Alan Stern 6a0bdffa00 SCSI & usb-storage: add try_rc_10_first flag ... Several bug reports have been received recently for USB mass-storage devices that don't handle READ CAPACITY(16) commands properly. They report bogus sizes, in some cases becoming unusable as a result. The bugs were triggered by commit 09b6b51b0b (SCSI & usb-storage: add flags for VPD pages and REPORT LUNS), which caused usb-storage to stop overriding the SCSI level reported by devices. By default, the sd driver will try READ CAPACITY(16) first for any device whose level is above SCSI_SPC_2. It seems likely that any device large enough to require the use of READ CAPACITY(16) (i.e., 2 TB or more) would be able to handle READ CAPACITY(10) commands properly. Indeed, I don't know of any devices that don't handle READ CAPACITY(10) properly. Therefore this patch (as1559) adds a new flag telling the sd driver to try READ CAPACITY(10) before READ CAPACITY(16), and sets this flag for every USB mass-storage device. If a device really is larger than 2 TB, sd will fall back to READ CAPACITY(16) just as it used to. This fixes Bugzilla #43391. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Acked-by: Hans de Goede <hdegoede@redhat.com> CC: "James E.J. Bottomley" <JBottomley@parallels.com> CC: Matthew Dharm <mdharm-usb@one-eyed-alien.net> Cc: stable <stable@vger.kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2012-06-22 22:05:31 -07:00
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acpi	ACPI: fix acpi_bus.h build warnings when ACPI is not enabled	2012-06-04 00:29:11 -04:00
asm-generic	Merge branches 'sh/urgent', 'sh/core', 'sh/clockevents', 'sh/asm-generic' and 'sh/trivial' into sh-fixes-for-linus	2012-06-13 12:01:33 +09:00
crypto
drm	drm: increase DRM_OBJECT_MAX_PROPERTY to 24	2012-06-12 15:36:31 +01:00
keys
linux	swap: fix shmem swapping when more than 8 areas	2012-06-15 21:48:14 -07:00
math-emu
media
memory
misc
mtd
net	bonding: Fix corrupted queue_mapping	2012-06-12 15:29:21 -07:00
pcmcia
rdma
rxrpc
scsi	SCSI & usb-storage: add try_rc_10_first flag	2012-06-22 22:05:31 -07:00
sound
target	target: Add TFO->put_session() caller for HW fabric session shutdown	2012-06-12 19:33:05 -07:00
trace	rcu: Update RCU_FAST_NO_HZ tracing for lazy callbacks	2012-06-06 20:43:27 -07:00
video	fbdev updates for 3.5	2012-06-01 16:57:51 -07:00
xen
Kbuild