netdev - [PATCH] phy: IRQ cannot be shared

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Message-Id: <201312202209.04333.sergei.shtylyov@cogentembedded.com>
Date:	Fri, 20 Dec 2013 22:09:04 +0300
From:	Sergei Shtylyov <sergei.shtylyov@...entembedded.com>
To:	netdev@...r.kernel.org
Subject: [PATCH] phy: IRQ cannot be shared

With the way PHY IRQ handler is implemented (all real handling being pushed to
the workqueue and returning IRQ_HANDLED all the time PHY is active), we cannot
really claim that PHY IRQ can be shared when calling request_irq().  

Signed-off-by: Sergei Shtylyov <sergei.shtylyov@...entembedded.com>

---
The patch is against DaveM's 'net.git' repo.
I recommend pushing it to the stable kernels as well.

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

Index: net/drivers/net/phy/phy.c
===================================================================
--- net.orig/drivers/net/phy/phy.c
+++ net/drivers/net/phy/phy.c
@@ -565,10 +565,8 @@ int phy_start_interrupts(struct phy_devi
 	int err = 0;
 
 	atomic_set(&phydev->irq_disable, 0);
-	if (request_irq(phydev->irq, phy_interrupt,
-				IRQF_SHARED,
-				"phy_interrupt",
-				phydev) < 0) {
+	if (request_irq(phydev->irq, phy_interrupt, 0, "phy_interrupt",
+			phydev) < 0) {
 		pr_warn("%s: Can't get IRQ %d (PHY)\n",
 			phydev->bus->name, phydev->irq);
 		phydev->irq = PHY_POLL;
--
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