panic: Make panic_on_oops configurable

Several distros set this by default by patching panic_on_oops.
It seems to fit with the BOOTPARAM_{HARD,SOFT}_PANIC options
though, so let's add a Kconfig entry and reduce some more
upstream delta.

Signed-off-by: Kyle McMartin <kyle@redhat.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/20120411121529.GH26688@redacted.bos.redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
ARM: OMAP2+: INTC: fix suspend abort, set IRQCHIP_SKIP_SET_WAKE

Without an ->irq_set_wake() method in an irq_chip, calls to
enable_irq_wake() will fail.  This also causes these interrupts to not
be able to abort suspend (via check_wakeup_irqs() in late suspend.)

Currently, we don't implement ->irq_set_wake() for INTC interrupts
because they default to be wakeup enabled by setting the GRPSEL bits
in PM init.  Even though there is no ->irq_set_wake(), we want
enable_irq_wake() to succeed so these interrupts can abort suspend
when necessary.

To fix, set IRQCHIP_SKIP_SET_WAKE flag for all the INTC
interrupts which avoids trying to check irq_chip->irq_set_wake()
and failing when it doesn't exist.

Longer term, we need to implement ->irq_set_wake() for the INTC
which can manage the appropriate GRPSEL bits.

Signed-off-by: NeilBrown <neilb@suse.de>
[khilman@ti.com: rework changelog]
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Signed-off-by: Kevin Hilman <khilman@ti.com>
ARM: OMAP3: PM: fix shared PRCM interrupts: leave disabled at boot

By default, request_irq() will auto-enable the requested IRQ.

For PRCM interrupts, we may want to avoid that until the PM core code
is fully ready to handle the interrupts.  This is particularily true
for IO pad interrupts on OMAP3, which are shared between the hwmod
core and the PRM core.

In order to avoid PRCM IO-chain interrupts until the PM core is ready
to handle them, ready, set the IRQ_NOAUTOEN flag for the PRCM IO-chain
interrupt,  which means it will remain disabled after request_irq().

Then, explicitly enable the PRCM interrupts after the request_irq() in
the PM core (but not in the hwmod core.)

Special thanks to Tero Kristo for suggesting to isolate the fix to
only the IO-chain interrupt on OMAP3 instead of all PRCM interrupts.

Cc: Tero Kristo <t-kristo@ti.com>
Acked-by: Paul Walmsley <paul@pwsan.com>
Signed-off-by: Kevin Hilman <khilman@ti.com>
arm: omap3: am35x: Don't mark missing features as present

The Chip Identification register on the am35x family of SoCs
has bits 12, 7:5, and 3:2 marked as reserved and are read as
zeroes.  Unfortunately, on other omap SoCs, a 0 bit means a
feature is "Full Use" so the OMAP3_CHECK_FEATURE() macro
called by omap3_check_features() will incorrectly interpret
those zeroes to mean that a feature is present even though it
isn't.  To fix that, the feature bits that are incorrectly
set (namely, OMAP3_HAS_IVA and OMAP3_HAS_ISP) need to be
cleared after all of the calls to OMAP3_CHECK_FEATURE() in
omap3_check_features() are made.

Signed-off-by: Mark A. Greer <mgreer@animalcreek.com>
[khilman@ti.com: use soc_is_am35xx() instead of cpu_is_am35xx()]
Signed-off-by: Kevin Hilman <khilman@ti.com>
ARM i.MX5: fix gpt peripheral clock path

- The gpt peripheral clk parent is per_root, not ipg
- The register for selectin per_lp_apm and per_root is
  MXC_CCM_CBCMR, not MXC_CCM_CBCDR

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
ARM: i.MX: change timer clock from ipg to perclk

Contrary to the ipg clock the perclk rate is not changed or
gated in low power mode, so we choose perclk for gpt.

With the port to the common clock framework as a side effect
the timer used the rate returned from the peripheral clock
but the hardware was still programmed to use the ipg clock,
so this patch only changes the hardware to really use the
clock it already assumed.

Signed-off-by: Richard Zhao <richard.zhao@freescale.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
ARM i.MX: remove now unnecessary argument from mxc_timer_init

As the timer code now does a clk_get to get its clock we don't
need the struct clk argument anymore.
This also changes the alternative EPIT timer to do a clk_get.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
ARM: imx6q: prepare and enable init on clks directly instead of clk_get first

This also removes the usboh3 clk from the initially turned on
clocks which leaked in from an internal development tree.

Signed-off-by: Richard Zhao <richard.zhao@freescale.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
kdump: Execute kmsg_dump(KMSG_DUMP_PANIC) after smp_send_stop()

This patch moves kmsg_dump(KMSG_DUMP_PANIC) below smp_send_stop(),
to serialize the crash-logging process via smp_send_stop() and to
thus retrieve a more stable crash image of all CPUs stopped.

Signed-off-by: Seiji Aguchi <seiji.aguchi@hds.com>
Acked-by: Don Zickus <dzickus@redhat.com>
Cc: dle-develop@lists.sourceforge.net <dle-develop@lists.sourceforge.net>
Cc: Satoru Moriya <satoru.moriya@hds.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: a.p.zijlstra@chello.nl <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/5C4C569E8A4B9B42A84A977CF070A35B2E4D7A5CE2@USINDEVS01.corp.hds.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
xen/hvc: Collapse error logic.

