[PATCH] serial: sh-sci: fix uninitialized variable warning

Charles
2019-06-13T18:08:50Z

Avoid following compiler warning on uninitialized variable

In file included from ./include/linux/rwsem.h:16:0,
from ./include/linux/notifier.h:15,
from ./include/linux/clk.h:17,
from drivers/tty/serial/sh-sci.c:24:
drivers/tty/serial/sh-sci.c: In function ‘sci_dma_rx_submit’:
./include/linux/spinlock.h:288:3: warning: ‘flags’ may be used
uninitialized in this function [-Wmaybe-uninitialized]
_raw_spin_unlock_irqrestore(lock, flags); \
^~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/tty/serial/sh-sci.c:1353:16: note: ‘flags’ was declared here
unsigned long flags;
^~~~~

Signed-off-by: Charles Oliveira <18oliveira.charles@gmail.com>
---
drivers/tty/serial/sh-sci.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/tty/serial/sh-sci.c b/drivers/tty/serial/sh-sci.c
index abc705716aa0..a6af73eaec11 100644
--- a/drivers/tty/serial/sh-sci.c
+++ b/drivers/tty/serial/sh-sci.c
@@ -1350,7 +1350,7 @@ static int sci_dma_rx_submit(struct sci_port *s, bool port_lock_held)
{
struct dma_chan *chan = s->chan_rx;
struct uart_port *port = &s->port;
- unsigned long flags;
+ unsigned long uninitialized_var(flags);
int i;

for (i = 0; i < 2; i++) {
--
2.11.0