kernel/linux.git/include/linux/usb/serial.h, branch v4.14.134

USB: serial: add calc_num_ports callback to generic driver

2017-03-28T08:54:39+00:00

Add a calc_num_ports callback to the generic driver and verify that the device has the required endpoints there instead of in core. Note that the generic driver num_ports field was never used. Signed-off-by: Johan Hovold

USB: serial: allow subdrivers to modify port-endpoint mapping

2017-03-28T08:54:39+00:00

Allow subdrivers to modify the port-endpoint mapping by passing the endpoint descriptors to calc_num_ports. The callback can now also be used to verify that the required endpoints exists and abort probing otherwise. This will allow us to get rid of a few hacks in subdrivers that are already modifying the port-endpoint mapping (or aborting probe due to missing endpoints), but only after the port structures have been setup. Signed-off-by: Johan Hovold

USB: serial: add endpoint sanity check to core

2017-03-16T09:33:41+00:00

Allow drivers to specify a minimum number of endpoints per type, which USB serial core will verify after subdriver probe has returned (where the current alternate setting may have been changed). Signed-off-by: Johan Hovold

USB: serial: allow up to 16 ports per device

2017-03-16T09:33:40+00:00

Raise the arbitrary limit of how many ports a single device can claim from eight to 16. This specifically enables the upper eight ports of some mxuport devices. Signed-off-by: Johan Hovold

USB: serial: clean up endpoint and port-counter types

2017-03-16T09:13:37+00:00

Use unsigned-char type for the endpoint and port counters. Signed-off-by: Johan Hovold

Revert "USB: serial: make bulk_out_size a lower limit"

2015-02-26T16:02:15+00:00

This reverts commit 5083fd7bdfe6760577235a724cf6dccae13652c2. A bulk-out size smaller than the end-point size is indeed valid. The offending commit broke the usb-debug driver for EHCI debug devices, which use 8-byte buffers. Fixes: 5083fd7bdfe6 ("USB: serial: make bulk_out_size a lower limit") Reported-by: "Li, Elvin" Cc: stable # v3.15 Signed-off-by: Johan Hovold

USB: serial: make bulk_out_size a lower limit

2014-03-12T19:44:49+00:00

Drivers are allowed to override the default bulk-out buffer size (endpoint maximum packet size) in order to increase throughput, but it does not make much sense to allow buffers smaller than the default. Note that this is already how bulk_in_size is defined. Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman

USB: serial: export usb_serial_generic_write_start

2013-10-12T00:00:26+00:00

Export usb_serial_generic_write_start which is needed when implementing a custom resume function while still relying on the generic write implementation. Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman

USB: serial: increase the number of devices we support

2013-06-17T20:34:15+00:00

We had the limit of 255 USB to serial devices on one system for almost 15 years, with no complaints. But now it's time to move on from these tiny "baby" systems, and bump the number up to 512, which should last us a few more years: "512 is a nice number" -- Tobias Winter Note, this is still a static value, and uses up tty core memory with this many tty devices allocated. Converting the driver to use TTY_DRIVER_DYNAMIC_DEV is the next thing to do in order to remove this limitation. Reported-by: Tobias Winter Tested-by: Tobias Winter Reviewed-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman

USB: serial: make minor allocation dynamic

2013-06-17T20:30:02+00:00

This moves the allocation of minor device numbers from a static array to be dynamic, using the idr interface. This means that you could potentially get "gaps" in a minor number range for a single USB serial device with multiple ports, but all should still work properly. We remove the 'minor' field from the usb_serial structure, as it no longer makes any sense for it (use the field in the usb_serial_port structure if you really want to know this number), and take the fact that we were overloading a number in this field to determine if we had initialized the minor numbers or not, and just use a flag variable instead. Note, we still have the limitation of 255 USB to serial devices in the system, as that is all we are registering with the TTY layer at this point in time. Tested-by: Tobias Winter Reviewed-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman