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After Serial gadget is being unloaded, neither serial itself, nor other
gadget stuff can be loaded subsequently.
Signed-off-by: Vitaly Bordug <vitb@kernel.crashing.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Kill two unused variables in drivers/usb/misc/sisusbvga/sisusb.c.
Signed-off-by: WANG Cong <xiyou.wangcong@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Fix a longstanding race in the Ethernet gadget driver, which can cause an
oops on device disconnect. The fix is just to make the TX path check
whether its freelist is empty. That check is otherwise not necessary,
since the queue is always stopped when that list empties (and restarted
when request completion puts an entry back on that freelist).
The race window starts when the network code decides to transmit a packet,
and ends when hard_start_xmit() grabs the freelist lock. When disconnect()
is called inside that window, it shuts down the TX queue and breaks the
otherwise-solid assumption that packets are never sent through a TX queue
that's stopped.
Signed-off-by: Benedikt Spranger <bene@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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drivers/usb/misc/sisusbvga/sisusb.c: In function 'sisusb_open':
drivers/usb/misc/sisusbvga/sisusb.c:2444: warning: 'sisusb' is used uninitialized in this function
I can tell that'll oops just by looking at it.
How come this code assume a 7,000 column xterm? :(
Cc: Felipe Balbi <felipe.lima@indt.org.br>
Cc: Thomas <thomas@winischhofer.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Fixed the problem that accessed register of this controller after
having called iounmap().
Signed-off-by: Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Fixed the problem that does not work in the big endian machine.
Signed-off-by: Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Fixed the problem that does not work in the case of bRequest = 0x05 in
Class or Vendor Request.
Signed-off-by: Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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This patch makes four needlessly global functions static.
Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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This patch implements a USB serial port driver for the Winchiphead
CH341 USB-RS232 Converter. This chip also implements an IEEE 1284
parallel port, I2C and SPI, but that is not supported by the driver.
Signed-off-by: Frank A Kingswood <frank@kingswood-consulting.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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When an error occurs, existing logging uses dbg() so the cause of a
problem is hard to determine. Error conditions shouldn't only be
properly reported with debugging enabled.
A side effect of this change is that when an uninitialised device is
started, a log message similar to the following is sent:
cxacru 5-2:1.0: receive of cm 0x90 failed (-104)
This is normal - the device did not respond so firmware will be loaded.
Signed-off-by: Simon Arlott <simon@fire.lp0.eu>
Acked-by: Duncan Sands <baldrick@free.fr>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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This patch adds an additional device ID to the cp2101 USB serial
driver. This device is a Gemalto Prox-PU or CU contactless card reader
(ISO14443-A/B and Mifare). The reader is a standard Gemalto serial
proximity reader using the Gemalto Block Protocol (see reader's
documentation) bundled with a built-in CP2102 for serial/USB
conversion.
Signed-off-by: Edouard Lafargue (edouard@lafargue.name)
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Upgrade the unusual_devs.h file to support the Nikon D200
Signed-off-by: Mike Pagano <mpagano-kernel@mpagano.com>
Signed-off-by: Phil Dibowitz <phil@ipom.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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This patch (as995) cleans up the remains of the former NO_AUTOSUSPEND
quirk. Since autosuspend is disabled by default, we will let
userspace worry about which devices can safely be suspended. Thus the
lengthy series of quirk entries is no longer needed, and neither is
the quirk ID. I suppose someone might eventually run across a hub
that can't be suspended; let's ignore the possibility for now.
The patch also cleans up the hasty way in which autosuspend gets
disabled. Setting udev->autosuspend_delay to -1 wasn't quite right,
because the value is always supposed to be a multiple of HZ. It's
better to leave the delay value alone and set autosuspend_disabled,
which is what the quirk routine used to do.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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This patch (as992) fixes a recently-added bug. During a FREEZE or
PRETHAW suspend notification, non-root devices don't actually get
suspended. So we shouldn't tell their parent hubs that they did.
(This code path used to be skipped over, until the FREEZE/PRETHAW test
got moved out of usb_suspend_both() into generic_suspend().)
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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This patch (as991) updates the unusual_devs entry for the Nokia 6131
phone. As reported by Juan Ignacio Cherrutti, there's new firmware
available but it still has the same old transfer-size limit.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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This patch (jx001) fixes a variable assignment mistake in hub driver.
limited_power should be set to 0 if the hub is self-powered,and 1 if
the hub is bus-powered.
However, the effect of the code was exactly opposite to the spec's
statement for the Local Power Source field. The spec says, this field
is 1 meaning Local power supply lost while this field is 0 indicating
Local power supply good.(This statement is very confusing.)
So this patch switchs the 0 and 1.
Signed-off-by: Jason Xiao <jidong.xiao@gmail.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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the error code paths can be enter with buffers to freed buffers.
