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SubjectRe: [PATCH] usb-serial:cp210x: add support to software flow control
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On 30.07.20 10:32, china_shenglong wrote:
> Hi, Greg
>
> Yeah, It mainly adjusts the code style according to the kernel
> specification,
> and then modifies it according to your previous review comments.
>
> Thanks,
>
> BR/ Wang ShengLong
>
>
> At 2020-07-30 16:06:39, "Greg KH" <gregkh@linuxfoundation.org> wrote:
>>On Thu, Jul 30, 2020 at 03:59:22PM +0800, Sheng Long Wang wrote:
>>> From: Wang Sheng Long <shenglong.wang.ext@siemens.com>
>>>
>>> When data is transmitted between two serial ports,
>>> the phenomenon of data loss often occurs. The two kinds
>>> of flow control commonly used in serial communication
>>> are hardware flow control and software flow control.
>>>
>>> In serial communication, If you only use RX/TX/GND Pins, you
>>> can't do hardware flow. So we often used software flow control
>>> and prevent data loss. The user sets the software flow control
>>> through the application program, and the application program
>>> sets the software flow control mode for the serial port
>>> chip through the driver.
>>>
>>> For the cp210 serial port chip, its driver lacks the
>>> software flow control setting code, so the user cannot set
>>> the software flow control function through the application
>>> program. This adds the missing software flow control.
>>>
>>> Signed-off-by: Wang Sheng Long <shenglong.wang.ext@siemens.com>
>>> ---
>>> drivers/usb/serial/cp210x.c | 118 ++++++++++++++++++++++++++++++++++--
>>> 1 file changed, 113 insertions(+), 5 deletions(-)
>>
>>What changed from the previous version of this patch? That should be
>>described below the --- line and this is a v2, right?
>>
>>thanks,
>>
>>greg k-h

This no longer applies. Shenglong, could you send a rebased version as v3?
Please also include a changelog after the "---" separator this time.

Thanks,
Jan

--
Siemens AG, Corporate Technology, CT RDA IOT SES-DE
Corporate Competence Center Embedded Linux

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