From: Anupam Chanda Date: Sun, 21 Nov 2010 17:54:21 +0000 (-0800) Subject: e1000: fix screaming IRQ X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=ab08853fab2093e5c6f5de56827a4c93dce4b055;p=GitHub%2FLineageOS%2Fandroid_kernel_samsung_universal7580.git e1000: fix screaming IRQ VMWare reports that the e1000 driver has a bug when bringing down the interface, such that interrupts are not disabled in the hardware but the driver stops reporting that it consumed the interrupt. The fix is to set the driver's "down" flag later in the routine, after all the timers and such have exited, preventing the interrupt handler from being called and exiting early without handling the interrupt. CC: Anupam Chanda CC: stable kernel Signed-off-by: Jesse Brandeburg Signed-off-by: Jeff Kirsher Signed-off-by: David S. Miller --- diff --git a/drivers/net/e1000/e1000_main.c b/drivers/net/e1000/e1000_main.c index 4686c3983fc..4d62f7bfa03 100644 --- a/drivers/net/e1000/e1000_main.c +++ b/drivers/net/e1000/e1000_main.c @@ -31,7 +31,7 @@ char e1000_driver_name[] = "e1000"; static char e1000_driver_string[] = "Intel(R) PRO/1000 Network Driver"; -#define DRV_VERSION "7.3.21-k6-NAPI" +#define DRV_VERSION "7.3.21-k8-NAPI" const char e1000_driver_version[] = DRV_VERSION; static const char e1000_copyright[] = "Copyright (c) 1999-2006 Intel Corporation."; @@ -485,9 +485,6 @@ void e1000_down(struct e1000_adapter *adapter) struct net_device *netdev = adapter->netdev; u32 rctl, tctl; - /* signal that we're down so the interrupt handler does not - * reschedule our watchdog timer */ - set_bit(__E1000_DOWN, &adapter->flags); /* disable receives in the hardware */ rctl = er32(RCTL); @@ -508,6 +505,13 @@ void e1000_down(struct e1000_adapter *adapter) e1000_irq_disable(adapter); + /* + * Setting DOWN must be after irq_disable to prevent + * a screaming interrupt. Setting DOWN also prevents + * timers and tasks from rescheduling. + */ + set_bit(__E1000_DOWN, &adapter->flags); + del_timer_sync(&adapter->tx_fifo_stall_timer); del_timer_sync(&adapter->watchdog_timer); del_timer_sync(&adapter->phy_info_timer);