[PATCH V7 00/11] USB: f81232: V7 patches

Peter Hung
2015-02-24T10:16:43Z

This series patch V7 is changed from V6 as following:

1. The buffer of usb_control_msg() in set_register()/get_register() are change
from local variable to kmalloc(). (PATCH V7 02/11)
2. Change all set_register()/get_register() return value 0 is success,
otherwise are failed. ( return 0 of usb_control_msg() treat as -EIO,
PATCH V7 02/11)
3. tty_port_tty_get() called only when DCD has changed. (PATCH V7 05/11)
4. remove likely()/unlikely() branch prediction.
5. Implement DTR/RTS control when baudrate B0. We drop DTR/RTS when B0,
otherwise enable it. (PATCH V7 08/11)
6. Change private struct line_control to modem_control with meanful.
(PATCH V7 06/11)
7. We confirmd MSR strange delta value is not locking-issue. The issue
maybe reproduce with set MCR & get MSR before IIR notice with MSR changed.

V6 (old change):

1. transform all function not to use private data as parameter, using
usb_serial_port instead.
2. process_read_urb() add process of Break/FrameError/ParityError/OE.
(patch: 03/10)
3. fix calc_baud_divisor() will cause divide by zero with B0. (patch: 04/10)
4. Some init step we extract it from set_termios() to f81232_port_init()
and run it when open port only. (patch: 04/10)
5. We'll force re-read msr in tiocmget() because the IIR with MSR change
maybe delay received. (patch: 05/10)
6. fix MSR status bits changed but delta bits is 0 will cause read serial port
malfunctional with update port status. (patch: 08/10)
7. Add MSR change statistic when MSR has been read. (patch: 09/10)
8. clarify a lot of code about Johan suggested.

Peter Hung (11):
USB: f81232: rename private struct member name
USB: f81232: add preparatory functions
USB: f81232: implement RX bulk-in EP
USB: f81232: change lock mechanism
USB: f81232: implement read IIR/MSR with endpoint
USB: f81232: implement MCR/MSR function
USB: f81232: implement port_enable function
USB: f81232: implement set_termios()
USB: f81232: clarify f81232_ioctl() and fix
USB: f81232: cleanup non-used define
USB: f81232: modify/add author

drivers/usb/serial/f81232.c | 554 ++++++++++++++++++++++++++++++++++++--------
1 file changed, 458 insertions(+), 96 deletions(-)

--
1.9.1