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Alan Stern [Wed, 27 Mar 2013 20:14:19 +0000 (16:14 -0400)]
USB: use "global suspend" for system sleep on USB-2 buses
This patch (as1674) speeds up system sleep transitions by not
suspending each individual device on a USB-1.1 or USB-2 bus. The
devices will automatically go into suspend when their root hubs are
suspended (i.e., stop sending out Start-Of-Frame packets) -- this is
what the USB spec calls "global suspend".
Since this is what we do already when CONFIG_USB_SUSPEND isn't
enabled, it shouldn't cause any problems.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
CC: Peter Chen <peter.chen@freescale.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Alan Stern [Wed, 27 Mar 2013 20:14:01 +0000 (16:14 -0400)]
USB: avoid error messages when a device is disconnected
This patch (as1673) reduces the amount of log spew from the hub driver
by removing a bunch of error messages in the case where the device in
question is already known to have been disconnected. Since the
disconnect event itself appears in the log, there's no need for other
error messages.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Tested-by: Jenya Y <jy.gerstmaier@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Greg Kroah-Hartman [Thu, 28 Mar 2013 18:02:24 +0000 (11:02 -0700)]
Revert "USB: serial: fix hang when opening port"
This reverts commit
eba0e3c3a0ba7b96f01cbe997680f6a4401a0bfc.
When merged together (usb-linus and usb-next), this fix isn't needed and
causes a build error. Revert the commit to solve the build issue.
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Ming Lei <tom.leiming@gmail.com>
Cc: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Greg Kroah-Hartman [Thu, 28 Mar 2013 18:00:55 +0000 (11:00 -0700)]
Merge branch 'usb-linus' into usb-next
This lets us fix the build error that happens when these two trees are merged
together.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Konstantin Holoborodko [Thu, 28 Mar 2013 15:06:13 +0000 (00:06 +0900)]
usb: ftdi_sio: Add support for Mitsubishi FX-USB-AW/-BD
It enhances the driver for FTDI-based USB serial adapters
to recognize Mitsubishi Electric Corp. USB/RS422 Converters
as FT232BM chips and support them.
https://search.meau.com/?q=FX-USB-AW
Signed-off-by: Konstantin Holoborodko <klh.kernel@gmail.com>
Tested-by: Konstantin Holoborodko <klh.kernel@gmail.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Roland Stigge [Tue, 26 Mar 2013 17:36:01 +0000 (18:36 +0100)]
usb: Fix compile error by selecting USB_OTG_UTILS
The current lpc32xx_defconfig breaks like this, caused by recent phy
restructuring:
LD init/built-in.o
drivers/built-in.o: In function `usb_hcd_nxp_probe':
drivers/usb/host/ohci-nxp.c:224: undefined reference to `isp1301_get_client'
drivers/built-in.o: In function `lpc32xx_udc_probe':
drivers/usb/gadget/lpc32xx_udc.c:3104: undefined reference to
`isp1301_get_client' distcc[27867] ERROR: compile (null) on localhost failed
make: *** [vmlinux] Error 1
Caused by
1c2088812f095df77f4b3224b65db79d7111a300 (usb: Makefile: fix
drivers/usb/phy/ Makefile entry)
This patch fixes this by selecting USB_OTG_UTILS in Kconfig which
causes the phy driver to be built again.
Signed-off-by: Roland Stigge <stigge@antcom.de>
Acked-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Greg Kroah-Hartman [Tue, 26 Mar 2013 21:14:54 +0000 (14:14 -0700)]
Merge tag 'for-usb-linus-2013-03-26' of git://git./linux/kernel/git/sarah/xhci into usb-linus
Misc xHCI fixes for 3.9
Hi Greg,
Here's a couple of fixes for the xHCI driver. Three patches are nothing
major: build warning fix, macro field width fix, and removing some
unnecessary log spam.
The only interesting thing here is Tianyu's two patches to fix the USB
port connection type discovery, for the USB port power off mechanism.
This adds new USB host API, but as discussed, it's necessary to avoid
powering off the wrong USB port. It's not marked for backport to stable
kernels, since the sysfs mechanism to manually power off a port didn't
go in until 3.9.
I've smoke tested these, including system suspend, USB device suspend,
and rocking out in my cube with a pair of USB headphones. They look
fine to me.
