kernel/linux.git/include/linux/usb/serial.h, branch v3.6.8

USB: serial: hook up reset_resume callback

2012-05-15T22:40:00+00:00

The callback is now hooked up for any USB to serial driver that wants it. We only register the callback if any of the usb-serial structures want it, this keeps the USB core happy. Thanks to Alan Stern for the ideas on how to do this. Cc: Alan Stern Signed-off-by: Greg Kroah-Hartman

USB: serial: rework usb_serial_register/deregister_drivers()

2012-05-08T22:46:14+00:00

This reworks the usb_serial_register_drivers() and usb_serial_deregister_drivers() to not need a pointer to a struct usb_driver anymore. The usb_driver structure is now created dynamically and registered and unregistered as needed. This saves lines of code in each usb-serial driver. All in-kernel users of these functions were also fixed up at this time. The pl2303 driver was tested that everything worked properly. Thanks for the idea to do this from Alan Stern. Cc: Adhir Ramjiawan Cc: Alan Stern Cc: Al Borchers Cc: Aleksey Babahin Cc: Andrew Morton Cc: Andrew Worsley Cc: Bart Hartgers Cc: Bill Pemberton Cc: Dan Carpenter Cc: Dan Williams Cc: Donald Lee Cc: Eric Dumazet Cc: "Eric W. Biederman" Cc: Felipe Balbi Cc: Gary Brubaker Cc: Jesper Juhl Cc: Jiri Kosina Cc: Johan Hovold Cc: Julia Lawall Cc: Kautuk Consul Cc: Kuninori Morimoto Cc: Lonnie Mendez Cc: Matthias Bruestle and Harald Welte Cc: Matthias Urlichs Cc: Mauro Carvalho Chehab Cc: Michal Sroczynski Cc: "Michał Wróbel" Cc: Oliver Neukum Cc: Paul Gortmaker Cc: Peter Berger Cc: Preston Fick Cc: "Rafael J. Wysocki" Cc: Rigbert Hamisch Cc: Rusty Russell Cc: Simon Arlott Cc: Support Department Cc: Thomas Tuttle Cc: Uwe Bonnes Cc: Wang YanQing Cc: William Greathouse Signed-off-by: Greg Kroah-Hartman

USB: serial: remove bizarre generic_serial probe function

2012-05-07T21:46:48+00:00

I can't remember why I wrote it like this many many years ago, but it's not needed at all, let's rely on the usb-serial core for this function, especially as it is being overridden by it anyway. This lets us make usb_serial_probe() a static function, which it should be. Cc: Alan Stern Signed-off-by: Greg Kroah-Hartman

USB: serial: remove usb_serial_disconnect call in all drivers

2012-05-07T21:02:13+00:00

This is now set by the usb-serial core, no need for the driver to individually set it. Thanks to Alan Stern for the idea to get rid of it. Cc: William Greathouse Cc: Matthias Bruestle and Harald Welte Cc: Lonnie Mendez Cc: Peter Berger Cc: Al Borchers Cc: Gary Brubaker Cc: Oliver Neukum Cc: Matthias Urlichs Cc: Support Department Cc: Rusty Russell Cc: Alan Stern Cc: Mauro Carvalho Chehab Cc: Kautuk Consul Cc: Bill Pemberton Cc: Paul Gortmaker Cc: Bart Hartgers Cc: Johan Hovold Cc: Preston Fick Cc: Uwe Bonnes Cc: Simon Arlott Cc: Andrew Worsley Cc: "Michał Wróbel" Cc: Andrew Morton Cc: Eric Dumazet Cc: "Eric W. Biederman" Cc: Felipe Balbi Cc: Aleksey Babahin Cc: Dan Carpenter Cc: Jiri Kosina Cc: Donald Lee Cc: Julia Lawall Cc: Michal Sroczynski Cc: Wang YanQing Cc: Dan Williams Cc: Thomas Tuttle Cc: Rigbert Hamisch Cc: "Rafael J. Wysocki" Cc: Kuninori Morimoto Cc: Jesper Juhl Cc: Adhir Ramjiawan Signed-off-by: Greg Kroah-Hartman

USB: fix bug in serial driver unregistration

2012-04-09T22:36:20+00:00

This patch (as1536) fixes a bug in the USB serial core. Unloading and reloading a serial driver while a serial device is plugged in causes errors because of the code in usb_serial_disconnect() that tries to make sure the port_remove method is called. With the new order of driver registration introduced in the 3.4 kernel, this is definitely not the right thing to do (if indeed it ever was). The patch removes that whole section code, along with the mechanism for keeping track of each port's registration state, which is no longer needed. The driver core can handle all that stuff for us. Note: This has been tested only with one or two USB serial drivers. In theory, other drivers might still run into trouble. But if they do, it will be the fault of the drivers, not of this patch -- that is, the drivers will need to be fixed. Signed-off-by: Alan Stern Reported-and-tested-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman

USB: serial: use module_driver() macro

2012-03-10T00:38:14+00:00

Now that module_driver() can handle varargs, use it instead of rolling our own version. Cc: Lars-Peter Clausen Signed-off-by: Greg Kroah-Hartman

USB: create module_usb_serial_driver macro

2012-02-28T19:21:48+00:00

Now that Alan Stern has cleaned up the usb serial driver registration, we have the ability to create a module_usb_serial_driver macro to make things a bit simpler, like the other *_driver macros created. But, as we need two functions here, we can't reuse the existing module_driver() macro, so we need to roll our own. Here's a patch implementing module_usb_serial_driver() and it converts the pl2303 driver to use it, showing a nice cleanup. Signed-off-by: Greg Kroah-Hartman

USB: serial: remove usb_serial_register and usb_serial_deregister

2012-02-24T20:50:30+00:00

No one uses them anymore, they should be using the safer usb_serial_register_drivers() and usb_serial_deregister_drivers() functions instead. Thanks to Alan Stern for writing these functions and porting all in-kernel users to them. Cc: Alan Stern Signed-off-by: Greg Kroah-Hartman

usb-serial: new API for driver registration

2012-02-24T20:39:17+00:00

This patch (as1522) adds two new routines to the usb-serial core, for registering and unregistering serial drivers. Instead of registering the usb_driver and usb_serial_drivers separately, with error checking for each one, the drivers can all be registered and unregistered by a single function call. This reduces duplicated code. More importantly, the new core routines change the order in which the drivers are registered. Currently the usb-serial drivers are all registered first and the usb_driver is done last, which leaves a window for problems. A udev script may quickly add a new dynamic-ID for a usb-serial driver, causing the corresponding usb_driver to be probed. If the usb_driver hasn't been registered yet then an oops will occur. The new routine prevents such problems by registering the usb_driver first. To insure that it gets probed properly for already-attached serial devices, we call driver_attach() after all the usb-serial drivers have been registered. Along with adding the new routines, the patch modifies the "generic" serial driver to use them. Further patches will similarly modify all the other in-tree USB serial drivers. Signed-off-by: Alan Stern Signed-off-by: Greg Kroah-Hartman

USB: serial: add macro for console error reporting

2012-02-09T16:43:02+00:00

Add macro which prints an error message only once if port is used a console. Reporting errors in a write path when port is used as a console could otherwise result in an infinite loop. Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman