| Message ID | 7c2d5f3815949faf6d3a0237a7b5f272f00a7ae9.1672418969.git.christophe.jaillet@wanadoo.fr (mailing list archive) |
|---|---|
| State | Accepted |
| Headers | show |
| Series | watchdog: qcom: Use devm_clk_get_enabled() helper | expand |
On Fri, Dec 30, 2022 at 05:49:47PM +0100, Christophe JAILLET wrote: > The devm_clk_get_enabled() helper: > - calls devm_clk_get() > - calls clk_prepare_enable() and registers what is needed in order to > call clk_disable_unprepare() when needed, as a managed resource. > > This simplifies the code and avoids the need of a dedicated function used > with devm_add_action_or_reset(). > > Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr> Reviewed-by: Guenter Roeck <linux@roeck-us.net> > --- > drivers/watchdog/qcom-wdt.c | 16 +--------------- > 1 file changed, 1 insertion(+), 15 deletions(-) > > diff --git a/drivers/watchdog/qcom-wdt.c b/drivers/watchdog/qcom-wdt.c > index 0d2209c5eaca..d776474dcdf3 100644 > --- a/drivers/watchdog/qcom-wdt.c > +++ b/drivers/watchdog/qcom-wdt.c > @@ -175,11 +175,6 @@ static const struct watchdog_info qcom_wdt_pt_info = { > .identity = KBUILD_MODNAME, > }; > > -static void qcom_clk_disable_unprepare(void *data) > -{ > - clk_disable_unprepare(data); > -} > - > static const struct qcom_wdt_match_data match_data_apcs_tmr = { > .offset = reg_offset_data_apcs_tmr, > .pretimeout = false, > @@ -226,21 +221,12 @@ static int qcom_wdt_probe(struct platform_device *pdev) > if (IS_ERR(wdt->base)) > return PTR_ERR(wdt->base); > > - clk = devm_clk_get(dev, NULL); > + clk = devm_clk_get_enabled(dev, NULL); > if (IS_ERR(clk)) { > dev_err(dev, "failed to get input clock\n"); > return PTR_ERR(clk); > } > > - ret = clk_prepare_enable(clk); > - if (ret) { > - dev_err(dev, "failed to setup clock\n"); > - return ret; > - } > - ret = devm_add_action_or_reset(dev, qcom_clk_disable_unprepare, clk); > - if (ret) > - return ret; > - > /* > * We use the clock rate to calculate the max timeout, so ensure it's > * not zero to avoid a divide-by-zero exception. > -- > 2.34.1 >
diff --git a/drivers/watchdog/qcom-wdt.c b/drivers/watchdog/qcom-wdt.c index 0d2209c5eaca..d776474dcdf3 100644 --- a/drivers/watchdog/qcom-wdt.c +++ b/drivers/watchdog/qcom-wdt.c @@ -175,11 +175,6 @@ static const struct watchdog_info qcom_wdt_pt_info = { .identity = KBUILD_MODNAME, }; -static void qcom_clk_disable_unprepare(void *data) -{ - clk_disable_unprepare(data); -} - static const struct qcom_wdt_match_data match_data_apcs_tmr = { .offset = reg_offset_data_apcs_tmr, .pretimeout = false, @@ -226,21 +221,12 @@ static int qcom_wdt_probe(struct platform_device *pdev) if (IS_ERR(wdt->base)) return PTR_ERR(wdt->base); - clk = devm_clk_get(dev, NULL); + clk = devm_clk_get_enabled(dev, NULL); if (IS_ERR(clk)) { dev_err(dev, "failed to get input clock\n"); return PTR_ERR(clk); } - ret = clk_prepare_enable(clk); - if (ret) { - dev_err(dev, "failed to setup clock\n"); - return ret; - } - ret = devm_add_action_or_reset(dev, qcom_clk_disable_unprepare, clk); - if (ret) - return ret; - /* * We use the clock rate to calculate the max timeout, so ensure it's * not zero to avoid a divide-by-zero exception.
The devm_clk_get_enabled() helper: - calls devm_clk_get() - calls clk_prepare_enable() and registers what is needed in order to call clk_disable_unprepare() when needed, as a managed resource. This simplifies the code and avoids the need of a dedicated function used with devm_add_action_or_reset(). Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr> --- drivers/watchdog/qcom-wdt.c | 16 +--------------- 1 file changed, 1 insertion(+), 15 deletions(-)