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From: "Rafael J. Wysocki" <rafael@kernel.org>
To: Linux PM <linux-pm@vger.kernel.org>
Cc: LKML <linux-kernel@vger.kernel.org>,
	Ulf Hansson <ulf.hansson@linaro.org>,
	Brian Norris <briannorris@chromium.org>,
	Vinod Koul <vkoul@kernel.org>,
	Neil Armstrong <neil.armstrong@linaro.org>,
	Heiko Stuebner <heiko@sntech.de>,
	linux-phy@lists.infradead.org,
	linux-rockchip@lists.infradead.org
Subject: [PATCH v1 14/23] phy: rockchip-samsung-dcphy: Discard pm_runtime_put() return value
Date: Mon, 22 Dec 2025 21:21:30 +0100	[thread overview]
Message-ID: <2281919.Icojqenx9y@rafael.j.wysocki> (raw)
In-Reply-To: <6245770.lOV4Wx5bFT@rafael.j.wysocki>

From: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

Passing pm_runtime_put() return value to the callers is not particularly
useful.

Returning an error code from pm_runtime_put() merely means that it has
not queued up a work item to check whether or not the device can be
suspended and there are many perfectly valid situations in which that
can happen, like after writing "on" to the devices' runtime PM "control"
attribute in sysfs for one example.  It also happens when the kernel is
configured with CONFIG_PM unset.

Accordingly, update samsung_mipi_dcphy_exit() to simply discard the
return value of pm_runtime_put() and always return success to the
caller.

This will facilitate a planned change of the pm_runtime_put() return
type to void in the future.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
---

This patch is part of a series, but it doesn't depend on anything else
in that series.  The last patch in the series depends on it.

It can be applied by itself and if you decide to do so, please let me
know.

Otherwise, an ACK or equivalent will be appreciated, but also the lack
of specific criticism will be eventually regarded as consent.

---
 drivers/phy/rockchip/phy-rockchip-samsung-dcphy.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

--- a/drivers/phy/rockchip/phy-rockchip-samsung-dcphy.c
+++ b/drivers/phy/rockchip/phy-rockchip-samsung-dcphy.c
@@ -1508,7 +1508,9 @@ static int samsung_mipi_dcphy_exit(struc
 {
 	struct samsung_mipi_dcphy *samsung = phy_get_drvdata(phy);
 
-	return pm_runtime_put(samsung->dev);
+	pm_runtime_put(samsung->dev);
+
+	return 0;
 }
 
 static const struct phy_ops samsung_mipi_dcphy_ops = {




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  parent reply	other threads:[~2025-12-22 20:37 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <6245770.lOV4Wx5bFT@rafael.j.wysocki>
2025-12-22 20:18 ` [PATCH v1 13/23] phy: freescale: Discard pm_runtime_put() return value Rafael J. Wysocki
2025-12-22 20:21 ` Rafael J. Wysocki [this message]
2025-12-22 20:22 ` [PATCH v1 15/23] phy: core: Discard pm_runtime_put() return values Rafael J. Wysocki
2025-12-30 10:34   ` Geert Uytterhoeven
2025-12-30 10:54     ` Geert Uytterhoeven
2025-12-30 15:05       ` Geert Uytterhoeven
2025-12-30 16:18         ` Rafael J. Wysocki
2025-12-30 16:17       ` Rafael J. Wysocki

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