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[v6,3/6] phy: core: Fix that API devm_phy_destroy() fails to destroy the phy

Message ID 20241213-phy_core_fix-v6-3-40ae28f5015a@quicinc.com
State New
Headers show
Series phy: core: Fix bugs for several APIs and simplify an API | expand

Commit Message

Zijun Hu Dec. 13, 2024, 12:36 p.m. UTC 
From: Zijun Hu <quic_zijuhu@quicinc.com>

For devm_phy_destroy(), its comment says it needs to invoke phy_destroy()
to destroy the phy, but it will not actually invoke the function since
devres_destroy() does not call devm_phy_consume(), and the missing
phy_destroy() call will cause that the phy fails to be destroyed.

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>
---
Why to fix the API here instead of directly deleting it?

1) it is simpler, just one line change.
2) it may be used in future.
3) ensure this restored API right if need to restore it in future
   after deleting.

Anyone may remove such APIs separately later if he/she cares.
---
 drivers/phy/phy-core.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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Patch

diff --git a/drivers/phy/phy-core.c b/drivers/phy/phy-core.c
index de07e1616b34d12056024558124f3ea2469c0323..52ca590a58b9c303b21bf892565612a7ab92c095 100644
--- a/drivers/phy/phy-core.c
+++ b/drivers/phy/phy-core.c
@@ -1121,7 +1121,7 @@  void devm_phy_destroy(struct device *dev, struct phy *phy)
 {
 	int r;
 
-	r = devres_destroy(dev, devm_phy_consume, devm_phy_match, phy);
+	r = devres_release(dev, devm_phy_consume, devm_phy_match, phy);
 	dev_WARN_ONCE(dev, r, "couldn't find PHY resource\n");
 }
 EXPORT_SYMBOL_GPL(devm_phy_destroy);