[PATCH 2/7] mxser: simplify condition in mxser_receive_chars_new

[Jiri Slaby]

mxser_receive_chars_old() is used whenever MOXA_MUST_LSR_RERR is set in
status no matter the HW ID (the last 'if'). So there is no need for
another check of MOXA_MUST_LSR_RERR _with_ hwid == MOXA_MUST_MU860_HWID
(the third 'if').  Hence remove this subcase. That allows us to check
status on a single line with both UART_LSR_BRK_ERROR_BITS (from the
second 'if') and MOXA_MUST_LSR_RERR (the last 'if').

Signed-off-by: Jiri Slaby <jslaby@xxxxxxx>
---
 drivers/tty/mxser.c | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/drivers/tty/mxser.c b/drivers/tty/mxser.c
index b9cc41782ce1..f907de56e08b 100644
--- a/drivers/tty/mxser.c
+++ b/drivers/tty/mxser.c
@@ -1550,11 +1550,7 @@ static bool mxser_receive_chars_new(struct tty_struct *tty,
 
 	if (hwid == MOXA_OTHER_UART)
 		return false;
-	if (status & UART_LSR_BRK_ERROR_BITS)
-		return false;
-	if (hwid == MOXA_MUST_MU860_HWID && (status & MOXA_MUST_LSR_RERR))
-		return false;
-	if (status & MOXA_MUST_LSR_RERR)
+	if (status & (UART_LSR_BRK_ERROR_BITS | MOXA_MUST_LSR_RERR))
 		return false;
 
 	gdl = inb(port->ioaddr + MOXA_MUST_GDL_REGISTER);
-- 
2.33.0