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Commit 52adbb69 authored by Bart Van Assche's avatar Bart Van Assche Committed by Doug Ledford
Browse files

IB/nes: Fix a race condition in nes_inetaddr_event() 



This patch has been compile-tested only.

Signed-off-by: default avatarBart Van Assche <bart.vanassche@wdc.com>
Cc: Faisal Latif <faisal.latif@intel.com>
Acked-by: default avatarFaisal Latif <fasial.latif@intel.com>
Signed-off-by: default avatarDoug Ledford <dledford@redhat.com>
parent fd9e04d6

drivers/infiniband/hw/nes/nes.c

+9 −4
Original line number Diff line number Diff line
@@ -178,11 +178,16 @@ static int nes_inetaddr_event(struct notifier_block *notifier, 
					/* fall through */

				case NETDEV_CHANGEADDR:

					/* Add the address to the IP table */

					if (upper_dev)

						nesvnic->local_ipaddr =

							((struct in_device *)upper_dev->ip_ptr)->ifa_list->ifa_address;

					else

					if (upper_dev) {

						struct in_device *in;



						rcu_read_lock();

						in = __in_dev_get_rcu(upper_dev);

						nesvnic->local_ipaddr = in->ifa_list->ifa_address;

						rcu_read_unlock();

					} else {

						nesvnic->local_ipaddr = ifa->ifa_address;

					}



					nes_write_indexed(nesdev,

							NES_IDX_DST_IP_ADDR+(0x10*PCI_FUNC(nesdev->pcidev->devfn)),