From: Bjorn Andersson <bjorn.andersson@sonymobile.com>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Jiri Slaby <jslaby@suse.com>, Rob Herring <robh@kernel.org>
Cc: linux-serial@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH] serial: earlycon: Initialize uart_port spinlock
Date: Thu, 10 Dec 2015 17:08:46 -0800 [thread overview]
Message-ID: <1449796126-14906-1-git-send-email-bjorn.andersson@sonymobile.com> (raw)
Initialize the uart_port spinlock of earlycon to avoid the BUG() when
booting with spinlock debug enabled.
Signed-off-by: Bjorn Andersson <bjorn.andersson@sonymobile.com>
---
drivers/tty/serial/earlycon.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/tty/serial/earlycon.c b/drivers/tty/serial/earlycon.c
index f09636083426..6c18891ad8d0 100644
--- a/drivers/tty/serial/earlycon.c
+++ b/drivers/tty/serial/earlycon.c
@@ -111,6 +111,8 @@ static int __init register_earlycon(char *buf, const struct earlycon_id *match)
int err;
struct uart_port *port = &early_console_dev.port;
+ spin_lock_init(&port->lock);
+
/* On parsing error, pass the options buf to the setup function */
if (buf && !parse_options(&early_console_dev, buf))
buf = NULL;
@@ -202,6 +204,7 @@ int __init of_setup_earlycon(unsigned long addr,
int err;
struct uart_port *port = &early_console_dev.port;
+ spin_lock_init(&port->lock);
port->iotype = UPIO_MEM;
port->mapbase = addr;
port->uartclk = BASE_BAUD * 16;
--
2.4.2
next reply other threads:[~2015-12-11 1:08 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-12-11 1:08 Bjorn Andersson [this message]
2015-12-11 2:35 ` [PATCH] serial: earlycon: Initialize uart_port spinlock Rob Herring
2015-12-11 16:28 ` Bjorn Andersson
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