linux-kernel - [PATCH 2/6] phy: core: Fix API devm_of_phy_provider_unregister() can not unregister the phy provider

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Message-Id: <20241020-phy_core_fix-v1-2-078062f7da71@quicinc.com>
Date: Sun, 20 Oct 2024 13:27:47 +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 2/6] phy: core: Fix API devm_of_phy_provider_unregister()
 can not unregister the phy provider

From: Zijun Hu <quic_zijuhu@...cinc.com>

For devm_of_phy_provider_unregister(), its comment says it needs to
invoke of_phy_provider_unregister() to unregister the phy provider
but it does not do that actually, so it can not fully undo what the
API devm_of_phy_provider_register() does, that is wrong, fixed by
using devres_release() instead of devres_destroy() within the API.

Fixes: ff764963479a ("drivers: phy: add generic PHY framework")
Cc: stable@...r.kernel.org
Signed-off-by: Zijun Hu <quic_zijuhu@...cinc.com>
---
 drivers/phy/phy-core.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/phy/phy-core.c b/drivers/phy/phy-core.c
index f190d7126613..de07e1616b34 100644
--- a/drivers/phy/phy-core.c
+++ b/drivers/phy/phy-core.c
@@ -1259,12 +1259,12 @@ EXPORT_SYMBOL_GPL(of_phy_provider_unregister);
  * of_phy_provider_unregister to unregister the phy provider.
  */
 void devm_of_phy_provider_unregister(struct device *dev,
-	struct phy_provider *phy_provider)
+				     struct phy_provider *phy_provider)
 {
 	int r;
 
-	r = devres_destroy(dev, devm_phy_provider_release, devm_phy_match,
-		phy_provider);
+	r = devres_release(dev, devm_phy_provider_release, devm_phy_match,
+			   phy_provider);
 	dev_WARN_ONCE(dev, r, "couldn't find PHY provider device resource\n");
 }
 EXPORT_SYMBOL_GPL(devm_of_phy_provider_unregister);

-- 
2.34.1