On 24.08.20 11:28, Wang, Sheng Long (EXT) (RC-CN DI FA R&D SW) wrote: > Hi Johan, > > Thanks for your reminding. I am adjusting patch according to the latest Linux Master branch. Use git.kernel.org/pub/scm/linux/kernel/git/johan/usb-serial.git, branch is likely usb-linus, as Johan requested - just in case there is another conflict due to a patch not yet in Linux master but in that tree. > > With best regards, > Wang Sheng Long > Siemens Ltd., China > RC-CN DI FA R&D SW > Tianyuan road No.99 > 611731 CHENGDU, China > Mobil: +86 15281074996 > mailto:shenglong.wang.ext@xxxxxxxxxxx > > > > -----Original Message----- > From: Johan Hovold <johan@xxxxxxxxxx> > Sent: Monday, August 24, 2020 5:10 PM > To: Kiszka, Jan (CT RDA IOT SES-DE) <jan.kiszka@xxxxxxxxxxx> > Cc: Sheng Long Wang <china_shenglong@xxxxxxx>; Wang, Sheng Long (EXT) (RC-CN DI FA R&D SW) <shenglong.wang.ext@xxxxxxxxxxx>; johan@xxxxxxxxxx; gregkh@xxxxxxxxxxxxxxxxxxx; linux-usb@xxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx > Subject: Re: [PATCH v3] usb-serial:cp210x: add support to software flow control > > On Fri, Aug 21, 2020 at 07:32:58AM +0200, Jan Kiszka wrote: >> On 20.08.20 09:52, Sheng Long Wang wrote: >>> From: Wang Sheng Long <shenglong.wang.ext@xxxxxxxxxxx> >>> >>> 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@xxxxxxxxxxx> >>> >>> Changes in v3: >>> -fixed code style, It mainly adjusts the code style acccording to >>> kernel specification. >> >> Patch does not apply. You forgot to rebase over latest tty/tty-next or >> linux master. > > That should be the usb-next branch of the usb-serial tree: > > https://git.kernel.org/pub/scm/linux/kernel/git/johan/usb-serial.git/ > > or linux-next (or, currently, Linus's master branch). > > You can use "scripts/get_maintainer.sh --scm" to determine which tree to base your work against. Thanks for correcting! But it's scripts/get_maintainer.pl. ;) Jan -- Siemens AG, Corporate Technology, CT RDA IOT SES-DE Corporate Competence Center Embedded Linux
