PATCH: scsi_scan.c: emulate windows behavior

[Matthew Dharm <mdharm-kernel@one-eyed-alien.net>]

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I would have sworn we already patched this, but now I can find no record of
it.

Attached is a one-liner patch to scsi_scan.c, which changes the length of
the INQUIRY data request from 255 bytes to 36 bytes.  This subtle change
makes Linux act more like Win/MacOS and other popular OSes, and reduces
incompatibility with a broad range of out-of-spec devices that will simply
die if asked for more than the required minimum of 36 bytes.

Did we patch this before?  I can't find it in the l-k archives, but I'm
almost positive we have.  I remeber this because this problem plagues some
USB devices, which just crash if you ask for more than 36 bytes of data.

Patch is attached.  Please apply.

Matt

-- 
Matthew Dharm                              Home: mdharm-usb@one-eyed-alien.net 
Maintainer, Linux USB Mass Storage Driver

G:  Let me guess, you started on the 'net with AOL, right?
C:  WOW! d00d! U r leet!
					-- Greg and Customer 
User Friendly, 2/12/1999

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--- linux/drivers/scsi/scsi_scan.old	Tue Nov 13 10:12:19 2001
+++ linux/drivers/scsi/scsi_scan.c	Tue Nov 13 10:13:58 2001
@@ -543,7 +543,7 @@
 		scsi_cmd[1] = 0;	/* SCSI_3 and higher, don't touch */
 	scsi_cmd[2] = 0;
 	scsi_cmd[3] = 0;
-	scsi_cmd[4] = 255;
+	scsi_cmd[4] = 36;		/* 36 bytes, just like Win/MacOS */
 	scsi_cmd[5] = 0;
 	SRpnt->sr_cmd_len = 0;
 	SRpnt->sr_data_direction = SCSI_DATA_READ;

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