From: juhosg <juhosg@3c298f89-4303-0410-b956-a3cf2f4a3e73>
Date: Sun, 26 Feb 2012 10:54:13 +0000 (+0000)
Subject: ramips: don't read RAMIPS_RX_CALC_IDX0 register in the loop
X-Git-Url: https://git.rohieb.name/openwrt.git/commitdiff_plain/c369186781ad419dc837eb5b1dda1bf139fbb901?hp=bcc8770afa7f25036c8380a572b08aa51a753da6

ramips: don't read RAMIPS_RX_CALC_IDX0 register in the loop

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@30733 3c298f89-4303-0410-b956-a3cf2f4a3e73
---

diff --git a/target/linux/ramips/files/drivers/net/ethernet/ramips/ramips_main.c b/target/linux/ramips/files/drivers/net/ethernet/ramips/ramips_main.c
index 60001e3bc..beceb9441 100644
--- a/target/linux/ramips/files/drivers/net/ethernet/ramips/ramips_main.c
+++ b/target/linux/ramips/files/drivers/net/ethernet/ramips/ramips_main.c
@@ -717,13 +717,15 @@ ramips_eth_rx_hw(unsigned long ptr)
 	int rx;
 	int max_rx = 16;
 
+	rx = ramips_fe_rr(RAMIPS_RX_CALC_IDX0);
+
 	while (max_rx) {
 		struct raeth_rx_info *rxi;
 		struct ramips_rx_dma *rxd;
 		struct sk_buff *rx_skb, *new_skb;
 		int pktlen;
 
-		rx = (ramips_fe_rr(RAMIPS_RX_CALC_IDX0) + 1) % NUM_RX_DESC;
+		rx = (rx + 1) % NUM_RX_DESC;
 
 		rxi = &re->rx_info[rx];
 		rxd = rxi->rx_desc;