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2014-06-19doc: replace "practise" with "practice" in DocumentationJeremiah Mahler1-1/+1
To keep the Documentation consistent either "practise" or "practice" should be used. Since there are 3 lines with "practise" ~/linux/Documentation$ grep -r practise * | wc -l 3 and 108 lines with "practice" ~/linux/Documentation$ grep -r practice * | wc -l 108 this patch converts "practise" to "practice". Signed-off-by: Jeremiah Mahler <jmmahler@gmail.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2014-02-21Merge branch 'pci/dead-code' into nextBjorn Helgaas1-4/+0
* pci/dead-code: PCI: Remove unused SR-IOV VF Migration support iommu/amd: Add include of <linux/irqreturn.h> mei: Add include of <linux/irqreturn.h> misc: mic: Add include of <linux/irqreturn.h>
2014-02-19PCI: Remove unused SR-IOV VF Migration supportBjorn Helgaas1-4/+0
This reverts commit 74bb1bcc7dbb ("PCI: handle SR-IOV Virtual Function Migration"), removing this exported interface: pci_sriov_migration() Since pci_sriov_migration() is unused, it is impossible to schedule sriov_migration_task() or use any of the other migration infrastructure. This is based on Stephen Hemminger's patch (see link below), but goes a bit further. Link: http://lkml.kernel.org/r/20131227132710.7190647c@nehalam.linuxnetplumber.net Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> CC: Stephen Hemminger <stephen@networkplumber.org>
2014-02-13PCI/MSI: Add pci_enable_msi_exact() and pci_enable_msix_exact()Alexander Gordeev1-2/+84
The new functions are special cases for pci_enable_msi_range() and pci_enable_msix_range() when a particular number of MSI or MSI-X is needed. By contrast with pci_enable_msi_range() and pci_enable_msix_range() functions, pci_enable_msi_exact() and pci_enable_msix_exact() return zero in case of success, which indicates MSI or MSI-X interrupts have been successfully allocated. Signed-off-by: Alexander Gordeev <agordeev@redhat.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2014-02-13PCI/MSI: Fix cut-and-paste errors in documentationAlexander Gordeev1-6/+6
Function pci_enable_msi_range() is used in examples where pci_enable_msix_range() should have been used instead. Reported-by: Bjorn Helgaas <bhelgaas@google.com> Signed-off-by: Alexander Gordeev <agordeev@redhat.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2014-02-04PCI/MSI: Add pci_enable_msi() documentation backAlexander Gordeev1-3/+20
We deprecated pci_enable_msi() in 302a2523c277 ("PCI/MSI: Add pci_enable_msi_range() and pci_enable_msix_range()"). But we changed our minds after noticing that: - pci_enable_msi() doesn't have confusing return values like pci_enable_msi_block() and pci_enable_msix() did, and - pci_enable_msi() has a hundred or so callers that we don't want to change. This adds back the pci_enable_msi() documentation. [bhelgaas: changelog] Signed-off-by: Alexander Gordeev <agordeev@redhat.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2014-01-08Merge branch 'pci/msi' into nextBjorn Helgaas1-98/+210
* pci/msi: PCI/MSI: Add pci_enable_msi_range() and pci_enable_msix_range() PCI/MSI: Add pci_msix_vec_count() PCI/MSI: Remove pci_enable_msi_block_auto() PCI/MSI: Add pci_msi_vec_count()
2014-01-08Merge branch 'pci/misc' into nextBjorn Helgaas1-2/+2
* pci/misc: PCI: Update documentation 00-INDEX file PCI: Convert ioapic to be builtin only, not modular
2014-01-08PCI: Update documentation 00-INDEX fileErik Ekman1-2/+2
The PCI-DMA-mapping.txt moved to general docs and became DMA-API-HOWTO.txt in 5e07c2c7301b ("Documentation: rename PCI/PCI-DMA-mapping.txt to DMA-API-HOWTO.txt"). Add new file about PCI Express I/O Virtualization. Signed-off-by: Erik Ekman <erik@kryo.se> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2014-01-04PCI/MSI: Add pci_enable_msi_range() and pci_enable_msix_range()Alexander Gordeev1-75/+186
