If there is a more official channel through which to submit patches, I am not
aware of it, so I hope nobody will mind if I post this patch here.
This patch adds support for the Freecom FS-1 slimline external CD-RW drive.
Ralf Rösch hinted at an unusual_dev entry using the US_FL_FIX_INQUIRY flag,
since another external Freecom device apparently needs that flag. However,
the faked INQUIRY response always returns a SCSI peripheral type of 0x00,
indicating a direct-access disk. This new device is apparently the first
CD-ROM device to require the inquiry fix, so I have simply added a
US_FL_FIX_INQUIRY_CD flag and corresponding code alongside the
US_FL_FIX_INQUIRY code.
Very best wishes,
-Steve
--
Steve Purcell
http://advogato.org/person/purcell
diff -Naur kernel-source-2.4.21-pre3/drivers/usb/storage/unusual_devs.h kernel-source-2.4.21-pre3.patched/drivers/usb/storage/unusual_devs.h
--- kernel-source-2.4.21-pre3/drivers/usb/storage/unusual_devs.h 2003-01-24 13:53:31.000000000 +0100
+++ kernel-source-2.4.21-pre3.patched/drivers/usb/storage/unusual_devs.h 2003-01-24 13:01:09.000000000 +0100
@@ -411,6 +411,11 @@
US_SC_QIC, US_PR_FREECOM, freecom_init, 0),
#endif
+UNUSUAL_DEV( 0x07ab, 0xfc03, 0x0000, 0x9999,
+ "Freecom",
+ "USB FS-1 CD-RW",
+ US_SC_8020, US_PR_BULK, NULL, US_FL_FIX_INQUIRY_CD),
+
UNUSUAL_DEV( 0x07af, 0x0004, 0x0100, 0x0133,
"Microtech",
"USB-SCSI-DB25",
diff -Naur kernel-source-2.4.21-pre3/drivers/usb/storage/usb.c kernel-source-2.4.21-pre3.patched/drivers/usb/storage/usb.c
--- kernel-source-2.4.21-pre3/drivers/usb/storage/usb.c 2002-11-29 17:31:59.000000000 +0100
+++ kernel-source-2.4.21-pre3.patched/drivers/usb/storage/usb.c 2003-01-24 12:48:51.000000000 +0100
@@ -453,6 +453,15 @@
US_DEBUGP("Faking INQUIRY command\n");
fill_inquiry_response(us, data_ptr, 36);
us->srb->result = GOOD << 1;
+ } else if ((us->srb->cmnd[0] == INQUIRY) &&
+ (us->flags & US_FL_FIX_INQUIRY_CD)) {
+ unsigned char data_ptr[36] = {
+ 0x05, 0x80, 0x02, 0x02,
+ 0x1F, 0x00, 0x00, 0x00};
+
+ US_DEBUGP("Faking INQUIRY command for CD-ROM\n");
+ fill_inquiry_response(us, data_ptr, 36);
+ us->srb->result = GOOD << 1;
} else {
/* we've got a command, let's do it! */
US_DEBUG(usb_stor_show_command(us->srb));
diff -Naur kernel-source-2.4.21-pre3/drivers/usb/storage/usb.h kernel-source-2.4.21-pre3.patched/drivers/usb/storage/usb.h
--- kernel-source-2.4.21-pre3/drivers/usb/storage/usb.h 2002-11-29 17:32:19.000000000 +0100
+++ kernel-source-2.4.21-pre3.patched/drivers/usb/storage/usb.h 2003-01-24 13:01:07.000000000 +0100
@@ -101,6 +101,8 @@
#define US_FL_IGNORE_SER 0x00000010 /* Ignore the serial number given */
#define US_FL_SCM_MULT_TARG 0x00000020 /* supports multiple targets */
#define US_FL_FIX_INQUIRY 0x00000040 /* INQUIRY response needs fixing */
+#define US_FL_FIX_INQUIRY_CD 0x00000080 /* INQUIRY response needs fixing for CD
+ROM */
#define USB_STOR_STRING_LEN 32
