linux-toradex.git/arch/x86/kernel/hpet.c, branch v4.2.7

x86/hpet: Use proper hpet device number for MSI allocation

2015-06-21T14:38:40+00:00

hpet_assign_irq() is called with hpet_device->num as "hardware
interrupt number", but hpet_device->num is initialized after the
interrupt has been assigned, so it's always 0. As a consequence only
the first MSI allocation succeeds, the following ones fail because the
"hardware interrupt number" already exists.

Move the initialization of dev->num and other fields before the call
to hpet_assign_irq(), which is the ordering before the offending
commit which introduced that regression.

Fixes: "3cb96f0c9733 x86/hpet: Enhance HPET IRQ to support hierarchical irqdomains"
Reported-by: Sergey Senozhatsky 
Signed-off-by: Thomas Gleixner 
Link: http://lkml.kernel.org/r/alpine.DEB.2.11.1506211635010.4107@nanos
Cc: Jiang Liu 
Cc: Borislav Petkov

x86/hpet: Check for irq==0 when allocating hpet MSI interrupts

2015-06-20T10:00:58+00:00

irq == 0 is not a valid irq for a irqdomain MSI allocation, but hpet
code checks only for negative return values.

Reported-by: Sergey Senozhatsky 
Cc: Borislav Petkov 
Link: http://lkml.kernel.org/r/558447AF.30703@linux.intel.com
Signed-off-by: Thomas Gleixner

x86/irq: Move irqdomain specific code into asm/irqdomain.h

2015-04-24T13:36:55+00:00

Now we have dedicated asm/irqdomain.h, so move irqdomain specific
code into it.

Signed-off-by: Jiang Liu 
Cc: Konrad Rzeszutek Wilk 
Cc: David Cohen 
Cc: Sander Eikelenboom 
Cc: David Vrabel 
Cc: Tony Luck 
Cc: Joerg Roedel 
Cc: Greg Kroah-Hartman 
Cc: Bjorn Helgaas 
Cc: Benjamin Herrenschmidt 
Cc: Rafael J. Wysocki 
Cc: Randy Dunlap 
Cc: Yinghai Lu 
Cc: Borislav Petkov 
Cc: Dimitri Sivanich 
Cc: Joerg Roedel 
Cc: Andy Lutomirski 
Link: http://lkml.kernel.org/r/1428978610-28986-33-git-send-email-jiang.liu@linux.intel.com
Signed-off-by: Thomas Gleixner

x86/hpet: Enhance HPET IRQ to support hierarchical irqdomains

2015-04-24T13:36:49+00:00

Signed-off-by: Jiang Liu 
Cc: Konrad Rzeszutek Wilk 
Cc: David Cohen 
Cc: Sander Eikelenboom 
Cc: David Vrabel 
Cc: Tony Luck 
Cc: Joerg Roedel 
Cc: Greg Kroah-Hartman 
Cc: Srivatsa S. Bhat 
Cc: Bjorn Helgaas 
Cc: Benjamin Herrenschmidt 
Cc: Rafael J. Wysocki 
Cc: Randy Dunlap 
Cc: Yinghai Lu 
Cc: Borislav Petkov 
Cc: Dimitri Sivanich 
Cc: Andy Lutomirski 
Link: http://lkml.kernel.org/r/1428905519-23704-13-git-send-email-jiang.liu@linux.intel.com
Signed-off-by: Thomas Gleixner

x86/hpet: Use new irqdomain interfaces to allocate/free IRQ

2015-04-24T13:36:48+00:00

Use new irqdomain interfaces to allocate/free IRQ for HPET, so we can
remove GENERIC_IRQ_LEGACY_ALLOC_HWIRQ later.

