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 <stable@xxxxxxxxxxxxxxx> know about it.
>From foo@baz Wed Sep 21 12:45:10 CEST 2016
From: Xander Huff <xander.huff@xxxxxx>
Date: Wed, 24 Aug 2016 16:47:53 -0500
Subject: Revert "phy: IRQ cannot be shared"
From: Xander Huff <xander.huff@xxxxxx>
[ 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..."
Signed-off-by: Xander Huff <xander.huff@xxxxxx>
Signed-off-by: Nathan Sullivan <nathan.sullivan@xxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/net/phy/phy.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
--- a/drivers/net/phy/phy.c
+++ b/drivers/net/phy/phy.c
@@ -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 xander.huff@xxxxxx are
queue-4.4/revert-phy-irq-cannot-be-shared.patch
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