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* VM: add "vm_mmap()" helper functionLinus Torvalds2012-04-213-15/+5
| | | | | | | | | | | | | | | | | This continues the theme started with vm_brk() and vm_munmap(): vm_mmap() does the same thing as do_mmap(), but additionally does the required VM locking. This uninlines (and rewrites it to be clearer) do_mmap(), which sadly duplicates it in mm/mmap.c and mm/nommu.c. But that way we don't have to export our internal do_mmap_pgoff() function. Some day we hopefully don't have to export do_mmap() either, if all modular users can become the simpler vm_mmap() instead. We're actually very close to that already, with the notable exception of the (broken) use in i810, and a couple of stragglers in binfmt_elf. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* VM: add "vm_munmap()" helper functionLinus Torvalds2012-04-213-17/+5
| | | | | | | Like the vm_brk() function, this is the same as "do_munmap()", except it does the VM locking for the caller. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* VM: add "vm_brk()" helper functionLinus Torvalds2012-04-211-15/+5
| | | | | | | | | | It does the same thing as "do_brk()", except it handles the VM locking too. It turns out that all external callers want that anyway, so we can make do_brk() static to just mm/mmap.c while at it. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge branch 'for-linus' of ↵Linus Torvalds2012-04-206-18/+4
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu Pull m68k arch fixes from Greg Ungerer: "This contains four fixes for 3.4. Two fix and clean up compilation for the nommu 68x328 CPU targets. The other two fix the platform definition and multi-function pin setup of the second eth interface on the ColdFire 5275 SoC." * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu: m68knommu: make sure 2nd FEC eth interface pins are enabled on 5275 ColdFire m68knommu: fix id number for second eth device on 5275 ColdFire m68knommu: move and fix the 68VZ328 platform bootlogo.h m68knommu: remove the unused bootlogo.h processing for 68EZ328 and 68VZ328
| * m68knommu: make sure 2nd FEC eth interface pins are enabled on 5275 ColdFireGreg Ungerer2012-04-172-3/+0
| | | | | | | | | | | | | | | | | | | | The CONFIG_FEC2 define was removed from the kernel many versions ago. But it is still being used to set the multi-function pins when compiling for a ColdFire 527[45] SoC that has 2 ethernet interfaces. Remove the last remaining uses of this define, and so fix the setting of the pins for the 2nd ethernet interface. Signed-off-by: Greg Ungerer <gerg@uclinux.org>
| * m68knommu: fix id number for second eth device on 5275 ColdFireGreg Ungerer2012-04-171-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The second ColdFire FEC ethernet device should have an id number of 1, not 0. Otherwise it clashes with the first FEC ethernet device. On booting a kernel on a 5275 based board you will get messages out of the kernel like this: <4>------------[ cut here ]------------ <4>WARNING: at fs/sysfs/dir.c:508 0x0a8b50() <4>sysfs: cannot create duplicate filename 'fec.0' And likely you won't be able to completely boot up after this at all. Signed-off-by: Greg Ungerer <gerg@uclinux.org>
| * m68knommu: move and fix the 68VZ328 platform bootlogo.hGreg Ungerer2012-04-161-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | The 68EZ328/bootlogo.h is not actually used in the 68EZ328 platform code at all. It is used by the 68VZ328 platform code though, so move it to be with the rest of the 68VZ328 platform code. Commit c0e0c89c089f4bd66dbbd1a44da90abe74fe3f02 ("fix broken boot logo inclusion") modified the bootlogo code to not be included in asm code. Modify 68VZ328/bootlogo.h so that the bootlogo bit map is named correctly for direct use in the C code. Signed-off-by: Greg Ungerer <gerg@uclinux.org>
| * m68knommu: remove the unused bootlogo.h processing for 68EZ328 and 68VZ328Greg Ungerer2012-04-162-13/+2
| | | | | | | | | | | | | | | | | | The 68EZ328 and 68VZ328 platforms currently try to process their bootlogo.h to make it clean to include in asm files. This is no longer used, the bootlogo.h file is now included only in C code, so remove all the processing code in the 68EZ328 and 68VZ328 Makefiles. Signed-off-by: Greg Ungerer <gerg@uclinux.org>
