add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/drivers/scsi/sr_vendor.c
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@@ -61,6 +61,7 @@
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 #define VENDOR_NEC             2
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 #define VENDOR_TOSHIBA         3
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 #define VENDOR_WRITER          4	/* pre-scsi3 writers */
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+#define VENDOR_CYGNAL_85ED     5	/* CD-on-a-chip */
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 #define VENDOR_TIMEOUT	30*HZ
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@@ -96,6 +97,23 @@
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 	} else if (!strncmp(vendor, "TOSHIBA", 7)) {
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 		cd->vendor = VENDOR_TOSHIBA;
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+	} else if (!strncmp(vendor, "Beurer", 6) &&
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+		   !strncmp(model, "Gluco Memory", 12)) {
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+		/* The Beurer GL50 evo uses a Cygnal-manufactured CD-on-a-chip
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+		   that only accepts a subset of SCSI commands.  Most of the
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+		   not-implemented commands are fine to fail, but a few,
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+		   particularly around the MMC or Audio commands, will put the
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+		   device into an unrecoverable state, so they need to be
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+		   avoided at all costs.
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+		*/
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+		cd->vendor = VENDOR_CYGNAL_85ED;
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+		cd->cdi.mask |= (
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+			CDC_MULTI_SESSION |
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+			CDC_CLOSE_TRAY | CDC_OPEN_TRAY |
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+			CDC_LOCK |
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+			CDC_GENERIC_PACKET |
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+			CDC_PLAY_AUDIO
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+			);
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 	}
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 }
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