This adds pci_enable_msi_range(), which supersedes the pci_enable_msi() and pci_enable_msi_block() MSI interfaces. It also adds pci_enable_msix_range(), which supersedes the pci_enable_msix() MSI-X interface. The old interfaces have three categories of return values: negative: failure; caller should not retry positive: failure; value indicates number of interrupts that *could* have been allocated, and caller may retry with a smaller request zero: success; at least as many interrupts allocated as requested It is error-prone to handle these three cases correctly in drivers. The new functions return either a negative error code or a number of successfully allocated MSI/MSI-X interrupts, which is expected to lead to clearer device driver code. pci_enable_msi(), pci_enable_msi_block() and pci_enable_msix() still exist unchanged, but are deprecated and may be removed after callers are updated. [bhelgaas: tweak changelog] Suggested-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: Alexander Gordeev <agordeev@redhat.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Tejun Heo <tj@kernel.org>
2014-01-04PCI/MSI: Add pci_msix_vec_count()Alexander Gordeev1-0/+13
This creates an MSI-X counterpart for pci_msi_vec_count(). Device drivers can use this function to obtain maximum number of MSI-X interrupts the device supports and use that number in a subsequent call to pci_enable_msix(). pci_msix_vec_count() supersedes pci_msix_table_size() and returns a negative errno if device does not support MSI-X interrupts. After this update, callers must always check the returned value. The only user of pci_msix_table_size() was the PCI-Express port driver, which is also updated by this change. Signed-off-by: Alexander Gordeev <agordeev@redhat.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Tejun Heo <tj@kernel.org>
2014-01-04PCI/MSI: Remove pci_enable_msi_block_auto()Alexander Gordeev1-33/+6
The new pci_msi_vec_count() interface makes pci_enable_msi_block_auto() superfluous. Drivers can use pci_msi_vec_count() to learn the maximum number of MSIs supported by the device, and then call pci_enable_msi_block(). pci_enable_msi_block_auto() was introduced recently, and its only user is the AHCI driver, which is also updated by this change. Signed-off-by: Alexander Gordeev <agordeev@redhat.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Acked-by: Tejun Heo <tj@kernel.org>
2014-01-04PCI/MSI: Add pci_msi_vec_count()Alexander Gordeev1-0/+15
Device drivers can use this interface to obtain the maximum number of MSI interrupts the device supports and use that number, e.g., in a subsequent call to pci_enable_msi_block(). Signed-off-by: Alexander Gordeev <agordeev@redhat.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Tejun Heo <tj@kernel.org>
2013-12-20Merge branch 'pci/misc' into nextBjorn Helgaas1-2/+4
* pci/misc: PCI/checkpatch: Deprecate DEFINE_PCI_DEVICE_TABLE
2013-12-20PCI/MSI: Make pci_enable_msi/msix() 'nvec' argument type as intAlexander Gordeev1-1/+1
Make pci_enable_msi_block(), pci_enable_msi_block_auto() and pci_enable_msix() consistent with regard to the type of 'nvec' argument. Signed-off-by: Alexander Gordeev <agordeev@redhat.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Tejun Heo <tj@kernel.org>
2013-12-13PCI/checkpatch: Deprecate DEFINE_PCI_DEVICE_TABLEJoe Perches1-2/+4
Prefer use of the direct definition of struct pci_device_id instead of indirection via macro DEFINE_PCI_DEVICE_TABLE. Update the PCI documentation to deprecate DEFINE_PCI_DEVICE_TABLE. Update checkpatch adding --fix option. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Jingoo Han <jg1.han@samsung.com>
2013-09-26PCI: Update pci_find_slot() description in pci.txtYijing Wang1-3/+5
