From a4bd51a562109ecc91d08ae0da9afeb35774292f Mon Sep 17 00:00:00 2001
From: Alexander Motin <mav@FreeBSD.org>
Date: Sun, 24 Oct 2010 18:53:16 +0000
Subject: [PATCH] Make da driver to handle some probably broken Android
 devices, returning zero media and sector size instead of "Medium not present"
 error, until some confirmation button is tapped on device.

---
 sys/cam/scsi/scsi_da.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/sys/cam/scsi/scsi_da.c b/sys/cam/scsi/scsi_da.c
index 7729ecc5ef54..b3b968cc8324 100644
--- a/sys/cam/scsi/scsi_da.c
+++ b/sys/cam/scsi/scsi_da.c
@@ -1667,7 +1667,10 @@ dadone(struct cam_periph *periph, union ccb *done_ccb)
 			 * give them an 'illegal' value we'll avoid that
 			 * here.
 			 */
-			if (block_size >= MAXPHYS || block_size == 0) {
+			if (block_size == 0 && maxsector == 0) {
+				snprintf(announce_buf, sizeof(announce_buf),
+				        "0MB (no media?)");
+			} else if (block_size >= MAXPHYS || block_size == 0) {
 				xpt_print(periph->path,
 				    "unsupportable block size %ju\n",
 				    (uintmax_t) block_size);