linux-toradex.git/drivers/usb/host, branch v2.6.21.4

EHCI: fix remote wakeup regression in 2.6.21-rc

2007-04-11T17:44:15+00:00

There is one significant difference between the behavior of root hubs
(as embodied in host controller hardware) and external hubs: When a
remote-wakeup signal is received, an external hub sends an interrupt
message at the _end_ of the resume sequence but a root hub generates
and interrupt at the _beginning_ of the resume sequence.  The host
system must poll for the end of the sequence.

When ehci-hcd was converted to interrupt-driven operation instead of
using polling, the remaining need for this particular poll was
overlooked.  This patch (as894) fixes the problem.

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

UHCI: Fix problem caused by lack of terminating QH

2007-03-26T21:17:48+00:00

This patch (as871) fixes a problem introduced by an earlier change.
It turns out that some systems really do need to have a terminating
skeleton QH present whenever FSBR is on.  I don't know any way to tell
which systems do need it and which don't; the easiest answer is to
have it there always.

This fixes the NumLock-hang bug reported by Jiri Slaby.

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

USB: fix Unaligned access in EHCI driver

2007-03-10T03:52:25+00:00

I get following warnings on spar64:
Kernel unaligned access at TPC[1000c9e4] ehci_hub_control+0x54c/0x68c [ehci_hcd]

Despite of the comment in the patched code, the type cast used there
does make unaligned access. The fix was made as it's done in
ohci-hub.c.

Signed-off-by: Max Dmitrichenko 
Signed-off-by: Greg Kroah-Hartman

UHCI: fix port resume problem

2007-03-10T03:52:23+00:00

This patch (as863) fixes a problem encountered sometimes when resuming
a port on a UHCI controller.  The hardware may turn off the
Resume-Detect bit before turning off the Suspend bit, leading usbcore
to think that the port is still suspended and the resume has failed.
The patch makes uhci_finish_suspend() wait until both bits are safely
off.

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

UHCI: Eliminate asynchronous skeleton Queue Headers

2007-02-23T23:03:45+00:00

This patch (as856) attempts to improve the performance of uhci-hcd by
removing the asynchronous skeleton Queue Headers.  They don't contain
any useful information but the controller has to read through them at
least once every millisecond, incurring a non-zero DMA overhead.

Now all the asynchronous queues are combined, along with the period-1
interrupt queue, into a single list with a single skeleton QH.  The
start of the low-speed control, full-speed control, and bulk sublists
is determined by linear search.  Since there should rarely be more
than a couple of QHs in the list, the searches should incur a much
smaller total load than keeping the skeleton QHs.

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

UHCI: Add macros for computing DMA values

2007-02-23T23:03:45+00:00

This patch (as855) adds some convenience macros to uhci-hcd, to help
simplify the code for computing hardware DMA pointers.

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

Merge git://git.kernel.org/pub/scm/linux/kernel/git/bunk/trivial

2007-02-19T21:29:02+00:00

* git://git.kernel.org/pub/scm/linux/kernel/git/bunk/trivial: (25 commits)
  Documentation/kernel-docs.txt update.
  arch/cris: typo in KERN_INFO
  Storage class should be before const qualifier
  kernel/printk.c: comment fix
  update I/O sched Kconfig help texts - CFQ is now default, not AS.
  Remove duplicate listing of Cris arch from README
  kbuild: more doc. cleanups
  doc: make doc. for maxcpus= more visible
  drivers/net/eexpress.c: remove duplicate comment
  add a help text for BLK_DEV_GENERIC
  correct a dead URL in the IP_MULTICAST help text
  fix the BAYCOM_SER_HDX help text
  fix SCSI_SCAN_ASYNC help text
  trivial documentation patch for platform.txt
  Fix typos concerning hierarchy
  Fix comment typo "spin_lock_irqrestore".
  Fix misspellings of "agressive".
  drivers/scsi/a100u2w.c: trivial typo patch
  Correct trivial typo in log2.h.
  Remove useless FIND_FIRST_BIT() macro from cardbus.c.
  ...

Replace remaining references to "driverfs" with "sysfs".

2007-02-17T18:13:42+00:00

Globally, s/driverfs/sysfs/g.

Signed-off-by: Robert P. J. Day 
Signed-off-by: Adrian Bunk

USB: at91-ohci, handle extra at91sam9261 ahb clock

2007-02-16T23:32:24+00:00

The AT91SAM9261 needs to activate an AHB clock (HCK0) to use the USB Host
controller. Previously clock.c would just enable it at startup, but now
all the unused clocks are automatically disabled.

Based on patch from Nicolas Ferre.

Signed-off-by: David Brownell 
Signed-off-by: Greg Kroah-Hartman

USB: change init to devinit for isp116x_probe

2007-02-16T23:32:22+00:00

Change __init to __devinit for isp116x_probe.

Resolves MODPOST warning:

WARNING: drivers/usb/host/isp116x-hcd.o - Section mismatch: reference to
.init.text:isp116x_probe from .data.rel.local between 'isp116x_driver' (at
offset 0x0) and 'isp116x_hc_driver'

Signed-off-by: Prarit Bhargava 
Signed-off-by: Andrew Morton 
Signed-off-by: Greg Kroah-Hartman