Commit 1e180f16 authored Apr 30, 2018 by Shuah Khan (Samsung OSG) Committed by Greg Kroah-Hartman May 15, 2018

usbip: usbip_host: delete device from busid_table after rebind



Device is left in the busid_table after unbind and rebind. Rebind
initiates usb bus scan and the original driver claims the device.
After rescan the device should be deleted from the busid_table as
it no longer belongs to usbip_host.

Fix it to delete the device after device_attach() succeeds.

Signed-off-by: Shuah Khan (Samsung OSG) <shuah@kernel.org>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

parent 28b68acc

drivers/usb/usbip/stub_main.c

+6 −0

Original line number	Diff line number	Diff line
		@@ -186,6 +186,9 @@ static ssize_t rebind_store(struct device_driver dev, const char buf,
		if (!bid)
		return -ENODEV;

		/* mark the device for deletion so probe ignores it during rescan */
		bid->status = STUB_BUSID_OTHER;

		/* device_attach() callers should hold parent lock for USB */
		if (bid->udev->dev.parent)
		device_lock(bid->udev->dev.parent);
		@@ -197,6 +200,9 @@ static ssize_t rebind_store(struct device_driver dev, const char buf,
		return ret;
		}

		/* delete device from busid_table */
		del_match_busid((char *) buf);

		return count;
		}