From: Jiri Slaby <jslaby@suse.cz>
Date: Thu, 24 Feb 2022 09:55:54 +0000 (+0100)
Subject: tty: serial: define UART_LCR_WLEN() macro
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=797bd4d41c8b41afc10fad39146ac9558cb39e94;p=linux.git

tty: serial: define UART_LCR_WLEN() macro

Define a generic UART_LCR_WLEN() macro with a size argument. It can be
used to encode byte size into an LCR value. Therefore we can use it to
simplify the drivers using tty_get_char_size() in the next patches.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Link: https://lore.kernel.org/r/20220224095558.30929-1-jslaby@suse.cz
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/include/linux/serial.h b/include/linux/serial.h
index 0916107c77f96..0b8b7d7c8f338 100644
--- a/include/linux/serial.h
+++ b/include/linux/serial.h
@@ -12,6 +12,8 @@
 #include <asm/page.h>
 #include <uapi/linux/serial.h>
 
+/* Helper for dealing with UART_LCR_WLEN* defines */
+#define UART_LCR_WLEN(x)	((x) - 5)
 
 /*
  * Counters of the input lines (CTS, DSR, RI, CD) interrupts