > > 24. 6. 17. 17:24에 Anand Moon 이(가) 쓴 글: > > Hi All, > > > > On Fri, 10 May 2024 at 15:10, Anand Moon <linux.amoon@gmail.com> wrote: > >> > >> The devm_clk_get_enabled() helpers: > >> - call devm_clk_get() > >> - call clk_prepare_enable() and register what is needed in order to > >> call clk_disable_unprepare() when needed, as a managed resource. > >> > >> This simplifies the code and avoids the calls to clk_disable_unprepare(). > >> > >> While at it, use dev_err_probe consistently, and use its return value > >> to return the error code. > >> > >> Signed-off-by: Anand Moon <linux.amoon@gmail.com> > > > > Gentle ping? > > > > Thanks > > -Anand > > > > Applied it. Thanks. > I'm sorry for late reply. > Thanks & Regards -Anand > -- > Best Regards, > Samsung Electronics > Chanwoo Choi >
diff --git a/drivers/devfreq/exynos-bus.c b/drivers/devfreq/exynos-bus.c index 00118580905a..7d06c476d8e9 100644 --- a/drivers/devfreq/exynos-bus.c +++ b/drivers/devfreq/exynos-bus.c @@ -160,7 +160,6 @@ static void exynos_bus_exit(struct device *dev) platform_device_unregister(bus->icc_pdev); dev_pm_opp_of_remove_table(dev); - clk_disable_unprepare(bus->clk); dev_pm_opp_put_regulators(bus->opp_token); } @@ -171,7 +170,6 @@ static void exynos_bus_passive_exit(struct device *dev) platform_device_unregister(bus->icc_pdev); dev_pm_opp_of_remove_table(dev); - clk_disable_unprepare(bus->clk); } static int exynos_bus_parent_parse_of(struct device_node *np, @@ -247,23 +245,16 @@ static int exynos_bus_parse_of(struct device_node *np, int ret; /* Get the clock to provide each bus with source clock */ - bus->clk = devm_clk_get(dev, "bus"); - if (IS_ERR(bus->clk)) { - dev_err(dev, "failed to get bus clock\n"); - return PTR_ERR(bus->clk); - } - - ret = clk_prepare_enable(bus->clk); - if (ret < 0) { - dev_err(dev, "failed to get enable clock\n"); - return ret; - } + bus->clk = devm_clk_get_enabled(dev, "bus"); + if (IS_ERR(bus->clk)) + return dev_err_probe(dev, PTR_ERR(bus->clk), + "failed to get bus clock\n"); /* Get the freq and voltage from OPP table to scale the bus freq */ ret = dev_pm_opp_of_add_table(dev); if (ret < 0) { dev_err(dev, "failed to get OPP table\n"); - goto err_clk; + return ret; } rate = clk_get_rate(bus->clk); @@ -281,8 +272,6 @@ static int exynos_bus_parse_of(struct device_node *np, err_opp: dev_pm_opp_of_remove_table(dev); -err_clk: - clk_disable_unprepare(bus->clk); return ret; } @@ -453,7 +442,6 @@ static int exynos_bus_probe(struct platform_device *pdev) err: dev_pm_opp_of_remove_table(dev); - clk_disable_unprepare(bus->clk); err_reg: dev_pm_opp_put_regulators(bus->opp_token);
The devm_clk_get_enabled() helpers: - call devm_clk_get() - call clk_prepare_enable() and register what is needed in order to call clk_disable_unprepare() when needed, as a managed resource. This simplifies the code and avoids the calls to clk_disable_unprepare(). While at it, use dev_err_probe consistently, and use its return value to return the error code. Signed-off-by: Anand Moon <linux.amoon@gmail.com> --- v5 - No change V4 - wrap up the error messagee within 80 char v3 - No change v2 - No change --- drivers/devfreq/exynos-bus.c | 22 +++++----------------- 1 file changed, 5 insertions(+), 17 deletions(-)