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Commit 5ee0f803 authored by Oliver Neukum's avatar Oliver Neukum Committed by Greg Kroah-Hartman
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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: default avatarOliver Neukum <oneukum@suse.de>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 934ef5ac

drivers/usb/core/hub.c

+8 −3
Original line number Diff line number Diff line
@@ -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;

		}