Hibernate is currently broken on my system, due to some nouveau MMIO
read faults. I'll report that separately.
Sarah Sharp
Ming Lei [Tue, 26 Mar 2013 02:49:55 +0000 (10:49 +0800)]
USB: serial: fix hang when opening port
Johan's 'fix use-after-free in TIOCMIWAIT' patchset[1] introduces
one bug which can cause kernel hang when opening port.
This patch initialized the 'port->delta_msr_wait' waitqueue head
to fix the bug which is introduced in 3.9-rc4.
[1], http://marc.info/?l=linux-usb&m=
136368139627876&w=2
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Ming Lei <tom.leiming@gmail.com>
Acked-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Soeren Moch [Fri, 22 Mar 2013 16:16:52 +0000 (12:16 -0400)]
USB: EHCI: fix bug in iTD/siTD DMA pool allocation
[Description written by Alan Stern]
Soeren tracked down a very difficult bug in ehci-hcd's DMA pool
management of iTD and siTD structures. Some background: ehci-hcd
gives each isochronous endpoint its own set of active and free itd's
(or sitd's for full-speed devices). When a new itd is needed, it is
taken from the head of the free list, if possible. However, itd's
must not be used twice in a single frame because the hardware
continues to access the data structure for the entire duration of a
frame. Therefore if the itd at the head of the free list has its
"frame" member equal to the current value of ehci->now_frame, it
cannot be reused and instead a new itd is allocated from the DMA pool.
The entries on the free list are not released back to the pool until
the endpoint is no longer in use.
The bug arises from the fact that sometimes an itd can be moved back
onto the free list before itd->frame has been set properly. In
Soeren's case, this happened because ehci-hcd can allocate one more
itd than it actually needs for an URB; the extra itd may or may not be
required depending on how the transfer aligns with a frame boundary.
For example, an URB with 8 isochronous packets will cause two itd's to
be allocated. If the URB is scheduled to start in microframe 3 of
frame N then it will require both itds: one for microframes 3 - 7 of
frame N and one for microframes 0 - 2 of frame N+1. But if the URB
had been scheduled to start in microframe 0 then it would require only
the first itd, which could cover microframes 0 - 7 of frame N. The
second itd would be returned to the end of the free list.
The itd allocation routine initializes the entire structure to 0, so
the extra itd ends up on the free list with itd->frame set to 0
instead of a meaningful value. After a while the itd reaches the head
of the list, and occasionally this happens when ehci->now_frame is
equal to 0. Then, even though it would be okay to reuse this itd, the
driver thinks it must get another itd from the DMA pool.
For as long as the isochronous endpoint remains in use, this flaw in
the mechanism causes more and more itd's to be taken slowly from the
DMA pool. Since none are released back, the pool eventually becomes
exhausted.
This reuslts in memory allocation failures, which typically show up
during a long-running audio stream. Video might suffer the same
effect.
The fix is very simple. To prevent allocations from the pool when
they aren't needed, make sure that itd's sent back to the free list
prematurely have itd->frame set to an invalid value which can never be
equal to ehci->now_frame.
This should be applied to -stable kernels going back to 3.6.
Signed-off-by: Soeren Moch <smoch@web.de>
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Thu, 21 Mar 2013 11:37:51 +0000 (12:37 +0100)]
USB: serial: update copyright information
Update copyright information.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Thu, 21 Mar 2013 11:37:50 +0000 (12:37 +0100)]
USB: iuu_phoenix: remove bogus disconnect test in close
Remove bogus disconnect test for serial device being NULL in close. This
can never happen as close is guaranteed to be called before the last tty
reference is dropped (and port->serial is cleared).
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Thu, 21 Mar 2013 11:37:49 +0000 (12:37 +0100)]
USB: garmin_gps: remove bogus disconnect test in bulk callback
Remove bogus disconnect test for serial device being NULL in read bulk
callback. This can never happen as the port read urb is killed (and
poisoned) at close, which in turn is guaranteed to be called before the
last tty reference is dropped (and port->serial is cleared).
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Thu, 21 Mar 2013 11:37:48 +0000 (12:37 +0100)]
USB: garmin_gps: remove bogus disconnect test in close
Remove bogus disconnect test for serial device being NULL in close. This
can never happen as close is guaranteed to be called before the last tty
reference is dropped (and port->serial is cleared).
