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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fc
fc_encode.h
fc_frame.h
fcoe_sysfs.h
iscsi_if.h
iscsi_proto.h
Kbuild
libfc.h
libfcoe.h
libiscsi.h
libiscsi_tcp.h
libsas.h
libsrp.h
osd_attributes.h
osd_initiator.h
osd_ore.h
osd_protocol.h
osd_sec.h
osd_sense.h
osd_types.h
sas.h
sas_ata.h
scsi.h
scsi_bsg_fc.h
scsi_bsg_iscsi.h
scsi_cmnd.h
scsi_dbg.h
scsi_device.h
scsi_devinfo.h
scsi_dh.h
scsi_driver.h
scsi_eh.h
scsi_host.h
scsi_ioctl.h
scsi_netlink.h
scsi_netlink_fc.h
scsi_scan.h
scsi_tcq.h
scsi_tgt.h
scsi_tgt_if.h
scsi_transport.h
scsi_transport_fc.h
scsi_transport_iscsi.h
scsi_transport_sas.h
scsi_transport_spi.h
scsi_transport_srp.h
scsicam.h
sg.h
srp.h