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Date: Fri, 21 Mar 2014 05:09:55 -0700 From: Jeff Kirsher <jeffrey.t.kirsher@...el.com> To: davem@...emloft.net Cc: Mark Rustad <mark.d.rustad@...el.com>, netdev@...r.kernel.org, gospo@...hat.com, sassmann@...hat.com, Jeff Kirsher <jeffrey.t.kirsher@...el.com> Subject: [net-next 05/16] ixgbe: Break recursion in case of removal From: Mark Rustad <mark.d.rustad@...el.com> When an adapter is removed and registers all read as all one's, an infinite recursion can happen between ixgbe_clear_vmdq_generic and ixgbe_clear_rar_generic. Adding a check for removal breaks this recursion. Signed-off-by: Mark Rustad <mark.d.rustad@...el.com> Tested-by: Phil Schmitt <phillip.j.schmitt@...el.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@...el.com> --- drivers/net/ethernet/intel/ixgbe/ixgbe_common.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_common.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_common.c index 911b711..24fba39 100644 --- a/drivers/net/ethernet/intel/ixgbe/ixgbe_common.c +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_common.c @@ -2913,6 +2913,9 @@ s32 ixgbe_clear_vmdq_generic(struct ixgbe_hw *hw, u32 rar, u32 vmdq) mpsar_lo = IXGBE_READ_REG(hw, IXGBE_MPSAR_LO(rar)); mpsar_hi = IXGBE_READ_REG(hw, IXGBE_MPSAR_HI(rar)); + if (ixgbe_removed(hw->hw_addr)) + goto done; + if (!mpsar_lo && !mpsar_hi) goto done; -- 1.8.3.1 -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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