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path: root/drivers/pcmcia/pcmcia_resource.c
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Diffstat (limited to 'drivers/pcmcia/pcmcia_resource.c')
-rw-r--r--drivers/pcmcia/pcmcia_resource.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/pcmcia/pcmcia_resource.c b/drivers/pcmcia/pcmcia_resource.c
index f365ecb..f0de7b8 100644
--- a/drivers/pcmcia/pcmcia_resource.c
+++ b/drivers/pcmcia/pcmcia_resource.c
@@ -419,7 +419,9 @@ static int pcmcia_release_irq(struct pcmcia_device *p_dev, irq_req_t *req)
dev_dbg(&s->dev, "IRQ attributes must match assigned ones\n");
return -EINVAL;
}
+ mutex_lock(&s->ops_mutex);
if (s->irq.AssignedIRQ != req->AssignedIRQ) {
+ mutex_unlock(&s->ops_mutex);
dev_dbg(&s->dev, "IRQ must match assigned one\n");
return -EINVAL;
}
@@ -434,6 +436,7 @@ static int pcmcia_release_irq(struct pcmcia_device *p_dev, irq_req_t *req)
#ifdef CONFIG_PCMCIA_PROBE
pcmcia_used_irq[req->AssignedIRQ]--;
#endif
+ mutex_unlock(&s->ops_mutex);
return 0;
} /* pcmcia_release_irq */