[PATCH 4.9 01/33] 8139too: Use disable_irq_nosync() in rtl8139_poll_controller()

From: Greg Kroah-Hartman
Date: Fri May 18 2018 - 03:25:05 EST


4.9-stable review patch. If anyone has any objections, please let me know.

------------------

From: Ingo Molnar <mingo@xxxxxxx>

[ Upstream commit af3e0fcf78879f718c5f73df0814951bd7057d34 ]

Use disable_irq_nosync() instead of disable_irq() as this might be
called in atomic context with netpoll.

Signed-off-by: Ingo Molnar <mingo@xxxxxxx>
Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@xxxxxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/net/ethernet/realtek/8139too.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/net/ethernet/realtek/8139too.c
+++ b/drivers/net/ethernet/realtek/8139too.c
@@ -2233,7 +2233,7 @@ static void rtl8139_poll_controller(stru
struct rtl8139_private *tp = netdev_priv(dev);
const int irq = tp->pci_dev->irq;

- disable_irq(irq);
+ disable_irq_nosync(irq);
rtl8139_interrupt(irq, dev);
enable_irq(irq);
}