linux-kernel - [PATCH net-next v2 2/2] r8152: adjust rtl_start

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Message-ID: <1394712342-15778-97-Taiwan-albertk@realtek.com>
Date:	Wed, 19 Nov 2014 13:20:42 +0800
From:	Hayes Wang <hayeswang@...ltek.com>
To:	<netdev@...r.kernel.org>
CC:	<nic_swsd@...ltek.com>, <linux-kernel@...r.kernel.org>,
	<linux-usb@...r.kernel.org>, Hayes Wang <hayeswang@...ltek.com>
Subject: [PATCH net-next v2 2/2] r8152: adjust rtl_start_rx

If there is a error for r8152_submit_rx(), add the remaining rx
buffers to the list. Then the remaining rx buffers could be
submitted later.

Signed-off-by: Hayes Wang <hayeswang@...ltek.com>
---
 drivers/net/usb/r8152.c | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/drivers/net/usb/r8152.c b/drivers/net/usb/r8152.c
index df0868b..c7acadd 100644
--- a/drivers/net/usb/r8152.c
+++ b/drivers/net/usb/r8152.c
@@ -2002,6 +2002,25 @@ static int rtl_start_rx(struct r8152 *tp)
 			break;
 	}
 
+	if (ret && ++i < RTL8152_MAX_RX) {
+		struct list_head rx_queue;
+		unsigned long flags;
+
+		INIT_LIST_HEAD(&rx_queue);
+
+		do {
+			struct rx_agg *agg = &tp->rx_info[i++];
+			struct urb *urb = agg->urb;
+
+			urb->actual_length = 0;
+			list_add_tail(&agg->list, &rx_queue);
+		} while (i < RTL8152_MAX_RX);
+
+		spin_lock_irqsave(&tp->rx_lock, flags);
+		list_splice_tail(&rx_queue, &tp->rx_done);
+		spin_unlock_irqrestore(&tp->rx_lock, flags);
+	}
+
 	return ret;
 }
 
-- 
1.9.3

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