Tina Yang <tina.yang@oracle.com> discovered an MSI related problem
when doing kdump.  The problem is that the kexec kernel is booted
without going through system reset, and as a result, MSI may already
be enabled when tg3_init_one() is called.  tg3_init_one() calls
pci_save_state() which will save the stale MSI state.  Later on in
tg3_open(), we call pci_enable_msi() to reconfigure MSI on the chip
before we reset the chip.  After chip reset, we call
pci_restore_state() which will put the stale MSI address/data back
onto the chip.

This is no longer a problem in the latest kernel because
pci_restore_state() has been changed to restore MSI state from
internal data structures which will guarantee restoring the proper
MSI state.

But I think we should still fix it.  Our save and restore sequence
can still cause very subtle problems down the road.  The fix is to
have our own functions save and restore precisely what we need.  We
also change it to save and restore state inside tg3_chip_reset() in a
more straight forward way.

Thanks to Tina for helping to test and debug the problem.

[ Bump driver version and release date. -DaveM ]
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>

The rtnl is held in ieee80211_sta.c to prevent some potential
configuration races with userspace. Unfortunately, it also has the
potential for deadlocks on interface down. This patch removes the
rtnl locking to eliminate the deadlocks.
Signed-off-by: Michael Wu <flamingice@sourmilk.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

net/mac80211/ieee80211.c: In function ieee80211_register_hw:
net/mac80211/ieee80211.c:4989: warning: comparison of distinct pointer types lacks a cast

Size of ieee80211_tx_status_rtap_hdr structure will never be greater than
unsigned int.
Signed-off-by: Jiri Benc <jbenc@suse.cz>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

Introduce API to dynamically register and unregister multicast groups.
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Acked-by: Patrick McHardy <kaber@trash.net>
Acked-by: Jamal Hadi Salim <hadi@cyberus.ca>
Signed-off-by: David S. Miller <davem@davemloft.net>

Allow kicking listeners out of a multicast group when necessary
(for example if that group is going to be removed.)
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Acked-by: Patrick McHardy <kaber@trash.net>
Acked-by: Jamal Hadi Salim <hadi@cyberus.ca>
Signed-off-by: David S. Miller <davem@davemloft.net>

Allow changing the number of groups for a netlink family
after it has been created, use RCU to protect the listeners
bitmap keeping netlink_has_listeners() lock-free.
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Acked-by: Patrick McHardy <kaber@trash.net>
Acked-by: Jamal Hadi Salim <hadi@cyberus.ca>
Signed-off-by: David S. Miller <davem@davemloft.net>

The rfkill state Sysfs attribute should be made writable,
we already pass the argument for the store handler,
so we only need to update the permissions flag.
Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/hskinnemoen/avr32-2.6:
  [AVR32] Initialize phy_mask for both macb devices
  [AVR32] Fix atomic_add_unless() and atomic_sub_unless()
  [AVR32] Correct misspelled CONFIG_BLK_DEV_INITRD variable.
  [AVR32] Fix build error in parse_tag_rdimg()
  [AVR32] Don't wire up macb0 unless SW6 is in default position
  [AVR32] Wire up SSC platform device 0 as TX on ATSTK1000 board
  [AVR32] Add Atmel SSC driver platform device to AT32AP architecture
  [AVR32] Remove optimization of unaligned word loads
  [AVR32] Make STK1000 mux settings configurable
  [AVR32] CPU frequency scaling for AT32AP
  [AVR32] Split SM device into PM, RTC, WDT and EIC
  [AVR32] faster avr32 unaligned access

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/hpa/linux-2.6-x86setup:
  [PATCH] x86: do not recompile boot for each build
  [x86 setup] Save/restore DS around invocations of INT 10h
  [x86 setup] VGA: Clear the Protect bit before setting the vertical height
  [x86 setup] Fix assembly constraints
  [x86 setup] build/tools.c: fix comment
  [x86 setup] MAINTAINERS: document x86 setup code git tree

The TRACE_IRQS_ON function in iret_exc: calls a C function without
ensuring that the segments are set properly. Move the trace function and
the enabling of interrupt into the C stub.
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

The code for LDT segment selectors was not robust in the face of a bogus
selector set in %cs via ptrace before the single-step was done.
Signed-off-by: Roland McGrath <roland@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

The STK1000 uses pullups on the MDIO lines to the PHY, but they are
too weak. This causes the PHY layer to detect PHYs on all possible MII
addresses. Mask out all but the correct address to prevent this from
happening.
Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>

These functions depend on "result" being initalized to 0, but "result"
is not included as an input constraint to the inline assembly block
following its initialization, only as an output constraint. Thus gcc
thinks it doesn't need to initialize it, so result ends up undefined
if the "unless" condition is true.

This fixes an oops in sunrpc where the faulty atomics caused
rpciod_up() to not start the workqueue as it should.
Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>

Signed-off-by: Robert P. J. Day <rpjday@mindspring.com>
Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>

This code is inside an #ifdef with a misspelled config symbol, so it
hasn't been used for a long time. Fix it before fixing the config
symbol to keep bisection working.
Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>

If the user wants to sacrifice macb0 for more GPIOs, let him.
Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>

Signed-off-by: Hans-Christian Egtvedt <hcegtvedt@atmel.com>
Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>

This patch adds register definitions, clocks and IRQs to the platform devices.
Signed-off-by: Hans-Christian Egtvedt <hcegtvedt@atmel.com>
Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>

If we let unaligned word loads bypass the generic unaligned handling,
gcc may combine it with a swap.b instruction and turn it into a ldwsp
instruction, which does not work with unaligned addresses.

Revert the optimization to prevent the RNDIS driver from crashing.
Hopefully we'll figure something out later (it may be better to do the
optimization in gcc.)
Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>

This adds some STK1002-specific config options covering the jumper settings,
so the kernel can automatically be configured to include the relevant devices.

One of them replaces the previous internal SW2_DEFAULT setting; SPI config
is affected by two of the jumpers; and a fourth one switches between LCD and
the second Ethernet connector.  (There's more that to be done.)
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>

This patch enables CPU frequency scaling for AT32AP devices. This will
enable the CPU to scale between the speed of the high speed bus and
the master clock and thus save some power.

The patch also adds a parent to cpu_clk and a cpu_clk_set_rate to
enable changing the CPU clock divider in a sane way.

The driver does not check if the given rate is 0, thus resulting in a
div by 0.  I think this check should be go into the clk_set_rate
framework, and not here.

Tested on AT32AP7000/ATSTK1000.

Hardware documentation can be found in the AT32AP7000 datasheet.
Signed-off-by: Hans-Christian Egtvedt <hcegtvedt@atmel.com>
Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>

Split the SM platform device into separate platform devices for PM,
RTC, WDT and EIC. This is more correct according to the documentation
and allows us to simplify the code a little.

Also turn the EIC driver into a real platform driver.
Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
Acked-by: Hans-Christian Egtvedt <hcegtvedt@atmel.com>

Use a more conventional implementation for unaligned access, and include
an AT32AP-specific optimization:  the CPU will handle unaligned words.

The result is always faster and smaller for 8, 16, and 32 bit values.
For 64 bit quantities, it's presumably larger.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>

Keep the arch/i386/boot directory from being rebuilt every time.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>