linux-stable.git/arch/powerpc, branch linux-2.6.31.y

powerpc: TIF_ABI_PENDING bit removal

2010-04-01T22:55:57+00:00

commit 94f28da8409c6059135e89ac64a0839993124155 upstream.

Here are the powerpc bits to remove TIF_ABI_PENDING now that
set_personality() is called at the appropriate place in exec.

Signed-off-by: Andreas Schwab 
Signed-off-by: Benjamin Herrenschmidt 
Signed-off-by: Greg Kroah-Hartman 
Signed-off-by: Stefan Bader

powerpc: Fix usage of 64-bit instruction in 32-bit altivec code

2009-12-18T21:43:47+00:00

commit e090aa80321b64c3b793f3b047e31ecf1af9538d upstream.

e821ea70f3b4873b50056a1e0f74befed1014c09 introduced a bug by copying
some 64-bit originated code as-is to be used by both 32 and 64-bit
but this code contains a 64-bit ony "cmpdi" instruction.

This changes it to cmpwi, which is fine since VRSAVE can only contains
a 32-bit value anyway.

Signed-off-by: Benjamin Herrenschmidt 
Signed-off-by: Greg Kroah-Hartman

powerpc: Fix DEBUG_HIGHMEM build break from d4515646699

2009-12-08T18:21:10+00:00

commit e8105903d78c81119754a42926951d9d17e191ba upstream.

Code was added to mm/higmem.c that depends on several
kmap types that powerpc does not support.  We add dummy
invalid definitions for KM_NMI, KM_NM_PTE, and KM_IRQ_PTE.

According to list discussion, this fix should not be needed
anymore starting with 2.6.33.  The code is commented to this
effect so hopefully we will remember to remove this.

Signed-off-by: Becky Bruce 
Signed-off-by: Benjamin Herrenschmidt 
Signed-off-by: Greg Kroah-Hartman

powerpc: Fix some late PowerMac G5 with PCIe ATI graphics

2009-11-10T00:23:15+00:00

commit cede3930f0ca6fef353fa01306c72a01420bd45e upstream.

A misconfiguration by the firmware of the U4 PCIe bridge on PowerMac G5
with the U4 bridge (latest generations, may also affect the iMac G5
"iSight") is causing us to re-assign the PCI BARs of the video card,
which can get it out of sync with the firmware, thus breaking offb.

This works around it by fixing up the bridge configuration properly
at boot time. It also fixes a bug where the firmware provides us with
an incorrect set of accessible regions in the device-tree.

Signed-off-by: Benjamin Herrenschmidt 
Signed-off-by: Greg Kroah-Hartman

powerpc/pci: Fix regression in powerpc MSI-X

2009-11-10T00:23:14+00:00

commit 8435b027b87a78145992c37b0b8ed0f1b7761bf0 upstream.

Patch f598282f5145036312d90875d0ed5c14b49fd8a7 exposed a problem in
powerpc MSI-X functionality, making network interfaces such as ixgbe
and cxgb3 stop to work when MSI-X is enabled. RX interrupts were not
being generated.

The problem was caused because MSI irq was not being effectively
unmasked after device initialization.

Signed-off-by: Andre Detsch 
Signed-off-by: Michael Ellerman 
Signed-off-by: Benjamin Herrenschmidt 
Signed-off-by: Greg Kroah-Hartman

powerpc/pmac: Fix issues with sleep on some powerbooks

2009-11-10T00:23:12+00:00

commit 11a50873ef2b3c1c3fe99a661c22c08f35d93553 upstream.

Since the change of how interrupts are disabled during suspend,
certain PowerBook models started exhibiting various issues during
suspend or resume from sleep.

I finally tracked it down to the code that runs various "platform"
functions (kind of little scripts extracted from the device-tree),
which uses our i2c and PMU drivers expecting interrutps to work,
and at a time where with the new scheme, they have been disabled.

This causes timeouts internally which for some reason results in
the PMU being unable to see the trackpad, among other issues, really
it depends on the machine. Most of the time, we fail to properly adjust
some clocks for suspend/resume so the results are not always
predictable.

This patch fixes it by using IRQF_TIMER for both the PMU and the I2C
interrupts. I prefer doing it this way than moving the call sites since
I really want those platform functions to still be called after all
drivers (and before sysdevs).

