usb-storage/SCSI: Add broken_fua blacklist flag
authorAlan Stern <stern@rowland.harvard.edu>
Mon, 30 Jun 2014 15:04:21 +0000 (11:04 -0400)
committerBen Hutchings <ben@decadent.org.uk>
Wed, 6 Aug 2014 17:07:33 +0000 (18:07 +0100)
commit27bbd86f9319dbeeb588b8f43fe0ac241ad336ba
tree6dff44ce290fbdca04f458b836cb97ab03b54cdf
parent949ff4d69cf2497e9a0b1302979818cd944af02b
usb-storage/SCSI: Add broken_fua blacklist flag

commit b14bf2d0c0358140041d1c1805a674376964d0e0 upstream.

Some buggy JMicron USB-ATA bridges don't know how to translate the FUA
bit in READs or WRITEs.  This patch adds an entry in unusual_devs.h
and a blacklist flag to tell the sd driver not to use FUA.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Reported-by: Michael Büsch <m@bues.ch>
Tested-by: Michael Büsch <m@bues.ch>
Acked-by: James Bottomley <James.Bottomley@HansenPartnership.com>
CC: Matthew Dharm <mdharm-usb@one-eyed-alien.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
[bwh: Backported to 3.2:
 - Adjust context
 - Use sd_printk() not sd_first_printk()]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
drivers/scsi/sd.c
drivers/usb/storage/scsiglue.c
drivers/usb/storage/unusual_devs.h
include/linux/usb_usual.h
include/scsi/scsi_device.h