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From: Abel Vesa <abel.vesa@nxp.com>
To: Miaoqian Lin <linmq006@gmail.com>
Cc: Michael Turquette <mturquette@baylibre.com>,
	Stephen Boyd <sboyd@kernel.org>, Shawn Guo <shawnguo@kernel.org>,
	Sascha Hauer <s.hauer@pengutronix.de>,
	Pengutronix Kernel Team <kernel@pengutronix.de>,
	Fabio Estevam <festevam@gmail.com>,
	NXP Linux Team <linux-imx@nxp.com>,
	Dong Aisheng <aisheng.dong@nxp.com>,
	linux-clk@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH] clk: imx: scu: Fix pm_runtime_get_sync() error checking
Date: Mon, 18 Apr 2022 14:54:34 +0300	[thread overview]
Message-ID: <Yl1Rege1GhPwwU6n@abelvesa> (raw)
In-Reply-To: <20220412065719.17735-1-linmq006@gmail.com>

On 22-04-12 06:57:18, Miaoqian Lin wrote:
> If the device is already in a runtime PM enabled state
> pm_runtime_get_sync() will return 1, so a test for negative
> value should be used to check for errors.
>
> Fixes: 78edeb080330 ("clk: imx: scu: add runtime pm support")
> Signed-off-by: Miaoqian Lin <linmq006@gmail.com>

Reviewed-by: Abel Vesa <abel.vesa@nxp.com>

> ---
>  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..18c6190eeffd 100644
> --- a/drivers/clk/imx/clk-scu.c
> +++ b/drivers/clk/imx/clk-scu.c
> @@ -529,7 +529,7 @@ static int imx_clk_scu_probe(struct platform_device *pdev)
>  		pm_runtime_enable(dev);
>
>  		ret = pm_runtime_get_sync(dev);
> -		if (ret) {
> +		if (ret < 0) {
>  			pm_genpd_remove_device(dev);
>  			pm_runtime_disable(dev);
>  			return ret;
> --
> 2.17.1
>

WARNING: multiple messages have this Message-ID (diff)
From: Abel Vesa <abel.vesa@nxp.com>
To: Miaoqian Lin <linmq006@gmail.com>
Cc: Michael Turquette <mturquette@baylibre.com>,
	Stephen Boyd <sboyd@kernel.org>, Shawn Guo <shawnguo@kernel.org>,
	Sascha Hauer <s.hauer@pengutronix.de>,
	Pengutronix Kernel Team <kernel@pengutronix.de>,
	Fabio Estevam <festevam@gmail.com>,
	NXP Linux Team <linux-imx@nxp.com>,
	Dong Aisheng <aisheng.dong@nxp.com>,
	linux-clk@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH] clk: imx: scu: Fix pm_runtime_get_sync() error checking
Date: Mon, 18 Apr 2022 14:54:34 +0300	[thread overview]
Message-ID: <Yl1Rege1GhPwwU6n@abelvesa> (raw)
In-Reply-To: <20220412065719.17735-1-linmq006@gmail.com>

On 22-04-12 06:57:18, Miaoqian Lin wrote:
> If the device is already in a runtime PM enabled state
> pm_runtime_get_sync() will return 1, so a test for negative
> value should be used to check for errors.
>
> Fixes: 78edeb080330 ("clk: imx: scu: add runtime pm support")
> Signed-off-by: Miaoqian Lin <linmq006@gmail.com>

Reviewed-by: Abel Vesa <abel.vesa@nxp.com>

> ---
>  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..18c6190eeffd 100644
> --- a/drivers/clk/imx/clk-scu.c
> +++ b/drivers/clk/imx/clk-scu.c
> @@ -529,7 +529,7 @@ static int imx_clk_scu_probe(struct platform_device *pdev)
>  		pm_runtime_enable(dev);
>
>  		ret = pm_runtime_get_sync(dev);
> -		if (ret) {
> +		if (ret < 0) {
>  			pm_genpd_remove_device(dev);
>  			pm_runtime_disable(dev);
>  			return ret;
> --
> 2.17.1
>

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  reply	other threads:[~2022-04-18 11:54 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-04-12  6:57 [PATCH] clk: imx: scu: Fix pm_runtime_get_sync() error checking Miaoqian Lin
2022-04-12  6:57 ` Miaoqian Lin
2022-04-18 11:54 ` Abel Vesa [this message]
2022-04-18 11:54   ` Abel Vesa
2022-04-22  1:20 ` Stephen Boyd
2022-04-22  1:20   ` Stephen Boyd
2022-04-22  1:32   ` Miaoqian Lin
2022-04-22  1:32     ` Miaoqian Lin
2022-04-22  1:33   ` [PATCH v2] clk: imx: scu: Use pm_runtime_resume_and_get to fix pm_runtime_get_sync() usage Miaoqian Lin
2022-04-22  1:33     ` Miaoqian Lin
2022-04-22  1:44     ` Stephen Boyd
2022-04-22  1:44       ` Stephen Boyd
2022-04-22  1:59       ` Miaoqian Lin
2022-04-22  1:59         ` Miaoqian Lin
2022-04-23  2:23         ` Stephen Boyd
2022-04-23  2:23           ` Stephen Boyd

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