]> git.ipfire.org Git - thirdparty/kernel/stable.git/commit
phy: core: Fix that API devm_of_phy_provider_unregister() fails to unregister the...
authorZijun Hu <quic_zijuhu@quicinc.com>
Fri, 13 Dec 2024 12:36:42 +0000 (20:36 +0800)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Thu, 2 Jan 2025 09:34:12 +0000 (10:34 +0100)
commitf797151e8479aff2c3ec4c7e017ab7456090a1ab
tree2e8216173cebb9baceecbab76bc1a97bc3ba012e
parent09f17bfb3653a55d1e11517b0cd5d46f1c0f2eab
phy: core: Fix that API devm_of_phy_provider_unregister() fails to unregister the phy provider

commit c0b82ab95b4f1fbc3e3aeab9d829d012669524b6 upstream.

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%40quicinc.com
Link: https://lore.kernel.org/r/20241213-phy_core_fix-v6-2-40ae28f5015a@quicinc.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/phy/phy-core.c