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2013-03-20ALSA: snd-usb: mixer: propagate errors up the call chainDaniel Mack
In check_input_term() and parse_audio_feature_unit(), propagate the error value that has been returned by a failing function instead of -EINVAL. That helps cleaning up the error pathes in the mixer. Signed-off-by: Daniel Mack <zonque@gmail.com> Cc: <stable@vger.kernel.org> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-03-20ALSA: usb: Parse UAC2 extension unit like for UAC1Torstein Hegge
UAC2_EXTENSION_UNIT_V2 differs from UAC1_EXTENSION_UNIT, but can be handled in the same way when parsing the unit. Otherwise parse_audio_unit() fails when it sees an extension unit on a UAC2 device. UAC2_EXTENSION_UNIT_V2 is outside the range allocated by UAC1. Signed-off-by: Torstein Hegge <hegge@resisty.net> Acked-by: Daniel Mack <zonque@gmail.com> Cc: <stable@vger.kernel.org> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-03-20Merge branch 'drm-fixes-3.9' of git://people.freedesktop.org/~agd5f/linux ↵Dave Airlie
into drm-next Alex writes: "Mostly just small bug fixes. Big change is new pci ids for Richland APUs." * 'drm-fixes-3.9' of git://people.freedesktop.org/~agd5f/linux: drm/radeon: add Richland pci ids drm/radeon: add support for Richland APUs drm/radeon/benchmark: allow same domains for dma copy drm/radeon/benchmark: make sure bo blit copy exists before using it drm/radeon: fix backend map setup on 1 RB trinity boards drm/radeon: fix S/R on VM systems (cayman/TN/SI)
2013-03-20Merge branch 'drm-nouveau-fixes-3.9' of ↵Dave Airlie
git://anongit.freedesktop.org/git/nouveau/linux-2.6 into drm-next Lots of thermal fixes and fix a lockdep warning we've been seeing. * 'drm-nouveau-fixes-3.9' of git://anongit.freedesktop.org/git/nouveau/linux-2.6: drm/nv50/kms: prevent lockdep false-positive in page flipping path drm/nouveau/core: fix return value of nouveau_object_del() drm/nouveau/hwmon: do not expose a buggy temperature if it is unavailable drm/nouveau/therm: display the availability of the internal sensor drm/nouveau/therm: disable temperature management if the sensor isn't readable drm/nouveau/therm: disable auto fan management if temperature is not available drm/nv40/therm: reserve negative temperatures for errors drm/nv40/therm: disable temperature reading if the bios misses some parameters drm/nouveau/therm-ic: the temperature is off by sensor_constant, warn the user drm/nouveau/therm: remove some confusion introduced by therm_mode drm/nouveau/therm: do not make assumptions on temperature drm/nv40/therm: increase the sensor's settling delay to 20ms drm/nv40/therm: improve selection between the old and the new style
2013-03-19x86-32, microcode_intel_early: Fix crash with CONFIG_DEBUG_VIRTUALFenghua Yu
In 32-bit, __pa_symbol() in CONFIG_DEBUG_VIRTUAL accesses kernel data (e.g. max_low_pfn) that not only hasn't been setup yet in such early boot phase, but since we are in linear mode, cannot even be detected as uninitialized. Thus, use __pa_nodebug() rather than __pa_symbol() to get a global symbol's physical address. Signed-off-by: Fenghua Yu <fenghua.yu@intel.com> Link: http://lkml.kernel.org/r/1363705484-27645-1-git-send-email-fenghua.yu@intel.com Reported-and-tested-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2013-03-20md: remove CONFIG_MULTICORE_RAID456 entirelyPaul Bolle
Once instance of this Kconfig macro remained after commit 51acbcec6c42b24482bac18e42befc822524535d ("md: remove CONFIG_MULTICORE_RAID456"). Remove that one too. And, while we're at it, also remove it from the defconfig files that carry it. Signed-off-by: Paul Bolle <pebolle@tiscali.nl> Signed-off-by: NeilBrown <neilb@suse.de>
2013-03-20md/raid5: ensure sync and DISCARD don't happen at the same time.NeilBrown
