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2011-04-11ARM: 6867/1: Introduce THREAD_NOTIFY_COPY for copy_thread() hooksCatalin Marinas3-7/+18
This patch adds THREAD_NOTIFY_COPY for calling registered handlers during the copy_thread() function call. It also changes the VFP handler to use a switch statement rather than if..else and ignore this event. Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-04-11ARM: 6866/1: Do not restrict HIGHPTE to !OUTER_CACHECatalin Marinas1-1/+0
The HIGHPTE config option depends on !OUTER_CACHE. However, there is no set_pte_ext() function that does outer cache maintenance by physical address, hence no need for such restriction. Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-04-11ARM: 6865/1: perf: ensure pass through zero is counted on overflowWill Deacon1-1/+1
Commit a737823d ("ARM: perf: ensure overflows aren't missed due to IRQ latency") changed the way that event deltas are calculated on overflow so that we don't miss events when the new count value overtakes the previous one. Unfortunately, we forget to count the event that passes through zero so we end up being off by 1. This patch adds on the correction. Reported-by: Chris Moore <moore@free.fr> Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-04-11ARM: 6864/1: hw_breakpoint: clear DBGVCR out of resetWill Deacon1-0/+7
The DBGVCR, used for configuring vector catch debug events, is UNKNOWN out of reset on ARMv7. When enabling monitor mode, this must be zeroed to avoid UNPREDICTABLE behaviour. This patch adds the zeroing code to the debug reset path. Cc: stable <stable@kernel.org> Reported-by: Stepan Moskovchenko <stepanm@codeaurora.org> Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-04-02ARM: Only allow PM_SLEEP with CPUs which support suspendRussell King1-0/+2
Offering CONFIG_PM_SLEEP for CPUs which do not support suspend leads to build errors, so only set CONFIG_ARCH_SUSPEND_POSSIBLE if we have a CPU selected which supports suspend. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-04-02ARM: Make consolidated PM sleep code depend on PM_SLEEPRussell King8-8/+8
CONFIG_PM is now set whenever we support either runtime PM in addition to suspend and hibernate. This causes build errors when runtime PM is enabled on a platform, but the CPU does not have the appropriate support for suspend. So, switch this code to use CONFIG_PM_SLEEP rather than CONFIG_PM to allow runtime PM to be enabled without causing build errors. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-04-02Merge branch 'release' of ↵Linus Torvalds1-1/+1
git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6 * 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6: [IA64] fix build warning: argument 1 of 'irqd_irq_disabled'
2011-04-01[IA64] fix build warning: argument 1 of 'irqd_irq_disabled'Tony Luck1-1/+1
In commit f5e5bf088bd3d30990efb7429aaf9f1e5134ffd6 ia64: Use irqd_irq_disabled() instead of desc->status access Thomas forgot to convert from irq to *irq_data. Add a call to irq_get_irq_data() to fix that. Signed-off-by: Tony Luck <tony.luck@intel.com>
2011-04-01Merge branch 'merge' of ↵Linus Torvalds12-191/+238
git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc * 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: kdump: Allow shrinking of kdump region to be overridden powerpc/pmac/smp: Remove no-longer needed preempt workaround powerpc/smp: Increase vdso_data->processorCount, not just decrease it powerpc/smp: Create idle threads on demand and properly reset them powerpc/smp: Don't expose per-cpu "cpu_state" array powerpc/pmac/smp: Fix CPU hotplug crashes on some machines powerpc/smp: Add a smp_ops->bringup_up() done callback powerpc/pmac: Rename cpu_state in therm_pm72 to avoid collision powerpc/pmac/smp: Properly NAP offlined CPU on G5 powerpc/pmac/smp: Remove HMT changes for PowerMac offline code powerpc/pmac/smp: Consolidate 32-bit and 64-bit PowerMac cpu_die in one file powerpc/pmac/smp: Fixup smp_core99_cpu_disable() and use it on 64-bit powerpc/pmac/smp: Rename fixup_irqs() to migrate_irqs() and use it on ppc32 powerpc/pmac/smp: Fix 32-bit PowerMac cpu_die powerpc/smp: Remove unused smp_ops->cpu_enable() powerpc/smp: Remove unused generic_cpu_enable() powerpc/smp: Fix generic_mach_cpu_die() powerpc/smp: soft-replugged CPUs must go back to start_secondary powerpc: Make decrementer interrupt robust against offlined CPUs
2011-04-01Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6Linus Torvalds15-17/+20
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6: sparc32: Pass task_struct to schedule_tail() in ret_from_fork apbuart: Depend upon sparc. sparc64: Fix section mis-match errors. sparc32,leon: Fixed APBUART frequency detection sparc32, leon: APBUART driver must use archdata to get IRQ number sparc: Hook up syncfs system call.
