1 files changed, 18 insertions, 0 deletions
diff --git a/drivers/scsi/sr_vendor.c b/drivers/scsi/sr_vendor.c
index e3b0ce25162b..17a56c87d383 100644
--- a/drivers/scsi/sr_vendor.c
+++ b/drivers/scsi/sr_vendor.c
@@ -61,6 +61,7 @@
 #define VENDOR_NEC             2
 #define VENDOR_TOSHIBA         3
 #define VENDOR_WRITER          4	/* pre-scsi3 writers */
+#define VENDOR_CYGNAL_85ED     5	/* CD-on-a-chip */
 
 #define VENDOR_TIMEOUT	30*HZ
 
@@ -99,6 +100,23 @@ void sr_vendor_init(Scsi_CD *cd)
 	} else if (!strncmp(vendor, "TOSHIBA", 7)) {
 		cd->vendor = VENDOR_TOSHIBA;
 
+	} else if (!strncmp(vendor, "Beurer", 6) &&
+		   !strncmp(model, "Gluco Memory", 12)) {
+		/* The Beurer GL50 evo uses a Cygnal-manufactured CD-on-a-chip
+		   that only accepts a subset of SCSI commands.  Most of the
+		   not-implemented commands are fine to fail, but a few,
+		   particularly around the MMC or Audio commands, will put the
+		   device into an unrecoverable state, so they need to be
+		   avoided at all costs.
+		*/
+		cd->vendor = VENDOR_CYGNAL_85ED;
+		cd->cdi.mask |= (
+			CDC_MULTI_SESSION |
+			CDC_CLOSE_TRAY | CDC_OPEN_TRAY |
+			CDC_LOCK |
+			CDC_GENERIC_PACKET |
+			CDC_PLAY_AUDIO
+			);
 	}
 #endif
 }