infiniband: more BKL pushdown

[linux-2.6-omap-h63xx.git] / drivers / infiniband / core / user_mad.c

diff --git a/drivers/infiniband/core/user_mad.c b/drivers/infiniband/core/user_mad.c
index 3aa2db54eae4058266919049b848238aa59e4a87..1fc17940a765e7062476a7720f533864a3de9981 100644 (file)
--- a/drivers/infiniband/core/user_mad.c
+++ b/drivers/infiniband/core/user_mad.c
@@ -47,6 +47,7 @@
 #include <linux/kref.h>
 #include <linux/compat.h>
 #include <linux/semaphore.h>
+#include <linux/smp_lock.h>
 
 #include <asm/uaccess.h>
 
@@ -783,14 +784,17 @@ static int ib_umad_open(struct inode *inode, struct file *filp)
        struct ib_umad_file *file;
        int ret = 0;
 
+       lock_kernel();
        spin_lock(&port_lock);
        port = umad_port[iminor(inode) - IB_UMAD_MINOR_BASE];
        if (port)
                kref_get(&port->umad_dev->ref);
        spin_unlock(&port_lock);
 
-       if (!port)
+       if (!port) {
+               unlock_kernel();
                return -ENXIO;
+       }
 
        mutex_lock(&port->file_mutex);
 
@@ -819,6 +823,7 @@ static int ib_umad_open(struct inode *inode, struct file *filp)
 
 out:
        mutex_unlock(&port->file_mutex);
+       unlock_kernel();
        return ret;
 }