From: Michael Chan <mchan@broadcom.com>
Date: Mon, 25 Apr 2005 22:14:32 +0000 (-0700)
Subject: [TG3]: Refresh hw index in tg3_rx()
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=52f6d697dc0f2c039e8413e780b0f45ddf8161fc;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git

[TG3]: Refresh hw index in tg3_rx()

This patch refreshes the hw rx producer in tg3_rx() so that additional
work posted by the hardware can be processed.

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/drivers/net/tg3.c b/drivers/net/tg3.c
index e53c1dc58d08..92b0e4975135 100644
--- a/drivers/net/tg3.c
+++ b/drivers/net/tg3.c
@@ -2802,6 +2802,12 @@ next_pkt:
 next_pkt_nopost:
 		sw_idx++;
 		sw_idx %= TG3_RX_RCB_RING_SIZE(tp);
+
+		/* Refresh hw_idx to see if there is new work */
+		if (sw_idx == hw_idx) {
+			hw_idx = tp->hw_status->idx[0].rx_producer;
+			rmb();
+		}
 	}
 
 	/* ACK the status ring. */