1 files changed, 7 insertions, 2 deletions

diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
index 60e78bef469..2ad4dda6d4a 100644
--- a/drivers/ata/libata-core.c
+++ b/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;
@@ -3700,11 +3700,16 @@ int ata_dev_revalidate(struct ata_device *dev, unsigned int readid_flags)
                 goto fail;
 
         /* verify n_sectors hasn't changed */
-        if (dev->class == ATA_DEV_ATA && dev->n_sectors != n_sectors) {
+        if (dev->class == ATA_DEV_ATA && n_sectors &&
+            dev->n_sectors != n_sectors) {
                 ata_dev_printk(dev, KERN_INFO, "n_sectors mismatch "
                                "%llu != %llu\n",
                                (unsigned long long)n_sectors,
                                (unsigned long long)dev->n_sectors);
+
+                /* restore original n_sectors */
+                dev->n_sectors = n_sectors;
+
                 rc = -ENODEV;
                 goto fail;
         }