On Fri, Apr 05, 2024 at 05:29:24PM +0200, Niklas Schnelle wrote: > In a future patch HAS_IOPORT=n will disable inb()/outb() and friends at > compile time. We thus need to add HAS_IOPORT as dependency for those > drivers using them unconditionally. For 8250 based drivers some support > MMIO only use so fence only the parts requiring I/O ports. > > Co-developed-by: Arnd Bergmann <arnd@xxxxxxxxxx> > Signed-off-by: Arnd Bergmann <arnd@xxxxxxxxxx> > Signed-off-by: Niklas Schnelle <schnelle@xxxxxxxxxxxxx> ... > @@ -422,10 +443,12 @@ static void set_io_from_upio(struct uart_port *p) > up->dl_write = default_serial_dl_write; > > + default: > + WARN(1, "Unsupported UART type %x\n", p->iotype); So, according to this patch, the serial uart on microblaze, nios2, openrisc, xtensa, and possibly others is not or no longer supported. WARNING: CPU: 0 PID: 0 at drivers/tty/serial/8250/8250_port.c:470 serial8250_set_defaults+0x1a8/0x22c Unsupported UART type 0 Any special reason ? Guenter
