1 files changed, 19 insertions, 13 deletions

diff --git a/drivers/ide/ide-tape.c b/drivers/ide/ide-tape.c
index 6962ca4891a1..82c2afe4d28a 100644
--- a/drivers/ide/ide-tape.c
+++ b/drivers/ide/ide-tape.c
@@ -322,23 +322,29 @@ static struct class *idetape_sysfs_class;
 #define ide_tape_g(disk) \
         container_of((disk)->private_data, struct ide_tape_obj, driver)
 
+static void ide_tape_release(struct kref *);
+
 static struct ide_tape_obj *ide_tape_get(struct gendisk *disk)
 {
         struct ide_tape_obj *tape = NULL;
 
         mutex_lock(&idetape_ref_mutex);
         tape = ide_tape_g(disk);
-        if (tape)
+        if (tape) {
                 kref_get(&tape->kref);
+                if (ide_device_get(tape->drive)) {
+                        kref_put(&tape->kref, ide_tape_release);
+                        tape = NULL;
+                }
+        }
         mutex_unlock(&idetape_ref_mutex);
         return tape;
 }
 
-static void ide_tape_release(struct kref *);
-
 static void ide_tape_put(struct ide_tape_obj *tape)
 {
         mutex_lock(&idetape_ref_mutex);
+        ide_device_put(tape->drive);
         kref_put(&tape->kref, ide_tape_release);
         mutex_unlock(&idetape_ref_mutex);
 }
@@ -649,10 +655,10 @@ static void ide_tape_callback(ide_drive_t *drive)
                         uptodate = 0;
                 } else {
                         debug_log(DBG_SENSE, "Block Location - %u\n",
-                                        be32_to_cpu(*(u32 *)&readpos[4]));
+                                        be32_to_cpup((__be32 *)&readpos[4]));
 
                         tape->partition = readpos[1];
-                        tape->first_frame = be32_to_cpu(*(u32 *)&readpos[4]);
+                        tape->first_frame = be32_to_cpup((__be32 *)&readpos[4]);
                         set_bit(IDE_AFLAG_ADDRESS_VALID, &drive->atapi_flags);
                 }
         }
@@ -2375,23 +2381,23 @@ static void idetape_get_mode_sense_results(ide_drive_t *drive)
         caps = pc.buf + 4 + pc.buf[3];
 
         /* convert to host order and save for later use */
-        speed = be16_to_cpu(*(u16 *)&caps[14]);
-        max_speed = be16_to_cpu(*(u16 *)&caps[8]);
+        speed = be16_to_cpup((__be16 *)&caps[14]);
+        max_speed = be16_to_cpup((__be16 *)&caps[8]);
 
-        put_unaligned(max_speed, (u16 *)&caps[8]);
-        put_unaligned(be16_to_cpu(*(u16 *)&caps[12]), (u16 *)&caps[12]);
-        put_unaligned(speed, (u16 *)&caps[14]);
-        put_unaligned(be16_to_cpu(*(u16 *)&caps[16]), (u16 *)&caps[16]);
+        *(u16 *)&caps[8] = max_speed;
+        *(u16 *)&caps[12] = be16_to_cpup((__be16 *)&caps[12]);
+        *(u16 *)&caps[14] = speed;
+        *(u16 *)&caps[16] = be16_to_cpup((__be16 *)&caps[16]);
 
         if (!speed) {
                 printk(KERN_INFO "ide-tape: %s: invalid tape speed "
                                 "(assuming 650KB/sec)\n", drive->name);
-                put_unaligned(650, (u16 *)&caps[14]);
+                *(u16 *)&caps[14] = 650;
         }
         if (!max_speed) {
                 printk(KERN_INFO "ide-tape: %s: invalid max_speed "
                                 "(assuming 650KB/sec)\n", drive->name);
-                put_unaligned(650, (u16 *)&caps[8]);
+                *(u16 *)&caps[8] = 650;
         }
 
         memcpy(&tape->caps, caps, 20);