kernel/linux.git/drivers/usb/serial/generic.c, branch v6.12.80

USB: serial: drop driver owner initialization

2024-08-26T13:28:25+00:00

Core in usb_serial_register_drivers() already sets the .owner, so driver does not need to. Signed-off-by: Krzysztof Kozlowski Signed-off-by: Johan Hovold

USB: serial: make usb_serial_driver::chars_in_buffer return uint

2021-05-19T08:56:41+00:00

tty_operations::chars_in_buffer is being switched to return uint. Do the same for usb_serial_driver's chars_in_buffer. Signed-off-by: Jiri Slaby [ johan: amend commit message ] Signed-off-by: Johan Hovold

USB: serial: make usb_serial_driver::write_room return uint

2021-05-19T08:56:40+00:00

Line disciplines expect a positive value or zero returned from tty->ops->write_room (invoked by tty_write_room). Both of them are being updated to return an unsigned int. Switch also usb_serial_driver::write_room and all its users. Signed-off-by: Jiri Slaby [ johan: amend commit message, drop unrelated comment change ] Signed-off-by: Johan Hovold

USB: serial: drop redundant transfer-buffer casts

2020-07-09T07:20:17+00:00

Drop redundant URB transfer-buffer casts. Reviewed-by: Greg Kroah-Hartman Signed-off-by: Johan Hovold

USB: serial: add sysrq break-handler dummy

2020-07-09T07:20:10+00:00

Add inline sysrq break-handler dummy to allow the compiler to eliminate further code when either console or sysrq support isn't enabled and to clearly mark the two sysrq functions as belonging together. Reviewed-by: Greg Kroah-Hartman Signed-off-by: Johan Hovold

USB: serial: inline sysrq dummy function

2020-07-09T07:20:06+00:00

Inline the dummy sysrq character handling when either console support or magic-sysrq support isn't enabled to allow the compiler to eliminate unused code. Reviewed-by: Greg Kroah-Hartman Signed-off-by: Johan Hovold

USB: serial: only process sysrq when enabled

2020-07-09T07:20:04+00:00

Do not set the sysrq timestamp unless CONFIG_MAGIC_SYSRQ is enabled to avoid unnecessary per-character processing for consoles. Reviewed-by: Greg Kroah-Hartman Signed-off-by: Johan Hovold

USB: serial: only set sysrq timestamp for consoles

2020-07-09T07:19:54+00:00

Only set the sysrq timestamp for console ports to avoid having every driver also check the console flag when processing incoming data. Reviewed-by: Greg Kroah-Hartman Signed-off-by: Johan Hovold

USB: serial: clean up carrier-detect helper

2020-03-11T08:38:01+00:00

Drop the struct tty_port pointer and rename the struct usb_serial_port pointer "port", which is the named used throughout the subsystem and incidentally also matches the kernel-doc comment. Signed-off-by: Johan Hovold

USB: serial: relax unthrottle memory barrier

2020-02-10T09:37:11+00:00

Commit a8d78d9f3856 ("USB: serial: clean up throttle handling") converted the throttle handling to use atomic bitops. This means that we can relax the smp_mb() in unthrottle() to smp_mb__after_atomic(), which for example is a no-op on architectures like x86 that provide fully ordered atomics. Reviewed-by: Greg Kroah-Hartman Reviewed-by: Davidlohr Bueso Signed-off-by: Johan Hovold