linux-2.6
15 years agoVT-d: register functions for the IOMMU API
Joerg Roedel [Wed, 3 Dec 2008 14:14:02 +0000 (15:14 +0100)] 
VT-d: register functions for the IOMMU API

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
15 years agoVT-d: adapt domain iova_to_phys function for IOMMU API
Joerg Roedel [Wed, 3 Dec 2008 14:06:57 +0000 (15:06 +0100)] 
VT-d: adapt domain iova_to_phys function for IOMMU API

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
15 years agoVT-d: adapt domain map and unmap functions for IOMMU API
Joerg Roedel [Wed, 3 Dec 2008 14:04:09 +0000 (15:04 +0100)] 
VT-d: adapt domain map and unmap functions for IOMMU API

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
15 years agoVT-d: adapt device attach and detach functions for IOMMU API
Joerg Roedel [Wed, 3 Dec 2008 13:58:24 +0000 (14:58 +0100)] 
VT-d: adapt device attach and detach functions for IOMMU API

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
15 years agoVT-d: adapt domain init and destroy functions for IOMMU API
Joerg Roedel [Wed, 3 Dec 2008 13:52:32 +0000 (14:52 +0100)] 
VT-d: adapt domain init and destroy functions for IOMMU API

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
15 years agoKVM: change KVM to use IOMMU API
Joerg Roedel [Wed, 3 Dec 2008 13:43:34 +0000 (14:43 +0100)] 
KVM: change KVM to use IOMMU API

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
15 years agoselect IOMMU_API when DMAR and/or AMD_IOMMU is selected
Joerg Roedel [Wed, 26 Nov 2008 16:25:13 +0000 (17:25 +0100)] 
select IOMMU_API when DMAR and/or AMD_IOMMU is selected

These two IOMMUs can implement the current version of this API. So
select the API if one or both of these IOMMU drivers is selected.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
15 years agoadd frontend implementation for the IOMMU API
Joerg Roedel [Wed, 26 Nov 2008 16:21:24 +0000 (17:21 +0100)] 
add frontend implementation for the IOMMU API

This API can be used by KVM for accessing different types of IOMMUs to
do device passthrough to guests. Beside that this API can also be used
by device drivers to map non-linear host memory into dma-linear
addresses to prevent sgather-gather DMA. UIO may be another user for
this API.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
15 years agointrocude linux/iommu.h for an iommu api
Joerg Roedel [Wed, 26 Nov 2008 16:02:33 +0000 (17:02 +0100)] 
introcude linux/iommu.h for an iommu api

This patch introduces the API to abstract the exported VT-d functions
for KVM into a generic API. This way the AMD IOMMU implementation can
plug into this API later.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
15 years agoKVM: rename vtd.c to iommu.c
Joerg Roedel [Wed, 26 Nov 2008 14:51:19 +0000 (15:51 +0100)] 
KVM: rename vtd.c to iommu.c

Impact: file renamed

The code in the vtd.c file can be reused for other IOMMUs as well. So
rename it to make it clear that it handle more than VT-d.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
15 years agoDeassign device in kvm_free_assgined_device
Weidong Han [Mon, 8 Dec 2008 15:29:53 +0000 (23:29 +0800)] 
Deassign device in kvm_free_assgined_device

In kvm_iommu_unmap_memslots(), assigned_dev_head is already empty.

Signed-off-by: Weidong Han <weidong.han@intel.com>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
15 years agoKVM: support device deassignment
Weidong Han [Tue, 2 Dec 2008 13:24:23 +0000 (21:24 +0800)] 
KVM: support device deassignment

Support device deassignment, it can be used in device hotplug.

Signed-off-by: Weidong Han <weidong.han@intel.com>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
15 years agoKVM: use the new intel iommu APIs
Weidong Han [Tue, 2 Dec 2008 13:03:39 +0000 (21:03 +0800)] 
KVM: use the new intel iommu APIs

intel iommu APIs are updated, use the new APIs.

In addition, change kvm_iommu_map_guest() to just create the domain, let kvm_iommu_assign_device() assign device.

Signed-off-by: Weidong Han <weidong.han@intel.com>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
15 years agoCheck agaw is sufficient for mapped memory
Weidong Han [Mon, 8 Dec 2008 15:10:23 +0000 (23:10 +0800)] 
Check agaw is sufficient for mapped memory

When domain is related to multiple iommus, need to check if the minimum agaw is sufficient for the mapped memory

Signed-off-by: Weidong Han <weidong.han@intel.com>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
15 years agoChange intel iommu APIs of virtual machine domain
Weidong Han [Mon, 8 Dec 2008 15:09:29 +0000 (23:09 +0800)] 
Change intel iommu APIs of virtual machine domain

These APIs are used by KVM to use VT-d

Signed-off-by: Weidong Han <weidong.han@intel.com>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
15 years agoChange domain_context_mapping_one for virtual machine domain
Weidong Han [Mon, 8 Dec 2008 15:08:15 +0000 (23:08 +0800)] 
Change domain_context_mapping_one for virtual machine domain

vm_domid won't be set in context, find available domain id for a device from its iommu.

For a virtual machine domain, a default agaw will be set, and skip top levels of page tables for iommu which has less agaw than default.

