From: Dmitry Baryshkov dmitry.baryshkov@linaro.org
[ Upstream commit d58c04e305afbaa9dda7969151f06c4efe2c98b0 ]
As reported by Damon Ding, the phy_get_mode() call doesn't work as expected unless the PHY driver has a .set_mode() call. This prompts PHY drivers to have empty stubs for .set_mode() for the sake of being able to get the mode.
Make .set_mode() callback truly optional and update PHY's mode even if it there is none.
Cc: Damon Ding damon.ding@rock-chips.com Link: https://lore.kernel.org/r/96f8310f-93f1-4bcb-8637-137e1159ff83@rock-chips.co... Tested-by: Damon Ding damon.ding@rock-chips.com Signed-off-by: Dmitry Baryshkov dmitry.baryshkov@linaro.org Link: https://lore.kernel.org/r/20250209-phy-fix-set-moe-v2-1-76e248503856@linaro.... Signed-off-by: Vinod Koul vkoul@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/phy/phy-core.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-)
diff --git a/drivers/phy/phy-core.c b/drivers/phy/phy-core.c index 0730fe80dc3c1..069bcf49ee8f7 100644 --- a/drivers/phy/phy-core.c +++ b/drivers/phy/phy-core.c @@ -398,13 +398,14 @@ EXPORT_SYMBOL_GPL(phy_power_off);
int phy_set_mode_ext(struct phy *phy, enum phy_mode mode, int submode) { - int ret; + int ret = 0;
- if (!phy || !phy->ops->set_mode) + if (!phy) return 0;
mutex_lock(&phy->mutex); - ret = phy->ops->set_mode(phy, mode, submode); + if (phy->ops->set_mode) + ret = phy->ops->set_mode(phy, mode, submode); if (!ret) phy->attrs.mode = mode; mutex_unlock(&phy->mutex);