5.4-stable review patch. If anyone has any objections, please let me know.
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From: Zijun Hu quic_zijuhu@quicinc.com
[ Upstream commit c0b82ab95b4f1fbc3e3aeab9d829d012669524b6 ]
For devm_of_phy_provider_unregister(), its comment says it needs to invoke of_phy_provider_unregister() to unregister the phy provider, but it will not actually invoke the function since devres_destroy() does not call devm_phy_provider_release(), and the missing of_phy_provider_unregister() call will cause:
- The phy provider fails to be unregistered. - Leak both memory and the OF node refcount.
Fortunately, the faulty API has not been used by current kernel tree. Fix by using devres_release() instead of devres_destroy() within the API.
Fixes: ff764963479a ("drivers: phy: add generic PHY framework") Reviewed-by: Johan Hovold johan+linaro@kernel.org Signed-off-by: Zijun Hu quic_zijuhu@quicinc.com Link: https://lore.kernel.org/stable/20241213-phy_core_fix-v6-2-40ae28f5015a%40qui... Link: https://lore.kernel.org/r/20241213-phy_core_fix-v6-2-40ae28f5015a@quicinc.co... Signed-off-by: Vinod Koul vkoul@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- 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 ffe89ed15a36..c94a0d2c4516 100644 --- a/drivers/phy/phy-core.c +++ b/drivers/phy/phy-core.c @@ -1094,12 +1094,12 @@ 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);