Signed-off-by: Weidong Han <weidong.han@intel.com>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
15 years agoAllocation and free functions of virtual machine domain
Weidong Han [Mon, 8 Dec 2008 15:03:27 +0000 (23:03 +0800)] 
Allocation and free functions of virtual machine domain

virtual machine domain is different from native DMA-API domain, implement separate allocation and free functions for virtual machine domain.

Signed-off-by: Weidong Han <weidong.han@intel.com>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
15 years agoAdd domain_flush_cache
Weidong Han [Mon, 8 Dec 2008 15:00:00 +0000 (23:00 +0800)] 
Add domain_flush_cache

Because virtual machine domain may have multiple devices from different iommus, it cannot use __iommu_flush_cache.

In some common low level functions, use domain_flush_cache instead of __iommu_flush_cache. On the other hand, in some functions, iommu can is specified or domain cannot be got, still use __iommu_flush_cache

Signed-off-by: Weidong Han <weidong.han@intel.com>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
15 years agoAdd/remove domain device info for virtual machine domain
Weidong Han [Mon, 8 Dec 2008 14:51:37 +0000 (22:51 +0800)] 
Add/remove domain device info for virtual machine domain

Add iommu reference count in domain, and add a lock to protect iommu setting including iommu_bmp, iommu_count and iommu_coherency.

virtual machine domain may have multiple devices from different iommus, so it needs to do more things when add/remove domain device info. Thus implement separate these functions for virtual machine domain.

Signed-off-by: Weidong Han <weidong.han@intel.com>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
15 years agoAdd domain flag DOMAIN_FLAG_VIRTUAL_MACHINE
Weidong Han [Mon, 8 Dec 2008 08:35:39 +0000 (16:35 +0800)] 
Add domain flag DOMAIN_FLAG_VIRTUAL_MACHINE

Add this flag for VT-d used in virtual machine, like KVM.

Signed-off-by: Weidong Han <weidong.han@intel.com>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
15 years agoiommu coherency
Weidong Han [Mon, 8 Dec 2008 07:49:06 +0000 (15:49 +0800)] 
iommu coherency

In dmar_domain, more than one iommus may be included in iommu_bmp. Due to "Coherency" capability may be different across iommus, set this variable to indicate iommu access is coherent or not. Only when all related iommus in a dmar_domain are all coherent, iommu access of this domain is coherent.

Signed-off-by: Weidong Han <weidong.han@intel.com>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
15 years agocalculate agaw for each iommu
Weidong Han [Mon, 8 Dec 2008 07:34:06 +0000 (15:34 +0800)] 
calculate agaw for each iommu

"SAGAW" capability may be different across iommus. Use a default agaw, but if default agaw is not supported in some iommus, choose a less supported agaw.

Signed-off-by: Weidong Han <weidong.han@intel.com>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
15 years agoiommu bitmap instead of iommu pointer in dmar_domain
Weidong Han [Mon, 8 Dec 2008 07:29:22 +0000 (15:29 +0800)] 
iommu bitmap instead of iommu pointer in dmar_domain

In order to support assigning multiple devices from different iommus to a domain, iommu bitmap is used to keep all iommus the domain are related to.

Signed-off-by: Weidong Han <weidong.han@intel.com>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
15 years agoGet iommu from g_iommus for deferred flush
Weidong Han [Mon, 8 Dec 2008 03:24:12 +0000 (11:24 +0800)] 
Get iommu from g_iommus for deferred flush

deferred_flush[] uses the iommu seq_id to index, so its iommu is fixed and can get it from g_iommus.

Signed-off-by: Weidong Han <weidong.han@intel.com>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
15 years agoAdd global iommu list
Weidong Han [Mon, 8 Dec 2008 03:06:32 +0000 (11:06 +0800)] 
Add global iommu list

Signed-off-by: Weidong Han <weidong.han@intel.com>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
15 years agochange P2P domain flags
Weidong Han [Mon, 8 Dec 2008 01:17:15 +0000 (09:17 +0800)] 
change P2P domain flags

Signed-off-by: Weidong Han <weidong.han@intel.com>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
15 years agoInitialize domain flags to 0
Weidong Han [Sun, 7 Dec 2008 13:13:41 +0000 (21:13 +0800)] 
Initialize domain flags to 0

It's random number after the domain is allocated by kmem_cache_alloc

Signed-off-by: Weidong Han <weidong.han@intel.com>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
15 years agoVT-d: fix segment number being ignored when searching DRHD
Yu Zhao [Mon, 22 Dec 2008 08:54:58 +0000 (16:54 +0800)] 
VT-d: fix segment number being ignored when searching DRHD

On platforms with multiple PCI segments, any of the segments can have a DRHD
with INCLUDE_PCI_ALL flag. So need to check the DRHD's segment number against
the PCI device's when searching its DRHD.

