serial: arc_uart: simplify flags handling in arc_serial_rx_chars()

* move the declaration of flg (with the initializer) to the loop, so
  there is no need to reset it to TTY_NORMAL by an 'else' branch.
* use TTY_NORMAL as initializer above, not a magic zero constant
* remove the outer 'if' from this construct:
  if (S & (A | B)) {
    if (S & A)
      X;
    if (S & B)
      Y;
  }
* drop unlikely() as I doubt it has any benefits here. If it does,
  provide numbers.

All four make the code easier to read.

Signed-off-by: Jiri Slaby (SUSE) <[email protected]>
Cc: Vineet Gupta <[email protected]>
Acked-by: Vineet Gupta <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>

0 files changed, 0 insertions, 0 deletions