Patch "net: phylink: add mac_managed_pm in phylink_config structure" has been added to the 5.15-stable tree

[Sasha Levin <sashal@xxxxxxxxxx>]

This is a note to let you know that I've just added the patch titled

    net: phylink: add mac_managed_pm in phylink_config structure

to the 5.15-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     net-phylink-add-mac_managed_pm-in-phylink_config-str.patch
and it can be found in the queue-5.15 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.



commit 5cc2be6e11ab32ec72117dd2ba57fb848a5e6225
Author: Shenwei Wang <shenwei.wang@xxxxxxx>
Date:   Fri Oct 14 09:47:28 2022 -0500

    net: phylink: add mac_managed_pm in phylink_config structure
    
    [ Upstream commit 96de900ae78e7dbedc937fd91bafe2934579c65a ]
    
    The recent commit
    
    'commit 744d23c71af3 ("net: phy: Warn about incorrect
    mdio_bus_phy_resume() state")'
    
    requires the MAC driver explicitly tell the phy driver who is
    managing the PM, otherwise you will see warning during resume
    stage.
    
    Add a boolean property in the phylink_config structure so that
    the MAC driver can use it to tell the PHY driver if it wants to
    manage the PM.
    
    Fixes: 744d23c71af3 ("net: phy: Warn about incorrect mdio_bus_phy_resume() state")
    Signed-off-by: Shenwei Wang <shenwei.wang@xxxxxxx>
    Acked-by: Florian Fainelli <f.fainelli@xxxxxxxxx>
    Reviewed-by: Russell King (Oracle) <rmk+kernel@xxxxxxxxxxxxxxx>
    Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
    Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>

diff --git a/drivers/net/phy/phylink.c b/drivers/net/phy/phylink.c
index fef1416dcee4..7afcf6310d59 100644
--- a/drivers/net/phy/phylink.c
+++ b/drivers/net/phy/phylink.c
@@ -1050,6 +1050,9 @@ static int phylink_bringup_phy(struct phylink *pl, struct phy_device *phy,
 	if (phy_interrupt_is_valid(phy))
 		phy_request_interrupt(phy);
 
+	if (pl->config->mac_managed_pm)
+		phy->mac_managed_pm = true;
+
 	return 0;
 }
 
diff --git a/include/linux/phylink.h b/include/linux/phylink.h
index 237291196ce2..b306159c1fad 100644
--- a/include/linux/phylink.h
+++ b/include/linux/phylink.h
@@ -64,6 +64,7 @@ enum phylink_op_type {
  * @pcs_poll: MAC PCS cannot provide link change interrupt
  * @poll_fixed_state: if true, starts link_poll,
  *		      if MAC link is at %MLO_AN_FIXED mode.
+ * @mac_managed_pm: if true, indicate the MAC driver is responsible for PHY PM.
  * @ovr_an_inband: if true, override PCS to MLO_AN_INBAND
  * @get_fixed_state: callback to execute to determine the fixed link state,
  *		     if MAC link is at %MLO_AN_FIXED mode.
@@ -73,6 +74,7 @@ struct phylink_config {
 	enum phylink_op_type type;
 	bool pcs_poll;
 	bool poll_fixed_state;
+	bool mac_managed_pm;
 	bool ovr_an_inband;
 	void (*get_fixed_state)(struct phylink_config *config,
 				struct phylink_link_state *state);