usb: storage: Zero CDB out before sending it ...

Since cbw.Length can be less that sizeof(cbw.CDB), add code to zero
the whole struct out to avoid sending random stack data as a part of
payload. There's no known case where this causes a problem, but it's a
reasonable thing to do anyway.

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

usb: storage: Drop struct SCSI_cmd_block ...

All the info we need to pass to transport function can be captured in
a struct us_blk_dev and two byte arrays, so having a dedicated struct
with many unused fields doesn't really buy us anything. Drop the
struct and convert the rest of the code to pass needed data
explicitly.

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

usb: storage: Replace custom debug tracing with dev_dbg ...

Replace custom debug tracing macros with a call to dev_dbg to simplify
code and add device info into degug output.

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

usb: storage: fix warning: no previous prototype for 'usb_stor_Bulk_clear_endpt_stall' ...

Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

usb: abolish wait_ms() function ...

This function is only used in drivers/usb/*.
It is equivalent to mdelay().

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Treewide: remove address of the Free Software Foundation ...

The FSF address has changed in the past. Instead of updating it
each time the address changes, just drop it completely treewide.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

USB storage: use dma_alloc where appropriate ...

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

USB mass storage device driver initial implementation ...

Implemented an initial version of USB mass storage device driver,
supporting USB mass storage devices with SCSI interface and BBB
protocol.  It implements the ATA interface and registers diskovered
LUNs with the disk driver.