This is a note to let you know that I've just added the patch titled
usbcore: don't log on consecutive debounce failures of the same port
to my usb git tree which can be found at
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git
in the usb-next branch.
The patch will show up in the next release of the linux-next tree
(usually sometime within the next 24 hours during the week.)
The patch will also be merged in the next major kernel release
during the merge window.
If you have any questions about this process, please let me know.
>From 5ee0f803cc3a0738a63288e4a2f453c85889fbda Mon Sep 17 00:00:00 2001
From: Oliver Neukum <oneukum@xxxxxxx>
Date: Mon, 14 Jul 2014 15:39:49 +0200
Subject: usbcore: don't log on consecutive debounce failures of the same port
Some laptops have an internal port for a BT device which picks
up noise when the kill switch is used, but not enough to trigger
printk_rlimit(). So we shouldn't log consecutive faults of this kind.
Signed-off-by: Oliver Neukum <oneukum@xxxxxxx>
Cc: stable <stable@xxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/usb/core/hub.c | 11 ++++++++---
1 file changed, 8 insertions(+), 3 deletions(-)
diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
index 88f1db27e0af..2c2f67ec36ad 100644
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -4547,6 +4547,7 @@ static void hub_port_connect(struct usb_hub *hub, int port1, u16 portstatus,
struct usb_hcd *hcd = bus_to_hcd(hdev->bus);
struct usb_port *port_dev = hub->ports[port1 - 1];
struct usb_device *udev = port_dev->child;
+ static int unreliable_port = -1;
/* Disconnect any existing devices under this port */
if (udev) {
@@ -4567,10 +4568,14 @@ static void hub_port_connect(struct usb_hub *hub, int port1, u16 portstatus,
USB_PORT_STAT_C_ENABLE)) {
status = hub_port_debounce_be_stable(hub, port1);
if (status < 0) {
- if (status != -ENODEV && printk_ratelimit())
- dev_err(&port_dev->dev,
- "connect-debounce failed\n");
+ if (status != -ENODEV &&
+ port1 != unreliable_port &&
+ printk_ratelimit())
+ dev_err(&udev->dev, "connect-debounce failed, port %d disabled\n",
+ port1);
+
portstatus &= ~USB_PORT_STAT_CONNECTION;
+ unreliable_port = port1;
} else {
portstatus = status;
}
--
2.0.0.254.g50f84e3
--
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