From abf03184a31a3286fc0ab30f838ddee8ba9f9b7b Mon Sep 17 00:00:00 2001 From: Alan Stern Date: Mon, 29 Nov 2010 10:17:22 -0500 Subject: [PATCH] USB: fix autosuspend bug in usb-serial This patch (as1437) fixes a bug in the usb-serial autosuspend handling. Since the usb-serial core now has autosuspend support, it must set the .supports_autosuspend member in every serial driver it registers. Otherwise the usb_autopm_get_interface() call won't work. This fixes Bugzilla #23012. Signed-off-by: Alan Stern CC: stable@kernel.org Reported-by: Kevin Smith Reported-and-tested-by: Simon Gerber Reported-and-tested-by: Matteo Croce Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/usb-serial.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/usb/serial/usb-serial.c b/drivers/usb/serial/usb-serial.c index 861223f2af6e..6954de50c0ff 100644 --- a/drivers/usb/serial/usb-serial.c +++ b/drivers/usb/serial/usb-serial.c @@ -51,6 +51,7 @@ static struct usb_driver usb_serial_driver = { .suspend = usb_serial_suspend, .resume = usb_serial_resume, .no_dynamic_id = 1, + .supports_autosuspend = 1, }; /* There is no MODULE_DEVICE_TABLE for usbserial.c. Instead @@ -1343,6 +1344,8 @@ int usb_serial_register(struct usb_serial_driver *driver) return -ENODEV; fixup_generic(driver); + if (driver->usb_driver) + driver->usb_driver->supports_autosuspend = 1; if (!driver->description) driver->description = driver->driver.name; -- 2.20.1