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. Johan