Signed-off-by: Yu Zhao <yu.zhao@intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
15 years agointel-iommu: trivially inline DMA PTE macros
Mark McLoughlin [Fri, 21 Nov 2008 16:56:53 +0000 (16:56 +0000)] 
intel-iommu: trivially inline DMA PTE macros

Signed-off-by: Mark McLoughlin <markmc@redhat.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
15 years agointel-iommu: trivially inline context entry macros
Mark McLoughlin [Fri, 21 Nov 2008 16:54:46 +0000 (16:54 +0000)] 
intel-iommu: trivially inline context entry macros

Some macros were unused, so I just dropped them:

  context_fault_disable
  context_translation_type
  context_address_root
  context_address_width
  context_domain_id

Signed-off-by: Mark McLoughlin <markmc@redhat.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
15 years agointel-iommu: move iommu_prepare_gfx_mapping() out of dma_remapping.h
Mark McLoughlin [Thu, 20 Nov 2008 15:49:50 +0000 (15:49 +0000)] 
intel-iommu: move iommu_prepare_gfx_mapping() out of dma_remapping.h

Signed-off-by: Mark McLoughlin <markmc@redhat.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
15 years agointel-iommu: kill off duplicate def of dmar_disabled
Mark McLoughlin [Thu, 20 Nov 2008 15:49:49 +0000 (15:49 +0000)] 
intel-iommu: kill off duplicate def of dmar_disabled

This is only used in dmar.c and intel-iommu.h, so dma_remapping.h
seems like the appropriate place for it.

Signed-off-by: Mark McLoughlin <markmc@redhat.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
15 years agointel-iommu: move struct device_domain_info out of dma_remapping.h
Mark McLoughlin [Thu, 20 Nov 2008 15:49:48 +0000 (15:49 +0000)] 
intel-iommu: move struct device_domain_info out of dma_remapping.h

Signed-off-by: Mark McLoughlin <markmc@redhat.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
15 years agointel-iommu: move struct dmar_domain def out dma_remapping.h
Mark McLoughlin [Thu, 20 Nov 2008 15:49:47 +0000 (15:49 +0000)] 
intel-iommu: move struct dmar_domain def out dma_remapping.h

Signed-off-by: Mark McLoughlin <markmc@redhat.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
15 years agointel-iommu: move DMA PTE defs out of dma_remapping.h
Mark McLoughlin [Thu, 20 Nov 2008 15:49:46 +0000 (15:49 +0000)] 
intel-iommu: move DMA PTE defs out of dma_remapping.h

DMA_PTE_READ/WRITE are needed by kvm.

Signed-off-by: Mark McLoughlin <markmc@redhat.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
15 years agointel-iommu: move context entry defs out from dma_remapping.h
Mark McLoughlin [Thu, 20 Nov 2008 15:49:45 +0000 (15:49 +0000)] 
intel-iommu: move context entry defs out from dma_remapping.h

Signed-off-by: Mark McLoughlin <markmc@redhat.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
15 years agointel-iommu: move root entry defs from dma_remapping.h
Mark McLoughlin [Thu, 20 Nov 2008 15:49:44 +0000 (15:49 +0000)] 
intel-iommu: move root entry defs from dma_remapping.h

We keep the struct root_entry forward declaration for the
pointer in struct intel_iommu.

Signed-off-by: Mark McLoughlin <markmc@redhat.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
15 years agointel-iommu: move DMA_32/64BIT_PFN into intel-iommu.c
Mark McLoughlin [Thu, 20 Nov 2008 15:49:43 +0000 (15:49 +0000)] 
intel-iommu: move DMA_32/64BIT_PFN into intel-iommu.c

Signed-off-by: Mark McLoughlin <markmc@redhat.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
15 years agointel-iommu: make init_dmars() static
Mark McLoughlin [Thu, 20 Nov 2008 14:21:13 +0000 (14:21 +0000)] 
intel-iommu: make init_dmars() static

init_dmars() is not used outside of drivers/pci/intel-iommu.c

Signed-off-by: Mark McLoughlin <markmc@redhat.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
15 years agointel-iommu: remove some unused struct intel_iommu fields
Mark McLoughlin [Thu, 20 Nov 2008 14:04:20 +0000 (14:04 +0000)] 
intel-iommu: remove some unused struct intel_iommu fields

The seg, saved_msg and sysdev fields appear to be unused since
before the code was first merged.

linux/msi.h is not needed in linux/intel-iommu.h anymore since
there is no longer a reference to struct msi_msg. The MSI code
in drivers/pci/intel-iommu.c still has linux/msi.h included
via linux/dmar.h.

linux/sysdev.h isn't needed because there is no reference to
struct sys_device.

Signed-off-by: Mark McLoughlin <markmc@redhat.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
15 years agoDisallow gcc versions 3.{0,1}
Ingo Molnar [Fri, 2 Jan 2009 17:53:14 +0000 (18:53 +0100)] 
Disallow gcc versions 3.{0,1}

GCC 3.0 and 3.1 are too old to build a working kernel.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
[ This check got dropped as obsolete when I simplified the gcc header
  inclusion mess in f153b82121b0366fe0e5f9553545cce237335175, but Willy
  Tarreau reports actually having those old versions still..  -Linus ]
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agoMerge branch 'cpus4096-for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Fri, 2 Jan 2009 19:44:09 +0000 (11:44 -0800)] 
Merge branch 'cpus4096-for-linus-2' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'cpus4096-for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (66 commits)
  x86: export vector_used_by_percpu_irq
  x86: use logical apicid in x2apic_cluster's x2apic_cpu_mask_to_apicid_and()
  sched: nominate preferred wakeup cpu, fix
  x86: fix lguest used_vectors breakage, -v2
  x86: fix warning in arch/x86/kernel/io_apic.c
  sched: fix warning in kernel/sched.c
  sched: move test_sd_parent() to an SMP section of sched.h
  sched: add SD_BALANCE_NEWIDLE at MC and CPU level for sched_mc>0
  sched: activate active load balancing in new idle cpus
  sched: bias task wakeups to preferred semi-idle packages
  sched: nominate preferred wakeup cpu
  sched: favour lower logical cpu number for sched_mc balance
  sched: framework for sched_mc/smt_power_savings=N
  sched: convert BALANCE_FOR_xx_POWER to inline functions
  x86: use possible_cpus=NUM to extend the possible cpus allowed
  x86: fix cpu_mask_to_apicid_and to include cpu_online_mask
  x86: update io_apic.c to the new cpumask code
  x86: Introduce topology_core_cpumask()/topology_thread_cpumask()
  x86: xen: use smp_call_function_many()
  x86: use work_on_cpu in x86/kernel/cpu/mcheck/mce_amd_64.c
  ...