pci_find_slot() has been removed from the kernel. Document its closest replacement, pci_get_domain_bus_and_slot(), instead. [bhelgaas: fix indentation, keep mention in "obsolete" section] Signed-off-by: Yijing Wang <wangyijing@huawei.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2013-01-24PCI/MSI: Enable multiple MSIs with pci_enable_msi_block_auto()Alexander Gordeev1-5/+32
The new function pci_enable_msi_block_auto() tries to allocate maximum possible number of MSIs up to the number the device supports. It generalizes a pattern when pci_enable_msi_block() is contiguously called until it succeeds or fails. Opposite to pci_enable_msi_block() which takes the number of MSIs to allocate as a input parameter, pci_enable_msi_block_auto() could be used by device drivers to obtain the number of assigned MSIs and the number of MSIs the device supports. Signed-off-by: Alexander Gordeev <agordeev@redhat.com> Acked-by: Bjorn Helgaas <bhelgaas@google.com> Cc: Suresh Siddha <suresh.b.siddha@intel.com> Cc: Yinghai Lu <yinghai@kernel.org> Cc: Matthew Wilcox <willy@linux.intel.com> Cc: Jeff Garzik <jgarzik@pobox.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/c3de2419df94a0f95ca1a6f755afc421486455e6.1353324359.git.agordeev@redhat.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-01-04Documentation: remove __dev* attributes.Greg Kroah-Hartman2-23/+3
CONFIG_HOTPLUG is going away as an option. As a result, the __dev* markings need to be removed. This change removes the use of __devinit, __devexit_p, __devinitdata, __devinitconst, and __devexit from the kernel documentation. Based on patches originally written by Bill Pemberton, but redone by me in order to handle some of the coding style issues better, by hand. Cc: Bill Pemberton <wfp5p@virginia.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-11-28PCI: SRIOV control and status via sysfs (documentation)Donald Dutile1-4/+44
Add documentation of new sysfs files and new pci_driver SRIOV configuration interface. [bhelgaas: changelog] Signed-off: Donald Dutile <ddutile@redhat.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2011-09-27doc: fix broken referencesPaul Bolle1-1/+1
There are numerous broken references to Documentation files (in other Documentation files, in comments, etc.). These broken references are caused by typo's in the references, and by renames or removals of the Documentation files. Some broken references are simply odd. Fix these broken references, sometimes by dropping the irrelevant text they were part of. Signed-off-by: Paul Bolle <pebolle@tiscali.nl> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2011-08-03Docs: MSI-HOWTO: MSI -> MSIsMichael Witten1-1/+1
Signed-off-by: Michael Witten <mfwitten@gmail.com> Acked-by: Matthew Wilcox <matthew.r.wilcox@intel.com> Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
2011-08-03Docs: MSI-HOWTO: Insert a commaMichael Witten1-1/+1
Signed-off-by: Michael Witten <mfwitten@gmail.com> Acked-by: Matthew Wilcox <matthew.r.wilcox@intel.com> Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
2011-08-03Docs: MSI-HOWTO: can -> couldMichael Witten1-1/+1
Signed-off-by: Michael Witten <mfwitten@gmail.com> Acked-by: Matthew Wilcox <matthew.r.wilcox@intel.com> Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
2011-08-03Docs: MSI-HOWTO: Use `unknown ...' rather than `... know about.'Michael Witten1-1/+1
Signed-off-by: Michael Witten <mfwitten@gmail.com> Acked-by: Matthew Wilcox <matthew.r.wilcox@intel.com> Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
2011-08-03Docs: MSI-HOWTO: may -> mightMichael Witten1-1/+1
Signed-off-by: Michael Witten <mfwitten@gmail.com> Acked-by: Matthew Wilcox <matthew.r.wilcox@intel.com> Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
2011-08-03Docs: MSI-HOWTO: Insert a commaMichael Witten1-1/+1
Signed-off-by: Michael Witten <mfwitten@gmail.com> Acked-by: Matthew Wilcox <matthew.r.wilcox@intel.com> Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
2011-08-03Docs: MSI-HOWTO: API -> functionMichael Witten1-1/+1
