From: Sam Nazarko <email@samnazarko.co.uk>
Date: Fri, 1 Apr 2016 16:27:21 +0000 (+0100)
Subject: smsc95xx: Experimental: Enable turbo_mode and packetsize=2560 by default
X-Git-Tag: archive/raspbian/4.9.51-1+rpi1~5^2~530
X-Git-Url: https://dgit.raspbian.org/?a=commitdiff_plain;h=df16d1cbfdc54ecea51471226f98fc5ea63bc7f6;p=linux-4.9.git

smsc95xx: Experimental: Enable turbo_mode and packetsize=2560 by default

See: http://forum.kodi.tv/showthread.php?tid=285288
---

diff --git a/drivers/net/usb/smsc95xx.c b/drivers/net/usb/smsc95xx.c
index b77935bded8c..693f163684de 100644
--- a/drivers/net/usb/smsc95xx.c
+++ b/drivers/net/usb/smsc95xx.c
@@ -86,6 +86,10 @@ static bool truesize_mode = false;
 module_param(truesize_mode, bool, 0644);
 MODULE_PARM_DESC(truesize_mode, "Report larger truesize value");
 
+static int packetsize = 2560;
+module_param(packetsize, int, 0644);
+MODULE_PARM_DESC(packetsize, "Override the RX URB packet size");
+
 static int __must_check __smsc95xx_read_reg(struct usbnet *dev, u32 index,
 					    u32 *data, int in_pm)
 {
@@ -1106,13 +1110,13 @@ static int smsc95xx_reset(struct usbnet *dev)
 
 	if (!turbo_mode) {
 		burst_cap = 0;
-		dev->rx_urb_size = MAX_SINGLE_PACKET_SIZE;
+		dev->rx_urb_size = packetsize ? packetsize : MAX_SINGLE_PACKET_SIZE;
 	} else if (dev->udev->speed == USB_SPEED_HIGH) {
-		burst_cap = DEFAULT_HS_BURST_CAP_SIZE / HS_USB_PKT_SIZE;
-		dev->rx_urb_size = DEFAULT_HS_BURST_CAP_SIZE;
+		dev->rx_urb_size = packetsize ? packetsize : DEFAULT_HS_BURST_CAP_SIZE;
+		burst_cap = dev->rx_urb_size / HS_USB_PKT_SIZE;
 	} else {
-		burst_cap = DEFAULT_FS_BURST_CAP_SIZE / FS_USB_PKT_SIZE;
-		dev->rx_urb_size = DEFAULT_FS_BURST_CAP_SIZE;
+		dev->rx_urb_size = packetsize ? packetsize : DEFAULT_FS_BURST_CAP_SIZE;
+		burst_cap = dev->rx_urb_size / FS_USB_PKT_SIZE;
 	}
 
 	netif_dbg(dev, ifup, dev->net, "rx_urb_size=%ld\n",