Fixed up trivial conflict in kernel/time/tick-sched.c manually

15 years agoMerge branch 'kvm-updates/2.6.29' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Fri, 2 Jan 2009 19:41:11 +0000 (11:41 -0800)] 
Merge branch 'kvm-updates/2.6.29' of git://git./linux/kernel/git/avi/kvm

* 'kvm-updates/2.6.29' of git://git.kernel.org/pub/scm/linux/kernel/git/avi/kvm: (140 commits)
  KVM: MMU: handle large host sptes on invlpg/resync
  KVM: Add locking to virtual i8259 interrupt controller
  KVM: MMU: Don't treat a global pte as such if cr4.pge is cleared
  MAINTAINERS: Maintainership changes for kvm/ia64
  KVM: ia64: Fix kvm_arch_vcpu_ioctl_[gs]et_regs()
  KVM: x86: Rework user space NMI injection as KVM_CAP_USER_NMI
  KVM: VMX: Fix pending NMI-vs.-IRQ race for user space irqchip
  KVM: fix handling of ACK from shared guest IRQ
  KVM: MMU: check for present pdptr shadow page in walk_shadow
  KVM: Consolidate userspace memory capability reporting into common code
  KVM: Advertise the bug in memory region destruction as fixed
  KVM: use cpumask_var_t for cpus_hardware_enabled
  KVM: use modern cpumask primitives, no cpumask_t on stack
  KVM: Extract core of kvm_flush_remote_tlbs/kvm_reload_remote_mmus
  KVM: set owner of cpu and vm file operations
  anon_inodes: use fops->owner for module refcount
  x86: KVM guest: kvm_get_tsc_khz: return khz, not lpj
  KVM: MMU: prepopulate the shadow on invlpg
  KVM: MMU: skip global pgtables on sync due to cr3 switch
  KVM: MMU: collapse remote TLB flushes on root sync
  ...

15 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6
Linus Torvalds [Fri, 2 Jan 2009 18:32:18 +0000 (10:32 -0800)] 
Merge git://git./linux/kernel/git/bart/ide-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6: (32 commits)
  ide-atapi: start dma in a drive-specific way
  ide-atapi: put the rest of non-ide-cd code into the else-clause of ide_transfer_pc
  ide-atapi: remove timeout arg to ide_issue_pc
  ide-cd: remove handler wrappers
  ide-cd: remove xferlen arg to cdrom_start_packet_command
  ide-atapi: split drive-specific functionality in ide_issue_pc
  ide-atapi: assign expiry and timeout based on device type
  ide-atapi: compute cmd_len based on device type in ide_transfer_pc
  ide: remove the last ide-scsi remnants
  ide-atapi: remove ide-scsi remnants from ide_pc_intr()
  ide-atapi: remove ide-scsi remnants from ide_transfer_pc()
  ide-atapi: remove ide-scsi remnants from ide_issue_pc
  ide-cd: move cdrom_timer_expiry to ide-atapi.c
  ide-atapi: teach ide atapi about drive->waiting_for_dma
  ide-atapi: accomodate transfer length calculation for ide-cd
  ide-atapi: setup dma for ide-cd
  ide-atapi: combine drive-specific assignments
  ide-atapi: add a dev_is_idecd-inline
  remove ide-scsi
  ide-floppy: allocate only toplevel packet commands
  ...

15 years agoMerge branch 'for-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/dvrabel/uwb
Linus Torvalds [Fri, 2 Jan 2009 18:31:04 +0000 (10:31 -0800)] 
Merge branch 'for-upstream' of git://git./linux/kernel/git/dvrabel/uwb

* 'for-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/dvrabel/uwb: (31 commits)
  uwb: remove beacon cache entry after calling uwb_notify()
  uwb: remove unused include/linux/uwb/debug.h
  uwb: use print_hex_dump()
  uwb: use dev_dbg() for debug messages
  uwb: fix memory leak in uwb_rc_notif()
  wusb: fix oops when terminating a non-existant reservation
  uwb: fix oops when terminating an already terminated reservation
  uwb: improved MAS allocator and reservation conflict handling
  wusb: add debug files for ASL, PZL and DI to the whci-hcd driver
  uwb: fix oops in debug PAL's reservation callback
  uwb: clean up whci_wait_for() timeout error message
  wusb: whci-hcd shouldn't do ASL/PZL updates while channel is inactive
  uwb: remove unused beacon group join/leave events
  wlp: start/stop radio on network interface up/down
  uwb: add basic radio manager
  uwb: add pal parameter to new reservation callback
  uwb: fix races between events and neh timers
  uwb: don't unbind the radio controller driver when resetting
  uwb: per-radio controller event thread and beacon cache
  uwb: add commands to add/remove IEs to the debug interface
  ...