Signed-off-by: Michael Witten <mfwitten@gmail.com> Acked-by: Matthew Wilcox <matthew.r.wilcox@intel.com> Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
2011-08-03Docs: MSI-HOWTO: , -> ;Michael Witten1-1/+1
Signed-off-by: Michael Witten <mfwitten@gmail.com> Acked-by: Matthew Wilcox <matthew.r.wilcox@intel.com> Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
2011-08-03Docs: MSI-HOWTO: Move a sentence to another paragraphMichael Witten1-4/+3
Signed-off-by: Michael Witten <mfwitten@gmail.com> Acked-by: Matthew Wilcox <matthew.r.wilcox@intel.com> Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
2011-08-03Docs: MSI-HOWTO: Insert `that'Michael Witten1-1/+1
... as per Randy Dunlap's wishes :-P Message-Id: <20110717114023.2b4cce91.rdunlap@xenotime.net> Signed-off-by: Michael Witten <mfwitten@gmail.com> Acked-by: Matthew Wilcox <matthew.r.wilcox@intel.com> Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
2011-08-03Docs: MSI-HOWTO: Offset modifier with a comma, and insert `yet' for emphasisMichael Witten1-3/+3
Signed-off-by: Michael Witten <mfwitten@gmail.com> Acked-by: Matthew Wilcox <matthew.r.wilcox@intel.com> Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
2011-08-03Docs: MSI-HOWTO: Put the `because' subordinate clause firstMichael Witten1-4/+4
Signed-off-by: Michael Witten <mfwitten@gmail.com> Acked-by: Matthew Wilcox <matthew.r.wilcox@intel.com> Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
2011-08-03Docs: MSI-HOWTO: Streamline some wordingMichael Witten1-2/+2
Signed-off-by: Michael Witten <mfwitten@gmail.com> Acked-by: Matthew Wilcox <matthew.r.wilcox@intel.com> Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
2011-08-03Docs: MSI-HOWTO: `asked for' -> `requested'Michael Witten1-1/+1
Signed-off-by: Michael Witten <mfwitten@gmail.com> Acked-by: Matthew Wilcox <matthew.r.wilcox@intel.com> Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
2011-08-03Docs: MSI-HOWTO: Use present tense and streamline some wordingMichael Witten1-22/+22
Signed-off-by: Michael Witten <mfwitten@gmail.com> Acked-by: Matthew Wilcox <matthew.r.wilcox@intel.com> Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
2011-08-03Docs: MSI-HOWTO: Use the subjunctive, and change `can' to `may'Michael Witten1-1/+1
Signed-off-by: Michael Witten <mfwitten@gmail.com> Acked-by: Matthew Wilcox <matthew.r.wilcox@intel.com> Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
2011-03-31Fix common misspellingsLucas De Marchi1-2/+2
Fixes generated by 'codespell' and manually reviewed. Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
2010-07-12Documentation: pci.txt: fix typoKulikov Vasiliy1-1/+1
Doubled 'not'. Signed-off-by: Kulikov Vasiliy <segooon@gmail.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2010-05-22Merge branch 'linux-next' of ↵Linus Torvalds1-16/+13
git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6 * 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6: (36 commits) PCI: hotplug: pciehp: Removed check for hotplug of display devices PCI: read memory ranges out of Broadcom CNB20LE host bridge PCI: Allow manual resource allocation for PCI hotplug bridges x86/PCI: make ACPI MCFG reserved error messages ACPI specific PCI hotplug: Use kmemdup PM/PCI: Update PCI power management documentation PCI: output FW warning in pci_read/write_vpd PCI: fix typos pci_device_dis/enable to pci_dis/enable_device in comments PCI quirks: disable msi on AMD rs4xx internal gfx bridges PCI: Disable MSI for MCP55 on P5N32-E SLI x86/PCI: irq and pci_ids patch for additional Intel Cougar Point DeviceIDs PCI: aerdrv: trivial cleanup for aerdrv_core.c PCI: aerdrv: trivial cleanup for aerdrv.c PCI: aerdrv: introduce default_downstream_reset_link PCI: aerdrv: rework find_aer_service PCI: aerdrv: remove is_downstream PCI: aerdrv: remove magical ROOT_ERR_STATUS_MASKS PCI: aerdrv: redefine PCI_ERR_ROOT_*_SRC PCI: aerdrv: rework do_recovery PCI: aerdrv: rework get_e_source() ...