* | Merge git://git.kernel.org/pub/scm/virt/kvm/kvmLinus Torvalds2012-04-192-10/+13
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull KVM updates from Marcelo Tosatti. * git://git.kernel.org/pub/scm/virt/kvm/kvm: KVM: lock slots_lock around device assignment KVM: VMX: Fix kvm_set_shared_msr() called in preemptible context KVM: unmap pages from the iommu when slots are removed KVM: PMU emulation: GLOBAL_CTRL MSR should be enabled on reset
| * | KVM: VMX: Fix kvm_set_shared_msr() called in preemptible contextAvi Kivity2012-04-191-1/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | kvm_set_shared_msr() may not be called in preemptible context, but vmx_set_msr() does so: BUG: using smp_processor_id() in preemptible [00000000] code: qemu-kvm/22713 caller is kvm_set_shared_msr+0x32/0xa0 [kvm] Pid: 22713, comm: qemu-kvm Not tainted 3.4.0-rc3+ #39 Call Trace: [<ffffffff8131fa82>] debug_smp_processor_id+0xe2/0x100 [<ffffffffa0328ae2>] kvm_set_shared_msr+0x32/0xa0 [kvm] [<ffffffffa03a103b>] vmx_set_msr+0x28b/0x2d0 [kvm_intel] ... Making kvm_set_shared_msr() work in preemptible is cleaner, but it's used in the fast path. Making two variants is overkill, so this patch just disables preemption around the call. Reported-by: Dave Jones <davej@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
| * | KVM: PMU emulation: GLOBAL_CTRL MSR should be enabled on resetGleb Natapov2012-04-101-9/+9
| | | | | | | | | | | | | | | | | | | | | On reset all MPU counters should be enabled in GLOBAL_CTRL MSR. Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* | | Merge branch 'for-linus' of ↵Linus Torvalds2012-04-1911-65/+108
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux Pull s390 updates from Martin Schwidefsky: "A couple of bug fixes, one of them is a TLB flush fix. Included as well is one small coding style patch and a patch to update the default configuration." * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: [S390] Fix compile error in swab.h [S390] Fix stfle() lowcore protection problem [S390] cpum_cf: get rid of compile warnings [S390] irq: simple coding style change [S390] update default configuration [S390] fix tlb flushing for page table pages [S390] kernel: Use local_irq_save() for memcpy_real() [S390] s390/char/vmur.c: fix memory leak [S390] drivers/s390/block/dasd_eckd.c: add missing dasd_sfree_request
| * | | [S390] Fix compile error in swab.hMartin Schwidefsky2012-04-111-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The inline assembly in__arch_swab16p causes compile errors of the form: *error*: *invalid* '*asm*': operand number missing after %-*letter* The assembly uses the %O<n>/%R<n> notation but the first operand misses the operand number, it needs to be "%O1" instead of "%O". Reported-by: Gil Peleg <gilpeleg@servframe.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * | | [S390] Fix stfle() lowcore protection problemMichael Holzheu2012-04-112-3/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The stfle() function writes into lowcore memory when stfl_fac_list is initialized with "S390_lowcore.stfl_fac_list = 0". For older compilers this triggers a lowcore exception. With newer compilers and "-OXX" compile option the bug does not show up because the "S390_lowcore.stfl_fac_list" initialization is removed by the compiler. The reason for thatis the incorrect "=m" (S390_lowcore.stfl_fac_list) constraint in the stfl inline assembly. The following shows the disassembly of the stfle() optimized code that is inlined in the lgr_info_get() function: 000000000011325c <lgr_info_get>: 11325c: eb 9f f0 60 00 24 stmg %r9,%r15,96(%r15) 113262: c0 d0 00 29 0e 47 larl %r13,634ef0 <servi..> 113268: a7 f1 3f c0 tml %r15,16320 11326c: b9 04 00 ef lgr %r14,%r15 113270: a7 84 00 01 je 113272 <lgr_info_g..> 113274: a7 fb ff c0 aghi %r15,-64 113278: b9 04 00 c2 lgr %r12,%r2 11327c: a7 29 00 01 lghi %r2,1 113280: e3 e0 f0 98 00 24 stg %r14,152(%r15) 113286: d7 97 c0 00 c0 00 xc 0(152,%r12),0(%r12) 11328c: c0 e5 00 28 db 4c brasl %r14,62e924 <add_e..