Serial core would do a kfree() on memory already freed.
Signed-off-by: Oliver Neukum <oneukum@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Currently, every driver under drivers/usb/misc/ also has to be listed in
drivers/usb/Makefile. This has been forgotten more than once, and this
patch changes drivers/usb/Makefile to simply always visit
drivers/usb/misc/ when building the USB code.
Signed-off-by: Adrian Bunk <bunk@kernel.org>
Cc: Toralf Förster <toralf.foerster@gmx.de>
Acked-by: Satyam Sharma <satyam@infradead.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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This weekend I was hacking around with a trivial USB driver for talking
to the boot load firmware of a USB Bit Whacker. It's running the
MicroChip Pic18 boot loader firmware and I'm putting together a flash
program for writing new FW to the thing.
Anyway in my use of the usb-skeleton.c as my starting point I discovered
my test program was getting hung up after attempting to write a buffer.
The application and driver where hung in a way that required me to
reboot to get it to clean up so I could try again.
It turned out the code path through skel_open can grap the driver's
io_mutex lock and forget to release it.
The following patch fixes the problem for me.
Signed-off-by: Mark Gross <mgross@linux.intel.com>
Cc: Oliver Neukum <oliver@neukum.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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This patch (as989) makes usbcore flush all outstanding URBs for each
device as the device is suspended. This will be true even when
CONFIG_USB_SUSPEND is not enabled.
In addition, an extra can_submit flag is added to the usb_device
structure. That flag will be turned off whenever a suspend request
has been received for the device, even if the device isn't actually
suspended because CONFIG_USB_SUSPEND isn't set.
It's no longer necessary to check for the device state being equal to
USB_STATE_SUSPENDED during URB submission; that check can be replaced
by a check of the can_submit flag. This also permits us to remove
some questionable references to the deprecated power.power_state field.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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This patch (as988) breaks usb_hcd_endpoint_disable() apart into two
routines. The first, usb_hcd_flush_endpoint() does the -ESHUTDOWN
unlinking of all URBs in the endpoint's queue and waits for them to
complete. The second, usb_hcd_disable_endpoint() -- renamed for
better grammatical style -- merely calls the HCD's endpoint_disable
method. The changeover is easy because the routine currently has only
one caller.
This separation of function will be exploited in the following patch:
When a device is suspended, the core will be able to cancel all
outstanding URBs for that device while leaving the HCD's
endpoint-related data structures intact for later.
As an added benefit, HCDs no longer need to check for existing URBs in
their endpoint_disable methods. It is now guaranteed that there will
be none.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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This patch (as987) changes the way FREEZE and PRETHAW suspend events
are handled in usbcore. The decision about whether or not to ignore
them for non-root devices is pushed down into the USB-device driver,
instead of being made in the core code.
This is appropriate, since devices exported to a virtualized guest or
over a network may indeed need to handle these types of suspend, even
though normal devices don't.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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This patch (as990) removes an annoying debugging message. Nobody
really cares when endpoint pseudo-devices are released.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
Cc: Thomas Dahlmann <thomas.dahlmann@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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drivers/usb/misc/sisusbvga/sisusb.c: In function sisusb_open
drivers/usb/misc/sisusbvga/sisusb.c:2444: warning: sisusb is used uninitialized in this function
is a genuine bug (which will cause oops). We cannot use "sisusb" in
error path for (!interface), because sisusb will itself be derived
from "interface" later.
Signed-off-by: Satyam Sharma <satyam@infradead.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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iuu_phoenix
the iuu_phoenix driver submits another URB from a completion handler.
This dictates a certain order of calls to usb_kill_urb() in kill_traffic().
As other drivers may do it the other way round, we need to use both
orders in kill_traffic().
This patch does so and should be merged before iuu_phoenix is merged.
Signed-off-by: Oliver Neukum <oneukum@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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The ELAN U132 Host Controller Driver uses the semaphore sw_lock as
mutex. Use the mutex API instead of the (binary) semaphore.
Signed-off-by: Matthias Kaehlcke <matthias.kaehlcke@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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This is a reworked version of this patch:
http://www.mail-archive.com/linux-usb-devel%40lists.sourceforge.net/msg55094/activate_huawei_dev.patch
That properly initializes the HUAWEI E220 devices into multi-port mode.
Signed-off-by: Johann Wilhelm <johann.wilhelm@student.tugraz.at>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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This patch (as984) fixes a rather elementary mistake in dummy_hcd.
The new statement label should come before the spin_unlock_irqrestore,
not after it.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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This patch (as981) removes the remaining nontrivial usages of
urb->status from usbcore.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Now that urb->status isn't used, urb->lock doesn't protect anything.
