netdev - [PATCH 10/14] Spidernet RX Chain tail

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Message-ID: <20061213212059.GJ1915@austin.ibm.com>
Date:	Wed, 13 Dec 2006 15:20:59 -0600
From:	linas@...tin.ibm.com (Linas Vepstas)
To:	Andrew Morton <akpm@...l.org>
Cc:	netdev@...r.kernel.org, linuxppc-dev@...abs.org, jgarzik@...ox.com,
	Christoph Hellwig <hch@...radead.org>,
	Ishizaki Kou <kou.ishizaki@...hiba.co.jp>,
	Jens Osterkamp <Jens.Osterkamp@....de>,
	James K Lewis <jim@...ewis.com>,
	Arnd Bergmann <arnd@...db.de>
Subject: [PATCH 10/14] Spidernet RX Chain tail


Tell the hardware the location of the rx ring tail.
More punctuation cleanup.

Signed-off-by: Linas Vepstas <linas@...tin.ibm.com>
Cc: James K Lewis <jklewis@...ibm.com>
Cc: Arnd Bergmann <arnd@...db.de>

----
 drivers/net/spider_net.c |   15 ++++++++-------
 1 file changed, 8 insertions(+), 7 deletions(-)

Index: linux-2.6.19-git7/drivers/net/spider_net.c
===================================================================
--- linux-2.6.19-git7.orig/drivers/net/spider_net.c	2006-12-13 14:28:15.000000000 -0600
+++ linux-2.6.19-git7/drivers/net/spider_net.c	2006-12-13 14:28:19.000000000 -0600
@@ -487,10 +487,10 @@ spider_net_refill_rx_chain(struct spider
 }
 
 /**
- * spider_net_alloc_rx_skbs - allocates rx skbs in rx descriptor chains
+ * spider_net_alloc_rx_skbs - Allocates rx skbs in rx descriptor chains
  * @card: card structure
  *
- * returns 0 on success, <0 on failure
+ * Returns 0 on success, <0 on failure.
  */
 static int
 spider_net_alloc_rx_skbs(struct spider_net_card *card)
@@ -501,17 +501,18 @@ spider_net_alloc_rx_skbs(struct spider_n
 	result = -ENOMEM;
 
 	chain = &card->rx_chain;
-	/* put at least one buffer into the chain. if this fails,
-	 * we've got a problem. if not, spider_net_refill_rx_chain
-	 * will do the rest at the end of this function */
+	/* Put at least one buffer into the chain. if this fails,
+	 * we've got a problem. If not, spider_net_refill_rx_chain
+	 * will do the rest at the end of this function. */
 	if (spider_net_prepare_rx_descr(card, chain->head))
 		goto error;
 	else
 		chain->head = chain->head->next;
 
-	/* this will allocate the rest of the rx buffers; if not, it's
-	 * business as usual later on */
+	/* This will allocate the rest of the rx buffers;
+	 * if not, it's business as usual later on. */
 	spider_net_refill_rx_chain(card);
+	spider_net_enable_rxchtails(card);
 	spider_net_enable_rxdmac(card);
 	return 0;
 
-
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