From 5efe8f58b68a6c29e56e1f8d2ee649f9fd51556c Mon Sep 17 00:00:00 2001 Message-Id: <5efe8f58b68a6c29e56e1f8d2ee649f9fd51556c.1596234183.git.zanussi@kernel.org> In-Reply-To: <378ee68279f6a7631221f2670a9298620148690d.1596234183.git.zanussi@kernel.org> References: <378ee68279f6a7631221f2670a9298620148690d.1596234183.git.zanussi@kernel.org> From: Kurt Kanzenbach Date: Mon, 24 Sep 2018 10:29:01 +0200 Subject: [PATCH 166/329] tty: serial: pl011: explicitly initialize the flags variable MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.135-rt60.tar.xz Silence the following gcc warning: drivers/tty/serial/amba-pl011.c: In function ‘pl011_console_write’: ./include/linux/spinlock.h:260:3: warning: ‘flags’ may be used uninitialized in this function [-Wmaybe-uninitialized] _raw_spin_unlock_irqrestore(lock, flags); \ ^~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/tty/serial/amba-pl011.c:2214:16: note: ‘flags’ was declared here unsigned long flags; ^~~~~ The code is correct. Thus, initializing flags to zero doesn't change the behavior and resolves the warning. Signed-off-by: Kurt Kanzenbach Signed-off-by: Sebastian Andrzej Siewior --- drivers/tty/serial/amba-pl011.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/tty/serial/amba-pl011.c b/drivers/tty/serial/amba-pl011.c index e00b8b6fdae1..55adaabb71ad 100644 --- a/drivers/tty/serial/amba-pl011.c +++ b/drivers/tty/serial/amba-pl011.c @@ -2209,7 +2209,7 @@ pl011_console_write(struct console *co, const char *s, unsigned int count) { struct uart_amba_port *uap = amba_ports[co->index]; unsigned int old_cr = 0, new_cr; - unsigned long flags; + unsigned long flags = 0; int locked = 1; clk_enable(uap->clk); -- 2.17.1