libata: adjust libata to ignore errors after spinup

Adjust libata to ignore errors after spinup

This patch is to ignore errors from the spinup attempt if the drive is
in the "standby id" state.
Signed-off-by: NRyan Power <rpower@sysreset.com>
Acked-by: NMark Lord <liml@rtr.ca>
Cc: Jeff Garzik <jeff@garzik.org>
Cc: Tejun Heo <htejun@gmail.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NJeff Garzik <jeff@garzik.org>

drivers/ata/libata-core.c

@@ -1723,7 +1723,7 @@ int ata_dev_read_id(struct ata_device *dev, unsigned int *p_class,
 		tf.protocol = ATA_PROT_NODATA;
 		tf.flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE;
 		err_mask = ata_exec_internal(dev, &tf, NULL, DMA_NONE, NULL, 0);
-		if (err_mask) {
+		if (err_mask && id[2] != 0x738c) {
 			rc = -EIO;
 			reason = "SPINUP failed";
 			goto err_out;