All of the error paths are doing the same logic. In which
case we might as well collapse them in one path.

CC: stable@kernel.org
Acked-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
xen/hvc: Fix error cases around HVM_PARAM_CONSOLE_PFN

We weren't resetting the parameter to be passed in to a
known default. Nor were we checking the return value of
hvm_get_parameter.

CC: stable@kernel.org
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
xen/hvc: Check HVM_PARAM_CONSOLE_[EVTCHN|PFN] for correctness.

We need to make sure that those parameters are setup to be correct.
As such the value of 0 is deemed invalid and we find that we
bail out. The hypervisor sets by default all of them to be zero
and when the hypercall is done does a simple:

 a.value = d->arch.hvm_domain.params[a.index];

Which means that if the Xen toolstack forgot to setup the proper
HVM_PARAM_CONSOLE_EVTCHN (or the PFN one), we would get the
default value of 0 and use that.

CC: stable@kernel.org
Fixes-Oracle-Bug: 14091238
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
ARM: OMAP3: clock data: cleanup AM3[35]x SoC detection

Use the more generic SoC family soc_is_am35xx() instead of the specific
cpu_is_omap3517() (which is being removed.)

Acked-by: Vaibhav Hiremath <hvaibhav@ti.com>
Tested-by: Vaibhav Hiremath <hvaibhav@ti.com>
Tested-by: Mark A. Greer <mgreer@animalcreek.com>
Cc: Paul Walmsley <paul@pwsan.com>
Signed-off-by: Kevin Hilman <khilman@ti.com>
ARM: OMAP: SoC detection: remove unused cpu_is macros

Remove multiple unused cpu_is_omap35xx macros.

In particular, the cpu_is_omap35* macros for 3503, 3515, 3525 are removed
because they are using omap_has_* feature checks and we want to
remove specific feature detection from SoC family detection.

There are no longer any cpu_is_* checks that depend on specific IP
detection.

Acked-by: Vaibhav Hiremath <hvaibhav@ti.com>
Tested-by: Vaibhav Hiremath <hvaibhav@ti.com>
Tested-by: Mark A. Greer <mgreer@animalcreek.com>
Signed-off-by: Kevin Hilman <khilman@ti.com>
ARM: mx31_3ds: Fix build due to missing IMX_HAVE_PLATFORM_IMX_SSI

commit 5fb86e5 (ARM: mx31_3ds: Add sound support) missed to select IMX_HAVE_PLATFORM_IMX_SSI,
which causes the following build error when only mx31_3ds is selected:

arch/arm/mach-imx/built-in.o: In function `mx31_3ds_init':
mach-mx31_3ds.c:(.init.text+0x15dc): undefined reference to `imx_add_imx_ssi'
mach-mx31_3ds.c:(.init.text+0x16b8): undefined reference to `imx31_imx_ssi_data'

Select IMX_HAVE_PLATFORM_IMX_SSI to fix it.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
ARM: imx: only specify i2c device type once

The first argument of I2C_BOARD_INFO is used to assign .type, so drop
second assignment.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
ARM: imx: only call l2x0_init if it's available

This fixes a build failure with CONFIG_CACHE_L2X0=n:

	arch/arm/mach-imx/built-in.o: In function `imx3_init_l2x0':
	imx53-dt.c:(.init.text+0x190): undefined reference to `l2x0_init'
	make[2]: *** [.tmp_vmlinux1] Error 1
	make[1]: *** [sub-make] Error 2
	make: *** [all] Error 2

When the l2 cache isn't enabled the quirk introduced in
9524705 (MX35: Fix bogus L2 cache settings) doesn't need to be done
either.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
xen/events: Add WARN_ON when quick lookup found invalid type.

All of the bind_XYZ_to_irq do a quick lookup to see if the
event exists. And if it does, then the initialized IRQ number
is returned instead of initializing a new IRQ number.

This patch adds an extra logic to check that the type returned
is proper one and that there is an IRQ handler setup for it.

This patch has the benefit of being able to find drivers that
are doing something naught.

[v1: Enhanced based on Stefano's review]
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
xen/pci: Check for PCI bridge before using it.

Some SR-IOV devices may use more than one bus number, but there is no real bridges
because that have internal routing mechanism. So need to check whether the bridge is
existing before using it.

Signed-off-by: Yang Zhang <yang.z.zhang@Intel.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
xen/balloon: Subtract from xen_released_pages the count that is populated.

We did not take into account that xen_released_pages would be
used outside the initial E820 parsing code. As such we would
did not subtract from xen_released_pages the count of pages
that we had populated back (instead we just did a simple
extra_pages = released - populated).

The balloon driver uses xen_released_pages to set the initial
current_pages count.  If this is wrong (too low) then when a new
(higher) target is set, the balloon driver will request too many pages
from Xen."

This fixes errors such as:

(XEN) memory.c:133:d0 Could not allocate order=0 extent: id=0 memflags=0 (51 of 512)
during bootup and
free_memory            : 0

where the free_memory should be 128.

Acked-by: David Vrabel <david.vrabel@citrix.com>
[v1: Per David's review made the git commit better]
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>