[PATCH 4.4 62/74] lan78xx: Fix failure in USB Full Speed

From: Greg Kroah-Hartman
Date: Mon Jan 29 2018 - 16:05:47 EST


4.4-stable review patch. If anyone has any objections, please let me know.

------------------

From: Yuiko Oshino <yuiko.oshino@xxxxxxxxxxxxx>


[ Upstream commit a5b1379afbfabf91e3a689e82ac619a7157336b3 ]

Fix initialize the uninitialized tx_qlen to an appropriate value when USB
Full Speed is used.

Fixes: 55d7de9de6c3 ("Microchip's LAN7800 family USB 2/3 to 10/100/1000 Ethernet device driver")
Signed-off-by: Yuiko Oshino <yuiko.oshino@xxxxxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/net/usb/lan78xx.c | 1 +
1 file changed, 1 insertion(+)

--- a/drivers/net/usb/lan78xx.c
+++ b/drivers/net/usb/lan78xx.c
@@ -1859,6 +1859,7 @@ static int lan78xx_reset(struct lan78xx_
buf = DEFAULT_BURST_CAP_SIZE / FS_USB_PKT_SIZE;
dev->rx_urb_size = DEFAULT_BURST_CAP_SIZE;
dev->rx_qlen = 4;
+ dev->tx_qlen = 4;
}

ret = lan78xx_write_reg(dev, BURST_CAP, buf);