15 years agoUpdate powerpc maintainers
Paul Mackerras [Fri, 2 Jan 2009 04:40:55 +0000 (15:40 +1100)] 
Update powerpc maintainers

Ben Herrenschmidt is taking over as the primary powerpc architecture
maintainer.  I'll still be around as his backup/deputy.

Signed-off-by: Paul Mackerras <paulus@samba.org>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agoMerge branch 'i8k-updates' from Alan
Linus Torvalds [Fri, 2 Jan 2009 18:28:41 +0000 (10:28 -0800)] 
Merge branch 'i8k-updates' from Alan

* i8k-updates:
  i8k: Add Dell Vostro systems
  i8k: Enable i8k on Dell Precision Systems

15 years agoi8k: Add Dell Vostro systems
Federico Heinz [Fri, 2 Jan 2009 16:19:23 +0000 (16:19 +0000)] 
i8k: Add Dell Vostro systems

This trivial patch adds support for i8k on the new Dell Vostro models.
I tested it on my Vostro 1400, and it works. It does print a warning
when loading the module:

i8k: unable to get SMM BIOS version

But I couldn't figure out how to fix that. The module seems to work fine,
anyway...

Signed-off-by: Federico Heinz <fheinz@vialibre.org.ar>
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agoi8k: Enable i8k on Dell Precision Systems
Andy Spencer [Fri, 2 Jan 2009 16:19:13 +0000 (16:19 +0000)] 
i8k: Enable i8k on Dell Precision Systems

Patch to enable i8k on Dell Precisions.

Signed-off-by: Andy Spencer <spenceal@rose-hulman.edu>
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agoFix compiler warning in arch/x86/mm/init_32.c
Ingo Brueckl [Fri, 2 Jan 2009 13:42:00 +0000 (14:42 +0100)] 
Fix compiler warning in arch/x86/mm/init_32.c

Signed-off-by: Ingo Brueckl <ib@wupperonline.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agoMerge branch 'tty-updates' from Alan
Linus Torvalds [Fri, 2 Jan 2009 18:25:51 +0000 (10:25 -0800)] 
Merge branch 'tty-updates' from Alan

* tty-updates: (75 commits)
  serial_8250: support for Sealevel Systems Model 7803 COMM+8
  hso maintainers update patch
  hso modem detect fix patch against Alan Cox'es tty tree
  tty: Fix an ircomm warning and note another bug
  drivers/char/cyclades.c: cy_pci_probe: fix error path
  Serial: UART driver changes for Cavium OCTEON.
  Serial: Allow port type to be specified when calling serial8250_register_port.
  8250: Serial driver changes to support future Cavium OCTEON serial patches.
  8250: Don't clobber spinlocks.
  fix for tty-serial-move-port
  tty: We want the port object to be persistent
  __FUNCTION__ is gcc-specific, use __func__
  serial: RS485 ioctl structure uses __u32 include linux/types.h
  tty: Drop the lock_kernel in the private ioctl hook
  synclink_cs: Convert to tty_port
  tty: use port methods for the rocket driver
  tty: kref the rocket driver
  tty: make rocketport use standard port->flags
  tty: Redo the rocket driver locking
  tty: Make epca use the port helpers
  ...

15 years agoserial_8250: support for Sealevel Systems Model 7803 COMM+8
Flavio Leitner [Fri, 2 Jan 2009 13:50:43 +0000 (13:50 +0000)] 
serial_8250: support for Sealevel Systems Model 7803 COMM+8

Add support for Sealevel Systems Model 7803 COMM+8

Signed-off-by: Flavio Leitner <fleitner@redhat.com>
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agohso maintainers update patch
Denis Joseph Barrow [Fri, 2 Jan 2009 13:50:36 +0000 (13:50 +0000)] 
hso maintainers update patch

Added D.J. Barrow as maintainer of hso driver.

Signed-off-by: Denis Joseph Barrow <D.Barow@option.com>
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agohso modem detect fix patch against Alan Cox'es tty tree
Denis Joseph Barrow [Fri, 2 Jan 2009 13:50:29 +0000 (13:50 +0000)] 
hso modem detect fix patch against Alan Cox'es tty tree

Fixed incorrect check for the modem port, this prevents
crashes caused by issueing a tiocmget_submit_urb
on endpoints which don't exist for non modem devices.

Signed-off-by: Denis Joseph Barrow <D.Barow@option.com>
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agotty: Fix an ircomm warning and note another bug
Alan Cox [Fri, 2 Jan 2009 13:50:20 +0000 (13:50 +0000)] 
tty: Fix an ircomm warning and note another bug

Roel Kluin noted that line is unsigned so one test is unneccessary. Also
add a warning for another flaw I noticed while making this change.

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agodrivers/char/cyclades.c: cy_pci_probe: fix error path
Andrew Morton [Fri, 2 Jan 2009 13:50:07 +0000 (13:50 +0000)] 
drivers/char/cyclades.c: cy_pci_probe: fix error path

We forgot to release resources in one case.

