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usb-storage: add quirk for mandatory READ_CAPACITY_16 

Some USB drive enclosures do not correctly report an
overflow condition if they hold a drive with a capacity
over 2TB and are confronted with a READ_CAPACITY_10.
They answer with their capacity modulo 2TB.
The generic layer cannot cope with that. It must be told
to use READ_CAPACITY_16 from the beginning.

Signed-off-by: Oliver Neukum <oneukum@suse.de>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Oliver Neukum 2013-10-14 15:24:55 +02:00 committed by Greg Kroah-Hartman
parent fd8573f582
commit 32c37fc30c
3 changed files with 14 additions and 2 deletions
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5
drivers/usb/storage/scsiglue.c
View File

@ -211,8 +211,11 @@ static int slave_configure(struct scsi_device *sdev)
/*
* Many devices do not respond properly to READ_CAPACITY_16.
* Tell the SCSI layer to try READ_CAPACITY_10 first.
* However some USB 3.0 drive enclosures return capacity
* modulo 2TB. Those must use READ_CAPACITY_16
*/
sdev->try_rc_10_first = 1;
if (!(us->fflags & US_FL_NEEDS_CAP16))
sdev->try_rc_10_first = 1;
/* assume SPC3 or latter devices support sense size > 18 */
if (sdev->scsi_level > SCSI_SPC_2)

7
drivers/usb/storage/unusual_devs.h
View File

@ -1925,6 +1925,13 @@ UNUSUAL_DEV( 0x1652, 0x6600, 0x0201, 0x0201,
USB_SC_DEVICE, USB_PR_DEVICE, NULL,
US_FL_IGNORE_RESIDUE ),
/* Reported by Oliver Neukum <oneukum@suse.com> */
UNUSUAL_DEV( 0x174c, 0x55aa, 0x0100, 0x0100,
"ASMedia",
"AS2105",
USB_SC_DEVICE, USB_PR_DEVICE, NULL,
US_FL_NEEDS_CAP16),
/* Reported by Jesse Feddema <jdfeddema@gmail.com> */
UNUSUAL_DEV( 0x177f, 0x0400, 0x0000, 0x0000,
"Yarvik",

4
include/linux/usb_usual.h
View File

@ -66,7 +66,9 @@
US_FLAG(INITIAL_READ10, 0x00100000) \
/* Initial READ(10) (and others) must be retried */ \
US_FLAG(WRITE_CACHE, 0x00200000) \
/* Write Cache status is not available */
/* Write Cache status is not available */ \
US_FLAG(NEEDS_CAP16, 0x00400000)
/* cannot handle READ_CAPACITY_10 */
#define US_FLAG(name, value) US_FL_##name = value ,
enum { US_DO_ALL_FLAGS };