2011-04-01powerpc/pmac/smp: Remove no-longer needed preempt workaroundBenjamin Herrenschmidt1-7/+0
The generic code properly re-initializes the preempt count in the idle thread now Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2011-04-01powerpc/smp: Increase vdso_data->processorCount, not just decrease itBenjamin Herrenschmidt1-0/+4
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2011-04-01powerpc/smp: Create idle threads on demand and properly reset themBenjamin Herrenschmidt1-22/+78
Instead of creating idle threads at boot for all possible CPUs, we create them on demand, like x86 or ARM, and we properly call init_idle to re-initialize an idle thread when a CPU was unplugged and is now re-plugged. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2011-04-01powerpc/smp: Don't expose per-cpu "cpu_state" arrayBenjamin Herrenschmidt3-6/+15
Instead, keep it static, expose an accessor and use that from the PowerMac code. Avoids easy namespace collisions and will make it easier to consolidate with other implementations. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2011-04-01powerpc/pmac/smp: Fix CPU hotplug crashes on some machinesBenjamin Herrenschmidt1-16/+55
On some machines that use i2c to synchronize the timebases (such as PowerMac7,2/7,3 G5 machines), hotplug CPU would crash when putting back a new CPU online due to the underlying i2c bus being closed. This uses the newly added bringup_done() callback to move the close along with other housekeeping calls, and adds a CPU notifier to re-open the i2c bus around subsequent hotplug operations Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2011-04-01powerpc/smp: Add a smp_ops->bringup_up() done callbackBenjamin Herrenschmidt2-0/+5
This allows us to stop abusing smp_ops->setup_cpu() for cleanup tasks that have to take place after the initial boot time CPU bringup. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2011-04-01powerpc/pmac/smp: Properly NAP offlined CPU on G5Benjamin Herrenschmidt4-28/+15
The current code soft-disables, and then goes to NAP mode which turns interrupts on. That means that if an interrupt occurs, we will hit the masked interrupt code path which isn't what we want, as it will return with EE off, which will either get us out of NAP mode, or fail to enter it (according to spec). Instead, let's just rely on the fact that it is safe to take decrementer interrupts on an offline CPU and leave interrupts enabled. We can also get rid of the special case in asm for power4_cpu_offline_powersave() and just use power4_idle(). Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2011-04-01powerpc/pmac/smp: Remove HMT changes for PowerMac offline codeBenjamin Herrenschmidt1-4/+0
Those instructions do nothing on non-threaded processors such as 970's used on those machines. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2011-04-01powerpc/pmac/smp: Consolidate 32-bit and 64-bit PowerMac cpu_die in one fileBenjamin Herrenschmidt3-60/+55
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2011-04-01powerpc/pmac/smp: Fixup smp_core99_cpu_disable() and use it on 64-bitBenjamin Herrenschmidt1-12/+5
Use the generic code, just add the MPIC priority setting, I don't see any use in mucking around with the decrementer, as 32-bit will have EE off all along, and 64-bit will be able to deal with it. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2011-04-01powerpc/pmac/smp: Rename fixup_irqs() to migrate_irqs() and use it on ppc32Benjamin Herrenschmidt3-3/+4
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2011-04-01powerpc/pmac/smp: Fix 32-bit PowerMac cpu_dieBenjamin Herrenschmidt2-20/+6
Use generic cpu_state, call idle_task_exit() properly, and remove smp_core99_cpu_die() which isn't useful, the generic function does the job just fine.
