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authorLinas Vepstas <linas@austin.ibm.com>2006-12-13 15:17:39 -0600
committerJeff Garzik <jeff@garzik.org>2007-02-05 16:58:44 -0500
commit7f7223b8f11f9857fba1dbd5474882219a7ae6e9 (patch)
tree0a71c86067c95d6f9567f54b7afd2ce5710d476d /drivers/net
parent366684bd0d6bc5b224fc798675b9a85eb9279227 (diff)
Spidernet Cleanup return codes
Simplify the somewhat convoluted use of return codes in the rx buffer handling. 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>
Diffstat (limited to 'drivers/net')
-rw-r--r--drivers/net/spider_net.c32
1 files changed, 12 insertions, 20 deletions
diff --git a/drivers/net/spider_net.c b/drivers/net/spider_net.c
index 4c26b9a5683e..32a45859dfdd 100644
--- a/drivers/net/spider_net.c
+++ b/drivers/net/spider_net.c
@@ -911,12 +911,10 @@ spider_net_do_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
* @descr: descriptor to process
* @card: card structure
*
- * returns 1 on success, 0 if no packet was passed to the stack
- *
* Fills out skb structure and passes the data to the stack.
* The descriptor state is not changed.
*/
-static int
+static void
spider_net_pass_skb_up(struct spider_net_descr *descr,
struct spider_net_card *card)
{
@@ -961,8 +959,6 @@ spider_net_pass_skb_up(struct spider_net_descr *descr,
/* update netdevice statistics */
card->netdev_stats.rx_packets++;
card->netdev_stats.rx_bytes += skb->len;
-
- return 1;
}
/**
@@ -981,7 +977,6 @@ spider_net_decode_one_descr(struct spider_net_card *card)
struct spider_net_descr_chain *chain = &card->rx_chain;
struct spider_net_descr *descr = chain->tail;
int status;
- int result;
status = spider_net_get_descr_status(descr);
@@ -999,8 +994,6 @@ spider_net_decode_one_descr(struct spider_net_card *card)
/* descriptor definitively used -- move on tail */
chain->tail = descr->next;
- result = 0;
-
/* unmap descriptor */
pci_unmap_single(card->pdev, descr->buf_addr,
SPIDER_NET_MAX_FRAME, PCI_DMA_FROMDEVICE);
@@ -1012,8 +1005,7 @@ spider_net_decode_one_descr(struct spider_net_card *card)
pr_err("%s: dropping RX descriptor with state %d\n",
card->netdev->name, status);
card->netdev_stats.rx_dropped++;
- dev_kfree_skb_irq(descr->skb);
- goto refill;
+ goto bad_desc;
}
if ( (status != SPIDER_NET_DESCR_COMPLETE) &&
@@ -1022,8 +1014,7 @@ spider_net_decode_one_descr(struct spider_net_card *card)
pr_err("%s: RX descriptor with unkown state %d\n",
card->netdev->name, status);
card->spider_stats.rx_desc_unk_state++;
- dev_kfree_skb_irq(descr->skb);
- goto refill;
+ goto bad_desc;
}
/* The cases we'll throw away the packet immediately */
@@ -1033,17 +1024,18 @@ spider_net_decode_one_descr(struct spider_net_card *card)
"data_status=x%08x, data_error=x%08x\n",
card->netdev->name,
descr->data_status, descr->data_error);
- card->spider_stats.rx_desc_error++;
- dev_kfree_skb_irq(descr->skb);
- goto refill;
+ goto bad_desc;
}
- /* ok, we've got a packet in descr */
- result = spider_net_pass_skb_up(descr, card);
-refill:
- /* change the descriptor state: */
+ /* Ok, we've got a packet in descr */
+ spider_net_pass_skb_up(descr, card);
descr->dmac_cmd_status = SPIDER_NET_DESCR_NOT_IN_USE;
- return result;
+ return 1;
+
+bad_desc:
+ dev_kfree_skb_irq(descr->skb);
+ descr->dmac_cmd_status = SPIDER_NET_DESCR_NOT_IN_USE;
+ return 0;
}
/**