PNP: Convert pnp_lock into a mutex

pnp_lock is a spinlock, but it is only acquired from process context,
so it may be a mutex just fine.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

1 files changed, 5 insertions, 5 deletions

diff --git a/drivers/pnp/driver.c b/drivers/pnp/driver.c
index 4e57d3370368..153a493b5413 100644
--- a/drivers/pnp/driver.c
+++ b/drivers/pnp/driver.c
@@ -58,22 +58,22 @@ static const struct pnp_device_id *match_device(struct pnp_driver *drv,
 
 int pnp_device_attach(struct pnp_dev *pnp_dev)
 {
-        spin_lock(&pnp_lock);
+        mutex_lock(&pnp_lock);
         if (pnp_dev->status != PNP_READY) {
-                spin_unlock(&pnp_lock);
+                mutex_unlock(&pnp_lock);
                 return -EBUSY;
         }
         pnp_dev->status = PNP_ATTACHED;
-        spin_unlock(&pnp_lock);
+        mutex_unlock(&pnp_lock);
         return 0;
 }
 
 void pnp_device_detach(struct pnp_dev *pnp_dev)
 {
-        spin_lock(&pnp_lock);
+        mutex_lock(&pnp_lock);
         if (pnp_dev->status == PNP_ATTACHED)
                 pnp_dev->status = PNP_READY;
-        spin_unlock(&pnp_lock);
+        mutex_unlock(&pnp_lock);
         pnp_disable_dev(pnp_dev);
 }