Patch "Revert "phy: IRQ cannot be shared"" has been added to the 4.4-stable tree

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

Revert "phy: IRQ cannot be shared"

to the 4.4-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:
revert-phy-irq-cannot-be-shared.patch
and it can be found in the queue-4.4 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

From: Xander Huff <[email protected]>
Date: Wed, 24 Aug 2016 16:47:53 -0500
Subject: Revert "phy: IRQ cannot be shared"

From: Xander Huff <[email protected]>

[ Upstream commit c3e70edd7c2eed6acd234627a6007627f5c76e8e ]

This reverts:
commit 33c133cc7598 ("phy: IRQ cannot be shared")

On hardware with multiple PHY devices hooked up to the same IRQ line, allow them to share it.

Sergei Shtylyov says:
"I'm not sure now what was the reason I concluded that the IRQ sharing was impossible... most probably I thought that the kernel IRQ handling code exited the loop over the IRQ actions once IRQ_HANDLED was returned -- which is obviously not so in reality..."

---
 drivers/net/phy/phy.c |    6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

@@ -640,8 +640,10 @@ phy_err:
 int phy_start_interrupts(struct phy_device *phydev)
 {
 	atomic_set(&phydev->irq_disable, 0);
-	if (request_irq(phydev->irq, phy_interrupt, 0, "phy_interrupt",
-			phydev) < 0) {
+	if (request_irq(phydev->irq, phy_interrupt,
+				IRQF_SHARED,
+				"phy_interrupt",
+				phydev) < 0) {
 		pr_warn("%s: Can't get IRQ %d (PHY)\n",
 			phydev->bus->name, phydev->irq);
 		phydev->irq = PHY_POLL;

Patches currently in stable-queue which might be from [email protected] are

queue-4.4/revert-phy-irq-cannot-be-shared.patch