From: Peter Hung <hpeter@gmail.com>
To: johan@kernel.org
Cc: gregkh@linuxfoundation.org, linux-usb@vger.kernel.org,
linux-kernel@vger.kernel.org, tom_tsai@fintek.com.tw,
peter_hong@fintek.com.tw, hpeter@gmail.com,
Peter Hung <hpeter+linux_kernel@gmail.com>
Subject: [PATCH V8 00/10] USB: f81232: V8 patches
Date: Thu, 26 Feb 2015 18:02:06 +0800 [thread overview]
Message-ID: <1424944936-7117-1-git-send-email-hpeter+linux_kernel@gmail.com> (raw)
This series patch V8 is changed from V7 as following:
1. The V7 MSR strange delta value is checked with locking problem. We changed
f81232_set_mctrl() & f81232_read_msr() lock mechanism, the old version is
only locked with variable protection, new version will lock from start to
end with these 2 function.
2. f81232_set_baudrate() add error handling and no longer handle with baudrate
B0, change to handle with f81232_set_termios()
3. When user set baudrate larger then 115200, we will change it with 115200
and tty_encode_baud_rate() in f81232_set_termios().
4. V7 f81232_set_baudrate() divisor declared with type u8, it will make
baudrate set failed with smaller then B600 (115200/300=384 overflow :Q).
We changed it with integer type for divisor larger then 256.
V7 (old change):
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 (10):
USB: f81232: rename private struct member name
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/disable method
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 | 551 ++++++++++++++++++++++++++++++++++++--------
1 file changed, 453 insertions(+), 98 deletions(-)
--
1.9.1
next reply other threads:[~2015-02-26 10:02 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-02-26 10:02 Peter Hung [this message]
2015-02-26 10:02 ` [PATCH V8 01/10] USB: f81232: rename private struct member name Peter Hung
2015-02-26 10:02 ` [PATCH V8 02/10] USB: f81232: implement RX bulk-in EP Peter Hung
2015-03-14 11:48 ` Johan Hovold
2015-03-16 2:53 ` Peter Hung
2015-03-16 8:52 ` Johan Hovold
2015-03-16 9:15 ` Peter Hung
2015-02-26 10:02 ` [PATCH V8 03/10] USB: f81232: change lock mechanism Peter Hung
2015-02-26 10:02 ` [PATCH V8 04/10] USB: f81232: implement read IIR/MSR with endpoint Peter Hung
2015-03-14 12:02 ` Johan Hovold
2015-03-16 3:08 ` Peter Hung
2015-03-16 8:55 ` Johan Hovold
2015-03-16 9:18 ` Peter Hung
2015-02-26 10:02 ` [PATCH V8 05/10] USB: f81232: implement MCR/MSR function Peter Hung
2015-03-14 12:09 ` Johan Hovold
2015-02-26 10:02 ` [PATCH V8 06/10] USB: f81232: implement port enable/disable method Peter Hung
2015-02-26 10:02 ` [PATCH V8 07/10] USB: f81232: implement set_termios() Peter Hung
2015-03-14 12:24 ` Johan Hovold
2015-02-26 10:02 ` [PATCH V8 08/10] USB: f81232: clarify f81232_ioctl() and fix Peter Hung
2015-03-14 12:27 ` Johan Hovold
2015-02-26 10:02 ` [PATCH V8 09/10] USB: f81232: cleanup non-used define Peter Hung
2015-02-26 10:02 ` [PATCH V8 10/10] USB: f81232: modify/add author Peter Hung
2015-03-05 5:59 ` [PATCH V8 00/10] USB: f81232: V8 patches Peter Hung
2015-03-05 7:03 ` Johan Hovold
2015-03-14 12:30 ` Johan Hovold
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