From 5620b5f7f19e9ee3fcf6ecf493fed7821b7b495b Mon Sep 17 00:00:00 2001 From: Alan Stern Date: Tue, 11 Jan 2011 14:16:50 -0500 Subject: USB serial: add missing .usb_driver field in serial drivers This patch (as1443) fixes a bug found in many of the USB serial drivers: They don't set the .usb_driver field in their usb_serial_driver structure. This field is needed for assigning dynamic IDs for device matching. In addition, starting with the 2.6.37 kernel, the .usb_driver field is needed for proper autosuspend operation. Without it, attempts to open the device file will fail. Signed-off-by: Alan Stern Reported-by: Dan Williams CC: Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/usb-serial.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) (limited to 'drivers/usb/serial/usb-serial.c') diff --git a/drivers/usb/serial/usb-serial.c b/drivers/usb/serial/usb-serial.c index 6954de50c0ff..546a52179bec 100644 --- a/drivers/usb/serial/usb-serial.c +++ b/drivers/usb/serial/usb-serial.c @@ -1344,11 +1344,15 @@ 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; + if (!driver->usb_driver) { + WARN(1, "Serial driver %s has no usb_driver\n", + driver->description); + return -EINVAL; + } + driver->usb_driver->supports_autosuspend = 1; /* Add this device to our list of devices */ mutex_lock(&table_lock); -- cgit v1.2.1