aacraid: cdev lock_kernel() pushdown

Signed-off-by: Jonathan Corbet <corbet@lwn.net>

diff --git a/drivers/scsi/aacraid/linit.c b/drivers/scsi/aacraid/linit.c
index 1f7c83607f84729a918c640e83a67daf9e45643e..68c140e826735287f007f91da091de3e17899a48 100644 (file)
--- a/drivers/scsi/aacraid/linit.c
+++ b/drivers/scsi/aacraid/linit.c
@@ -38,6 +38,7 @@
 #include <linux/moduleparam.h>
 #include <linux/pci.h>
 #include <linux/slab.h>
+#include <linux/smp_lock.h>
 #include <linux/spinlock.h>
 #include <linux/syscalls.h>
 #include <linux/delay.h>
@@ -667,6 +668,7 @@ static int aac_cfg_open(struct inode *inode, struct file *file)
        unsigned minor_number = iminor(inode);
        int err = -ENODEV;
 
+       lock_kernel();  /* BKL pushdown: nothing else protects this list */
        list_for_each_entry(aac, &aac_devices, entry) {
                if (aac->id == minor_number) {
                        file->private_data = aac;
@@ -674,6 +676,7 @@ static int aac_cfg_open(struct inode *inode, struct file *file)
                        break;
                }
        }
+       unlock_kernel();
 
        return err;
 }