linux.git/drivers/usb/storage/libusual.c, branch master

usb: remove libusual

2012-09-06T00:21:36+00:00

The "Low Performance USB Block driver" has been removed which a user of
libusual. Now we have only the usb-storage driver as the only driver in
tree. This makes libusual needless.
This patch removes libusal, fixes up all users. The usual-table is now
linked into usb-storage.
usb_usual.h remains in public include directory because some staging
users seem to need it.

Signed-off-by: Sebastian Andrzej Siewior 
Signed-off-by: Greg Kroah-Hartman

usb-storage: prepare for subdriver separation

2009-03-24T23:20:34+00:00

This patch (as1206) is the first step in converting usb-storage's
subdrivers into separate modules.  It makes the following large-scale
changes:

	Remove a bunch of unnecessary #ifdef's from usb_usual.h.
	Not truly necessary, but it does clean things up.

	Move the USB device-ID table (which is duplicated between
	libusual and usb-storage) into its own source file,
	usual-tables.c, and arrange for this to be linked with
	either libusual or usb-storage according to whether
	USB_LIBUSUAL is configured.

	Add to usual-tables.c a new usb_usual_ignore_device()
	function to detect whether a particular device needs to be
	managed by a subdriver and not by the standard handlers
	in usb-storage.

	Export a whole bunch of functions in usb-storage, renaming
	some of them because their names don't already begin with
	"usb_stor_".  These functions will be needed by the new
	subdriver modules.

	Split usb-storage's probe routine into two functions.
	The subdrivers will call the probe1 routine, then fill in
	their transport and protocol settings, and then call the
	probe2 routine.

	Take the default cases and error checking out of
	get_transport() and get_protocol(), which run during
	probe1, and instead put a check for invalid transport
	or protocol values into the probe2 function.

	Add a new probe routine to be used for standard devices,
	i.e., those that don't need a subdriver.  This new routine
	checks whether the device should be ignored (because it
	should be handled by ub or by a subdriver), and if not,
	calls the probe1 and probe2 functions.

Signed-off-by: Alan Stern 
CC: Matthew Dharm 
Signed-off-by: Greg Kroah-Hartman

USB: storage: add last-sector hacks

2009-01-07T18:00:11+00:00

This patch (as1189b) adds some hacks to usb-storage for dealing with
the growing problems involving bad capacity values and last-sector
accesses:

	A new flag, US_FL_CAPACITY_OK, is created to indicate that
	the device is known to report its capacity correctly.  An
	unusual_devs entry for Linux's own File-backed Storage Gadget
	is added with this flag set, since g_file_storage always
	reports the correct capacity and since the capacity need
	not be even (it is determined by the size of the backing
	file).

	An entry in unusual_devs.h which has only the CAPACITY_OK
	flag set shouldn't prejudice libusual, since the device will
	work perfectly well with either usb-storage or ub.  So a
	new macro, COMPLIANT_DEV, is added to let libusual know
	about these entries.

	When a last-sector access succeeds and the total number of
	sectors is odd (the unexpected case, in which guessing that
	the number is even might cause trouble), a WARN is triggered.
	The kerneloops.org project will collect these warnings,
	allowing us to add CAPACITY_OK flags for the devices in
	question before implementing the default-to-even heuristic.
	If users want to prevent the stack dump produced by the WARN,
	they can disable the hack by adding an unusual_devs entry
	for their device with the CAPACITY_OK flag.

	When a last-sector access fails three times in a row and
	neither the FIX_CAPACITY nor the CAPACITY_OK flag is set,
	we assume the last-sector bug is present.  We replace the
	existing status and sense data with values that will cause
	the SCSI core to fail the access immediately rather than
	retry indefinitely.  This should fix the difficulties
	people have been having with Nokia phones.

Signed-off-by: Alan Stern 
Cc: stable 
Signed-off-by: Greg Kroah-Hartman

usb: libusual kthread_run() called with wrong format.

2008-05-02T17:25:51+00:00

Signed-off-by: Rusty Russell 
Signed-off-by: Greg Kroah-Hartman

USB: libusual: locking cleanup

2008-04-25T04:16:33+00:00

I converted the usu_init_notify semaphore to normal mutex usage, and it
should still prevent the request_module before the init routine is
complete.  Before it acted more like a complete, now the mutex protects two
distinct section from running at the same time.

Signed-off-by: Daniel Walker 
Cc: Pete Zaitcev 
Signed-off-by: Andrew Morton 
Signed-off-by: Greg Kroah-Hartman

kill DECLARE_MUTEX_LOCKED

2007-10-17T15:42:47+00:00

DECLARE_MUTEX_LOCKED was used for semaphores used as completions and we've
got rid of them.  Well, except for one in libusual that the maintainer
explicitly wants to keep as semaphore.  So convert that useage to an
explicit sema_init and kill of DECLARE_MUTEX_LOCKED so that new code is
reminded to use a completion.

Signed-off-by: Christoph Hellwig 
Acked-by: "Satyam Sharma" 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

libusual: change block scope variable to function scope

2007-04-27T20:28:34+00:00

Someone changed the code to kthread and used his style instead of mine.

The problem with the block variables is that they provoke shadowing,
which is actually exactly what has happened in my other tree which
has the class patch.

Signed-off-by: Pete Zaitcev 
Signed-off-by: Greg Kroah-Hartman

USB: replace kernel_thread() with kthread_run() in libusual.c

2006-09-27T18:58:56+00:00

Replaced kernel_thread() with kthread_run() since kernel_thread() is
deprecated in drivers/modules.

Signed-off-by: Cedric Le Goater 
Cc: Alan Stern 
Signed-off-by: Matthew Dharm 
Signed-off-by: Greg Kroah-Hartman

[PATCH] USB: libusual: fix warning on 64bit boxes

2006-02-01T01:23:43+00:00

We cast an int to a void * which not unreasonably makes gcc suspicious.
We don't actually care what type "type" is so use unsigned long so it
matches pointer length on all platforms.

Signed-off-by: Alan Cox 
Acked-by: Pete Zaitcev 
Signed-off-by: Andrew Morton 
Signed-off-by: Greg Kroah-Hartman

[PATCH] USB: remove .owner field from struct usb_driver

2006-01-04T21:48:34+00:00

It is no longer needed, so let's remove it, saving a bit of memory.

Signed-off-by: Greg Kroah-Hartman