linux-kernel - [PATCH v1 1/3] serial: core: Don't count XON/XOFF in the statistics

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Date: Wed,  3 Apr 2024 17:46:15 +0300
From: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	linux-kernel@...r.kernel.org,
	linux-serial@...r.kernel.org
Cc: Jiri Slaby <jirislaby@...nel.org>,
	Orson Zhai <orsonzhai@...il.com>,
	Baolin Wang <baolin.wang@...ux.alibaba.com>,
	Chunyan Zhang <zhang.lyra@...il.com>,
	Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Subject: [PATCH v1 1/3] serial: core: Don't count XON/XOFF in the statistics

Don't count XON/XOFF in the statistics in __uart_port_tx().
It will make it in align with other serial drivers. With
this change we may use uart_xmit_advance() API instead of
open coded analogue.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
---
 include/linux/serial_core.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/include/linux/serial_core.h b/include/linux/serial_core.h
index 0a0f6e21d40e..9579d70a367e 100644
--- a/include/linux/serial_core.h
+++ b/include/linux/serial_core.h
@@ -767,7 +767,7 @@ enum UART_TX_FLAGS {
 	struct circ_buf *xmit = &__port->state->xmit;			      \
 	unsigned int pending;						      \
 									      \
-	for (; (for_test) && (tx_ready); (for_post), __port->icount.tx++) {   \
+	for (; (for_test) && (tx_ready); (for_post)) {			      \
 		if (__port->x_char) {					      \
 			(ch) = __port->x_char;				      \
 			(put_char);					      \
@@ -780,7 +780,7 @@ enum UART_TX_FLAGS {
 									      \
 		(ch) = xmit->buf[xmit->tail];				      \
 		(put_char);						      \
-		xmit->tail = (xmit->tail + 1) % UART_XMIT_SIZE;		      \
+		uart_xmit_advance(__port, 1);				      \
 	}								      \
 									      \
 	(tx_done);							      \
-- 
2.43.0.rc1.1.gbec44491f096