pktcdvd: push BKL down into driver

Push the lock_kernel down into the driver and switch to unlocked_ioctl

[akpm@linux-foundation.org: build fix]
Signed-off-by: Alan Cox <alan@redhat.com>
Acked-by: Peter Osterlund <petero2@telia.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

1 files changed, 25 insertions, 10 deletions

diff --git a/drivers/block/pktcdvd.c b/drivers/block/pktcdvd.c
index 589850cff359..85e44d07eab8 100644
--- a/drivers/block/pktcdvd.c
+++ b/drivers/block/pktcdvd.c
@@ -49,6 +49,7 @@
 #include <linux/types.h>
 #include <linux/kernel.h>
 #include <linux/kthread.h>
+#include <linux/smp_lock.h>
 #include <linux/errno.h>
 #include <linux/spinlock.h>
 #include <linux/file.h>
@@ -2797,9 +2798,14 @@ out_mem:
         return ret;
 }
 
-static int pkt_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg)
+static long pkt_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 {
-        struct pktcdvd_device *pd = inode->i_bdev->bd_disk->private_data;
+        struct inode *inode = file->f_path.dentry->d_inode;
+        struct pktcdvd_device *pd;
+        long ret;
+
+        lock_kernel();
+        pd = inode->i_bdev->bd_disk->private_data;
 
         VPRINTK("pkt_ioctl: cmd %x, dev %d:%d\n", cmd, imajor(inode), iminor(inode));
 
@@ -2812,7 +2818,8 @@ static int pkt_ioctl(struct inode *inode, struct file *file, unsigned int cmd, u
         case CDROM_LAST_WRITTEN:
         case CDROM_SEND_PACKET:
         case SCSI_IOCTL_SEND_COMMAND:
-                return blkdev_ioctl(pd->bdev->bd_inode, file, cmd, arg);
+                ret = blkdev_ioctl(pd->bdev->bd_inode, file, cmd, arg);
+                break;
 
         case CDROMEJECT:
                 /*
@@ -2821,14 +2828,15 @@ static int pkt_ioctl(struct inode *inode, struct file *file, unsigned int cmd, u
                  */
                 if (pd->refcnt == 1)
                         pkt_lock_door(pd, 0);
-                return blkdev_ioctl(pd->bdev->bd_inode, file, cmd, arg);
+                ret = blkdev_ioctl(pd->bdev->bd_inode, file, cmd, arg);
+                break;
 
         default:
                 VPRINTK(DRIVER_NAME": Unknown ioctl for %s (%x)\n", pd->name, cmd);
-                return -ENOTTY;
+                ret = -ENOTTY;
         }
-
-        return 0;
+        unlock_kernel();
+        return ret;
 }
 
 static int pkt_media_changed(struct gendisk *disk)
@@ -2850,7 +2858,7 @@ static struct block_device_operations pktcdvd_ops = {
         .owner =                THIS_MODULE,
         .open =                 pkt_open,
         .release =              pkt_close,
-        .ioctl =                pkt_ioctl,
+        .unlocked_ioctl =       pkt_ioctl,
         .media_changed =        pkt_media_changed,
 };
 
@@ -3015,7 +3023,8 @@ static void pkt_get_status(struct pkt_ctrl_command *ctrl_cmd)
         mutex_unlock(&ctl_mutex);
 }
 
-static int pkt_ctl_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg)
+static long pkt_ctl_ioctl(struct file *file, unsigned int cmd,
+                                                unsigned long arg)
 {
         void __user *argp = (void __user *)arg;
         struct pkt_ctrl_command ctrl_cmd;
@@ -3032,16 +3041,22 @@ static int pkt_ctl_ioctl(struct inode *inode, struct file *file, unsigned int cm
         case PKT_CTRL_CMD_SETUP:
                 if (!capable(CAP_SYS_ADMIN))
                         return -EPERM;
+                lock_kernel();
                 ret = pkt_setup_dev(new_decode_dev(ctrl_cmd.dev), &pkt_dev);
                 ctrl_cmd.pkt_dev = new_encode_dev(pkt_dev);
+                unlock_kernel();
                 break;
         case PKT_CTRL_CMD_TEARDOWN:
                 if (!capable(CAP_SYS_ADMIN))
                         return -EPERM;
+                lock_kernel();
                 ret = pkt_remove_dev(new_decode_dev(ctrl_cmd.pkt_dev));
+                unlock_kernel();
                 break;
         case PKT_CTRL_CMD_STATUS:
+                lock_kernel();
                 pkt_get_status(&ctrl_cmd);
+                unlock_kernel();
                 break;
         default:
                 return -ENOTTY;
@@ -3054,7 +3069,7 @@ static int pkt_ctl_ioctl(struct inode *inode, struct file *file, unsigned int cm
 
 
 static const struct file_operations pkt_ctl_fops = {
-        .ioctl   = pkt_ctl_ioctl,
+        .unlocked_ioctl  = pkt_ctl_ioctl,
         .owner   = THIS_MODULE,
 };