From: Linas Vepstas <linas@austin.ibm.com>
Date: Wed, 13 Dec 2006 21:18:52 +0000 (-0600)
Subject: Spidernet RX Refill
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=80dab7c7e5b7c4e53e9423c22375bfd9cbf7f2c3;p=GitHub%2FLineageOS%2Fandroid_kernel_samsung_universal7580.git

Spidernet RX Refill

The invocation of the rx ring refill routine is haphazard,
it can be called from a central location.

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>
---

diff --git a/drivers/net/spider_net.c b/drivers/net/spider_net.c
index 32a45859dfd..f5874123919 100644
--- a/drivers/net/spider_net.c
+++ b/drivers/net/spider_net.c
@@ -980,17 +980,11 @@ spider_net_decode_one_descr(struct spider_net_card *card)
 
 	status = spider_net_get_descr_status(descr);
 
-	/* nothing in the descriptor yet */
-	if (status == SPIDER_NET_DESCR_CARDOWNED)
+	/* Nothing in the descriptor, or ring must be empty */
+	if ((status == SPIDER_NET_DESCR_CARDOWNED) ||
+	    (status == SPIDER_NET_DESCR_NOT_IN_USE))
 		return 0;
 
-	if (status == SPIDER_NET_DESCR_NOT_IN_USE) {
-		/* not initialized yet, the ring must be empty */
-		spider_net_refill_rx_chain(card);
-		spider_net_enable_rxdmac(card);
-		return 0;
-	}
-
 	/* descriptor definitively used -- move on tail */
 	chain->tail = descr->next;
 
@@ -1074,6 +1068,7 @@ spider_net_poll(struct net_device *netdev, int *budget)
 	netdev->quota -= packets_done;
 	*budget -= packets_done;
 	spider_net_refill_rx_chain(card);
+	spider_net_enable_rxdmac(card);
 
 	/* if all packets are in the stack, enable interrupts and return 0 */
 	/* if not, return 1 */