2011-04-01powerpc/smp: Remove unused smp_ops->cpu_enable()Benjamin Herrenschmidt3-13/+0
Remove the last remnants of cpu_enable(), everybody uses the normal __cpu_up() path now Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2011-04-01powerpc/smp: Remove unused generic_cpu_enable()Benjamin Herrenschmidt2-23/+0
Nobody uses it, besides we should always use the normal __cpu_up path anyways Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2011-04-01powerpc/smp: Fix generic_mach_cpu_die()Benjamin Herrenschmidt1-2/+1
This is used by some "soft" hotplug implementations. I needs to call idle_task_exit() when the CPU is going away, and we remove the now no-longer needed set_cpu_online() and local_irq_enable() which are handled by the return to start_secondary Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2011-04-01powerpc/smp: soft-replugged CPUs must go back to start_secondaryBenjamin Herrenschmidt4-4/+17
Various thing are torn down when a CPU is hot-unplugged. That CPU is expected to go back to start_secondary when re-plugged to re initialize everything, such as clock sources, maps, ... Some implementations just return from cpu_die() callback in the idle loop when the CPU is "re-plugged". This is not enough. We fix it using a little asm trampoline which resets the stack and calls back into start_secondary as if we were all fresh from boot. The trampoline already existed on ppc64, but we add it for ppc32 Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2011-04-01powerpc: Make decrementer interrupt robust against offlined CPUsBenjamin Herrenschmidt1-4/+11
With some implementations, it is possible that a timer interrupt occurs every few seconds on an offline CPU. In this case, just re-arm the decrementer and return immediately Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2011-03-31sparc32: Pass task_struct to schedule_tail() in ret_from_forkTkhai Kirill1-1/+1
We have to pass task_struct of previous process to function schedule_tail(). Currently in ret_from_fork previous thread_info is passed: switch_to: mov %g6, %g3 /* previous thread_info in g6 */ ret_from_fork: call schedule_tail mov %g3, %o0 /* previous thread_info is passed */ void schedule_tail(struct task_struct *prev); Signed-off-by: Tkhai Kirill <tkhai@yandex.ru> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-03-31sparc64: Fix section mis-match errors.David S. Miller11-14/+14
Fix all of the problems spotted by CONFIG_DEBUG_SECTION_MISMATCH under arch/sparc during a 64-bit defconfig build. They fall into two categorites: 1) of_device_id is marked as __initdata, and we can never do this since these objects sit in the device core data structures way past boot. So even if a driver will never be reloaded, we have to keep the device ID table around. Mark such cases const instead. 2) The bootmem alloc/free handling code in mdesc.c was not fully marked __init as it should be, thus generating a reference to free_bootmem_late() (which is __init) from non-__init code. Signed-off-by: David S. Miller <davem@davemloft.net>
2011-03-30Merge branch 'release' of ↵Linus Torvalds1-42/+0
git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6 * 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6: [IA64] Fix build breakage - sn_force_interrupt_flag: undefined
2011-03-30Merge branch 'irq-fixes-for-linus' of ↵Linus Torvalds23-27/+8
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'irq-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: avr32: Fix missing irq namespace conversion powerpc: qe_ic: Rename get_irq_desc_data and get_irq_desc_chip genirq: Remove the now obsolete config options and select statements arm: versatile : Fix typo introduced in irq namespace cleanup sound: Fixup the last user of the old irq functions genirq: Remove obsolete comment genirq: Remove now obsolete set_irq_wake() sh: Fix irq cleanup fallout x86: apb_timer: Fixup genirq fallout genirq: Fix misnamed label in handle_edge_eoi_irq Fix up crazy conflict in arch/powerpc/include/asm/qe_ic.h: - commit eead4d5c63ff ("powerpc: qe_ic: Rename get_irq_desc_data and get_irq_desc_chip") made the helper functions use irq_desc_get_handler_data() instead of the legacy (and no longer existing) get_irq_desc_data. - commit d4db35e8dc96 ("powerpc/qe_ic: Fix another breakage from the irq_data conversion") used irq_desc_get_chip_data() instead. According to Thomas, the former is the correct direct conversion, but it does look like both should work (arch/powerpc/sysdev/qe_lib/qe_ic.c seems to initialize both to the same thing), and the chip data in some ways is the more logical. Somebody should really decide on one of the other. This merge picks irq_desc_get_handler_data() as the straightforward pure conversion to new names, as per Thomas.
