From: Vasundhara Volam vasundhara-v.volam@broadcom.com
[ Upstream commit a9b952d267e59a3b405e644930f46d252cea7122 ]
MTU changes may affect the number of IRQs so we must call bnxt_close_nic()/bnxt_open_nic() with the irq_re_init parameter set to true. The reason is that a larger MTU may require aggregation rings not needed with smaller MTU. We may not be able to allocate the required number of aggregation rings and so we reduce the number of channels which will change the number of IRQs. Without this patch, it may crash eventually in pci_disable_msix() when the IRQs are not properly unwound.
Fixes: c0c050c58d84 ("bnxt_en: New Broadcom ethernet driver.") Signed-off-by: Vasundhara Volam vasundhara-v.volam@broadcom.com Signed-off-by: Michael Chan michael.chan@broadcom.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Yang Yingliang yangyingliang@huawei.com --- drivers/net/ethernet/broadcom/bnxt/bnxt.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c index c19d0ea..911cea2 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c @@ -8097,13 +8097,13 @@ static int bnxt_change_mtu(struct net_device *dev, int new_mtu) struct bnxt *bp = netdev_priv(dev);
if (netif_running(dev)) - bnxt_close_nic(bp, false, false); + bnxt_close_nic(bp, true, false);
dev->mtu = new_mtu; bnxt_set_ring_params(bp);
if (netif_running(dev)) - return bnxt_open_nic(bp, false, false); + return bnxt_open_nic(bp, true, false);
return 0; }