A number of problems can occur due to races between resync/recovery and discard. - if sync_request calls handle_stripe() while a discard is happening on the stripe, it might call handle_stripe_clean_event before all of the individual discard requests have completed (so some devices are still locked, but not all). Since commit ca64cae96037de16e4af92678814f5d4bf0c1c65 md/raid5: Make sure we clear R5_Discard when discard is finished. this will cause R5_Discard to be cleared for the parity device, so handle_stripe_clean_event() will not be called when the other devices do become unlocked, so their ->written will not be cleared. This ultimately leads to a WARN_ON in init_stripe and a lock-up. - If handle_stripe_clean_event() does clear R5_UPTODATE at an awkward time for resync, it can lead to s->uptodate being less than disks in handle_parity_checks5(), which triggers a BUG (because it is one). So: - keep R5_Discard on the parity device until all other devices have completed their discard request - make sure we don't try to have a 'discard' and a 'sync' action at the same time. This involves a new stripe flag to we know when a 'discard' is happening, and the use of R5_Overlap on the parity disk so when a discard is wanted while a sync is active, so we know to wake up the discard at the appropriate time. Discard support for RAID5 was added in 3.7, so this is suitable for any -stable kernel since 3.7. Cc: stable@vger.kernel.org (v3.7+) Reported-by: Jes Sorensen <Jes.Sorensen@redhat.com> Tested-by: Jes Sorensen <Jes.Sorensen@redhat.com> Signed-off-by: NeilBrown <neilb@suse.de>
2013-03-20MD: Prevent sysfs operations on uninitialized kobjectsJonathan Brassow
MD: Prevent sysfs operations on uninitialized kobjects Device-mapper does not use sysfs; but when device-mapper is leveraging MD's RAID personalities, MD sometimes attempts to update sysfs. This patch adds checks for 'mddev-kobj.sd' in sysfs_[un]link_rdev to ensure it is about to operate on something valid. This patch also checks for 'mddev->kobj.sd' before calling 'sysfs_notify' in 'remove_and_add_spares'. Although 'sysfs_notify' already makes this check, doing so in 'remove_and_add_spares' prevents an additional mutex operation. Signed-off-by: Jonathan Brassow <jbrassow@redhat.com> Signed-off-by: NeilBrown <neilb@suse.de>
2013-03-20MD RAID5: Avoid accessing gendisk or queue structs when not availableJonathan Brassow
MD RAID5: Fix kernel oops when RAID4/5/6 is used via device-mapper Commit a9add5d (v3.8-rc1) added blktrace calls to the RAID4/5/6 driver. However, when device-mapper is used to create RAID4/5/6 arrays, the mddev->gendisk and mddev->queue fields are not setup. Therefore, calling things like trace_block_bio_remap will cause a kernel oops. This patch conditionalizes those calls on whether the proper fields exist to make the calls. (Device-mapper will call trace_block_bio_remap on its own.) This patch is suitable for the 3.8.y stable kernel. Cc: stable@vger.kernel.org (v3.8+) Signed-off-by: Jonathan Brassow <jbrassow@redhat.com> Signed-off-by: NeilBrown <neilb@suse.de>
2013-03-19Merge tag 'vfio-v3.9-rc4' of git://github.com/awilliam/linux-vfioLinus Torvalds
Pull vfio fix from Alex Williamson. * tag 'vfio-v3.9-rc4' of git://github.com/awilliam/linux-vfio: vfio: include <linux/slab.h> for kmalloc
2013-03-19Merge git://git.kernel.org/pub/scm/virt/kvm/kvmLinus Torvalds
Pull kvm fixes from Marcelo Tosatti. * git://git.kernel.org/pub/scm/virt/kvm/kvm: KVM: Fix bounds checking in ioapic indirect register reads (CVE-2013-1798) KVM: x86: Convert MSR_KVM_SYSTEM_TIME to use gfn_to_hva_cache functions (CVE-2013-1797) KVM: x86: fix for buffer overflow in handling of MSR_KVM_SYSTEM_TIME (CVE-2013-1796) KVM: x86: fix deadlock in clock-in-progress request handling KVM: allow host header to be included even for !CONFIG_KVM
2013-03-20md/raid5: schedule_construction should abort if nothing to do.NeilBrown
Since commit 1ed850f356a0a422013846b5291acff08815008b md/raid5: make sure to_read and to_write never go negative. It has been possible for handle_stripe_dirtying to be called when there isn't actually any work to do. It then calls schedule_reconstruction() which will set R5_LOCKED on the parity block(s) even when nothing else is happening. This then causes problems in do_release_stripe(). So add checks to schedule_reconstruction() so that if it doesn't find anything to do, it just aborts. This bug was introduced in v3.7, so the patch is suitable for -stable kernels since then. Cc: stable@vger.kernel.org (v3.7+) Reported-by: majianpeng <majianpeng@gmail.com> Signed-off-by: NeilBrown <neilb@suse.de>
2013-03-19target/pscsi: Reject cross page boundary case in pscsi_map_sgAsias He