2011-03-30Merge branch 'merge' of ↵Linus Torvalds31-65/+160
git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc * 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: powerpc/qe_ic: Fix another breakage from the irq_data conversion powerpc/8xx: Fix another breakage from the irq_data conversion powerpc/cell: Use handle_edge_eoi_irq for real powerpc/pseries: Enable Chelsio network and iWARP drivers powerpc/mm: Move the STAB0 location to 0x8000 to make room in low memory powerpc: Fix accounting of softirq time when idle powerpc/pseries/smp: query-cpu-stopped-state support won't change powerpc/xics: Use hwirq for xics domain irq number powerpc/xics: Fix numberspace mismatch from irq_desc conversion powerpc: Wire up new syscalls powerpc/booke: Correct the SPRN_MAS5 definition. powerpc: ARCH_PFN_OFFSET should be unsigned long powerpc: Implement dma_mmap_coherent() powerpc/nvram: Don't overwrite oops/panic report on normal shutdown powerpc: Restore some misc devices to our configs
2011-03-30Merge branch 'for-linus' of ↵Linus Torvalds12-35/+24
git://git.kernel.org/pub/scm/linux/kernel/git/vapier/blackfin * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/vapier/blackfin: Blackfin: bitops: fix include order after little endian inclusion Blackfin: defconfigs: update after misc devices defaulted to N Blackfin: use more standard pr_fmt in the module loader
2011-03-30Merge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-armLinus Torvalds92-248/+962
* 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm: (65 commits) ARM: 6826/1: Merge v6 and v7 DEBUG_LL DCC support ARM: 6838/1: etm: fix section mismatch warning ARM: 6837/1: remove unused pci_fixup_prpmc1100 ARM: 6836/1: kprobes/fix emulation of LDR/STR instruction when Rn == PC Fix the broken build for Marvell Dove platform. ARM: 6835/1: perf: ensure overflows aren't missed due to IRQ latency ARM: 6834/1: perf: reset counters on all CPUs during initialisation ARM: 6833/1: perf: add required isbs() to ARMv7 backend ARM: 6825/1: kernel/sleep.S: fix Thumb2 compilation issues ARM: 6807/1: realview: Fix secondary GIC initialisation for EB with MPCore tile arm: mach-mx3: pcm043: add write-protect and card-detect for SD1 eukrea_mbimxsd51: add SD Card detect eukrea_mbimxsd25-baseboard: add SD card detect mx3/eukrea_mbimxsd-baseboard: add SD card detect support mx3/eukrea_mbimxsd-baseboard: fix gpio request ARM: mxs/mx28evk: add mmc device ARM: mxs/mx23evk: add mmc device ARM: mxs: dynamically allocate mmc device ARM: mx51_efika: update platform data for new mfd changes mx2/iomux: Set direction for CSPI2 pins ...
2011-03-30avr32: Fix missing irq namespace conversionThomas Gleixner1-1/+1
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2011-03-30powerpc: qe_ic: Rename get_irq_desc_data and get_irq_desc_chipRichard Cochran1-8/+8
These two functions disappeared in commit 0c6f8a8b917ad361319c8ace3e9f28e69bfdb4c1 "genirq: Remove compat code" but they still exist in qe_ic.h. This patch renames the function to their new names. Signed-off-by: Richard Cochran <richard.cochran@omicron.at> Cc: linuxppc-dev@lists.ozlabs.org Cc: Lennert Buytenhek <buytenh@secretlab.ca> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> LKML-Reference: <20110330132504.GA31832@riccoc20.at.omicron.at> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2011-03-30genirq: Remove the now obsolete config options and select statementsThomas Gleixner19-19/+0
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2011-03-30arm: versatile : Fix typo introduced in irq namespace cleanupGrant Likely1-1/+1
Commit 6845664(arm: Cleanup the irq namespace) introduces a typo causing a build failure for the versatile platform. [ tglx: Sorry, my bad. Have no idea how I fatfingered that ] Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Russell King <linux@arm.linux.org.uk> Cc: linux-arm-kernel@lists.infradead.org LKML-Reference: <20110330060229.27397.7628.stgit@ponder> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2011-03-30sparc: Hook up syncfs system call.David S. Miller3-2/+5
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-03-30[IA64] Fix build breakage - sn_force_interrupt_flag: undefinedTony Luck1-42/+0
Latest irq changes removed the need for this forcing flag, and the definition - but missed the code that allowed it to be tweaked via /proc. Delete accessor functions too. Signed-off-by: Tony Luck <tony.luck@intel.com>