This patch (as980) removes it and replaces it with a private mutex in
the one remaining place it was still used: usb_kill_urb.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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This patch (as979) removes the last vestiges of urb->status from the
host controller drivers and the root-hub emulator. Now the field
doesn't get set until just before the URB's completion routine is
called.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
CC: David Brownell <david-b@pacbell.net>
CC: Olav Kongas <ok@artecdesign.ee>
CC: Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com>
CC: Tony Olech <tony.olech@elandigitalsystems.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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This patch (as978) reorganizes the way usbmon uses urb->status. It
now accepts the status value as an argument.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Acked-by: Pete Zaitcev <zaitcev@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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This patch (as977) reorganizes the way r8a66597-hcd sets urb->status. It
now keeps the information in a local variable until the last moment.
Parts of this patch were written by Yoshihiro Shimoda.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
CC: Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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This patch (as976) reorganizes the way sl811-hcd sets urb->status. It
now keeps the information in a local variable until the last moment.
The patch also improves the handling of faults during the status stage
of a control transfer, since it no longer needs to retain the error
information from the earlier stages.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
CC: David Brownell <david-b@pacbell.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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This patch (as975) reorganizes the way ohci-hcd sets urb->status. It
now keeps the information in a local variable until the last moment.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
CC: David Brownell <david-b@pacbell.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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This patch (as974) reorganizes the way ehci-hcd sets urb->status. It
now keeps the information in a local variable until the last moment.
The patch also simplifies the handling of -EREMOTEIO, since the only
use of that code is to set the do_status flag.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
CC: David Brownell <david-b@pacbell.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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This patch (as973) reorganizes the way dummy-hcd sets urb->status. It
now keeps the information in a local variable until the last moment.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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This patch adds support for the BenQ Mobile Phone EF81 to pl2303
Signed-off-by: Andreas Loibl <andreas@andreas-loibl.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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In drivers/usb/serial/oti6858.c::pl2303_buf_alloc() the return value
of kmalloc() is being cast to "struct pl2303_buf *", but that need
not be done here since kmalloc() returns "void *".
Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Some usb-serial devices (e.g. certain Edgeport models) have more than
one serial port on the same USB device/interface.
Currently the only way to distinguish these ports in userspace is by
their minor device number: the driver makes them consecutive and in
stable order.
However, for the purpose of stable naming with udev this is
insufficient: when udev handles the ADD event for one of the ports it
doesn't know what minor number the other one has.
To make stable naming easier, export the port number via sysfs.
Signed-off-by: Roman Kagan <rkagan@sw.ru>
Signed-off-by: Dmitry Guryanov <dimak@dgap.mipt.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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This fixes a small memory leak that happens every time the device is
plugged in.
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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This patch (as983) makes a test for minimum-length command sizes in
g_file_storage less restrictive. It doesn't matter because commands
with bad lengths will be detected later on anyway, and doing it like
this makes the driver interoperable with certain buggy hosts such as
the JVC HiFi (reported by Samuel Hangouet).
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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No hardware but this driver is currently totally broken so we can't make
it much worse. Remove all tbe broken invalid termios handling and replace
it with a proper set_termios method.
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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This patch (as972) changes ohci-hcd so that after an error occurs, the
remaining TDs for the URB will be skipped over entirely instead of
going through the donelist. This enables the driver to give back the
URB as soon as the error is detected, avoiding the need to store the
error status in urb->status.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
CC: David Brownell <david-b@pacbell.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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This patch (as971) fixes a small mistake: The URB's completion status
needs to be adjusted before the URB is passed to usmon_urb_complete(),
not afterward.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Handle the FT232RL device type in exactly the same way as FT232BM
devices (FT232RL detection was added around kernel 2.6.20 but not code
for handling it).
Signed-off-by: Andrew M. Bishop <amb@gedanken.demon.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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This patch (as970) adds a new urb->unlinked field, which is used to
store the status of unlinked URBs since we can't use urb->status for
that purpose any more. To help simplify the HCDs, usbcore will check
urb->unlinked before calling the completion handler; if the value is
set it will automatically override the status reported by the HCD.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
CC: David Brownell <david-b@pacbell.net>
CC: Olav Kongas <ok@artecdesign.ee>
CC: Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com>
CC: Tony Olech <tony.olech@elandigitalsystems.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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This patch (as969) continues the ongoing changes to the way HCDs
report URB statuses. The programming interface has been simplified by
making usbcore responsible for clearing urb->hcpriv and for setting
-EREMOTEIO status when an URB with the URB_SHORT_NOT_OK flag ends up
as a short transfer.
By moving the work out of the HCDs, this removes a fair amount of
repeated code.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
CC: David Brownell <david-b@pacbell.net>
CC: Olav Kongas <ok@artecdesign.ee>
CC: Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com>
CC: Tony Olech <tony.olech@elandigitalsystems.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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