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Date: Fri, 22 Apr 2022 09:59:54 +0800 From: Miaoqian Lin <linmq006@...il.com> To: Stephen Boyd <sboyd@...nel.org>, Abel Vesa <abel.vesa@....com>, Dong Aisheng <aisheng.dong@....com>, Fabio Estevam <festevam@...il.com>, Michael Turquette <mturquette@...libre.com>, NXP Linux Team <linux-imx@....com>, Pengutronix Kernel Team <kernel@...gutronix.de>, Sascha Hauer <s.hauer@...gutronix.de>, Shawn Guo <shawnguo@...nel.org>, linux-arm-kernel@...ts.infradead.org, linux-clk@...r.kernel.org, linux-kernel@...r.kernel.org Subject: Re: [PATCH v2] clk: imx: scu: Use pm_runtime_resume_and_get to fix pm_runtime_get_sync() usage On 2022/4/22 9:44, Stephen Boyd wrote: > Quoting Miaoqian Lin (2022-04-21 18:33:16) >> If the device is already in a runtime PM enabled state >> pm_runtime_get_sync() will return 1. >> >> Also, we need to call pm_runtime_put_noidle() when pm_runtime_get_sync() >> fails, so use pm_runtime_resume_and_get() instead. this function >> will handle this. >> >> Fixes: 78edeb080330 ("clk: imx: scu: add runtime pm support") >> Signed-off-by: Miaoqian Lin <linmq006@...il.com> >> --- > Please don't send patches as replies to previous versions of the patch. Sorry, I thought I should keep them in one thread, to provide the context for other people to follow up. Am I suppose to resend it? >> drivers/clk/imx/clk-scu.c | 2 +- >> 1 file changed, 1 insertion(+), 1 deletion(-) >> >> diff --git a/drivers/clk/imx/clk-scu.c b/drivers/clk/imx/clk-scu.c >> index 083da31dc3ea..2044e62980e3 100644 >> --- a/drivers/clk/imx/clk-scu.c >> +++ b/drivers/clk/imx/clk-scu.c >> @@ -528,7 +528,7 @@ static int imx_clk_scu_probe(struct platform_device *pdev) >> pm_runtime_use_autosuspend(&pdev->dev); >> pm_runtime_enable(dev); >> >> - ret = pm_runtime_get_sync(dev); >> + ret = pm_runtime_resume_and_get(dev); >> if (ret) { >> pm_genpd_remove_device(dev); >> pm_runtime_disable(dev); >> -- >> 2.17.1 >>
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