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V4L/DVB (13639): ir-sysfs: Properly protect rc_tab changes with a lock

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Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Mauro Carvalho Chehab 2009-12-14 02:56:15 -03:00
parent d4b778d368
commit eecee32ac2
1 changed files with 3 additions and 0 deletions
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3
drivers/media/IR/ir-sysfs.c
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@ -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);