Addresses http://bugzilla.kernel.org/show_bug.cgi?id=12137

Reported-by: Florian Lohoff <flo@rfc822.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agoSerial: UART driver changes for Cavium OCTEON.
David Daney [Fri, 2 Jan 2009 13:50:00 +0000 (13:50 +0000)] 
Serial: UART driver changes for Cavium OCTEON.

Cavium UART implementation is not covered by existing uart_configS.
Define a new uart_config (PORT_OCTEON) which is specified by OCTEON
platform device registration code.

Signed-off-by: Tomaso Paoletti <tpaoletti@caviumnetworks.com>
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agoSerial: Allow port type to be specified when calling serial8250_register_port.
David Daney [Fri, 2 Jan 2009 13:49:54 +0000 (13:49 +0000)] 
Serial: Allow port type to be specified when calling serial8250_register_port.

Add flag value UPF_FIXED_TYPE which specifies that the UART type is
known and should not be probed.  For this case the UARTs properties
are just copied out of the uart_config entry.

This allows us to keep SOC specific 8250 probe code out of 8250.c.  In
this case we know the serial hardware will not be changing as it is on
the same silicon as the CPU, and we can specify it with certainty in
the board/cpu setup code.

The alternative is to load up 8250.c with a bunch of OCTEON specific
special cases in the probing code.

Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years ago8250: Serial driver changes to support future Cavium OCTEON serial patches.
David Daney [Fri, 2 Jan 2009 13:49:47 +0000 (13:49 +0000)] 
8250: Serial driver changes to support future Cavium OCTEON serial patches.

In order to use Cavium OCTEON specific serial i/o drivers, we first
patch the 8250 driver to use replaceable I/O functions.  Compatible
I/O functions are added for existing iotypeS.

An added benefit of this change is that it makes it easy to factor
some of the existing special cases out to board/SOC specific support
code.

The alternative is to load up 8250.c with a bunch of OCTEON specific
iotype code and bug work-arounds.

Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Signed-off-by: Tomaso Paoletti <tpaoletti@caviumnetworks.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years ago8250: Don't clobber spinlocks.
David Daney [Fri, 2 Jan 2009 13:49:41 +0000 (13:49 +0000)] 
8250: Don't clobber spinlocks.

In serial8250_isa_init_ports(), the port's lock is initialized.  We
should not overwrite it.  In early_serial_setup(), only copy in the
fields we need.  Since the early console code only uses a subset of
the fields, these are sufficient.

Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Signed-off-by: Tomaso Paoletti <tpaoletti@caviumnetworks.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agofix for tty-serial-move-port
Alexander Beregalov [Fri, 2 Jan 2009 13:49:32 +0000 (13:49 +0000)] 
fix for tty-serial-move-port

Hi Alan

next-20081204 crashes with the following message:

BUG: unable to handle kernel paging request at ffff88007d320248
IP: [<ffffffff803de934>] uart_remove_one_port+0xef/0x111
                kfree(info);
     393:       49 8d 7d 10             lea    0x10(%r13),%rdi
     397:       e8 00 00 00 00          callq  39c <uart_remove_one_port+0xef>

Signed-off-by: Alexander Beregalov <a.beregalov@gmail.com>
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agotty: We want the port object to be persistent
Alan Cox [Fri, 2 Jan 2009 13:49:21 +0000 (13:49 +0000)] 
tty: We want the port object to be persistent

Move the tty_port and uart_info bits around a little. By embedding the uart_info
into the uart_port we get rid of lots of corner case testing and also get the
ability to go port<->state<->info which is a bit more elegant than the current
data structures.

Downsides - we allocate a tiny bit more memory for unused ports, upside we've
removed as much code as it saved for most users..

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years ago__FUNCTION__ is gcc-specific, use __func__
Harvey Harrison [Fri, 2 Jan 2009 13:49:13 +0000 (13:49 +0000)] 
__FUNCTION__ is gcc-specific, use __func__

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agoserial: RS485 ioctl structure uses __u32 include linux/types.h
Andy Whitcroft [Fri, 2 Jan 2009 13:49:04 +0000 (13:49 +0000)] 
serial: RS485 ioctl structure uses __u32 include linux/types.h

In the commit below a new struct serial_rs485 was introduced for a new
ioctl:

    commit c26c56c0f40e200e61d1390629c806f6adaffbcc
    Author: Alan Cox <alan@redhat.com>
    Date:   Mon Oct 13 10:37:48 2008 +0100

tty: Cris has a nice RS485 ioctl so we should steal it

This structure uses the __u32 types for some of its members, which leads
to the following compile error:

    $ cc -I.../include -c X.c
    In file included from X.c:2: .../include/linux/serial.h:185:
error: expected specifier-qualifier-list before ‘__u32’
    $

It seems that these types are appropriate for this structure as it is
to be exposed to userspace.  These types are available via linux/types.h
so move the include of that outside the __KERNEL__ section.

Signed-off-by: Andy Whitcroft <apw@canonical.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agotty: Drop the lock_kernel in the private ioctl hook
Alan Cox [Fri, 2 Jan 2009 13:48:56 +0000 (13:48 +0000)] 
tty: Drop the lock_kernel in the private ioctl hook

We don't need the BKL here any more so it can go. In a couple of spots the
driver requirements are not clear so push the lock down into the driver.