2011-03-30powerpc/qe_ic: Fix another breakage from the irq_data conversionBenjamin Herrenschmidt1-8/+8
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2011-03-30powerpc/8xx: Fix another breakage from the irq_data conversionBenjamin Herrenschmidt1-1/+1
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2011-03-30powerpc/cell: fixup for removal of handle_iic_irqStephen Rothwell1-1/+1
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-30powerpc/cell: Use handle_edge_eoi_irq for realThomas Gleixner1-1/+1
Missed one instance when moving that to the core code. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: linuxppc-dev@lists.ozlabs.org Cc: michael@ellerman.id.au Cc: mingo@elte.hu Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2011-03-30powerpc/pseries: Enable Chelsio network and iWARP driversAnton Blanchard1-0/+3
Ensure the Chelsio T3/T4 network drivers and iWARP drivers are enabled in the pseries config. Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2011-03-30powerpc/mm: Move the STAB0 location to 0x8000 to make room in low memoryBenjamin Herrenschmidt2-15/+15
Recent upstream builds with allmodconfig fail due to lack of space between 0x3000 and 0x6000. We have a hard block at 0x7000 but we can spare a page by moving the STAB0 from 0x6000 to 0x8000. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2011-03-30powerpc: Fix accounting of softirq time when idleAnton Blanchard1-1/+1
commit cf9efce0ce31 (powerpc: Account time using timebase rather than PURR) used in_irq() to detect if the time was spent in interrupt processing. This only catches hardirq context so if we are in softirq context and in the idle loop we end up accounting it as idle time. If we instead use in_interrupt() we catch both softirq and hardirq time. The issue was found when running a network intensive workload. top showed the following: 0.0%us, 1.1%sy, 0.0%ni, 85.7%id, 0.0%wa, 9.9%hi, 3.3%si, 0.0%st 85.7% idle. But this was wildly different to the perf events data. To confirm the suspicion I ran something to keep the core busy: # yes > /dev/null & 8.2%us, 0.0%sy, 0.0%ni, 0.0%id, 0.0%wa, 10.3%hi, 81.4%si, 0.0%st We only got 8.2% of the CPU for the userspace task and softirq has shot up to 81.4%. With the patch below top shows the correct stats: 0.0%us, 0.0%sy, 0.0%ni, 5.3%id, 0.0%wa, 13.3%hi, 81.3%si, 0.0%st Signed-off-by: Anton Blanchard <anton@samba.org> Cc: stable@kernel.org Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2011-03-30powerpc/pseries/smp: query-cpu-stopped-state support won't changeMilton Miller1-2/+2
If a given firmware doesn't have a token to support query-cpu-stopped-state, its not likely to change during the lifetime of the kernel. Only print this information once, not once per secondary thread. While here, make the line wrap grep friendly. Signed-off-by: Milton Miller <miltonm@bga.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2011-03-30powerpc/xics: Use hwirq for xics domain irq numberMilton Miller1-28/+29
To try to avoid future confusion, rename irq to hwirq when it refers to a xics domain number instead of a linux irq number. Signed-off-by: Milton Miller <miltonm@bga.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2011-03-30powerpc/xics: Fix numberspace mismatch from irq_desc conversionMilton Miller1-8/+8
commit 79f26c268ebad29bd75d078cfc09d3d82b30ccbd (powerpc: platforms/pseries irq_data conversion) pushed irq_desc down into many functions, dererencing the descriptor irq field as late as possible. But it incorrectly passed a linix virtural irq number to RTAS, resulting in the interrupt not being disabled and possibly other bad things, such as another interrupt being disabled and/or a checkstop. In addition this missed the point of xics_mask_unknown_vec and the seperation of xics_mask_real_irq from xics_mask_irq. When xics_mask_unknown_vec is called it's because the hardware delivered an irq source for which we have no linux irq allocated, and thefore we can not have an irq_desc allocated. Revert xics_mask_real_irq to its prior version, naming the argument hwirq to highlight the difference. Signed-off-by: Milton Miller <miltonm@bga.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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