2010-05-11PCI: aerdrv: introduce default_downstream_reset_linkHidetoshi Seto1-7/+8
I noticed that when I inject a fatal error to an endpoint via aer-inject, aer_root_reset() is called as reset_link for a downstream port at upstream of the endpoint: pcieport 0000:00:06.0: AER: Uncorrected (Fatal) error received: id=5401 : pcieport 0000:52:02.0: Root Port link has been reset It externally appears to be working, but internally issues some accesses to PCI_ERR_ROOT_COMMAND/STATUS registers that is for root port so not available on downstream port. This patch introduces default_downstream_reset_link that is a version of aer_root_reset() with no accesses to root port's register. It is used for downstream ports that has no reset_link function its specific. This patch also updates related description in pcieaer-howto.txt. Some minor fixes are included. Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com> Reviewed-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2010-05-11PCI: aerdrv, doc: update example output in pcieaer-howto.txtHidetoshi Seto1-9/+5
Follow new format. Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com> Reviewed-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2010-04-23Documentation/: it's -> its where appropriateFrancis Galiegue1-2/+2
Fix obvious cases of "it's" being used when "its" was meant. Signed-off-by: Francis Galiegue <fgaliegue@gmail.com> Acked-by: Randy Dunlap <rdunlap@xenotime.net> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2010-03-25Documentation: rename PCI/PCI-DMA-mapping.txt to DMA-API-HOWTO.txtFUJITA Tomonori1-758/+0
This patch renames PCI/PCI-DMA-mapping.txt to DMA-API-HOWTO.txt. The commit 51e7364ef281e540371f084008732b13292622f0 "Documentation: rename PCI-DMA-mapping.txt to DMA-API-HOWTO.txt" was supposed to do this but it didn't. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Acked-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-03-13Documentation: convert PCI-DMA-mapping.txt to use the generic DMA APIFUJITA Tomonori1-180/+172
- replace the PCI DMA API (i.e. pci_dma_*) with the generic DMA API. - make the document more generic (use the PCI specific explanation as an example). [akpm@linux-foundation.org: fix things Randy noticed] Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Cc: James Bottomley <James.Bottomley@HansenPartnership.com> Cc: "David S. Miller" <davem@davemloft.net> Reviewed-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-01-02Documentation: Rename Documentation/DMA-mapping.txtKusanagi Kouichi1-0/+766
It seems that Documentation/DMA-mapping.txt was supposed to be renamed to Documentation/PCI/PCI-DMA-mapping.txt. Signed-off-by: Kusanagi Kouichi <slash@ac.auone-net.jp> Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-09-10PCI: document PCIe fundamental reset interfacesMike Mason1-42/+77
The attached patch updates the Documentation/PCI/pci-error-recovery.txt file with changes related to this new bit field, as well a few unrelated updates. Signed-off-by: Linas Vepstas <linasvepstas@gmail.com> Signed-off-by: Mike Mason <mmlnx@us.ibm.com> Signed-off-by: Richard Lary <rlary@us.ibm.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2009-06-17PCI AER: software error injectionHuang Ying1-1/+1
Debugging PCIE AER code can be very difficult because it is hard to trigger various real hardware errors. This patch provide a software based error injection tool, which can fake various PCIE errors with a user space helper tool named "aer-inject". Which can be gotten from: http://www.kernel.org/pub/linux/kernel/people/yhuang/ The patch fakes AER error by faking some PCIE AER related registers and an AER interrupt for specified the PCIE device. Signed-off-by: Huang Ying <ying.huang@intel.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2009-06-17PCI AER: support invalid error source IDsZhang, Yanmin1-0/+4
When the bus id part of error source id is equal to 0 or nosourceid=1, make the kernel probe the AER status registers of all devices under the root port to find the initial error reporter. Reviewed-by: Andrew Patterson <andrew.patterson@hp.com> Signed-off-by: Zhang Yanmin <yanmin_zhang@linux.intel.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2009-06-17PCI: PCIE AER: Document for PCIE AER software error injectionHuang Ying1-0/+21
This patch adds a minimal HOWTO for PCIE AER software error injection in Documentation/PCI/pcieaer-howto.txt. Signed-off-by: Huang Ying <ying.huang@intel.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
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