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Message-Id: <20241020-phy_core_fix-v1-1-078062f7da71@quicinc.com>
Date: Sun, 20 Oct 2024 13:27:46 +0800
From: Zijun Hu <zijun_hu@...oud.com>
To: Vinod Koul <vkoul@...nel.org>,
Kishon Vijay Abraham I <kishon@...nel.org>, Felipe Balbi <balbi@...com>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Rob Herring <robh@...nel.org>, Arnd Bergmann <arnd@...db.de>,
Lee Jones <lee@...nel.org>
Cc: Zijun Hu <zijun_hu@...oud.com>, stable@...r.kernel.org,
linux-phy@...ts.infradead.org, netdev@...r.kernel.org,
linux-pci@...r.kernel.org, linux-kernel@...r.kernel.org,
Zijun Hu <quic_zijuhu@...cinc.com>
Subject: [PATCH 1/6] phy: core: Fix API devm_phy_put() can not release the
phy
From: Zijun Hu <quic_zijuhu@...cinc.com>
For devm_phy_put(), its comment says it needs to invoke phy_put() to
release the phy, but it does not do that actually, so it can not fully
undo what the API devm_phy_get() does, that is wrong, fixed by using
devres_release() instead of devres_destroy() within the API.
BTW, the API is directly used by below source files in error handling
path, so also fix relevant issue within these source files:
drivers/pci/controller/cadence/pcie-cadence.c
drivers/net/ethernet/ti/am65-cpsw-nuss.c
Fixes: ff764963479a ("drivers: phy: add generic PHY framework")
Cc: stable@...r.kernel.org
Cc: netdev@...r.kernel.org
Cc: linux-pci@...r.kernel.org
Signed-off-by: Zijun Hu <quic_zijuhu@...cinc.com>
---
drivers/phy/phy-core.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/phy/phy-core.c b/drivers/phy/phy-core.c
index f053b525ccff..f190d7126613 100644
--- a/drivers/phy/phy-core.c
+++ b/drivers/phy/phy-core.c
@@ -737,7 +737,7 @@ void devm_phy_put(struct device *dev, struct phy *phy)
if (!phy)
return;
- r = devres_destroy(dev, devm_phy_release, devm_phy_match, phy);
+ r = devres_release(dev, devm_phy_release, devm_phy_match, phy);
dev_WARN_ONCE(dev, r, "couldn't find PHY resource\n");
}
EXPORT_SYMBOL_GPL(devm_phy_put);
--
2.34.1
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