Commit c3e70edd authored Aug 24, 2016 by Xander Huff Committed by David S. Miller Aug 25, 2016

Revert "phy: IRQ cannot be shared"



This reverts:
  commit 33c133cc ("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..."

Signed-off-by: Xander Huff <xander.huff@ni.com>
Signed-off-by: Nathan Sullivan <nathan.sullivan@ni.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

parent 4f101c47

drivers/net/phy/phy.c

+4 −2

Original line number	Diff line number	Diff line
		@@ -722,7 +722,9 @@ static int phy_disable_interrupts(struct phy_device *phydev)
		int phy_start_interrupts(struct phy_device *phydev)
		{
		atomic_set(&phydev->irq_disable, 0);
		if (request_irq(phydev->irq, phy_interrupt, 0, "phy_interrupt",
		if (request_irq(phydev->irq, phy_interrupt,
		IRQF_SHARED,
		"phy_interrupt",
		phydev) < 0) {
		pr_warn("%s: Can't get IRQ %d (PHY)\n",
		phydev->mdio.bus->name, phydev->irq);