> 113292: b2 b1 00 00 stfl 0 To fix the problem we now clear the S390_lowcore.stfl_fac_list at startup in "head.S" for all machine types before lowcore protection is enabled. In addition to that the "=m" constraint is replaced by "+m". Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * | | [S390] cpum_cf: get rid of compile warningsHeiko Carstens2012-04-111-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix these: arch/s390/kernel/perf_cpum_cf.c:180:3: warning: format '%lx' expects argument of type 'long unsigned int', but argument 2 has type 'int' [-Wformat] arch/s390/kernel/perf_cpum_cf.c: In function 'cpumf_pmu_disable': arch/s390/kernel/perf_cpum_cf.c:205:3: warning: format '%lx' expects argument of type 'long unsigned int', but argument 2 has type 'int' [-Wformat] Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * | | [S390] irq: simple coding style changeHeiko Carstens2012-04-111-3/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use braces for if/else/list_for_each_entry bodies if the body consists of more than a single line. Otherwise I get confused and check if there is something broken whenever I see these code snippets. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * | | [S390] update default configurationMichael Holzheu2012-04-111-19/+18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add TASKSTATS options, enable CRASH_DUMP, and regenerate defconfig file with "make savedefconfig". Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * | | [S390] fix tlb flushing for page table pagesMartin Schwidefsky2012-04-114-28/+61
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Git commit 36409f6353fc2d7b6516e631415f938eadd92ffa "use generic RCU page-table freeing code" introduced a tlb flushing bug. Partially revert the above git commit and go back to s390 specific page table flush code. For s390 the TLB can contain three types of entries, "normal" TLB page-table entries, TLB combined region-and-segment-table (CRST) entries and real-space entries. Linux does not use real-space entries which leaves normal TLB entries and CRST entries. The CRST entries are intermediate steps in the page-table translation called translation paths. For example a 4K page access in a three-level page table setup will create two CRST TLB entries and one page-table TLB entry. The advantage of that approach is that a page access next to the previous one can reuse the CRST entries and needs just a single read from memory to create the page-table TLB entry. The disadvantage is that the TLB flushing rules are more complicated, before any page-table may be freed the TLB needs to be flushed. In short: the generic RCU page-table freeing code is incorrect for the CRST entries, in particular the check for mm_users < 2 is troublesome. This is applicable to 3.0+ kernels. Cc: <stable@vger.kernel.org> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * | | [S390] kernel: Use local_irq_save() for memcpy_real()Michael Holzheu2012-04-111-9/+18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently in the memcpy_real() function interrupts are disabled with __arch_local_irq_stnsm(). In order to notify lockdep that interrupts are disabled, with this patch local_irq_save() is used instead. The function __arch_local_irq_stnsm() is still used for switching to real mode. Reviewed-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* | | | Merge branch 'perf-urgent-for-linus' of ↵Linus Torvalds2012-04-171-17/+36
|\ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull perf fixes from Ingo Molnar. * 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86: Handle failures of parsing immediate operands in the instruction decoder perf archive: Correct cutting of symbolic link perf tools: Ignore auto-generated bison/flex files perf tools: Fix parsers' rules to dependencies perf tools: fix NO_GTK2 Makefile config error perf session: Skip event correctly for unknown id/machine
| * | | | x86: Handle failures of parsing immediate operands in the instruction decoderMasami Hiramatsu2012-04-161-17/+36
