[PATCH] powerpc/cell spidernet release all descrs

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>

1 files changed, 2 insertions, 2 deletions

diff --git a/drivers/net/spider_net.c b/drivers/net/spider_net.c
index a26dd1c63189..418138dd6c68 100644
--- a/drivers/net/spider_net.c
+++ b/drivers/net/spider_net.c
@@ -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);
 }
 
 /**