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agosynclink_cs: Convert to tty_port
Alan Cox [Fri, 2 Jan 2009 13:48:47 +0000 (13:48 +0000)] 
synclink_cs: Convert to tty_port

Use the tty port operations, add refcounting, and refactor a bit to make the
refcounting work cleanly.

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agotty: use port methods for the rocket driver
Alan Cox [Fri, 2 Jan 2009 13:48:39 +0000 (13:48 +0000)] 
tty: use port methods for the rocket driver

Now we have our ducks in order we can begin switching to the port
operations

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agotty: kref the rocket driver
Alan Cox [Fri, 2 Jan 2009 13:48:30 +0000 (13:48 +0000)] 
tty: kref the rocket driver

We will need this kref fitted to make full use of the port operations.

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agotty: make rocketport use standard port->flags
Alan Cox [Fri, 2 Jan 2009 13:48:23 +0000 (13:48 +0000)] 
tty: make rocketport use standard port->flags

We need to this ready for using the standard helpers

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agotty: Redo the rocket driver locking
Alan Cox [Fri, 2 Jan 2009 13:48:17 +0000 (13:48 +0000)] 
tty: Redo the rocket driver locking

Bring this driver into the port locking model

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agotty: Make epca use the port helpers
Alan Cox [Fri, 2 Jan 2009 13:48:11 +0000 (13:48 +0000)] 
tty: Make epca use the port helpers

Now the locking is straight and the port kref usage is straight we can
replace lots of chunks of code with the standard port helpers

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agotty: refcount the epca driver
Alan Cox [Fri, 2 Jan 2009 13:48:04 +0000 (13:48 +0000)] 
tty: refcount the epca driver

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agotty: relock epca
Alan Cox [Fri, 2 Jan 2009 13:47:58 +0000 (13:47 +0000)] 
tty: relock epca

Bring epca into line with the port locking.

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agotty: Modem functions for the HSO driver
Denis Joseph Barrow [Fri, 2 Jan 2009 13:47:52 +0000 (13:47 +0000)] 
tty: Modem functions for the HSO driver

Makes TIOCM ioctls for Data Carrier Detect & related functions
work like /drivers/serial/serial-core.c potentially needed
for pppd & similar user programs.

Signed-off-by: Denis Joseph Barrow <D.Barow@option.com>
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agotty: Fix the HSO termios handling a bit
Alan Cox [Fri, 2 Jan 2009 13:47:45 +0000 (13:47 +0000)] 
tty: Fix the HSO termios handling a bit

Init the tty structure once
Don't set ->low_latency twice in a row
Don't force bits we should be leaving to the user
Don't allocate termios arrays as these are in fact allocated by the tty layer
for you and just overwrite the ones allocated in the driver

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agohso: net driver using tty without locking
Alan Cox [Fri, 2 Jan 2009 13:47:39 +0000 (13:47 +0000)] 
hso: net driver using tty without locking

Checking tty == NULL doesn't help us unless we have a clear semantic for
the locking of the tty object in the driver. Use the tty kref objects so that
we can take references to the tty in the USB event handling paths.

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agotty: kref nozomi
Alan Cox [Fri, 2 Jan 2009 13:47:32 +0000 (13:47 +0000)] 
tty: kref nozomi

Update the nozomi driver to use krefs

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agotty: Remove some pointless casts
Alan Cox [Fri, 2 Jan 2009 13:47:26 +0000 (13:47 +0000)] 
tty: Remove some pointless casts

disc_data and driver_data are void *

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agotty: PTYs set TTY_DO_WRITE_WAKEUP when they don't need to
Alan Cox [Fri, 2 Jan 2009 13:47:20 +0000 (13:47 +0000)] 
tty: PTYs set TTY_DO_WRITE_WAKEUP when they don't need to

The write wakeup is done anyway for the poll while DO_WRITE_WAKUP is
cleared, set and managed by the ldisc layer and is no business of the pty
code.

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agotty: N_TTY SIGIO only works for read
Thomas Pfaff [Fri, 2 Jan 2009 13:47:13 +0000 (13:47 +0000)] 
tty: N_TTY SIGIO only works for read

The N_TTY ldisc layer does not send SIGIO POLL_OUTs correctly when output is
possible due to flawed handling of the TTY_DO_WRITE_WAKEUP bit. It will
either send no SIGIOs at all or on every tty wakeup.

The fix is to set the bit when the tty driver write would block and test
and clear it on write wakeup.

[Merged with existing N_TTY patches and a small buglet fixed -- Alan]

Signed-off-by: Thomas Pfaff <tpfaff@pcs.com>
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agotty: USB tty devices can block in tcdrain when unplugged
Alan Cox [Fri, 2 Jan 2009 13:47:06 +0000 (13:47 +0000)] 
tty: USB tty devices can block in tcdrain when unplugged

The underlying problem is that the device methods don't all correctly
handle disconnected status and some keep reporting bytes pending which
causes tcdrain to stall.

When the cable is unplugged they are definitely gone, and as this is true
for all USB cables we can fix it in the core usb serial code.

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agoserial: set correct baud_base for Oxford Semiconductor Ltd EXSYS EX-41092 Dual 16950...
Niels de Vos [Fri, 2 Jan 2009 13:46:58 +0000 (13:46 +0000)] 
serial: set correct baud_base for Oxford Semiconductor Ltd EXSYS EX-41092 Dual 16950 Serial adapter

The PCI-card identified as "Oxford Semiconductor Ltd EXSYS EX-41092 Dual
16950 Serial adapter" is only usable with other devices (i.e. not the same
card) after doing a "setserial /dev/ttyS<n> baud_base 115200".  This
baud_base should be default for this card.