We can only have one page of data in each sg element, so we can not cross a page boundary. Fail this case. The 'while (len > 0 && data_len > 0) {}' loop is not necessary. The loop can only be executed once. Signed-off-by: Asias He <asias@redhat.com> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2013-03-19target/file: Bump FD_MAX_SECTORS to 2048 to handle 1M sized I/OsNicholas Bellinger
This patch bumps the default FILEIO backend FD_MAX_SECTORS value from 1024 -> 2048 in order to allow block_size=512 to handle 1M sized I/Os. The current default rejects I/Os larger than 512K in sbc_parse_cdb(): [12015.915146] SCSI OP 2ah with too big sectors 1347 exceeds backend hw_max_sectors: 1024 [12015.977744] SCSI OP 2ah with too big sectors 2048 exceeds backend hw_max_sectors: 1024 This issue is present in >= v3.5 based kernels, introduced after the removal of se_task logic. Reported-by: Viljami Ilola <azmulx@netikka.fi> Cc: <stable@vger.kernel.org> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2013-03-20netfilter: remove unused "config IP_NF_QUEUE"Paul Bolle
Kconfig symbol IP_NF_QUEUE is unused since commit d16cf20e2f2f13411eece7f7fb72c17d141c4a84 ("netfilter: remove ip_queue support"). Let's remove it too. Signed-off-by: Paul Bolle <pebolle@tiscali.nl> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2013-03-20drm/i915: stop using GMBUS IRQs on Gen4 chipsJiri Kosina
Commit 28c70f162 ("drm/i915: use the gmbus irq for waits") switched to using GMBUS irqs instead of GPIO bit-banging for chipset generations 4 and above. It turns out though that on many systems this leads to spurious interrupts being generated, long after the register write to disable the IRQs has been issued. Typically this results in the spurious interrupt source getting disabled: [ 9.636345] irq 16: nobody cared (try booting with the "irqpoll" option) [ 9.637915] Pid: 4157, comm: ifup Tainted: GF 3.9.0-rc2-00341-g0863702 #422 [ 9.639484] Call Trace: [ 9.640731] <IRQ> [<ffffffff8109b40d>] __report_bad_irq+0x1d/0xc7 [ 9.640731] [<ffffffff8109b7db>] note_interrupt+0x15b/0x1e8 [ 9.640731] [<ffffffff810999f7>] handle_irq_event_percpu+0x1bf/0x214 [ 9.640731] [<ffffffff81099a88>] handle_irq_event+0x3c/0x5c [ 9.640731] [<ffffffff8109c139>] handle_fasteoi_irq+0x7a/0xb0 [ 9.640731] [<ffffffff8100400e>] handle_irq+0x1a/0x24 [ 9.640731] [<ffffffff81003d17>] do_IRQ+0x48/0xaf [ 9.640731] [<ffffffff8142f1ea>] common_interrupt+0x6a/0x6a [ 9.640731] <EOI> [<ffffffff8142f952>] ? system_call_fastpath+0x16/0x1b [ 9.640731] handlers: [ 9.640731] [<ffffffffa000d771>] usb_hcd_irq [usbcore] [ 9.640731] [<ffffffffa0306189>] yenta_interrupt [yenta_socket] [ 9.640731] Disabling IRQ #16 The really curious thing is now that irq 16 is _not_ the interrupt for the i915 driver when using MSI, but it _is_ the interrupt when not using MSI. So by all indications it seems like gmbus is able to generate a legacy (shared) interrupt in MSI mode on some configurations. I've tried to reproduce this and the differentiating thing seems to be that on unaffected systems no other device uses irq 16 (which seems to be the non-MSI intel gfx interrupt on all gm45). I have no idea how that even can happen. To avoid tempting this elephant into a rage, just disable gmbus interrupt support on gen 4. v2: Improve the commit message with exact details of what's going on. Also add a comment in the code to warn against this particular elephant in the room. v3: Move the comment explaing how gen4 blows up next to the definition of HAS_GMBUS_IRQ to keep the code-flow straight. Suggested by Chris Wilson. Signed-off-by: Jiri Kosina <jkosina@suse.cz> (v1) Acked-by: Chris Wilson <chris@chris-wilson.co.uk> References: https://lkml.org/lkml/2013/3/8/325 Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2013-03-19Merge tag 'for-linus-v3.9-rc4' of git://oss.sgi.com/xfs/xfsLinus Torvalds
Pull XFS fixes from Ben Myers: - Fix for a potential infinite loop which was introduced in commit 4d559a3bcb73 ("xfs: limit speculative prealloc near ENOSPC thresholds") - Fix for the return type of xfs_iomap_eof_prealloc_initial_size from commit a1e16c26660b ("xfs: limit speculative prealloc size on sparse files") - Fix for a failed buffer readahead causing subsequent callers to fail incorrectly * tag 'for-linus-v3.9-rc4' of git://oss.sgi.com/xfs/xfs: xfs: ensure we capture IO errors correctly xfs: fix xfs_iomap_eof_prealloc_initial_size type xfs: fix potential infinite loop in xfs_iomap_prealloc_size()