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Thu, 21 Mar 2013 11:37:47 +0000 (12:37 +0100)]
USB: visor: always disable uart on close
Always try to disable the uart on close.
Since the switch to tty ports, close will be called as part of shutdown
before disconnect returns. Hence there is no need to check the
disconnected flag, and we can put devices in disabled states also on
driver unbind.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Thu, 21 Mar 2013 11:37:46 +0000 (12:37 +0100)]
USB: quatech2: always disable uart on close
Always try to disable the uart on close.
Since the switch to tty ports, close will be called as part of shutdown
before disconnect returns. Hence there is no need to check the
disconnected flag, and we can put devices in disabled states also on
driver unbind.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Thu, 21 Mar 2013 11:37:45 +0000 (12:37 +0100)]
USB: pl2303: remove disconnect test from tiocmset
Remove unnecessary disconnect test in tiocmset. No ioctls will be made
after disconnect returns.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Thu, 21 Mar 2013 11:37:44 +0000 (12:37 +0100)]
USB: pl2303: fix return value of tiocmset
Make sure we return 0 or a negative error number appropriate for
userspace on errors.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Thu, 21 Mar 2013 11:37:43 +0000 (12:37 +0100)]
USB: opticon: remove disconnect test from tiocmset
Remove unnecessary disconnect test in tiocmset. No ioctls will be made
after disconnect returns.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Thu, 21 Mar 2013 11:37:42 +0000 (12:37 +0100)]
USB: opticon: fix return value of tiocmset
Make sure we return 0 or a negative error number appropriate for
userspace on errors.
Currently 1 rather than 0 is returned on successful operation.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Thu, 21 Mar 2013 11:37:41 +0000 (12:37 +0100)]
USB: mos7720: always disable uart on close
Always try to disable the uart on close.
Since the switch to tty ports, close will be called as part of shutdown
before disconnect returns. Hence there is no need to check the
disconnected flag, and we can put devices in disabled states also on
driver unbind.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Thu, 21 Mar 2013 11:37:40 +0000 (12:37 +0100)]
USB: metro-usb: always disable uart on close
Always try to disable the uart on close.
Since the switch to tty ports, close will be called as part of shutdown
before disconnect returns. Hence there is no need to check the
disconnected flag, and we can put devices in disabled states also on
driver unbind.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Thu, 21 Mar 2013 11:37:39 +0000 (12:37 +0100)]
USB: kl5kusb105: always disable uart on close
Always try to disable the uart on close.
Since the switch to tty ports, close will be called as part of shutdown
before disconnect returns. Hence there is no need to check the
disconnected flag, and we can put devices in disabled states also on
driver unbind.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Thu, 21 Mar 2013 11:37:38 +0000 (12:37 +0100)]
USB: io_ti: always disable uart on close
Always try to disable the uart on close.
Since the switch to tty ports, close will be called as part of shutdown
before disconnect returns. Hence there is no need to check the
disconnected flag, and we can put devices in disabled states also on
driver unbind.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Thu, 21 Mar 2013 11:37:37 +0000 (12:37 +0100)]
USB: cypress_m8: remove bogus disconnect test from close
Remove disconnected test from close which did not protect any device IO
at all.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Thu, 21 Mar 2013 11:37:36 +0000 (12:37 +0100)]
USB: cp210x: always disable uart on close
Always try to disable the uart on close.
Since the switch to tty ports, close will be called as part of shutdown
before disconnect returns. Hence there is no need to check the
disconnected flag, and we can put devices in disabled states also on
driver unbind.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Thu, 21 Mar 2013 11:37:35 +0000 (12:37 +0100)]
USB: serial: remove unused MSR-wait queue
Remove the port MSR-wait queue now that all drivers have been migrated
to the tty-port queue.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Thu, 21 Mar 2013 11:37:34 +0000 (12:37 +0100)]
USB: ti_usb_3410_5052: switch to generic TIOCMIWAIT implementation
Switch to the generic TIOCMIWAIT implementation which does not suffer
from the races involved when using the deprecated sleep_on functions.
This also fixes the issue with processes waiting for
modem-status-changes not being woken up at disconnect.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Thu, 21 Mar 2013 11:37:33 +0000 (12:37 +0100)]
USB: ti_usb_3410_5052: switch to generic get_icount implementation
Switch to the generic get_icount implementation.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Thu, 21 Mar 2013 11:37:32 +0000 (12:37 +0100)]
USB: ssu100: switch to generic TIOCMIWAIT implementation
Switch to the generic TIOCMIWAIT implementation.