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This can happen if the instruction is much longer than the maximum length, or if insn->opnd_bytes is manually changed. This patch also fixes warnings from -Wswitch-default flag. Reported-by: Prashanth Nageshappa <prashanth@linux.vnet.ibm.com> Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com> Cc: Jim Keniston <jkenisto@linux.vnet.ibm.com> Cc: Linux-mm <linux-mm@kvack.org> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: Christoph Hellwig <hch@infradead.org> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Arnaldo Carvalho de Melo <acme@infradead.org> Cc: Anton Arapov <anton@redhat.com> Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com> Cc: yrl.pp-manager.tt@hitachi.com Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20120413032427.32577.42602.stgit@localhost.localdomain Signed-off-by: Ingo Molnar <mingo@kernel.org>
* | | | | ia64: fix futex_atomic_cmpxchg_inatomic()Luck, Tony2012-04-171-4/+5
| |_|_|/ |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Michel Lespinasse cleaned up the futex calling conventions in commit 37a9d912b24f ("futex: Sanitize cmpxchg_futex_value_locked API"). But the ia64 implementation was subtly broken. Gcc does not know that register "r8" will be updated by the fault handler if the cmpxchg instruction takes an exception. So it feels safe in letting the initialization of r8 slide to after the cmpxchg. Result: we always return 0 whether the user address faulted or not. Fix by moving the initialization of r8 into the __asm__ code so gcc won't move it. Reported-by: <emeric.maschino@gmail.com> Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=42757 Tested-by: <emeric.maschino@gmail.com> Acked-by: Michel Lespinasse <walken@google.com> Cc: stable@vger.kernel.org # v2.6.39+ Signed-off-by: Tony Luck <tony.luck@intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | Merge branch 'fixes' of git://git.linaro.org/people/rmk/linux-armLinus Torvalds2012-04-1610-11/+44
|\ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull ARM fixes from Russell King: "Nothing too disasterous, the biggest thing being the removal of the regulator support for vcore in the AMBA driver; only one SoC was using this and it got broken during the last merge window, which then started causing problems for other people. Mutual agreement was reached for it to be removed." * 'fixes' of git://git.linaro.org/people/rmk/linux-arm: ARM: 7386/1: jump_label: fixup for rename to static_key ARM: 7384/1: ThumbEE: Disable userspace TEEHBR access for !CONFIG_ARM_THUMBEE ARM: 7382/1: mm: truncate memory banks to fit in 4GB space for classic MMU ARM: 7359/2: smp_twd: Only wait for reprogramming on active cpus ARM: 7383/1: nommu: populate vectors page from paging_init ARM: 7381/1: nommu: fix typo in mm/Kconfig ARM: 7380/1: DT: do not add a zero-sized memory property ARM: 7379/1: DT: fix atags_to_fdt() second call site ARM: 7366/3: amba: Remove AMBA level regulator support ARM: 7377/1: vic: re-read status register before dispatching each IRQ handler ARM: 7368/1: fault.c: correct how the tsk->[maj|min]_flt gets incremented
| * | | | ARM: 7386/1: jump_label: fixup for rename to static_keyRabin Vincent2012-04-151-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | c5905afb0 ("static keys: Introduce 'struct static_key'...") renamed struct jump_label_key to struct static_key. Fixup ARM for this to eliminate these build warnings: include/linux/jump_label.h:113:2: warning: passing argument 1 of 'arch_static_branch' from incompatible pointer type include/asm/jump_label.h:17:82: note: expected 'struct jump_label_key *' but argument is of type 'struct static_key *' Signed-off-by: Rabin Vincent <rabin@rab.in> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * | | | ARM: 7384/1: ThumbEE: Disable userspace TEEHBR access for !CONFIG_ARM_THUMBEEJonathan Austin2012-04-151-0/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently when ThumbEE is not enabled (!CONFIG_ARM_THUMBEE) the ThumbEE register states are not saved/restored at context switch. The default state of the ThumbEE Ctrl register (TEECR) allows userspace accesses to the ThumbEE Base Handler register (TEEHBR). This can cause unexpected behaviour when people use ThumbEE on !CONFIG_ARM_THUMBEE kernels, as well as allowing covert communication - eg between userspace tasks running inside chroot jails. This patch sets up TEECR in order to prevent user-space access to TEEHBR