2013-03-19PCI: Use ROM images from firmware only if no other ROM source availableMatthew Garrett
Mantas Mikulėnas reported that his graphics hardware failed to initialise after commit f9a37be0f02a ("x86: Use PCI setup data"). The aim of this commit was to ensure that ROM images were available on some Apple systems that don't expose the GPU ROM via any other source. In this case, UEFI appears to have provided a broken ROM image that we were using even though there was a perfectly valid ROM available via other sources. The simplest way to handle this seems to be to just re-order pci_map_rom() and leave any firmare-supplied ROM to last. Signed-off-by: Matthew Garrett <matthew.garrett@nebula.com> Tested-by: Mantas Mikulėnas <grawity@gmail.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-03-19Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparcLinus Torvalds
Pull sparc fixes from David Miller: "Just some minor fixups, a sunsu console setup panic cure, and recognition of a Fujitsu sun4v cpu." * git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc: sparc: remove unused "config BITS" sparc: delete "if !ULTRA_HAS_POPULATION_COUNT" sparc64: correctly recognize SPARC64-X chips sparc,leon: fix GRPCI2 device0 PCI config space access sunsu: Fix panic in case of nonexistent port at "console=ttySY" cmdline option
2013-03-19Merge tag 'arm64-fixes' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/cmarinas/linux-aarch64 Pull arm64 fixes from Catalin Marinas: - Fix !SMP build error. - Fix padding computation in struct ucontext (no ABI change). - Minor clean-up after the signal patches (unused var). - Two old Kconfig options clean-up. * tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/cmarinas/linux-aarch64: arm64: Kconfig.debug: Remove unused CONFIG_DEBUG_ERRORS arm64: Do not select GENERIC_HARDIRQS_NO_DEPRECATED arm64: fix padding computation in struct ucontext arm64: Fix build error with !SMP arm64: Removed unused variable in compat_setup_rt_frame()
2013-03-19sparc: remove unused "config BITS"Paul Bolle
sparc's asm/module.h got removed in commit 786d35d45cc40b2a51a18f73e14e135d47fdced7 ("Make most arch asm/module.h files use asm-generic/module.h"). That removed the only two uses of this Kconfig symbol. So we can remove its entry too. > >From arch/sparc/Makefile: > ifeq ($(CONFIG_SPARC32),y) > [...] > > [...] > export BITS := 32 > [...] > > else > [...] > > [...] > export BITS := 64 > [...] > > So $(BITS) is set depending on whether CONFIG_SPARC32 is set or not. > Using $(BITS) in sparc's Makefiles is not using CONFIG_BITS. That > doesn't count as usage of "config BITS". Signed-off-by: Paul Bolle <pebolle@tiscali.nl> Acked-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-03-19Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netLinus Torvalds
Pull networking fixes from David Miller: 1) Fix ARM BPF JIT handling of negative 'k' values, from Chen Gang. 2) Insufficient space reserved for bridge netlink values, fix from Stephen Hemminger. 3) Some dst_neigh_lookup*() callers don't interpret error pointer correctly, fix from Zhouyi Zhou. 4) Fix transport match in SCTP active_path loops, from Xugeng Zhang. 5) Fix qeth driver handling of multi-order SKB frags, from Frank Blaschka. 6) fec driver is missing napi_disable() call, resulting in crashes on unload, from Georg Hofmann. 7) Don't try to handle PMTU events on a listening socket, fix from Eric Dumazet. 8) Fix timestamp location calculations in IP option processing, from David Ward. 9) FIB_TABLE_HASHSZ setting is not controlled by the correct kconfig tests, from Denis V Lunev. 10) Fix TX descriptor push handling in SFC driver, from Ben Hutchings. 11) Fix isdn/hisax and tulip/de4x5 kconfig dependencies, from Arnd Bergmann. 12) bnx2x statistics don't handle 4GB rollover correctly, fix from Maciej Żenczykowski. 13) Openvswitch bug fixes for vport del/new error reporting, missing genlmsg_end() call in netlink processing, and mis-parsing of LLC/SNAP ethernet types. From Rich Lane. 14) SKB pfmemalloc state should only be propagated from the head page of a compound page, fix from Pavel Emelyanov. 