mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-21 14:37:57 +00:00
e29500eb84
Refreshed all patches. Altered patches: - 080-sata_support.patch Remove upstreamed: - 034-v4.20-MIPS-BCM47XX-Enable-USB-power-on-Netgear-WNDR3400v3.patch - 001-4.21-01-BCM63XX-fix-switch-core-reset-on-BCM6368.patch - 073-qcom-ipq4019-fix-cpu0-s-qcom-saw2-reg-value.patch Compile-tested on: cns3xxx Runtime-tested on: cns3xxx Signed-off-by: Koen Vandeputte <koen.vandeputte@ncentric.com>
45 lines
1.7 KiB
Diff
45 lines
1.7 KiB
Diff
From 020ee4d0d438b830ee40da8d9d3414de156a11e7 Mon Sep 17 00:00:00 2001
|
|
From: Joshua Emele <jemele@acm.org>
|
|
Date: Wed, 7 Nov 2018 16:07:40 -0800
|
|
Subject: [PATCH 298/806] lan78xx: Debounce link events to minimize poll storm
|
|
|
|
The bInterval is set to 4 (i.e. 8 microframes => 1ms) and the only bit
|
|
that the driver pays attention to is "link was reset". If there's a
|
|
flapping status bit in that endpoint data, (such as if PHY negotiation
|
|
needs a few tries to get a stable link) then polling at a slower rate
|
|
would act as a de-bounce.
|
|
|
|
See: https://github.com/raspberrypi/linux/issues/2447
|
|
---
|
|
drivers/net/usb/lan78xx.c | 12 +++++++++++-
|
|
1 file changed, 11 insertions(+), 1 deletion(-)
|
|
|
|
--- a/drivers/net/usb/lan78xx.c
|
|
+++ b/drivers/net/usb/lan78xx.c
|
|
@@ -448,6 +448,11 @@ 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);
|
|
@@ -3824,7 +3829,12 @@ static int lan78xx_probe(struct usb_inte
|
|
dev->pipe_intr = usb_rcvintpipe(dev->udev,
|
|
dev->ep_intr->desc.bEndpointAddress &
|
|
USB_ENDPOINT_NUMBER_MASK);
|
|
- period = dev->ep_intr->desc.bInterval;
|
|
+ if (int_urb_interval_ms <= 0)
|
|
+ period = dev->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);
|