when !CONFIG_ARM_THUMBEE. In this case, tasks are sent SIGILL if they try to access TEEHBR. Cc: stable@vger.kernel.org Reviewed-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Jonathan Austin <jonathan.austin@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * | | | ARM: 7382/1: mm: truncate memory banks to fit in 4GB space for classic MMUWill Deacon2012-04-151-1/+15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If a bank of memory spanning the 4GB boundary is added on a !CONFIG_LPAE kernel then we will hang early during boot since the memory bank will have wrapped around to zero. This patch truncates memory banks for !LPAE configurations when the end address is not representable in 32 bits. Acked-by: Nicolas Pitre <nico@linaro.org> Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * | | | ARM: 7359/2: smp_twd: Only wait for reprogramming on active cpusLinus Walleij2012-04-151-1/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | During booting of cpu1, there is a short window where cpu1 is online, but not active where cpu1 is occupied by waiting to become active. If cpu0 then decides to schedule something on cpu1 and wait for it to complete, before cpu0 has set cpu1 active, we have a deadlock. Typically it's this CPU frequency transition that happens at this time, so let's just not wait for it to happen, it will happen whenever the CPU eventually comes online instead. Cc: Peter Zijlstra <peterz@infradead.org> Cc: stable@kernel.org Signed-off-by: Jonas Aaberg <jonas.aberg@stericsson.com> Reviewed-by: Rickard Andersson <rickard.andersson@stericsson.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * | | | ARM: 7383/1: nommu: populate vectors page from paging_initWill Deacon2012-04-131-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit 94e5a85b ("ARM: earlier initialization of vectors page") made it the responsibility of paging_init to initialise the vectors page. This patch adds a call to early_trap_init for the !CONFIG_MMU case, placing the vectors at CONFIG_VECTORS_BASE. Cc: Jonathan Austin <jonathan.austin@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * | | | ARM: 7381/1: nommu: fix typo in mm/KconfigWill Deacon2012-04-131-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The description for the CPU_HIGH_VECTOR Kconfig option for nommu builds doesn't make any sense. This patch fixes up the trivial grammatical error. Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * | | | ARM: 7380/1: DT: do not add a zero-sized memory propertyMarc Zyngier2012-04-131-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Some bootloaders are broken enough to expose an ATAG_MEM with a null size. Converting such tag to a memory node leads to an unbootable system. Skip over zero sized ATAG_MEM to avoid this situation. Acked-by: Nicolas Pitre <nicolas.pitre@linaro.org> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * | | | ARM: 7379/1: DT: fix atags_to_fdt() second call siteMarc Zyngier2012-04-131-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | atags_to_fdt() returns 1 when it fails to find a valid FDT signature. The CONFIG_ARM_ATAG_DTB_COMPAT code is supposed to retry with another location, but only does so when the initial call doesn't fail. Fix this by using the correct condition in the assembly code. Acked-by: Nicolas Pitre <nicolas.pitre@linaro.org> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Cc: stable@vger.kernel.org Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * | | | ARM: 7377/1: vic: re-read status register before dispatching each IRQ handlerWill Deacon2012-04-101-5/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | handle_IRQ may briefly cause interrupts to be re-enabled during soft IRQ processing on the exit path, leading to nested handling of VIC interrupts. Since the current code does not re-read the VIC_IRQ_STATUS register, this can lead to multiple invocations of the same interrupt handler and spurious interrupts to be reported. This patch changes the VIC interrupt dispatching code to re-read the status register each time, avoiding duplicate invocations of the same handler. Acked-and-Tested-by: H Hartley Sweeten <hsweeten@visionengravers.com> Reviewed-by: Jamie Iles <jamie@jamieiles.com> Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * | | | ARM: 7368/1: fault.c: correct how the tsk->[maj|min]_flt gets incrementedKautuk Consul2012-04-101-1/+1