15) Fix link handling in tg3 driver for 5715 chips when autonegotation is disabled. From Nithin Sujir. 16) Fix inverted test of cpdma_check_free_tx_desc return value in davinci_emac driver, from Mugunthan V N. 17) vlan_depth is incorrectly calculated in skb_network_protocol(), from Li RongQing. 18) Fix probing of Gobi 1K devices in qmi_wwan driver, and fix NCM device mode backwards compat in cdc_ncm driver. From Bjørn Mork. * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (52 commits) inet: limit length of fragment queue hash table bucket lists qeth: Fix scatter-gather regression qeth: Fix invalid router settings handling qeth: delay feature trace tcp: dont handle MTU reduction on LISTEN socket bnx2x: fix occasional statistics off-by-4GB error vhost/net: fix heads usage of ubuf_info bridge: Add support for setting BR_ROOT_BLOCK flag. bnx2x: add missing napi deletion in error path drivers: net: ethernet: ti: davinci_emac: fix usage of cpdma_check_free_tx_desc() ethernet/tulip: DE4x5 needs VIRT_TO_BUS isdn: hisax: netjet requires VIRT_TO_BUS net: cdc_ncm, cdc_mbim: allow user to prefer NCM for backwards compatibility rtnetlink: Mask the rta_type when range checking Revert "ip_gre: make ipgre_tunnel_xmit() not parse network header as IP unconditionally" Fix dst_neigh_lookup/dst_neigh_lookup_skb return value handling bug smsc75xx: configuration help incorrectly mentions smsc95xx net: fec: fix missing napi_disable call net: fec: restart the FEC when PHY speed changes skb: Propagate pfmemalloc on skb from head page only ...
2013-03-19sparc: delete "if !ULTRA_HAS_POPULATION_COUNT"Paul Bolle
Commit 2d78d4beb64eb07d50665432867971c481192ebf ("[PATCH] bitops: sparc64: use generic bitops") made the default of GENERIC_HWEIGHT depend on !ULTRA_HAS_POPULATION_COUNT. But since there's no Kconfig symbol with that name, this always evaluates to true. Delete this dependency. Signed-off-by: Paul Bolle <pebolle@tiscali.nl> Acked-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-03-19KVM: Fix bounds checking in ioapic indirect register reads (CVE-2013-1798)Andy Honig
If the guest specifies a IOAPIC_REG_SELECT with an invalid value and follows that with a read of the IOAPIC_REG_WINDOW KVM does not properly validate that request. ioapic_read_indirect contains an ASSERT(redir_index < IOAPIC_NUM_PINS), but the ASSERT has no effect in non-debug builds. In recent kernels this allows a guest to cause a kernel oops by reading invalid memory. In older kernels (pre-3.3) this allows a guest to read from large ranges of host memory. Tested: tested against apic unit tests. Signed-off-by: Andrew Honig <ahonig@google.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2013-03-19KVM: x86: Convert MSR_KVM_SYSTEM_TIME to use gfn_to_hva_cache functions ↵Andy Honig
(CVE-2013-1797) There is a potential use after free issue with the handling of MSR_KVM_SYSTEM_TIME. If the guest specifies a GPA in a movable or removable memory such as frame buffers then KVM might continue to write to that address even after it's removed via KVM_SET_USER_MEMORY_REGION. KVM pins the page in memory so it's unlikely to cause an issue, but if the user space component re-purposes the memory previously used for the guest, then the guest will be able to corrupt that memory. Tested: Tested against kvmclock unit test Signed-off-by: Andrew Honig <ahonig@google.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2013-03-19KVM: x86: fix for buffer overflow in handling of MSR_KVM_SYSTEM_TIME ↵Andy Honig
(CVE-2013-1796) If the guest sets the GPA of the time_page so that the request to update the time straddles a page then KVM will write onto an incorrect page. The write is done byusing kmap atomic to get a pointer to the page for the time structure and then performing a memcpy to that page starting at an offset that the guest controls. Well behaved guests always provide a 32-byte aligned address, however a malicious guest could use this to corrupt host kernel memory. Tested: Tested against kvmclock unit test. Signed-off-by: Andrew Honig <ahonig@google.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2013-03-19xen-blkfront: remove frame list from blk_shadowRoger Pau Monne
