s2io: add PCI error recovery support

s2io cleanup suggestions, per discussion on mailing lists.
Signed-off-by: NLinas Vepstas <linas@austin.ibm.com>
Signed-off-by: NJeff Garzik <jeff@garzik.org>

drivers/net/s2io.c

@@ -3970,7 +3970,6 @@ static int s2io_close(struct net_device *dev)
 	/* Reset card, kill tasklet and free Tx and Rx buffers. */
 	s2io_card_down(sp);
 
-	sp->device_close_flag = TRUE;	/* Device is shut down. */
 	return 0;
 }
 
@@ -8053,7 +8052,6 @@ static pci_ers_result_t s2io_io_error_detected(struct pci_dev *pdev,
 	if (netif_running(netdev)) {
 		/* Bring down the card, while avoiding PCI I/O */
 		do_s2io_card_down(sp, 0);
-		sp->device_close_flag = TRUE;	/* Device is shut down. */
 	}
 	pci_disable_device(pdev);
 

drivers/net/s2io.h

@@ -794,7 +794,6 @@ struct s2io_nic {
 
 	struct net_device_stats stats;
 	int high_dma_flag;
-	int device_close_flag;
 	int device_enabled_once;
 
 	char name[60];