This also fixes the issue with processes waiting for
modem-status-changes not being woken up at disconnect.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Thu, 21 Mar 2013 11:37:31 +0000 (12:37 +0100)]
USB: ssu100: switch to generic get_icount implementation
Switch to the generic get_icount implementation.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Thu, 21 Mar 2013 11:37:30 +0000 (12:37 +0100)]
USB: spcp8x5: add proper modem-status support
Fetch modem status on carrier_raised and tiocmget.
This driver appeared to support modem-status but only read the modem
status registers once at open and then used that cached value for all
further enquires.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Thu, 21 Mar 2013 11:37:29 +0000 (12:37 +0100)]
USB: spcp8x5: reimplement device type detection
Reimplement device type detection using the device id table and quirks.
Device type was used to detect one device type which did not support to
control functions. Add quirks to the device table and store them in the
private port data at probe instead.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Thu, 21 Mar 2013 11:37:28 +0000 (12:37 +0100)]
USB: spcp8x5: clean up modem status retrieval
Clean up modem status retrieval.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Thu, 21 Mar 2013 11:37:27 +0000 (12:37 +0100)]
USB: spcp8x5: pass usb-serial port to control functions
Pass usb-serial port to the control functions for uart status and work
mode.
Use port device for debugging and use dev_err to report errors.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Thu, 21 Mar 2013 11:37:26 +0000 (12:37 +0100)]
USB: spcp8x5: clean up code
Clean up this driver somewhat.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Thu, 21 Mar 2013 11:37:25 +0000 (12:37 +0100)]
USB: spcp8x5: remove broken uart-error handling
Remove broken uart-error handling.
This driver appears to implement uart-error handling but does not
receive status interrupts or status information with bulk in transfers.
Instead status was retrieved at open and used to flag only the first
bulk in transfer.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Thu, 21 Mar 2013 11:37:24 +0000 (12:37 +0100)]
USB: spcp8x5: remove broken TIOCMIWAIT support
Remove broken TIOCMIWAIT support.
This drivers appears to implement TIOCMIWAIT but has no means of
receiving modem-status interrupts.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Thu, 21 Mar 2013 11:37:23 +0000 (12:37 +0100)]
USB: quatech2: switch to generic TIOCMIWAIT implementation
Switch to the generic TIOCMIWAIT implementation.
This also fixes the issue with processes waiting for
modem-status-changes not being woken up at disconnect.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Thu, 21 Mar 2013 11:37:22 +0000 (12:37 +0100)]
USB: quatech2: switch to generic get_icount implementation
Switch to the generic get_icount implementation.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Thu, 21 Mar 2013 11:37:21 +0000 (12:37 +0100)]
USB: pl2303: fix TIOCMIWAIT and disconnect
Use tty-port modem-status-change wait queue on which processes are woken
up at hangup and disconnect.
Currently a process waiting on modem-status changes will not be woken on
device disconnect.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Thu, 21 Mar 2013 11:37:20 +0000 (12:37 +0100)]
USB: pl2303: add custom tiocmiwait operation
Break out TIOCMIWAIT handling from custom ioctl operation and use
tiocmiwait operation field instead.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Thu, 21 Mar 2013 11:37:19 +0000 (12:37 +0100)]
USB: oti6858: fix TIOCMIWAIT and disconnect
Use tty-port modem-status-change wait queue on which processes are woken
up at hangup and disconnect.
Currently a process waiting on modem-status changes will not be woken on
device disconnect.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Thu, 21 Mar 2013 11:37:18 +0000 (12:37 +0100)]
USB: oti6858: replace custom ioctl operation with tiocmiwait
Replace custom ioctl operation with tiocmiwait.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Thu, 21 Mar 2013 11:37:17 +0000 (12:37 +0100)]
USB: mos7840: switch to generic TIOCMIWAIT implementation
Switch to the generic TIOCMIWAIT implementation.
This also fixes the issue with processes waiting for
modem-status-changes not being woken up at disconnect.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Thu, 21 Mar 2013 11:37:16 +0000 (12:37 +0100)]
USB: mos7840: switch to generic get_icount implementation
Switch to the generic get_icount implementation.
