linux-stable.git/drivers/usb/class, branch v3.4.4

usb: cdc-acm: fix devices not unthrottled on open

2012-06-22T18:37:14+00:00

commit 6c4707f3f8c44ec18282e1c014c80e1c257042f9 upstream.

Currently CDC-ACM devices stay throttled when their TTY is closed while
throttled, stalling further communication attempts after the next open.

Unthrottling during open/activate got lost starting with kernel
3.0.0 and this patch reintroduces it.

Signed-off-by: Otto Meta 
Acked-by: Johan Hovold 
Signed-off-by: Greg Kroah-Hartman

USB: cdc-wdm: Add Vodafone/Huawei K5005 support

2012-06-22T18:37:14+00:00

commit de102ef41f24a4c251c4a3838796bb27557d4d93 upstream.

Tested-by: Thomas Schäfer 
Signed-off-by: Bjørn Mork 
Signed-off-by: Greg Kroah-Hartman

USB: cdc-wdm: remove from device list on disconnect

2012-06-01T07:18:19+00:00

commit 6286d85e8efdb59252d1ceb99a56fa6b0b11526c upstream.

Prevents dereferencing an invalid struct usb_interface
pointer.

Always delete entry from device list whether or not the
rest of the device state cleanup is postponed. The device
list uses desc->intf as key, and wdm_open will dereference
this key while searching for a matching device.  A device
should not appear in the list unless probe() has succeeded
and disconnect() has not finished.

Cc: Oliver Neukum 
Signed-off-by: Bjørn Mork 
Signed-off-by: Greg Kroah-Hartman

USB: cdc-wdm: cannot use dev_printk when device is gone

2012-06-01T07:18:19+00:00

commit 6b0b79d38806481c1c8fffa7c5842f3c83679a42 upstream.

We cannot dereference a removed USB interface for
dev_printk. Use pr_debug instead where necessary.

Flush errors are expected if device is unplugged and are
therefore best ingored at this point.

Move the kill_urbs() call in wdm_release with dev_dbg()
for the non disconnect, as we know it has already been
called if WDM_DISCONNECTING is set.  This does not
actually fix anything, but keeps the code more consistent.

Cc: Oliver Neukum 
Signed-off-by: Bjørn Mork 
Signed-off-by: Greg Kroah-Hartman

USB: cdc-wdm: poll must return POLLHUP if device is gone

2012-06-01T07:18:19+00:00

commit 616b6937e348ef2b4c6ea5fef2cd3c441145efb0 upstream.

Else the poll will be restarted indefinitely in a tight loop,
preventing final device cleanup.

Cc: Oliver Neukum 
Signed-off-by: Bjørn Mork 
Signed-off-by: Greg Kroah-Hartman

USB: cdc-wdm: fix memory leak

2012-06-01T07:18:18+00:00

commit 2f338c8a1904e2e7aa5a8bd12fb0cf2422d17da4 upstream.

cleanup() is not called if the last close() comes after
disconnect(). That leads to a memory leak. Rectified
by checking for an earlier disconnect() in release()

Signed-off-by: Oliver Neukum 
Signed-off-by: Greg Kroah-Hartman

USB: cdc-wdm: sanitize error returns

2012-06-01T07:18:18+00:00

commit 24a85bae5da2b43fed423859c09c5a81ab359473 upstream.

wdm_flush() returns unsanitized USB error codes.
They must be cleaned up to before being anded to user space

Signed-off-by: Oliver Neukum 
Signed-off-by: Greg Kroah-Hartman

USB: cdc-wdm: fix race leading leading to memory corruption

2012-04-26T23:59:44+00:00

This patch fixes a race whereby a pointer to a buffer
would be overwritten while the buffer was in use leading
to a double free and a memory leak. This causes crashes.
This bug was introduced in 2.6.34

Signed-off-by: Oliver Neukum 
Tested-by: Bjørn Mork 
Cc: stable 
Signed-off-by: Greg Kroah-Hartman

Merge tag 'usb-3.3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb

2012-03-20T18:26:30+00:00

Pull USB merge for 3.4-rc1 from Greg KH:
 "Here's the big USB merge for the 3.4-rc1 merge window.

  Lots of gadget driver reworks here, driver updates, xhci changes, some
  new drivers added, usb-serial core reworking to fix some bugs, and
  other various minor things.

  There are some patches touching arch code, but they have all been
  acked by the various arch maintainers."

* tag 'usb-3.3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (302 commits)
  net: qmi_wwan: add support for ZTE MF820D
  USB: option: add ZTE MF820D
  usb: gadget: f_fs: Remove lock is held before freeing checks
  USB: option: make interface blacklist work again
  usb/ub: deprecate & schedule for removal the "Low Performance USB Block" driver
  USB: ohci-pxa27x: add clk_prepare/clk_unprepare calls
  USB: use generic platform driver on ath79
  USB: EHCI: Add a generic platform device driver
  USB: OHCI: Add a generic platform device driver
  USB: ftdi_sio: new PID: LUMEL PD12
  USB: ftdi_sio: add support for FT-X series devices
  USB: serial: mos7840: Fixed MCS7820 device attach problem
  usb: Don't make USB_ARCH_HAS_{XHCI,OHCI,EHCI} depend on USB_SUPPORT.
  usb gadget: fix a section mismatch when compiling g_ffs with CONFIG_USB_FUNCTIONFS_ETH
  USB: ohci-nxp: Remove i2c_write(), use smbus
  USB: ohci-nxp: Support for LPC32xx
  USB: ohci-nxp: Rename symbols from pnx4008 to nxp
  USB: OHCI-HCD: Rename ohci-pnx4008 to ohci-nxp
  usb: gadget: Kconfig: fix typo for 'different'
  usb: dwc3: pci: fix another failure path in dwc3_pci_probe()
  ...

usb: cdc-wdm: adding usb_cdc_wdm_register subdriver support

2012-03-08T21:06:48+00:00

This driver can be used as a subdriver of another USB driver, allowing
it to export a Device Managment interface consisting of a single interrupt
endpoint with no dedicated USB interface.

Some devices provide a Device Management function combined with a wwan
function in a single USB interface having three endpoints (bulk in/out
+ interrupt).  If the interrupt endpoint is used exclusively for DM
notifications, then this driver can support that as a subdriver
provided that the wwan driver calls the appropriate entry points on
probe, suspend, resume, pre_reset, post_reset and disconnect.

The main driver must have full control over all interface related
settings, including the needs_remote_wakeup flag. A manage_power
function must be provided by the main driver.

A manage_power stub doing direct flag manipulation is used in normal
driver mode.

Signed-off-by: Bjørn Mork 
Acked-by: Oliver Neukum 
Signed-off-by: Greg Kroah-Hartman