On Fri, 2018-06-01 at 14:40 +0200, Giulio Benetti wrote: > Some 8250 ports only have TEMT interrupt, so current implementation > can't work for ports without it. The only chance to make it work is to > loop-read on LSR register. > > With NO TEMT interrupt check if both TEMT and THRE are set looping on > LSR register.
> --- a/drivers/tty/serial/8250/8250_dw.c > +++ b/drivers/tty/serial/8250/8250_dw.c > - int ret = serial8250_em485_init(up); > + int ret = serial8250_em485_init(up, false); Is true for all possible DW configured types? Or it's your particular case? -- Andy Shevchenko <andriy.shevche...@linux.intel.com> Intel Finland Oy
