diff options
author | Ingo Molnar <mingo@kernel.org> | 2012-09-04 14:31:00 +0200 |
---|---|---|
committer | Ingo Molnar <mingo@kernel.org> | 2012-09-04 14:31:00 +0200 |
commit | 59f979455d7209171ab10a72c8df5c2512976cb4 (patch) | |
tree | c4c7fc48bd79bf8acbe848a1b979fa9e8ab4ac6a /drivers/usb/serial/bus.c | |
parent | b9bb50db9126c4ccad78af2dfb77277ca17c9b64 (diff) | |
parent | 9450d57eab5cad36774c297da123062744472588 (diff) |
Merge branch 'sched/urgent' into sched/core
Merge in the current fixes branch, we are going to apply dependent patches.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'drivers/usb/serial/bus.c')
-rw-r--r-- | drivers/usb/serial/bus.c | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/drivers/usb/serial/bus.c b/drivers/usb/serial/bus.c index f398d1e3447..c15f2e7cefc 100644 --- a/drivers/usb/serial/bus.c +++ b/drivers/usb/serial/bus.c @@ -61,18 +61,23 @@ static int usb_serial_device_probe(struct device *dev) goto exit; } + /* make sure suspend/resume doesn't race against port_probe */ + retval = usb_autopm_get_interface(port->serial->interface); + if (retval) + goto exit; + driver = port->serial->type; if (driver->port_probe) { retval = driver->port_probe(port); if (retval) - goto exit; + goto exit_with_autopm; } retval = device_create_file(dev, &dev_attr_port_number); if (retval) { if (driver->port_remove) retval = driver->port_remove(port); - goto exit; + goto exit_with_autopm; } minor = port->number; @@ -81,6 +86,8 @@ static int usb_serial_device_probe(struct device *dev) "%s converter now attached to ttyUSB%d\n", driver->description, minor); +exit_with_autopm: + usb_autopm_put_interface(port->serial->interface); exit: return retval; } @@ -96,6 +103,9 @@ static int usb_serial_device_remove(struct device *dev) if (!port) return -ENODEV; + /* make sure suspend/resume doesn't race against port_remove */ + usb_autopm_get_interface(port->serial->interface); + device_remove_file(&port->dev, &dev_attr_port_number); driver = port->serial->type; @@ -107,6 +117,7 @@ static int usb_serial_device_remove(struct device *dev) dev_info(dev, "%s converter now disconnected from ttyUSB%d\n", driver->description, minor); + usb_autopm_put_interface(port->serial->interface); return retval; } |