Note that the interrupt counters will no longer be reset at open which
is in accordance with which how the other drivers work.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Thu, 21 Mar 2013 11:37:15 +0000 (12:37 +0100)]
USB: mos7840: remove smp barriers from icount handling
Remove SMP memory barriers from icount handling and rely on the barriers
implied by wait_event, sleep and locks, while using the port lock to
guarantee atomicity.
This is a step in moving over to the generic icount implementations.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Thu, 21 Mar 2013 11:37:14 +0000 (12:37 +0100)]
USB: mos7720: remove broken get_icount and TIOCMIWAIT
Remove broken get_icount and TIOCMIWAIT support.
The driver has an icount structure but it is never been updated which
makes get_icount rather pointless and causes TIOCMIWAIT to always return
-EIO.
Note that the TIOCMIWAIT implementation has always been broken and would
not work even if icount support was added as it does not wait for the
modem status to change (does not use a work queue at all).
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Thu, 21 Mar 2013 11:37:13 +0000 (12:37 +0100)]
USB: mct_u232: switch to generic TIOCMIWAIT implementation
Switch to the generic TIOCMIWAIT implementation.
This also fixes the issue with processes waiting for
modem-status-changes not being woken up at disconnect.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Thu, 21 Mar 2013 11:37:12 +0000 (12:37 +0100)]
USB: mct_u232: switch to generic get_icount implementation
Switch to the generic get_icount implementation.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Thu, 21 Mar 2013 11:37:11 +0000 (12:37 +0100)]
USB: iuu_phoenix: remove unused MSR-wait queue
Remove unused, private modem-status wait queue from driver. If
TIOCMIWAIT is ever implemented it must not rely on a private wait queue
which may have been released when woken up.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Thu, 21 Mar 2013 11:37:10 +0000 (12:37 +0100)]
USB: io_ti: switch to generic TIOCMIWAIT implementation
Switch to the generic TIOCMIWAIT implementation which does not suffer
from the races involved when using the deprecated sleep_on functions.
This also fixes the issue with processes waiting for
modem-status-changes not being woken up at disconnect.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Thu, 21 Mar 2013 11:37:09 +0000 (12:37 +0100)]
USB: io_ti: switch to generic get_icount implementation
Switch to the generic get_icount implementation.
Note that the interrupt counters will no longer be reset at open which
is in accordance with which how the other drivers work.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Thu, 21 Mar 2013 11:37:08 +0000 (12:37 +0100)]
USB: io_edgeport: switch to generic TIOCMIWAIT implementation
Switch to the generic TIOCMIWAIT implementation.
This also fixes the issue with processes waiting for
modem-status-changes not being woken up at disconnect.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Thu, 21 Mar 2013 11:37:07 +0000 (12:37 +0100)]
USB: io_edgeport: switch to generic get_icount implementation
Switch to the generic get_icount implementation.
Note that the interrupt counters will no longer be reset at open which
is in accordance with which how the other drivers work.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Thu, 21 Mar 2013 11:37:06 +0000 (12:37 +0100)]
USB: f81232: fix TIOCMIWAIT and disconnect
Use tty-port modem-status-change wait queue on which processes are woken
up at hangup and disconnect.
Currently a process waiting on modem-status changes will not be woken on
device disconnect.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Thu, 21 Mar 2013 11:37:05 +0000 (12:37 +0100)]
USB: f81232: add custom tiocmiwait operation
Break out TIOCMIWAIT handling from custom ioctl operation and use
tiocmiwait operation field instead.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Thu, 21 Mar 2013 11:37:04 +0000 (12:37 +0100)]
USB: digi_acceleport: remove unused MSR-wait queue
Remove unused, private modem-status wait queue from driver. If
TIOCMIWAIT is ever implemented it must not rely on a private wait queue
which may have been released when woken up.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Thu, 21 Mar 2013 11:37:03 +0000 (12:37 +0100)]
USB: cypress_m8: fix TIOCMIWAIT and disconnect
Use tty-port modem-status-change wait queue on which processes are woken
up at hangup and disconnect.
