pcmcia: properly lock skt->irq, skt->irq_mask

Tested-by: Wolfram Sang <w.sang@pengutronix.de>
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>

1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/pcmcia/socket_sysfs.c b/drivers/pcmcia/socket_sysfs.c
index 537d79305e7a..1cba9d38d813 100644
--- a/drivers/pcmcia/socket_sysfs.c
+++ b/drivers/pcmcia/socket_sysfs.c
@@ -167,7 +167,9 @@ static ssize_t pccard_store_irq_mask(struct device *dev,
         ret = sscanf(buf, "0x%x\n", &mask);
 
         if (ret == 1) {
+                mutex_lock(&s->ops_mutex);
                 s->irq_mask &= mask;
+                mutex_unlock(&s->ops_mutex);
                 ret = 0;
         }