Subject: [PATCH 20/21]: powerpc/cell spidernet release all descrs

From: [email-masked] (Linas Vepstas)
Date: Tue, 10 Oct 2006 16:22:29 -0500

Bugfix: rx descriptor release function fails to visit
the last entry while walking receive descriptor ring.

Signed-off-by: Linas Vepstas <[email-masked]>
Cc: James K Lewis <[email-masked]>
Cc: Arnd Bergmann <[email-masked]>

----
 drivers/net/spider_net.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

Index: linux-2.6.18-mm2/drivers/net/spider_net.c
===================================================================
--- linux-2.6.18-mm2.orig/drivers/net/spider_net.c	2006-10-10 13:37:40.000000000 -0500
+++ linux-2.6.18-mm2/drivers/net/spider_net.c	2006-10-10 13:40:56.000000000 -0500
@@ -358,7 +358,7 @@ spider_net_free_rx_chain_contents(struct
 	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
 					 PCI_DMA_BIDIRECTIONAL);
 		}
 		descr = descr->next;
-	}
+	} while (descr != card->rx_chain.head);
 }
 
 /**