diff mbox series

[v6,phy-next,17/28] phy: make phy_get_mode(), phy_(get|set)_bus_width() NULL tolerant

Message ID 20260327184706.1600329-18-vladimir.oltean@nxp.com (mailing list archive)
State New
Headers
Series Split Generic PHY consumer and provider |

Commit Message

Vladimir Oltean March 27, 2026, 6:46 p.m. UTC 
The PHY API has an optional "get" which returns NULL, so it needs to
accept that NULL coming back in.

Most PHY functions do this, only the formerly static inline attribute
dereferences did not.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
---
v2->v6: none
v1->v2: patch is new
---
 drivers/phy/phy-core.c  | 9 ++++++++-
 include/linux/phy/phy.h | 2 ++
 2 files changed, 10 insertions(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/drivers/phy/phy-core.c b/drivers/phy/phy-core.c
index a1aff00fba7c..0d0be494cfd7 100644
--- a/drivers/phy/phy-core.c
+++ b/drivers/phy/phy-core.c
@@ -624,19 +624,26 @@  EXPORT_SYMBOL_GPL(phy_validate);
 
 enum phy_mode phy_get_mode(struct phy *phy)
 {
+	if (!phy)
+		return PHY_MODE_INVALID;
+
 	return phy->attrs.mode;
 }
 EXPORT_SYMBOL_GPL(phy_get_mode);
 
 int phy_get_bus_width(struct phy *phy)
 {
+	if (!phy)
+		return 0;
+
 	return phy->attrs.bus_width;
 }
 EXPORT_SYMBOL_GPL(phy_get_bus_width);
 
 void phy_set_bus_width(struct phy *phy, int bus_width)
 {
-	phy->attrs.bus_width = bus_width;
+	if (phy)
+		phy->attrs.bus_width = bus_width;
 }
 EXPORT_SYMBOL_GPL(phy_set_bus_width);
 
diff --git a/include/linux/phy/phy.h b/include/linux/phy/phy.h
index f208edd25afe..a7e2432ca1ae 100644
--- a/include/linux/phy/phy.h
+++ b/include/linux/phy/phy.h
@@ -248,6 +248,8 @@  static inline int phy_notify_state(struct phy *phy, union phy_notify state)
 
 static inline int phy_get_bus_width(struct phy *phy)
 {
+	if (!phy)
+		return 0;
 	return -ENOSYS;
 }