We also do a slight cleanup to via-pmu.c driver to make sure the
ADB autopoll mask is handled correctly when doing bus resets

Signed-off-by: Benjamin Herrenschmidt 
Signed-off-by: Greg Kroah-Hartman

powerpc/pmac: Fix PowerSurge SMP IPI allocation

2009-11-10T00:23:11+00:00

commit 527b3639616b21c257518ee7c26fbf05232db0c0 upstream.

The code for setting up the IPIs for SMP PowerSurge marchines bitrot,
it needs to properly map the HW interrupt number

Signed-off-by: Benjamin Herrenschmidt 
Signed-off-by: Greg Kroah-Hartman

powerpc: Remove SMP warning from PowerMac cpufreq

2009-11-10T00:23:04+00:00

commit 6fdc31a2b86cf1f98e3eed896578ad9659eeb0f8 upstream.

On Thu, Aug 13, 2009 at 04:14:58PM +1000, Benjamin Herrenschmidt wrote:
> On Tue, 2009-08-11 at 11:39 +0200, Bastian Blank wrote:
> > This patch just disables this driver on SMP kernels, as it is obviously
> > not supported.
> Why not remove the #error instead ? :-) I don't think it's still
> meaningful, especially since we use the timebase for delays nowadays
> which doesn't depend on the CPU frequency...

Your call. Take this one:

The build of a PowerMac 32bit kernel currently fails with

error: #warning "WARNING, CPUFREQ not recommended on SMP kernels"

Thie patch removes the not longer applicable SMP warning from the
PowerMac cpufreq code.

Signed-off-by: Bastian Blank 
Signed-off-by: Benjamin Herrenschmidt 
Signed-off-by: Greg Kroah-Hartman

arm, cris, mips, sparc, powerpc, um, xtensa: fix build with bash 4.0

2009-10-22T22:11:51+00:00

commit 51b563fc93c8cb5bff1d67a0a71c374e4a4ea049 upstream.

Albin Tonnerre  reported:

    Bash 4 filters out variables which contain a dot in them.
    This happends to be the case of CPPFLAGS_vmlinux.lds.
    This is rather unfortunate, as it now causes
    build failures when using SHELL=/bin/bash to compile,
    or when bash happens to be used by make (eg when it's /bin/sh)

Remove the common definition of CPPFLAGS_vmlinux.lds by
pushing relevant stuff to either Makefile.build or the
arch specific kernel/Makefile where we build the linker script.

This is also nice cleanup as we move the information out where
it is used.

Notes for the different architectures touched:

arm - we use an already exported symbol
cris - we use a config symbol aleady available
       [Not build tested]
mips - the jiffies complexity has moved to vmlinux.lds.S where we need it.
       Added a few variables to CPPFLAGS - they are only used by
       the linker script.
       [Not build tested]
powerpc - removed assignment that is not needed
          [not build tested]
sparc - simplified it using $(BITS)
um - introduced a few new exported variables to deal with this
xtensa - added options to CPP invocation
         [not build tested]

Cc: Albin Tonnerre 
Cc: Russell King 
Cc: Mikael Starvik 
Cc: Jesper Nilsson 
Cc: Benjamin Herrenschmidt 
Cc: Paul Mackerras 
Cc: "David S. Miller" 
Cc: Jeff Dike 
Cc: Chris Zankel 
Signed-off-by: Sam Ravnborg 
Signed-off-by: Greg Kroah-Hartman

powerpc: Fix incorrect setting of __HAVE_ARCH_PTE_SPECIAL

2009-10-05T16:33:06+00:00

[I'm going to fix upstream differently, by having all CPU types
actually support _PAGE_SPECIAL, but I prefer the simple and obvious
fix for -stable. -- Ben]

The test that decides whether to define __HAVE_ARCH_PTE_SPECIAL on
powerpc is bogus and will end up always defining it, even when
_PAGE_SPECIAL is not supported (in which case it's 0) such as on
8xx or 40x processors.

Signed-off-by: Bernhard Weirich 
Signed-off-by: Benjamin Herrenschmidt 
Signed-off-by: Greg Kroah-Hartman