Currently a process waiting on modem-status changes will not be woken on
device disconnect.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Thu, 21 Mar 2013 11:37:02 +0000 (12:37 +0100)]
USB: cypress_m8: replace custom ioctl operation with tiocmiwait
Replace custom ioctl operation with tiocmiwait.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Thu, 21 Mar 2013 11:37:01 +0000 (12:37 +0100)]
USB: ch341: fix TIOCMIWAIT and disconnect
Use tty-port modem-status-change wait queue on which processes are woken
up at hangup and disconnect.
Currently a process waiting on modem-status changes will not be woken on
device disconnect as wake up was only done in dtr_rts which isn't
guaranteed to be called (e.g. if HUPCL is not set).
Also remove the redundant wake-up call from dtr_rts.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Thu, 21 Mar 2013 11:37:00 +0000 (12:37 +0100)]
USB: ch341: replace custom ioctl operation with tiocmiwait
Replace custom ioctl operation with tiocmiwait.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Thu, 21 Mar 2013 11:36:59 +0000 (12:36 +0100)]
USB: ark3116: switch to generic TIOCMIWAIT implementation
Switch to the generic TIOCMIWAIT implementation which does not suffer
from the races involved when using the deprecated sleep_on functions.
This also fixes the issue with processes waiting for
modem-status-changes not being woken up at disconnect.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Thu, 21 Mar 2013 11:36:58 +0000 (12:36 +0100)]
USB: ark3116: switch to generic get_icount implementation
Switch to the generic get_icount implementation.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Thu, 21 Mar 2013 11:36:57 +0000 (12:36 +0100)]
USB: ftdi_sio: switch to generic get_icount implementation
Switch to the generic get_icount implementation.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Thu, 21 Mar 2013 11:36:56 +0000 (12:36 +0100)]
USB: ftdi_sio: switch to generic TIOCMIWAIT implementation
Switch to the generic TIOCMIWAIT implementation which does not suffer
from the races involved when using the deprecated sleep_on functions.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Thu, 21 Mar 2013 11:36:55 +0000 (12:36 +0100)]
USB: ftdi_sio: use port icount
Use the port-data icount for interrupt counters.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Thu, 21 Mar 2013 11:36:54 +0000 (12:36 +0100)]
USB: serial: add generic get_icount implementation
Add generic get_icount implementation that subdrivers relying on the
port interrupt counters can use.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Thu, 21 Mar 2013 11:36:53 +0000 (12:36 +0100)]
USB: serial: wake up MSR-wait queue on disconnect
Make sure processes waiting for modem-status changes are woken up at
disconnect.
This is needed for custom subdriver TIOCMIWAIT-implementations which do
not yet handle hangup.
Even though processes on the tty-port wait queue are woken up at hangup
the wake-up call in usb-serial disconnect is still needed if a woken-up
process may go back to sleep (e.g. due to an incomplete
TIOCMIWAIT-implementation). If a disconnect occurs after a hangup, any
process waiting for changes will not be woken up a second time by the
tty-layer as the port will then have been disassociated from the tty.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Thu, 21 Mar 2013 11:36:52 +0000 (12:36 +0100)]
USB: serial: add generic TIOCMIWAIT implementation
Add generic TIOCMIWAIT implementation which correctly handles hangup,
USB-device disconnect, does not rely on the deprecated sleep_on
functions and hence does not suffer from the races currently affecting
several usb-serial drivers.
This makes it much easier to add TIOCMIWAIT support to subdrivers as the
tricky details related to hangup and disconnect (e.g. atomicity, that
the private port data may have been freed when woken up, and waking up
processes at disconnect) have been handled once and for all.
To add support to a subdriver, simply set the tiocmiwait-port-operation
field, update the port icount fields and wake up any process sleeping on
the tty-port modem-status-change wait queue on changes.
Note that the tty-port initialised flag can be used to detect
disconnected as the port will be hung up as part of disconnect (and
cannot be reactivated due to the disconnected flag). However, as the
tty-port implementation currently wakes up processes before calling port
shutdown, the tty-hupping flag must also be checked to detect hangup for
now.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Thu, 21 Mar 2013 11:36:51 +0000 (12:36 +0100)]
USB: serial: add tiocmiwait subdriver operation
Add tiocmiwait operation to struct usb_serial_driver.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Thu, 21 Mar 2013 11:36:50 +0000 (12:36 +0100)]
USB: serial: clean up usb-serial bus device removal
Make sure to unregister the tty-device before calling subdriver
port_remove.
This way remove will reverse probe, and specifically any port data
released in port_remove will be available throughout tty unregister.
