This is a note to let you know that I've just added the patch titled
serial: cpm_uart: Protect udbg definitions by CONFIG_SERIAL_CPM_CONSOLE
to the 5.14-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
serial-cpm_uart-protect-udbg-definitions-by-config_s.patch
and it can be found in the queue-5.14 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit b0a46d3af622982c94ecb98eb98dc59364208c9d
Author: Geert Uytterhoeven <geert@xxxxxxxxxxxxxx>
Date: Wed Oct 27 09:53:26 2021 +0200
serial: cpm_uart: Protect udbg definitions by CONFIG_SERIAL_CPM_CONSOLE
[ Upstream commit d142585bceb3218ad432ed0fcd5be9d6e3cd9052 ]
If CONFIG_CONSOLE_POLL=y, and CONFIG_SERIAL_CPM=m (hence
CONFIG_SERIAL_CPM_CONSOLE=n):
drivers/tty/serial/cpm_uart/cpm_uart_core.c:1109:12: warning: ‘udbg_cpm_getc’ defined but not used [-Wunused-function]
1109 | static int udbg_cpm_getc(void)
| ^~~~~~~~~~~~~
drivers/tty/serial/cpm_uart/cpm_uart_core.c:1095:13: warning: ‘udbg_cpm_putc’ defined but not used [-Wunused-function]
1095 | static void udbg_cpm_putc(char c)
| ^~~~~~~~~~~~~
Fix this by making the udbg definitions depend on
CONFIG_SERIAL_CPM_CONSOLE, in addition to CONFIG_CONSOLE_POLL.
Fixes: a60526097f42eb98 ("tty: serial: cpm_uart: Add udbg support for enabling xmon")
Signed-off-by: Geert Uytterhoeven <geert@xxxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20211027075326.3270785-1-geert@xxxxxxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/tty/serial/cpm_uart/cpm_uart_core.c b/drivers/tty/serial/cpm_uart/cpm_uart_core.c
index c719aa2b18328..d6d3db9c3b1f8 100644
--- a/drivers/tty/serial/cpm_uart/cpm_uart_core.c
+++ b/drivers/tty/serial/cpm_uart/cpm_uart_core.c
@@ -1090,6 +1090,7 @@ static void cpm_put_poll_char(struct uart_port *port,
cpm_uart_early_write(pinfo, ch, 1, false);
}
+#ifdef CONFIG_SERIAL_CPM_CONSOLE
static struct uart_port *udbg_port;
static void udbg_cpm_putc(char c)
@@ -1114,6 +1115,7 @@ static int udbg_cpm_getc(void)
cpu_relax();
return c;
}
+#endif /* CONFIG_SERIAL_CPM_CONSOLE */
#endif /* CONFIG_CONSOLE_POLL */