Signed-off-by: Niels de Vos <niels.devos@wincor-nixdorf.com>
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agotty: Introduce some close helpers for ports
Alan Cox [Fri, 2 Jan 2009 13:46:50 +0000 (13:46 +0000)] 
tty: Introduce some close helpers for ports

Again this is a lot of common code we can unify

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agotty: tty port zero baud open
Alan Cox [Fri, 2 Jan 2009 13:46:43 +0000 (13:46 +0000)] 
tty: tty port zero baud open

If we have no speed set at some point then we should not raise DTR/RTS at
that point when opening as the tty is not ready

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agotty: ESP has been broken for locking etc forver
Alan Cox [Fri, 2 Jan 2009 13:46:34 +0000 (13:46 +0000)] 
tty: ESP has been broken for locking etc forver

Mark it broken

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agotty: rework stallion to use the tty_port bits
Alan Cox [Fri, 2 Jan 2009 13:46:24 +0000 (13:46 +0000)] 
tty: rework stallion to use the tty_port bits

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agotty: Rework istallion to use the tty port changes
Alan Cox [Fri, 2 Jan 2009 13:46:18 +0000 (13:46 +0000)] 
tty: Rework istallion to use the tty port changes

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agotty: Introduce a tty_port generic block_til_ready
Alan Cox [Fri, 2 Jan 2009 13:46:10 +0000 (13:46 +0000)] 
tty: Introduce a tty_port generic block_til_ready

Start sucking more commonality out of the drivers into a single piece of
core code.

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agotty: relock the mxser driver
Alan Cox [Fri, 2 Jan 2009 13:45:58 +0000 (13:45 +0000)] 
tty: relock the mxser driver

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agotty: relock riscom8 using port locks
Alan Cox [Fri, 2 Jan 2009 13:45:50 +0000 (13:45 +0000)] 
tty: relock riscom8 using port locks

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agotty: rocketport uses different port flags to everyone else
Alan Cox [Fri, 2 Jan 2009 13:45:44 +0000 (13:45 +0000)] 
tty: rocketport uses different port flags to everyone else

Normalise them so we can use the common helpers later on

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agotty: relock generic_serial
Alan Cox [Fri, 2 Jan 2009 13:45:36 +0000 (13:45 +0000)] 
tty: relock generic_serial

Switch generic_serial to do port count locking via the tty_port structure
ready for moving to a common port wait routine. Keep the old driver lock for
internal calling so we don't risk messing up the drivers below until we
are ready.

Still needs kref conversions

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agoisicom: redo locking to use tty port locks
Alan Cox [Fri, 2 Jan 2009 13:45:26 +0000 (13:45 +0000)] 
isicom: redo locking to use tty port locks

This helps set the basis for moving block_til_ready into common code. We also
introduce a tty_port_hangup helper as this will also be generally needed.

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agotty: Pull the dtr raise into tty port
Alan Cox [Fri, 2 Jan 2009 13:45:19 +0000 (13:45 +0000)] 
tty: Pull the dtr raise into tty port

This moves another per device special out of what should be shared open
wait paths into private methods

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agorio: Kill off ckmalloc
Alan Cox [Fri, 2 Jan 2009 13:45:12 +0000 (13:45 +0000)] 
rio: Kill off ckmalloc

This was an alloc/clear wrapper but makes even less sense now it uses
kzalloc. Kill it off.

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agotty_port: Add a port level carrier detect operation
Alan Cox [Fri, 2 Jan 2009 13:45:05 +0000 (13:45 +0000)] 
tty_port: Add a port level carrier detect operation

This is the first step to generalising the various pieces of waiting logic
duplicated in all sorts of serial drivers.

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agotty: Fix PPP hang under load
Alan Cox [Fri, 2 Jan 2009 13:44:56 +0000 (13:44 +0000)] 
tty: Fix PPP hang under load

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agoCRED: Wrap task credential accesses in the devpts filesystem
David Howells [Fri, 2 Jan 2009 13:44:49 +0000 (13:44 +0000)] 
CRED: Wrap task credential accesses in the devpts filesystem

Wrap access to task credentials so that they can be separated more easily from
the task_struct during the introduction of COW creds.

Change most current->(|e|s|fs)[ug]id to current_(|e|s|fs)[ug]id().

Change some task->e?[ug]id to task_e?[ug]id().  In some places it makes more
sense to use RCU directly rather than a convenient wrapper; these will be
addressed by later patches.

Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agoAdd device function for USB serial console
Kevin Hao [Fri, 2 Jan 2009 13:44:34 +0000 (13:44 +0000)] 
Add device function for USB serial console

Add device funtion for usb serial console, so we can open /dev/console
when we use a usb serial device as console.

(Typecast removed as noted by Sergei Shtylyov)

Signed-off-by: Kevin Hao <kexin.hao@windriver.com>
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agoAnd here's a patch (to be applied on top of the last) which prevents
Russell King [Fri, 2 Jan 2009 13:44:27 +0000 (13:44 +0000)] 
And here's a patch (to be applied on top of the last) which prevents

this happening again by making use of 'const'.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>