diff options
| author | Alan Stern <stern@rowland.harvard.edu> | 2010-11-29 16:17:22 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2010-11-30 19:28:07 +0100 |
| commit | abf03184a31a3286fc0ab30f838ddee8ba9f9b7b (patch) | |
| tree | 872111596aa69ff687fb4881cc9aa4c911d278bb | |
| parent | USB: ehci: disable LPM and PPCD for nVidia MCP89 chips (diff) | |
| download | linux-abf03184a31a3286fc0ab30f838ddee8ba9f9b7b.tar.xz linux-abf03184a31a3286fc0ab30f838ddee8ba9f9b7b.zip | |
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 <stern@rowland.harvard.edu>
CC: stable@kernel.org
Reported-by: Kevin Smith <thirdwiggin@gmail.com>
Reported-and-tested-by: Simon Gerber <gesimu@gmail.com>
Reported-and-tested-by: Matteo Croce <matteo@openwrt.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| -rw-r--r-- | drivers/usb/serial/usb-serial.c | 3 |
1 files changed, 3 insertions, 0 deletions
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; |