1 files changed, 17 insertions, 13 deletions

diff --git a/drivers/ide/ide-cd.c b/drivers/ide/ide-cd.c
index e617cf08aef6..89a112d513ad 100644
--- a/drivers/ide/ide-cd.c
+++ b/drivers/ide/ide-cd.c
@@ -66,11 +66,11 @@ static struct cdrom_info *ide_cd_get(struct gendisk *disk)
 	mutex_lock(&idecd_ref_mutex);
 	cd = ide_cd_g(disk);
 	if (cd) {
-		kref_get(&cd->kref);
-		if (ide_device_get(cd->drive)) {
-			kref_put(&cd->kref, ide_cd_release);
+		if (ide_device_get(cd->drive))
 			cd = NULL;
-		}
+		else
+			kref_get(&cd->kref);
+
 	}
 	mutex_unlock(&idecd_ref_mutex);
 	return cd;
@@ -78,9 +78,11 @@ static struct cdrom_info *ide_cd_get(struct gendisk *disk)
 
 static void ide_cd_put(struct cdrom_info *cd)
 {
+	ide_drive_t *drive = cd->drive;
+
 	mutex_lock(&idecd_ref_mutex);
-	ide_device_put(cd->drive);
 	kref_put(&cd->kref, ide_cd_release);
+	ide_device_put(drive);
 	mutex_unlock(&idecd_ref_mutex);
 }
 
@@ -1305,6 +1307,7 @@ static int cdrom_read_capacity(ide_drive_t *drive, unsigned long *capacity,
 	int stat;
 	unsigned char cmd[BLK_MAX_CDB];
 	unsigned len = sizeof(capbuf);
+	u32 blocklen;
 
 	memset(cmd, 0, BLK_MAX_CDB);
 	cmd[0] = GPCMD_READ_CDVD_CAPACITY;
@@ -1317,23 +1320,24 @@ static int cdrom_read_capacity(ide_drive_t *drive, unsigned long *capacity,
 	/*
 	 * Sanity check the given block size
 	 */
-	switch (capbuf.blocklen) {
-	case __constant_cpu_to_be32(512):
-	case __constant_cpu_to_be32(1024):
-	case __constant_cpu_to_be32(2048):
-	case __constant_cpu_to_be32(4096):
+	blocklen = be32_to_cpu(capbuf.blocklen);
+	switch (blocklen) {
+	case 512:
+	case 1024:
+	case 2048:
+	case 4096:
 		break;
 	default:
 		printk(KERN_ERR "%s: weird block size %u\n",
-			drive->name, capbuf.blocklen);
+			drive->name, blocklen);
 		printk(KERN_ERR "%s: default to 2kb block size\n",
 			drive->name);
-		capbuf.blocklen = __constant_cpu_to_be32(2048);
+		blocklen = 2048;
 		break;
 	}
 
 	*capacity = 1 + be32_to_cpu(capbuf.lba);
-	*sectors_per_frame = be32_to_cpu(capbuf.blocklen) >> SECTOR_BITS;
+	*sectors_per_frame = blocklen >> SECTOR_BITS;
 	return 0;
 }