diff --git a/drivers/net/usb/lan78xx.c b/drivers/net/usb/lan78xx.c index 68d0aec53f3aded6b3142db9d6c37ba4b68de1f0..e5bd18aa1cfa1d45b728650df03155433c84f591 100644 --- a/drivers/net/usb/lan78xx.c +++ b/drivers/net/usb/lan78xx.c @@ -434,6 +434,11 @@ static bool enable_tso; module_param(enable_tso, bool, 0644); MODULE_PARM_DESC(enable_tso, "Enables TCP segmentation offload"); +#define INT_URB_MICROFRAMES_PER_MS 8 +static int int_urb_interval_ms = 8; +module_param(int_urb_interval_ms, int, 0); +MODULE_PARM_DESC(int_urb_interval_ms, "Override usb interrupt urb interval"); + static int lan78xx_read_reg(struct lan78xx_net *dev, u32 index, u32 *data) { u32 *buf = kmalloc(sizeof(u32), GFP_KERNEL); @@ -3760,7 +3765,13 @@ static int lan78xx_probe(struct usb_interface *intf, netdev->max_mtu = MAX_SINGLE_PACKET_SIZE; netif_set_gso_max_size(netdev, MAX_SINGLE_PACKET_SIZE - MAX_HEADER); - period = ep_intr->desc.bInterval; + if (int_urb_interval_ms <= 0) + period = ep_intr->desc.bInterval; + else + period = int_urb_interval_ms * INT_URB_MICROFRAMES_PER_MS; + + netif_notice(dev, probe, netdev, "int urb period %d\n", period); + maxp = usb_maxpacket(dev->udev, dev->pipe_intr, 0); buf = kmalloc(maxp, GFP_KERNEL); if (buf) {