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authorMauro Carvalho Chehab <mchehab@redhat.com>2009-12-14 02:56:15 -0300
committerMauro Carvalho Chehab <mchehab@redhat.com>2010-02-26 15:10:24 -0300
commiteecee32ac2c4b00b76cc8d99fd8d2b9fd54a283d (patch)
treeb76c3a68f773c7575b982b2f2f0dd70894f4306c
parentd4b778d36889b4d51d79a99f8a96e110def8541c (diff)
V4L/DVB (13639): ir-sysfs: Properly protect rc_tab changes with a lock
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
-rw-r--r--drivers/media/IR/ir-sysfs.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/media/IR/ir-sysfs.c b/drivers/media/IR/ir-sysfs.c
index a96738135bb..d73589ad55e 100644
--- a/drivers/media/IR/ir-sysfs.c
+++ b/drivers/media/IR/ir-sysfs.c
@@ -79,6 +79,7 @@ static ssize_t store_protocol(struct device *d,
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 @@ static ssize_t store_protocol(struct device *d,
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);