From: Anjali Singhai Jain Date: Wed, 4 Jun 2014 01:23:26 +0000 (+0000) Subject: i40e: Bypass timeout recovery level 0 so as to not cause MDD X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=327fe04bfb32642eee237e1cc1eaef16d6a4a0f5;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git i40e: Bypass timeout recovery level 0 so as to not cause MDD When a Tx hang happens, usually the Tx queue disable fails. At this point if we try to recover by a VSI reinit the HW gets unhappy and we get a Malicious Driver Detect (MDD) event. HW expects a PF reset if a queue disable fails, if we don't do a PF reset and restart the queue we get an MDD. This patch makes sure we do a PF reset on Tx hang and that way we avoid any MDD because of Tx queue disable failure. Change-ID: I665ab6223577c788da857ee2132e733dc9a451e4 Signed-off-by: Anjali Singhai Jain Signed-off-by: Jeff Kirsher --- diff --git a/drivers/net/ethernet/intel/i40e/i40e_main.c b/drivers/net/ethernet/intel/i40e/i40e_main.c index e2dbe0427cdf..50f9ab72c95f 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_main.c +++ b/drivers/net/ethernet/intel/i40e/i40e_main.c @@ -278,7 +278,7 @@ static void i40e_tx_timeout(struct net_device *netdev) pf->tx_timeout_count++; if (time_after(jiffies, (pf->tx_timeout_last_recovery + HZ*20))) - pf->tx_timeout_recovery_level = 0; + pf->tx_timeout_recovery_level = 1; pf->tx_timeout_last_recovery = jiffies; netdev_info(netdev, "tx_timeout recovery level %d\n", pf->tx_timeout_recovery_level); @@ -6826,6 +6826,8 @@ static int i40e_sw_init(struct i40e_pf *pf) pf->irq_pile->num_entries = pf->hw.func_caps.num_msix_vectors; pf->irq_pile->search_hint = 0; + pf->tx_timeout_recovery_level = 1; + mutex_init(&pf->switch_mutex); sw_init_done: