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Diffstat (limited to 'target/linux/bcm27xx/patches-5.4/950-0132-lan78xx-Debounce-link-events-to-minimize-poll-storm.patch')
-rw-r--r--target/linux/bcm27xx/patches-5.4/950-0132-lan78xx-Debounce-link-events-to-minimize-poll-storm.patch43
1 files changed, 0 insertions, 43 deletions
diff --git a/target/linux/bcm27xx/patches-5.4/950-0132-lan78xx-Debounce-link-events-to-minimize-poll-storm.patch b/target/linux/bcm27xx/patches-5.4/950-0132-lan78xx-Debounce-link-events-to-minimize-poll-storm.patch
deleted file mode 100644
index 19ea77e99c..0000000000
--- a/target/linux/bcm27xx/patches-5.4/950-0132-lan78xx-Debounce-link-events-to-minimize-poll-storm.patch
+++ /dev/null
@@ -1,43 +0,0 @@
-From 20c9da8c7bab3bbc18e42ee0b2659c4b43aabad7 Mon Sep 17 00:00:00 2001
-From: Joshua Emele <jemele@acm.org>
-Date: Wed, 7 Nov 2018 16:07:40 -0800
-Subject: [PATCH] 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
-@@ -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);
-@@ -3776,7 +3781,12 @@ static int lan78xx_probe(struct usb_inte
- 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) {