We already have the frame (pfn of the grant page) stored inside struct grant, so there's no need to keep an aditional list of mapped frames for a specific request. This reduces memory usage in blkfront. Signed-off-by: Roger Pau Monné <roger.pau@citrix.com> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: xen-devel@lists.xen.org Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
2013-03-19xen-blkfront: pre-allocate pages for requestsRoger Pau Monne
This prevents us from having to call alloc_page while we are preparing the request. Since blkfront was calling alloc_page with a spinlock held we used GFP_ATOMIC, which can fail if we are requesting a lot of pages since it is using the emergency memory pools. Allocating all the pages at init prevents us from having to call alloc_page, thus preventing possible failures. Signed-off-by: Roger Pau Monné <roger.pau@citrix.com> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: xen-devel@lists.xen.org Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
2013-03-19xen-blkback: don't store dev_bus_addrRoger Pau Monne
dev_bus_addr returned in the grant ref map operation is the mfn of the passed page, there's no need to store it in the persistent grant entry, since we can always get it provided that we have the page. This reduces the memory overhead of persistent grants in blkback. While at it, rename the 'seg[i].buf' to be 'seg[i].offset' as it makes much more sense - as we use that value in bio_add_page which as the fourth argument expects the offset. We hadn't used the physical address as part of this at all. Signed-off-by: Roger Pau Monné <roger.pau@citrix.com> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: xen-devel@lists.xen.org [v1: s/buf/offset/] Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
2013-03-19arm64: Kconfig.debug: Remove unused CONFIG_DEBUG_ERRORSPaul Bolle
The Kconfig entry for DEBUG_ERRORS is a verbatim copy of the former arm entry for that symbol. It got removed in v2.6.39 because it wasn't actually used anywhere. There are still no users of DEBUG_ERRORS so remove this entry too. Signed-off-by: Paul Bolle <pebolle@tiscali.nl> [catalin.marinas@arm.com: removed option from defconfig] Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2013-03-19arm64: Do not select GENERIC_HARDIRQS_NO_DEPRECATEDPaul Bolle
Config option GENERIC_HARDIRQS_NO_DEPRECATED was removed in commit 78c89825649a9a5ed526c507603196f467d781a5 ("genirq: Remove the now obsolete config options and select statements"), but the select was accidentally reintroduced in commit 8c2c3df31e3b87cb5348e48776c366ebd1dc5a7a ("arm64: Build infrastructure"). Signed-off-by: Paul Bolle <pebolle@tiscali.nl> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2013-03-19inet: limit length of fragment queue hash table bucket listsHannes Frederic Sowa
This patch introduces a constant limit of the fragment queue hash table bucket list lengths. Currently the limit 128 is choosen somewhat arbitrary and just ensures that we can fill up the fragment cache with empty packets up to the default ip_frag_high_thresh limits. It should just protect from list iteration eating considerable amounts of cpu. If we reach the maximum length in one hash bucket a warning is printed. This is implemented on the caller side of inet_frag_find to distinguish between the different users of inet_fragment.c. I dropped the out of memory warning in the ipv4 fragment lookup path, because we already get a warning by the slab allocator. Cc: Eric Dumazet <eric.dumazet@gmail.com> Cc: Jesper Dangaard Brouer <jbrouer@redhat.com> Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Acked-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-03-19xen-blkfront: switch from llist to listRoger Pau Monne
The git commit f84adf4921ae3115502f44ff467b04bf2f88cf04 (xen-blkfront: drop the use of llist_for_each_entry_safe) was a stop-gate to fix a GCC4.1 bug. The appropiate way is to actually use an list instead of using an llist. As such this patch replaces the usage of llist with an list. Since we always manipulate the list while holding the io_lock, there's no need for additional locking (llist used previously is safe to use concurrently without additional locking). Signed-off-by: Roger Pau Monné <roger.pau@citrix.com> CC: stable@vger.kernel.org [v1: Redid the git commit description] Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
