target/linux/brcm2708/patches-4.4/0230-add-smsc95xx-packetsize-module_param.patch

   1 From 3cea4c3fef10a33547949610d9a81ac9950b5be9 Mon Sep 17 00:00:00 2001
   2 From: Sam Nazarko <email@samnazarko.co.uk>
   3 Date: Fri, 1 Apr 2016 17:27:21 +0100
   4 Subject: [PATCH 230/232] add smsc95xx packetsize module_param
   5
   6 Signed-off-by: Sam Nazarko <email@samnazarko.co.uk>
   7 ---
   8  drivers/net/usb/smsc95xx.c | 14 +++++++++-----
   9  1 file changed, 9 insertions(+), 5 deletions(-)
  10
  11 --- a/drivers/net/usb/smsc95xx.c
  12 +++ b/drivers/net/usb/smsc95xx.c
  13 @@ -83,6 +83,10 @@ static char *macaddr = ":";
  14  module_param(macaddr, charp, 0);
  15  MODULE_PARM_DESC(macaddr, "MAC address");
  16
  17 +static int packetsize = 0;
  18 +module_param(packetsize, int, 0644);
  19 +MODULE_PARM_DESC(packetsize, "Override the RX URB packet size");
  20 +
  21  static int __must_check __smsc95xx_read_reg(struct usbnet *dev, u32 index,
  22                                             u32 *data, int in_pm)
  23  {
  24 @@ -1006,13 +1010,13 @@ static int smsc95xx_reset(struct usbnet
  25
  26         if (!turbo_mode) {
  27                 burst_cap = 0;
  28 -               dev->rx_urb_size = MAX_SINGLE_PACKET_SIZE;
  29 +               dev->rx_urb_size = packetsize ? packetsize : MAX_SINGLE_PACKET_SIZE;
  30         } else if (dev->udev->speed == USB_SPEED_HIGH) {
  31 -               burst_cap = DEFAULT_HS_BURST_CAP_SIZE / HS_USB_PKT_SIZE;
  32 -               dev->rx_urb_size = DEFAULT_HS_BURST_CAP_SIZE;
  33 +               dev->rx_urb_size = packetsize ? packetsize : DEFAULT_HS_BURST_CAP_SIZE;
  34 +               burst_cap = dev->rx_urb_size / HS_USB_PKT_SIZE;
  35         } else {
  36 -               burst_cap = DEFAULT_FS_BURST_CAP_SIZE / FS_USB_PKT_SIZE;
  37 -               dev->rx_urb_size = DEFAULT_FS_BURST_CAP_SIZE;
  38 +               dev->rx_urb_size = packetsize ? packetsize : DEFAULT_FS_BURST_CAP_SIZE;
  39 +               burst_cap = dev->rx_urb_size / FS_USB_PKT_SIZE;
  40         }
  41
  42         netif_dbg(dev, ifup, dev->net, "rx_urb_size=%ld\n",