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Date: Tue, 10 May 2016 17:42:26 +0800 From: <shh.xie@...il.com> To: <netdev@...r.kernel.org>, <davem@...emloft.net>, <f.fainelli@...il.com> CC: Shaohui Xie <Shaohui.Xie@....com> Subject: [PATCH] net: phylib: fix interrupts re-enablement in phy_start From: Shaohui Xie <Shaohui.Xie@....com> If phy was suspended and is starting, current driver always enable phy's interrupts, if phy works in polling, phy can raise unexpected interrupt which will not be handled, the interrupt will block system enter suspend again. So interrupts should only be re-enabled if phy works in interrupt. Signed-off-by: Shaohui Xie <Shaohui.Xie@....com> --- drivers/net/phy/phy.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/drivers/net/phy/phy.c b/drivers/net/phy/phy.c index 6f221c8..baa5ecb 100644 --- a/drivers/net/phy/phy.c +++ b/drivers/net/phy/phy.c @@ -871,9 +871,11 @@ void phy_start(struct phy_device *phydev) break; case PHY_HALTED: /* make sure interrupts are re-enabled for the PHY */ - err = phy_enable_interrupts(phydev); - if (err < 0) - break; + if (phydev->irq != PHY_POLL) { + err = phy_enable_interrupts(phydev); + if (err < 0) + break; + } phydev->state = PHY_RESUMING; do_resume = true; -- 2.1.0.27.g96db324
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