diff options
Diffstat (limited to 'drivers/scsi/ch.c')
| -rw-r--r-- | drivers/scsi/ch.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/drivers/scsi/ch.c b/drivers/scsi/ch.c index d6532187f616..a15474eef5f7 100644 --- a/drivers/scsi/ch.c +++ b/drivers/scsi/ch.c @@ -22,7 +22,6 @@ #include <linux/chio.h> /* here are all the ioctls */ #include <linux/mutex.h> #include <linux/idr.h> -#include <linux/smp_lock.h> #include <linux/slab.h> #include <scsi/scsi.h> @@ -44,6 +43,7 @@ MODULE_LICENSE("GPL"); MODULE_ALIAS_CHARDEV_MAJOR(SCSI_CHANGER_MAJOR); MODULE_ALIAS_SCSI_DEVICE(TYPE_MEDIUM_CHANGER); +static DEFINE_MUTEX(ch_mutex); static int init = 1; module_param(init, int, 0444); MODULE_PARM_DESC(init, \ @@ -581,19 +581,19 @@ ch_open(struct inode *inode, struct file *file) scsi_changer *ch; int minor = iminor(inode); - lock_kernel(); + mutex_lock(&ch_mutex); spin_lock(&ch_index_lock); ch = idr_find(&ch_index_idr, minor); if (NULL == ch || scsi_device_get(ch->device)) { spin_unlock(&ch_index_lock); - unlock_kernel(); + mutex_unlock(&ch_mutex); return -ENXIO; } spin_unlock(&ch_index_lock); file->private_data = ch; - unlock_kernel(); + mutex_unlock(&ch_mutex); return 0; } @@ -981,6 +981,7 @@ static const struct file_operations changer_fops = { #ifdef CONFIG_COMPAT .compat_ioctl = ch_ioctl_compat, #endif + .llseek = noop_llseek, }; static int __init init_ch_module(void) |