| | |_|/ | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | commit 8878a539ff19a43cf3729e7562cd528f490246ae was done by me to make the page fault handler retryable as well as interruptible. Due to this commit, there is a mistake in the way in which tsk->[maj|min]_flt counter gets incremented for VM_FAULT_ERROR: If VM_FAULT_ERROR is returned in the fault flags by handle_mm_fault, then either maj_flt or min_flt will get incremented. This is wrong as in the case of a VM_FAULT_ERROR we need to be skip ahead to the error handling code in do_page_fault. Added a check after the call to __do_page_fault() to check for (fault & VM_FAULT_ERROR). Signed-off-by: Kautuk Consul <consul.kautuk@gmail.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* | | | x86-32: fix up strncpy_from_user() sign errorLinus Torvalds2012-04-161-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The 'max' range needs to be unsigned, since the size of the user address space is bigger than 2GB. We know that 'count' is positive in 'long' (that is checked in the caller), so we will truncate 'max' down to something that fits in a signed long, but before we actually do that, that comparison needs to be done in unsigned. Bug introduced in commit 92ae03f2ef99 ("x86: merge 32/64-bit versions of 'strncpy_from_user()' and speed it up"). On x86-64 you can't trigger this, since the user address space is much smaller than 63 bits, and on x86-32 it works in practice, since you would seldom hit the strncpy limits anyway. I had actually tested the corner-cases, I had only tested them on x86-64. Besides, I had only worried about the case of a pointer *close* to the end of the address space, rather than really far away from it ;) This also changes the "we hit the user-specified maximum" to return 'res', for the trivial reason that gcc seems to generate better code that way. 'res' and 'count' are the same in that case, so it really doesn't matter which one we return. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | Merge tag 'fixes-for-linus' of ↵Linus Torvalds2012-04-1525-189/+27
|\ \ \ \ | |_|/ / |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc Pull "ARM: a few more SoC fixes for 3.4-rc" from Olof Johansson: - A handful of warning and build fixes for Qualcomm MSM - Build/warning and bug fixes for Samsung Exynos - A fix from Rob Herring that removes misplaced interrupt-parent properties from a few device trees - A fix to OMAP dealing with cpufreq build errors, removing some of the offending code since it was redundant anyway * tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: ARM: OMAP: clock: cleanup CPUfreq leftovers, fix build errors ARM: dts: remove blank interrupt-parent properties ARM: EXYNOS: Fix Kconfig dependencies for device tree enabled machine files ARM: EXYNOS: Remove broken config values for touchscren for NURI board ARM: EXYNOS: set fix xusbxti clock for NURI and Universal210 boards ARM: EXYNOS: fix regulator name for NURI board ARM: SAMSUNG: make SAMSUNG_PM_DEBUG select DEBUG_LL ARM: msm: Fix section mismatches in proc_comm.c video: msm: Fix section mismatches in mddi.c arm: msm: trout: fix compile failure arm: msm: halibut: remove unneeded fixup ARM: EXYNOS: Add PDMA and MDMA physical base address defines ARM: S5PV210: Fix compiler warning in dma.c file ARM: EXYNOS: Fix compile error in exynos5250-cpufreq.c ARM: EXYNOS: Add missing definition for IRQ_I2S0 ARM: S5PV210: fix unused LDO supply field from wm8994_pdata
| * | | Merge branch 'v3.4-samsung-fixes-2' of ↵Olof Johansson2012-04-1511-51/+24
| |\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung into fixes * 'v3.4-samsung-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung: ARM: EXYNOS: Fix Kconfig dependencies for device tree enabled machine files ARM: EXYNOS: Remove broken config values for touchscren for NURI board ARM: EXYNOS: set fix xusbxti clock for NURI and Universal210 boards ARM: EXYNOS: fix regulator name for NURI board ARM: SAMSUNG: make SAMSUNG_PM_DEBUG select DEBUG_LL ARM: EXYNOS: Add PDMA and MDMA physical base address defines ARM: S5PV210: Fix compiler warning in dma.c file ARM: EXYNOS: Fix compile error in exynos5250-cpufreq.c ARM: EXYNOS: Add missing definition for IRQ_I2S0 ARM: S5PV210: fix unused LDO supply field from wm8994_pdata
