From 1b00c6c064302354fce71d7c363945fe9e967f7c Mon Sep 17 00:00:00 2001 From: Jacob Keller Date: Fri, 3 Jun 2016 15:42:11 -0700 Subject: [PATCH] fm10k: no need to continue in fm10k_down if __FM10K_DOWN already set Return early from fm10k_down() when we are already down, since that means another thread is either already finished or has started going down, so shouldn't conflict with them. Signed-off-by: Jacob Keller Tested-by: Krishneil Singh Signed-off-by: Jeff Kirsher --- drivers/net/ethernet/intel/fm10k/fm10k_pci.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/intel/fm10k/fm10k_pci.c b/drivers/net/ethernet/intel/fm10k/fm10k_pci.c index e05aca9..610c313 100644 --- a/drivers/net/ethernet/intel/fm10k/fm10k_pci.c +++ b/drivers/net/ethernet/intel/fm10k/fm10k_pci.c @@ -1601,7 +1601,8 @@ void fm10k_down(struct fm10k_intfc *interface) int err; /* signal that we are down to the interrupt handler and service task */ - set_bit(__FM10K_DOWN, &interface->state); + if (test_and_set_bit(__FM10K_DOWN, &interface->state)) + return; /* call carrier off first to avoid false dev_watchdog timeouts */ netif_carrier_off(netdev); -- 2.7.4