On Sat, Jun 20, 2020 at 09:58:40PM +0200, Jerry wrote: > usbserial: add cp210x support for icount to detect parity error in received data Why is this here? > Motivation - current version of cp210x driver doesn't provide any way to detect > a parity error in received data from userspace. Some serial protocols like STM32 > bootloader protect data only by even parity so application needs to detect > whether parity error happened to read again peripheral data. > > I created a simple patch which adds support for icount (ioctl TIOCGICOUNT) which > sends GET_COMM_STATUS command to CP210X and according received flags increments > fields for parity error, frame error, break and overrun. > So application can detect an error condition after reading data from ttyUSB > and repeat operation. There is no impact for applications which don't > call ioctl TIOCGICOUNT. > This patch is also placed at http://yyy.jrr.cz/cp210x.patch (my first patch) Please read the section entitled "The canonical patch format" in the kernel file, Documentation/SubmittingPatches for what is needed in order to properly describe the change. > Signed-off-by: Jaromir Skorpil <Jerry@xxxxxx> This does not match your From: line :( thanks, greg k-h