2013-03-19qeth: Fix scatter-gather regressionFrank Blaschka
This patch fixes a scatter-gather regression introduced with commit 5640f768 net: use a per task frag allocator Now the qeth driver can cope with bigger framents and split a fragment in sub framents if required. Signed-off-by: Frank Blaschka <blaschka@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-03-19qeth: Fix invalid router settings handlingStefan Raspl
Give a bad return code when specifying a router setting that is either invalid or not support on the respective device type. In addition, fall back the previous setting instead of silently switching back to 'no routing'. Signed-off-by: Stefan Raspl <raspl@linux.vnet.ibm.com> Signed-off-by: Frank Blaschka <blaschka@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-03-19qeth: delay feature traceStefan Raspl
Delay tracing of the card features until the optional commands have been enabled. Signed-off-by: Stefan Raspl <raspl@linux.vnet.ibm.com> Signed-off-by: Frank Blaschka <blaschka@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-03-19xen-blkback: fix foreach_grant_safe to handle empty listsRoger Pau Monne
We may use foreach_grant_safe in the future with empty lists, so make sure we can handle them. Signed-off-by: Roger Pau Monné <roger.pau@citrix.com> Cc: xen-devel@lists.xen.org Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
2013-03-19ipvs: remove extra rcu lockJulian Anastasov
In 3.7 we added code that uses ipv4_update_pmtu but after commit c5ae7d4192 (ipv4: must use rcu protection while calling fib_lookup) the RCU lock is not needed. Signed-off-by: Julian Anastasov <ja@ssi.bg> Signed-off-by: Simon Horman <horms@verge.net.au>
2013-03-19ipvs: add backup_only flag to avoid loopsJulian Anastasov
Dmitry Akindinov is reporting for a problem where SYNs are looping between the master and backup server when the backup server is used as real server in DR mode and has IPVS rules to function as director. Even when the backup function is enabled we continue to forward traffic and schedule new connections when the current master is using the backup server as real server. While this is not a problem for NAT, for DR and TUN method the backup server can not determine if a request comes from client or from director. To avoid such loops add new sysctl flag backup_only. It can be needed for DR/TUN setups that do not need backup and director function at the same time. When the backup function is enabled we stop any forwarding and pass the traffic to the local stack (real server mode). The flag disables the director function when the backup function is enabled. For setups that enable backup function for some virtual services and director function for other virtual services there should be another more complex solution to support DR/TUN mode, may be to assign per-virtual service syncid value, so that we can differentiate the requests. Reported-by: Dmitry Akindinov <dimak@stalker.com> Tested-by: German Myzovsky <lawyer@sipnet.ru> Signed-off-by: Julian Anastasov <ja@ssi.bg> Signed-off-by: Simon Horman <horms@verge.net.au>
2013-03-19arc: fix dma_address assignment during dma_map_sg()Pierrick Hascoet
Signed-off-by: Pierrick Hascoet <pierrick.hascoet@abilis.com> Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2013-03-19ARM: imx: add dependency check for DEBUG_IMX_UART_PORTShawn Guo
While adding i.MX DEBUG_LL selection, commit f8c95fe (ARM: imx: support DEBUG_LL uart port selection for all i.MX SoCs) leaves Kconfig symbol DEBUG_IMX_UART_PORT there without any dependency check. This results in that everyone gets the symbol in their config, which is someting undesirable. Add "depends on ARCH_MXC" for the symbol to prevent that. Reported-by: Karl Beldan <karl.beldan@gmail.com> Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
2013-03-19drm/nv50/kms: prevent lockdep false-positive in page flipping pathBen Skeggs
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2013-03-19drm/nouveau/core: fix return value of nouveau_object_del()Ben Skeggs
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2013-03-19ARM: video: mxs: Fix mxsfb misconfiguring VDCTRL0Marek Vasut