| | * | | ARM: EXYNOS: Fix Kconfig dependencies for device tree enabled machine filesSachin Kamat2012-04-141-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add config dependency for Exynos4 and Exynos5 device tree enabled machine files on config options ARCH_EXYNOS4 and ARCH_EXYNOS5 respectively. Enabling machine support without proper ARCH support enabled is incorrect. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
| | * | | ARM: EXYNOS: Remove broken config values for touchscren for NURI boardMarek Szyprowski2012-04-141-42/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The atmel_mxt_ts driver has been extended to support more 'configuration objects' in commit 81c88a711 ("Input: atmel_mxt_ts - update object list"), what broke the configuration values for NURI board. These values are optional anyway, so remove them to get the driver working correctly. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
| | * | | ARM: EXYNOS: set fix xusbxti clock for NURI and Universal210 boardsMarek Szyprowski2012-04-142-1/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | On some versions of NURI and UniversalC210 boards, camera clocks are routed directly to xusbxti clock source. This patch sets the correct value for this clock to let usb and camera sensors to work correctly and avoid division by zero on driver's probe. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
| | * | | ARM: EXYNOS: fix regulator name for NURI boardMarek Szyprowski2012-04-141-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Regulator names should not contain slash to avoid issues with debugfs. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
| | * | | ARM: SAMSUNG: make SAMSUNG_PM_DEBUG select DEBUG_LLMaurus Cuelenaere2012-04-141-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When selecting SAMSUNG_PM_DEBUG, it complains about a missing printascii() function if you do not select DEBUG_LL, so make the former select the latter. Signed-off-by: Maurus Cuelenaere <mcuelenaere@gmail.com> Acked-by: Heiko Stuebner <heiko@sntech.de> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
| | * | | ARM: EXYNOS: Add PDMA and MDMA physical base address definesThomas Abraham2012-04-102-1/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add PDMA and MDMA physical base address macros which is require for EXYNOS5 of_dev_auxdata setup. Signed-off-by: Thomas Abraham <thomas.ab@samsung.com> [kgene.kim@samsung.com: changed dma channel fo mdma1] Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
| | * | | ARM: S5PV210: Fix compiler warning in dma.c fileSachin Kamat2012-04-101-2/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fixes the following warning: warning: 'dma_dmamask' defined but not used [-Wunused-variable] Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
| | * | | ARM: EXYNOS: Fix compile error in exynos5250-cpufreq.cJonghwan Choi2012-04-091-0/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch is omitted in v2 patch of Jaecheol Lee. drivers/cpufreq/exynos5250-cpufreq.c: In function 'set_clkdiv': drivers/cpufreq/exynos5250-cpufreq.c:144: error: 'EXYNOS5_CLKDIV_STATCPU0' undeclared (first use in this function) drivers/cpufreq/exynos5250-cpufreq.c:144: error: (Each undeclared identifier is reported only once drivers/cpufreq/exynos5250-cpufreq.c:144: error: for each function it appears in.) drivers/cpufreq/exynos5250-cpufreq.c:150: error: 'EXYNOS5_CLKDIV_CPU1' undeclared (first use in this function) drivers/cpufreq/exynos5250-cpufreq.c:152: error: 'EXYNOS5_CLKDIV_STATCPU1' undeclared (first use in this function) drivers/cpufreq/exynos5250-cpufreq.c: In function 'set_apll': drivers/cpufreq/exynos5250-cpufreq.c:166: error: 'EXYNOS5_CLKMUX_STATCPU' undeclared (first use in this function) drivers/cpufreq/exynos5250-cpufreq.c:173: error: 'EXYNOS5_APLL_LOCK' undeclared (first use in this function) drivers/cpufreq/exynos5250-cpufreq.c: In function 'exynos5250_cpufreq_init': drivers/cpufreq/exynos5250-cpufreq.c:312: error: 'EXYNOS5_CLKDIV_CPU1' undeclared (first use in this function) Cc: Jaecheol Lee <jc.lee@samsung.com> Signed-off-by: Jonghwan Choi <jhbird.choi@samsung.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