Note that the order currently does not matter as the tty-layer can make
callbacks also after the device has been unregistered. This is
handled in usb-serial core using the disconnected flag, which is
already set when usb-serial bus device remove is called.
Cc: Peter Hurley <peter@hurleysoftware.com>
Reported-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Thu, 21 Mar 2013 11:36:49 +0000 (12:36 +0100)]
USB: serial: use urb poison to reliably kill traffic
Use usb_poison_urb to reliably kill all urbs on disconnect and suspend.
This way there will be no question that the urbs cannot be resubmitted
by buggy subdrivers.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Thu, 21 Mar 2013 11:36:48 +0000 (12:36 +0100)]
USB: fix urb-poison imbalance
The calls to usb_poison_urb and usb_unpoison_urb are expected to be
balanced. However, if an urb that has not yet been submitted is
poisoned, its reject counter will not be increased as its ep-field is
NULL. A consecutive call to unpoison will thus in fact poison the urb
as its reject counter will be decremented to a negative value,
effectively preventing the urb from being submitted.
Note that there are currently no in-kernel drivers affected by this.
Cc: Alan Stern <stern@rowland.harvard.edu>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Thu, 21 Mar 2013 11:36:47 +0000 (12:36 +0100)]
USB: serial: rename port release
Rename port_release so that all usb_serial_port functions have a common
prefix.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Thu, 21 Mar 2013 11:36:46 +0000 (12:36 +0100)]
USB: serial: fix port release
We should not call kill_traffic (and usb_kill_urb) once disconnect
returns. Any pending urbs are killed at disconnect and new submissions
are prevented by usb_unbind_interface (and usb_disable_interface).
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Thu, 21 Mar 2013 11:36:45 +0000 (12:36 +0100)]
USB: cyberjack: fix disconnect handling
Make sure the interrupt urb submitted in port_probe is killed in
port_remove.
The interrupt-urb completion handler references the port and may get
called after port_remove has returned and the port has been
unregistered (although this is currently prevented by usb-serial core as
we are using a non-private urb).
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Thu, 21 Mar 2013 11:36:44 +0000 (12:36 +0100)]
USB: serial: clean up generic-operation handling
Most USB serial drivers are, and should be, using as much of the generic
implementation as possible.
Rename the fixup_generic function to a more descriptive name.
Reword the related debug message in a more neutral tone (and remember to
add the missing newline).
Finally, move the operations initialisation to after the initial sanity
checks.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Thu, 21 Mar 2013 11:36:43 +0000 (12:36 +0100)]
USB: serial: remove generic release callback
Remove empty generic release implementation and make the release
callback non-mandatory (like attach, probe and disconnect).
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Thu, 21 Mar 2013 11:36:42 +0000 (12:36 +0100)]
USB: serial: remove generic disconnect callback
Remove the now empty generic disconnect callback and make the disconnect
callback non-mandatory.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Thu, 21 Mar 2013 11:36:41 +0000 (12:36 +0100)]
USB: serial: fix generic disconnect implementation
There is no need for the generic disconnect callback to stop the read
and write urbs a second time as this has already been taken care of by
close (which is called from hangup as part of disconnect).
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Thu, 21 Mar 2013 11:36:40 +0000 (12:36 +0100)]
USB: ssu100: remove custom close operation
The generic close operation will be used if the close field is left
uninitialised.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Thu, 21 Mar 2013 11:36:39 +0000 (12:36 +0100)]
USB: ssu100: remove explicit initialisation of disconnect
The disconnect callback is set to the generic implementation by
usb-serial core if NULL.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Thu, 21 Mar 2013 11:36:38 +0000 (12:36 +0100)]
USB: serial: remove bogus disconnect test in cleanup
Remove bogus (and unnecessary) test for serial->dev being NULL in
cleanup.
The device is never cleared, and cleanup is never called after a
completed disconnect anyway.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Thu, 21 Mar 2013 11:36:37 +0000 (12:36 +0100)]
USB: usb_wwan: remove bogus disconnect test in close
Remove bogus (and unnecessary) test for serial->dev being NULL in close.
The device is never cleared, and close is never called after a completed
disconnect anyway.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Thu, 21 Mar 2013 11:36:36 +0000 (12:36 +0100)]
USB: sierra: remove bogus disconnect test in close
Remove bogus (and unnecessary) test for serial->dev being NULL in close.