The issue fixed by this patch manifests only then using X11 with mxsfb driver. The X11 will display either shifted image or otherwise distorted image on the LCD. The problem is that the X11 tries to reconfigure the framebuffer and along the way calls fb_ops.fb_set_par() with X11's desired configuration values. The field of particular interest is fb_info->var.sync which contains non-standard values if configured by kernel. These are either FB_SYNC_DATA_ENABLE_HIGH_ACT, FB_SYNC_DOTCLK_FAILING_ACT or both, depending on the platform configuration. Both of these values are defined in the include/linux/mxsfb.h file. The driver interprets these values and configures the LCD controller accordingly. Yet X11 only has access to the standard values for this field defined in include/uapi/linux/fb.h and thus, unlike kernel, omits these special values. This results in distorted image on the LCD. This patch moves these non-standard values into new field of the mxsfb_platform_data structure so the driver can in turn check this field instead of the video mode field for these specific portions. Moreover, this patch prefixes these values with MXSFB_SYNC_ prefix instead of FB_SYNC_ prefix to prevent confusion of subsequent users. Signed-off-by: Marek Vasut <marex@denx.de> Cc: Fabio Estevam <fabio.estevam@freescale.com> Cc: Linux ARM <linux-arm-kernel@lists.infradead.org> Cc: Linux FBDEV <linux-fbdev@vger.kernel.org> Cc: Lothar Waßmann <LW@karo-electronics.de> Cc: Sascha Hauer <kernel@pengutronix.de> Tested-by: Fabio Estevam <fabio.estevam@freescale.com> Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
2013-03-18Merge branch 'hwmon-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging Pull hwmon fixes from Jean Delvare. * 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging: hwmon: (lm75) Fix tcn75 prefix hwmon: (lm75.h) Update header inclusion MAINTAINERS: Remove Mark M. Hoffman
2013-03-18sgy-cts1000: Remove __dev* attributesBen Collins
Somehow the driver snuck in with these still in it. Signed-off-by: Ben Collins <ben.c@servergy.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-03-18Merge branch 'for-3.9-fixes' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq Pull workqueue fix from Tejun Heo: "Lai's patch to fix highly unlikely but still possible workqueue stall during CPU hotunplug." * 'for-3.9-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq: workqueue: fix possible pool stall bug in wq_unbind_fn()
2013-03-19ipvs: fix sctp chunk length orderJulian Anastasov
Fix wrong but non-fatal access to chunk length. sch->length should be in network order, next chunk should be aligned to 4 bytes. Problem noticed in sparse output. Signed-off-by: Julian Anastasov <ja@ssi.bg> Signed-off-by: Simon Horman <horms@verge.net.au>
2013-03-18[media] ir: IR_RX51 only works on OMAP2Arnd Bergmann
This driver can be enabled on OMAP1 at the moment, which breaks allyesconfig for that platform. Let's mark it OMAP2PLUS-only in Kconfig, since that is the only thing it builds on. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Timo Kokkonen <timo.t.kokkonen@iki.fi> Acked-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-03-18Merge tag 'v3.9-rc3' into v4l_for_linusMauro Carvalho Chehab
Linux 3.9-rc3 * tag 'v3.9-rc3': (11231 commits) Linux 3.9-rc3 perf,x86: fix link failure for non-Intel configs perf,x86: fix wrmsr_on_cpu() warning on suspend/resume Btrfs: fix warning of free_extent_map perf,x86: fix kernel crash with PEBS/BTS after suspend/resume ALSA: hda - Fix missing EAPD/GPIO setup for Cirrus codecs sound: sequencer: cap array index in seq_chn_common_event() mfd: twl4030-madc: Remove __exit_p annotation ALSA: hda/ca0132 - Remove extra setting of dsp_state. ALSA: hda/ca0132 - Check download state of DSP. ALSA: hda/ca0132 - Check if dspload_image succeeded. mm/fremap.c: fix possible oops on error path list: Fix double fetch of pointer in hlist_entry_safe() Btrfs: fix warning when creating snapshots Btrfs: return as soon as possible when edquot happens Btrfs: return EIO if we have extent tree corruption btrfs: use rcu_barrier() to wait for bdev puts at unmount Btrfs: remove btrfs_try_spin_lock Btrfs: get better concurrency for snapshot-aware defrag work hwmon: (pmbus/ltc2978) Fix temperature reporting ...