@@ -868,6 +868,9 @@ static int uas_slave_configure(struct scsi_device *sdev)
if (devinfo->flags & US_FL_NO_READ_CAPACITY_16)
sdev->no_read_capacity_16 = 1;
+ /* Some disks cannot handle WRITE_SAME */
+ if (devinfo->flags & US_FL_NO_SAME)
+ sdev->no_write_same = 1;
/*
* Some disks return the total number of blocks in response
* to READ CAPACITY rather than the highest block number.
@@ -35,12 +35,15 @@ UNUSUAL_DEV(0x054c, 0x087d, 0x0000, 0x9999,
USB_SC_DEVICE, USB_PR_DEVICE, NULL,
US_FL_NO_REPORT_OPCODES),
-/* Reported-by: Julian Groß <julian.g@posteo.de> */
+/*
+ * Initially Reported-by: Julian Groß <julian.g@posteo.de>
+ * Further reports David C. Partridge <david.partridge@perdrix.co.uk>
+ */
UNUSUAL_DEV(0x059f, 0x105f, 0x0000, 0x9999,
"LaCie",
"2Big Quadra USB3",
USB_SC_DEVICE, USB_PR_DEVICE, NULL,
- US_FL_NO_REPORT_OPCODES),
+ US_FL_NO_REPORT_OPCODES | US_FL_NO_SAME),
/*
* Apricorn USB3 dongle sometimes returns "USBSUSBSUSBS" in response to SCSI
@@ -541,6 +541,9 @@ void usb_stor_adjust_quirks(struct usb_device *udev, unsigned long *fflags)
case 'j':
f |= US_FL_NO_REPORT_LUNS;
break;
+ case 'k':
+ f |= US_FL_NO_SAME;
+ break;
case 'l':
f |= US_FL_NOT_LOCKABLE;
break;
@@ -84,6 +84,8 @@
/* Cannot handle REPORT_LUNS */ \
US_FLAG(ALWAYS_SYNC, 0x20000000) \
/* lies about caching, so always sync */ \
+ US_FLAG(NO_SAME, 0x40000000) \
+ /* Cannot handle WRITE_SAME */ \
#define US_FLAG(name, value) US_FL_##name = value ,
enum { US_DO_ALL_FLAGS };
UAS does not share the pessimistic assumption storage is making that devices cannot deal with WRITE_SAME. A few devices supported by UAS, are reported to not deal well with WRITE_SAME. Those need a quirk. Add it to the device that needs it. Signed-off-by: Oliver Neukum <oneukum@suse.com> Reported-by: David C. Partridge <david.partridge@perdrix.co.uk> --- drivers/usb/storage/uas.c | 3 +++ drivers/usb/storage/unusual_uas.h | 7 +++++-- drivers/usb/storage/usb.c | 3 +++ include/linux/usb_usual.h | 2 ++ 4 files changed, 13 insertions(+), 2 deletions(-)