The device is never cleared, and close is never called after a completed
disconnect anyway.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Thu, 21 Mar 2013 11:36:35 +0000 (12:36 +0100)]
USB: mos7840: remove bogus disconnect test in close
Remove bogus (and unnecessary) test for serial->dev being NULL in close.
The device is never cleared, and close is never called after a completed
disconnect anyway.
Simplify urb killing, and remove some related debug and dead code while
at it.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Thu, 21 Mar 2013 11:36:34 +0000 (12:36 +0100)]
USB: keyspan_pda: remove bogus disconnect test in close
Remove bogus (and unnecessary) test for serial->dev being NULL in close.
The device is never cleared, and close is never called after a completed
disconnect anyway.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Thu, 21 Mar 2013 11:36:33 +0000 (12:36 +0100)]
USB: keyspan_pda: remove bogus disconnect test from dtr_rts
Remove bogus (and unnecessary) test for serial->dev being NULL in
dtr_rts.
The device is never cleared, and disconnect is handled for dtr_rts in
usb-serial core anyway.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Thu, 21 Mar 2013 11:36:32 +0000 (12:36 +0100)]
USB: keyspan: remove bogus disconnect test in close
Remove bogus (and unnecessary) test for serial->dev being NULL in close.
The device is never cleared, and close is never called after a completed
disconnect anyway.
Remove some out-commented bogus code while at it.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Thu, 21 Mar 2013 11:36:31 +0000 (12:36 +0100)]
USB: iuu_phoenix: remove bogus disconnect test in close
Remove bogus (and unnecessary) test for serial->dev being NULL in close.
The device is never cleared, and close is never called after a completed
disconnect anyway.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Thu, 21 Mar 2013 11:36:30 +0000 (12:36 +0100)]
USB: digi_acceleport: remove bogus disconnect test in close
Remove bogus (and unnecessary) test for serial->dev being NULL in close.
The device is never cleared, and close is never called after a completed
disconnect anyway.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Thu, 21 Mar 2013 11:36:29 +0000 (12:36 +0100)]
USB: cyberjack: remove bogus disconnect test in close
Remove bogus (and unnecessary) test for serial->dev being NULL in close.
The device is never cleared, and close is never called after a completed
disconnect anyway.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Thu, 21 Mar 2013 11:36:28 +0000 (12:36 +0100)]
USB: ark3116: remove bogus disconnect test in close
Remove bogus (and unnecessary) test for serial->dev being NULL in close.
The device is never cleared, and close is never called after a completed
disconnect anyway.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Thu, 21 Mar 2013 11:36:27 +0000 (12:36 +0100)]
USB: serial: remove port number from generic-driver debug
Remove redundant port number from debug output (already printed as part
of device name).
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Thu, 21 Mar 2013 11:36:26 +0000 (12:36 +0100)]
USB: serial: remove redundant allocation error messages
Failed allocations already get an OOM message and a stack dump.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Thu, 21 Mar 2013 11:36:25 +0000 (12:36 +0100)]
USB: serial: clean up debug info
Remove redundant port number from debug output (already printed as part
of device name).
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Thu, 21 Mar 2013 11:36:24 +0000 (12:36 +0100)]
USB: serial: remove redundant comments
Remove redundant comments and fix some minor coding style issues.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Thu, 21 Mar 2013 11:36:23 +0000 (12:36 +0100)]
USB: serial: rename tty-port callbacks
Rename the tty-port callbacks using a common prefix to more clearly
separate them from the tty and usb driver callbacks.
Rename serial_down to serial_port_shutdown to match the callback name.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Thu, 21 Mar 2013 11:36:22 +0000 (12:36 +0100)]
USB: pl2303: make set_control_lines a port operation
Pass usb-serial port rather than usb device to set_control_lines, and
make sure port device is used for all port related debugging.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Thu, 21 Mar 2013 11:36:21 +0000 (12:36 +0100)]
USB: pl2303: use interface device for debug
Use interface rather than usb-serial device for debugging interface
related operations. This gives more descriptive messages, such as
[ 905.669436] pl2303 1-4.1:1.0: 0x40:0x1:0x8:0x0 0
rather than
[ 341.943535] usb 1-4.1: 0x40:0x1:0x8:0x0 0
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>