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usb-storage: add new no_read_capacity_16 quirk 

Some Rockbox based mp4 players will crash when ever they see a
read_capacity_16 scsi command.  So add a new US_FL which tells the scsi sd
driver to not issue any read_capacity_16 scsi commands.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Cc: James Bottomley <James.Bottomley@HansenPartnership.com>
Cc: Alan Stern <stern@rowland.harvard.edu>
Cc: Matthew Dharm <mdharm-usb@one-eyed-alien.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Hans de Goede 2010-10-01 14:20:11 -07:00 committed by Greg Kroah-Hartman
parent 5ce524bdff
commit 00914025cc
3 changed files with 9 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/usb/storage/scsiglue.c
View File

@ -209,6 +209,10 @@ static int slave_configure(struct scsi_device *sdev)
if (us->fflags & US_FL_CAPACITY_HEURISTICS)
sdev->guess_capacity = 1;
/* Some devices cannot handle READ_CAPACITY_16 */
if (us->fflags & US_FL_NO_READ_CAPACITY_16)
sdev->no_read_capacity_16 = 1;
/* assume SPC3 or latter devices support sense size > 18 */
if (sdev->scsi_level > SCSI_SPC_2)
us->fflags |= US_FL_SANE_SENSE;

3
drivers/usb/storage/unusual_devs.h
View File

@ -877,7 +877,8 @@ UNUSUAL_DEV( 0x071b, 0x3203, 0x0000, 0x0000,
"RockChip",
"MP3",
USB_SC_DEVICE, USB_PR_DEVICE, NULL,
US_FL_NO_WP_DETECT | US_FL_MAX_SECTORS_64),
US_FL_NO_WP_DETECT | US_FL_MAX_SECTORS_64 |
US_FL_NO_READ_CAPACITY_16),
/* Reported by Jean-Baptiste Onofre <jb@nanthrax.net>
* Support the following product :

4
include/linux/usb_usual.h
View File

@ -60,7 +60,9 @@
US_FLAG(BAD_SENSE, 0x00020000) \
/* Bad Sense (never more than 18 bytes) */ \
US_FLAG(NO_READ_DISC_INFO, 0x00040000) \
/* cannot handle READ_DISC_INFO */
/* cannot handle READ_DISC_INFO */ \
US_FLAG(NO_READ_CAPACITY_16, 0x00080000) \
/* cannot handle READ_CAPACITY_16 */
#define US_FLAG(name, value) US_FL_##name = value ,
enum { US_DO_ALL_FLAGS };