V4L/DVB (13639): ir-sysfs: Properly protect rc_tab changes with a lock
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/drivers/media/IR/ir-sysfs.c b/drivers/media/IR/ir-sysfs.c
index a967381..d73589a 100644
--- a/drivers/media/IR/ir-sysfs.c
+++ b/drivers/media/IR/ir-sysfs.c
@@ -79,6 +79,7 @@
struct ir_input_dev *ir_dev = dev_get_drvdata(d);
enum ir_type ir_type = IR_TYPE_UNKNOWN;
int rc = -EINVAL;
+ unsigned long flags;
char *buf;
buf = strsep((char **) &data, "\n");
@@ -104,7 +105,9 @@
return -EINVAL;
}
+ spin_lock_irqsave(&ir_dev->rc_tab.lock, flags);
ir_dev->rc_tab.ir_type = ir_type;
+ spin_unlock_irqrestore(&ir_dev->rc_tab.lock, flags);
IR_dprintk(1, "Current protocol is %ld\n", ir_type);