[PATCH] powerpc/cell spidernet release all descrs
Linas Vepstas [Tue, 10 Oct 2006 21:22:29 +0000 (16:22 -0500)]
Bugfix: rx descriptor release function fails to visit
the last entry while walking receive descriptor ring.

Signed-off-by: Linas Vepstas <linas@austin.ibm.com>
Cc: James K Lewis <jklewis@us.ibm.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

drivers/net/spider_net.c

index a26dd1c..418138d 100644 (file)
@@ -358,7 +358,7 @@ spider_net_free_rx_chain_contents(struct spider_net_card *card)
        struct spider_net_descr *descr;
 
        descr = card->rx_chain.head;
-       while (descr->next != card->rx_chain.head) {
+       do {
                if (descr->skb) {
                        dev_kfree_skb(descr->skb);
                        pci_unmap_single(card->pdev, descr->buf_addr,
@@ -366,7 +366,7 @@ spider_net_free_rx_chain_contents(struct spider_net_card *card)
                                         PCI_DMA_BIDIRECTIONAL);
                }
                descr = descr->next;
-       }
+       } while (descr != card->rx_chain.head);
 }
 
 /**