libata-zpodd: must use ata_tf_init()

There are  some SATA controllers which have both devices 0 and 1 but this module
just zeroes out taskfile and sets then ATA_TFLAG_DEVICE (not sure that's needed)
which could  lead to a wrong device being selected just before issuing command.
Thus we should  call ata_tf_init()  which sets  up the device register value
properly, like  all other users of ata_exec_internal() do...

Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: stable@vger.kernel.org
diff --git a/drivers/ata/libata-zpodd.c b/drivers/ata/libata-zpodd.c
index 90b159b..cd8daf4 100644
--- a/drivers/ata/libata-zpodd.c
+++ b/drivers/ata/libata-zpodd.c
@@ -32,13 +32,14 @@
 
 static int eject_tray(struct ata_device *dev)
 {
-	struct ata_taskfile tf = {};
+	struct ata_taskfile tf;
 	const char cdb[] = {  GPCMD_START_STOP_UNIT,
 		0, 0, 0,
 		0x02,     /* LoEj */
 		0, 0, 0, 0, 0, 0, 0,
 	};
 
+	ata_tf_init(dev, &tf);
 	tf.flags = ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE;
 	tf.command = ATA_CMD_PACKET;
 	tf.protocol = ATAPI_PROT_NODATA;
@@ -52,8 +53,7 @@
 	char buf[16];
 	unsigned int ret;
 	struct rm_feature_desc *desc = (void *)(buf + 8);
-	struct ata_taskfile tf = {};
-
+	struct ata_taskfile tf;
 	char cdb[] = {  GPCMD_GET_CONFIGURATION,
 			2,      /* only 1 feature descriptor requested */
 			0, 3,   /* 3, removable medium feature */
@@ -62,6 +62,7 @@
 			0, 0, 0,
 	};
 
+	ata_tf_init(dev, &tf);
 	tf.flags = ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE;
 	tf.command = ATA_CMD_PACKET;
 	tf.protocol = ATAPI_PROT_PIO;