| | * | | ARM: EXYNOS: Add missing definition for IRQ_I2S0Tushar Behera2012-04-091-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This fixes following build error when sound support is selected on EXYNOS4 platform. sound/soc/samsung/idma.c: In function ‘idma_close’: sound/soc/samsung/idma.c:327:11: error: ‘IRQ_I2S0’ undeclared (first use in this function) Signed-off-by: Tushar Behera <tushar.behera@linaro.org> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
| | * | | ARM: S5PV210: fix unused LDO supply field from wm8994_pdataKukjin Kim2012-04-092-4/+4
| | |/ / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | According to commit 719a4240("mfd: Remove unused LDO supply field from WM8994 pdata"), the LDO supply field should be removed from the initializer. Cc: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
| * | | ARM: OMAP: clock: cleanup CPUfreq leftovers, fix build errorsKevin Hilman2012-04-155-129/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Now that we have OPP layer, and OMAP CPUfreq driver is using it, we no longer need/use the clock framework code for filling up CPUfreq tables. Remove it. Removing this code also eliminates build errors when CPU_FREQ_TABLE support is not enabled. Thanks to Russell King for pointing out the parts I missed under plat-omap in the original version and also pointing out the build errors when CPUFREQ_TABLE support was not enabled. Cc: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Kevin Hilman <khilman@ti.com> Acked-by: Paul Walmsley <paul@pwsan.com> Acked-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Olof Johansson <olof@lixom.net>
| * | | ARM: dts: remove blank interrupt-parent propertiesRob Herring2012-04-155-5/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | These were incorrectly introduced and can cause problems for of_irq_init. The correct way to define a root controller is no interrupt-parent set at all or the interrupt-parent is set to the root controller itself when inherited from a parent node. Signed-off-by: Rob Herring <rob.herring@calxeda.com> Tested-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Olof Johansson <olof@lixom.net>
| * | | ARM: msm: Fix section mismatches in proc_comm.cDavid Brown2012-04-131-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The change commit 4416e9eb0b4859b3d28016c5fd0a609bdcbc8a2a Author: Gregory Bean <gbean@codeaurora.org> Date: Wed Jul 28 10:22:12 2010 -0700 arm: msm: Fix section mismatch in smd.c. fixes a section mismatch between the board file and the smd driver's probe function, however, it misses the additional mismatches between the probe function and some routines it calls. Fix these up as well. Signed-off-by: David Brown <davidb@codeaurora.org>
| * | | arm: msm: trout: fix compile failureDaniel Walker2012-04-132-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fixes the following warnings, arch/arm/mach-msm/board-trout.c: In function 'trout_init': arch/arm/mach-msm/board-trout.c:71: error: 'system_rev' undeclared (first use in this function) arch/arm/mach-msm/board-trout.c:71: error: (Each undeclared identifier is reported only once arch/arm/mach-msm/board-trout.c:71: error: for each function it appears in.) and arch/arm/mach-msm/board-trout-panel.c: In function 'trout_init_panel': arch/arm/mach-msm/board-trout-panel.c:267: error: 'system_rev' undeclared (first use in this function) arch/arm/mach-msm/board-trout-panel.c:267: error: (Each undeclared identifier is reported only once arch/arm/mach-msm/board-trout-panel.c:267: error: for each function it appears in.) This came in with the following commit 9f97da78bf018206fb623cd351d454af2f105fe0 which removes asm/system.h Signed-off-by: Daniel Walker <dwalker@fifo99.com> cc: David Howells <dhowells@redhat.com> cc: Bryan Huntsman <bryanh@codeaurora.org> cc: linux-arm-msm@vger.kernel.org cc: linux-arm-kernel@lists.infradead.org Signed-off-by: David Brown <davidb@codeaurora.org>
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