Signed-off-by: Jiang Liu 
Cc: Konrad Rzeszutek Wilk 
Cc: David Cohen 
Cc: Sander Eikelenboom 
Cc: David Vrabel 
Cc: Tony Luck 
Cc: Joerg Roedel 
Cc: Greg Kroah-Hartman 
Cc: Srivatsa S. Bhat 
Cc: Bjorn Helgaas 
Cc: Benjamin Herrenschmidt 
Cc: Rafael J. Wysocki 
Cc: Randy Dunlap 
Cc: Yinghai Lu 
Cc: Borislav Petkov 
Cc: Dimitri Sivanich 
Cc: Andy Lutomirski 
Link: http://lkml.kernel.org/r/1416894816-23245-4-git-send-email-jiang.liu@linux.intel.com
Signed-off-by: Thomas Gleixner

kernel.h: remove ancient FUNCTION hack

2015-02-13T02:54:13+00:00

__FUNCTION__ hasn't been treated as a string literal since gcc 3.4, so
this only helps people who only test-compile using 3.3 (compiler-gcc3.h
barks at anything older than that).  Besides, there are almost no
occurrences of __FUNCTION__ left in the tree.

[akpm@linux-foundation.org: convert remaining __FUNCTION__ references]
Signed-off-by: Rasmus Villemoes 
Cc: Michal Nazarewicz 
Cc: Joe Perches 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

Merge branch 'x86/vdso' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip into next

2014-06-05T15:05:29+00:00

Pull x86 cdso updates from Peter Anvin:
 "Vdso cleanups and improvements largely from Andy Lutomirski.  This
  makes the vdso a lot less ''special''"

* 'x86/vdso' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/vdso, build: Make LE access macros clearer, host-safe
  x86/vdso, build: Fix cross-compilation from big-endian architectures
  x86/vdso, build: When vdso2c fails, unlink the output
  x86, vdso: Fix an OOPS accessing the HPET mapping w/o an HPET
  x86, mm: Replace arch_vma_name with vm_ops->name for vsyscalls
  x86, mm: Improve _install_special_mapping and fix x86 vdso naming
  mm, fs: Add vm_ops->name as an alternative to arch_vma_name
  x86, vdso: Fix an OOPS accessing the HPET mapping w/o an HPET
  x86, vdso: Remove vestiges of VDSO_PRELINK and some outdated comments
  x86, vdso: Move the vvar and hpet mappings next to the 64-bit vDSO
  x86, vdso: Move the 32-bit vdso special pages after the text
  x86, vdso: Reimplement vdso.so preparation in build-time C
  x86, vdso: Move syscall and sysenter setup into kernel/cpu/common.c
  x86, vdso: Clean up 32-bit vs 64-bit vdso params
  x86, mm: Ensure correct alignment of the fixmap

Merge remote-tracking branch 'origin/x86/espfix' into x86/vdso

2014-05-22T00:36:33+00:00

Merge x86/espfix into x86/vdso, due to changes in the vdso setup code
that otherwise cause conflicts.

Signed-off-by: H. Peter Anvin

x86: hpet: Use irq_alloc/free_hwirq()

2014-05-16T12:05:18+00:00

Use the new interfaces. No functional change.

This does not replace the requirement to move x86 to irq domains, but
it limits the mess to some degree.

Signed-off-by: Thomas Gleixner 
Reviewed-by: Grant Likely 
Cc: Tony Luck 
Cc: Peter Zijlstra 
Cc: x86@kernel.org
Link: http://lkml.kernel.org/r/20140507154334.991589924@linutronix.de
Signed-off-by: Thomas Gleixner

x86/hpet: Make boot_hpet_disable extern

2014-05-08T06:15:34+00:00

HPET on some platform has accuracy problem. Making
"boot_hpet_disable" extern so that we can runtime disable
the HPET timer by using quirk to check the platform.

Signed-off-by: Feng Tang 
Cc: Clemens Ladisch 
Cc: John Stultz 
Cc: Linus Torvalds 
Link: http://lkml.kernel.org/r/1398327498-13163-1-git-send-email-feng.tang@intel.com
Signed-off-by: Ingo Molnar