+/**
+ * sd_read_thin_provisioning - Query thin provisioning VPD page
+ * @disk: disk to query
+ */
+static void sd_read_thin_provisioning(struct scsi_disk *sdkp)
+{
+ unsigned char *buffer;
+ const int vpd_len = 8;
+
+ if (sdkp->thin_provisioning == 0)
+ return;
+
+ buffer = kmalloc(vpd_len, GFP_KERNEL);
+
+ if (!buffer || scsi_get_vpd_page(sdkp->device, 0xb2, buffer, vpd_len))
+ goto out;
+
+ sdkp->tpvpd = 1;
+ sdkp->tpu = (buffer[5] >> 7) & 1; /* UNMAP */
+ sdkp->tpws = (buffer[5] >> 6) & 1; /* WRITE SAME(16) with UNMAP */
+
+ out:
+ kfree(buffer);
+}
+