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2012-03-28vfs: fix d_ancestor() case in d_materialize_uniqueMichel Lespinasse1-1/+2
In d_materialise_unique() there are 3 subcases to the 'aliased dentry' case; in two subcases the inode i_lock is properly released but this does not occur in the -ELOOP subcase. This seems to have been introduced by commit 1836750115f2 ("fix loop checks in d_materialise_unique()"). Signed-off-by: Michel Lespinasse <walken@google.com> Cc: stable@vger.kernel.org # v3.0+ [ Added a comment, and moved the unlock to where we generate the -ELOOP, which seems to be more natural. You probably can't actually trigger this without a buggy network file server - d_materialize_unique() is for finding aliases on non-local filesystems, and the d_ancestor() case is for a hardlinked directory loop. But we should be robust in the case of such buggy servers anyway. ] Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-03-27net: fix a potential rcu_read_lock() imbalance in rt6_fill_node()Eric Dumazet1-2/+6
Commit f2c31e32b378 (net: fix NULL dereferences in check_peer_redir() ) added a regression in rt6_fill_node(), leading to rcu_read_lock() imbalance. Thats because NLA_PUT() can make a jump to nla_put_failure label. Fix this by using nla_put() Many thanks to Ben Greear for his help Reported-by: Ben Greear <greearb@candelatech.com> Reported-by: Dave Jones <davej@redhat.com> Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Tested-by: Ben Greear <greearb@candelatech.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-03-25ARM: 7343/1: sa11x0: convert to sparse IRQRussell King5-12/+13
Now that Neponset, UCB1x00 and SA1111 are all converted to use the IRQ allocation interfaces, we can enable sparse IRQ support for SA11x0 platforms.
2012-03-25ARM: 7342/2: sa1100: prepare for sparse irq conversionRob Herring21-11/+40
In preparation to convert SA1100 to sparse irq, set .nr_irqs for each machine and explicitly include mach/irqs.h as needed. Signed-off-by: Rob Herring <rob.herring@calxeda.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-03-25ARM: 7341/1: input: prepare jornada720 keyboard and ts for sa11x0 sparse irqRob Herring2-0/+2
In preparation for sa11x0 sparse irq conversion, explicitly include mach/irqs.h as it will not be included for sparse irq. Signed-off-by: Rob Herring <rob.herring@calxeda.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-03-25ARM: 7340/1: rtc: sa1100: include mach/irqs.h instead of asm/irq.hRob Herring1-1/+1
Since asm/irq.h may not include mach/irqs.h, include mach/irqs.h directly. Signed-off-by: Rob Herring <rob.herring@calxeda.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-03-25ARM: sa11x0: remove unused DMA controller definitionsRussell King2-218/+3
Remove the new unused DMA controller definitions from mach/SA-1100.h. These are now private to the SA-11x0 DMA engine driver and contained within the driver. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-03-25ARM: sa11x0: remove old SoC private DMA driverRussell King3-466/+1
Now that all users are converted over to using the DMA engine API, we can get rid of the old platform dependent DMA driver. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-03-25net: add a truesize parameter to skb_add_rx_frag()Eric Dumazet7-9/+13
skb_add_rx_frag() API is misleading. Network skbs built with this helper can use uncharged kernel memory and eventually stress/crash machine in OOM. Add a 'truesize' parameter and then fix drivers in followup patches. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Cc: Wey-Yi Guy <wey-yi.w.guy@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-03-25gianfar: Fix possible overrun and simplify interrupt name field creationJoe Perches2-33/+8
Space allocated for int_name_<foo> is insufficient for maximal device name, expand it. Code to create int_name_<foo> is obscure, simplify it by using sprintf. Found by looking for unnecessary \ line continuations. Signed-off-by: Joe Perches <joe@perches.com> Tested-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-03-25USB: qmi_wwan: Add ZTE (Vodafone) K3570-Z and K3571-Z net interfacesAndrew Bird (Sphere Systems)1-0/+18
Now that we have the beginnings of an OSS method to use the network interfaces on these USB broadband modems, add the ZTE manufactured Vodafone items to the whitelist Signed-off-by: Andrew Bird <ajb@spheresystems.co.uk> Acked-by: Bjørn Mork <bjorn@mork.no> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-03-25USB: option: Ignore ZTE (Vodafone) K3570/71 net interfacesAndrew Bird (Sphere Systems)1-2/+4
These interfaces need to be handled by QMI/WWAN driver Signed-off-by: Andrew Bird <ajb@spheresystems.co.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-03-25USB: qmi_wwan: Add ZTE (Vodafone) K3565-Z and K4505-Z net interfacesAndrew Bird (Sphere Systems)1-0/+18
Now that we have the beginnings of an OSS method to use the network interfaces on these USB broadband modems, add the ZTE manufactured Vodafone items to the whitelist Signed-off-by: Andrew Bird <ajb@spheresystems.co.uk> Acked-by: Bjørn Mork <bjorn@mork.no> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-03-25um: Update defconfigRichard Weinberger1-184/+471
Enable ext4, cgroups and devtmpfs. Signed-off-by: Richard Weinberger <richard@nod.at>
2012-03-25um: Switch to large mcmodel on x86_64Richard Weinberger1-0/+1
x86_64 UML is unable to load modules if more than 504MiB of memory are used. This happens because on x86_64 the UML process has a quite high start address (typically around 0x6000000). If UML's memory is larger than 504MiB VMALLOC_START happens to be after 0x8000000. This is no problem unless one loads a module which was built with R_X86_64_32S relocations. Symbols with a location > 0x8000000 cannot be used with R_X86_64_32S To deal with this x86_64 UML has to be compiled with -mcmodel=large such that no R_X86_64_32S relocations are used. Signed-off-by: Richard Weinberger <richard@nod.at> Reported-by: 전하늘 <allskyee@gmail.com>
2012-03-25MTD: Relax dependenciesRichard Weinberger5-1/+6
CONFIG_GENERIC_IO is just enough for the basic MTD stuff. Signed-off-by: Richard Weinberger <richard@nod.at> Acked-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2012-03-25um: Wire CONFIG_GENERIC_IO upRichard Weinberger1-0/+1
UML has no io memory but implements everything defined in generic-asm/io.h. Signed-off-by: Richard Weinberger <richard@nod.at>
2012-03-25um: Serve io_remap_pfn_range()Richard Weinberger1-0/+2
At some places io_remap_pfn_range() is needed. UML has to serve it like all other archs do. Signed-off-by: Richard Weinberger <richard@nod.at>
2012-03-25Introduce CONFIG_GENERIC_IORichard Weinberger1-0/+5
There are situations where CONFIG_HAS_IOMEM is too restrictive. For example CONFIG_MTD_NAND_NANDSIM depends on CONFIG_HAS_IOMEM but it works perfectly fine if an architecture without io memory just includes asm-generic/io.h or implements everything defined in it. UML is such a corner case. Signed-off-by: Richard Weinberger <richard@nod.at>
2012-03-25um: allow SUBARCH=x86Al Viro1-2/+2
nicked from patch by dwmw2 back in July Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at>
2012-03-25um: most of the SUBARCH uses can be killedAl Viro3-7/+3
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> [richard@nod.at: Re-export SUBARCH in arch/um/Makefile] Signed-off-by: Richard Weinberger <richard@nod.at>
2012-03-25um: deadlock in line_write_interrupt()Al Viro1-0/+1
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at>
2012-03-25um: don't bother trying to rebuild CHECKFLAGS for USER_OBJSAl Viro1-4/+3
... just strip NOSTDINC_FLAGS out of it for those Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at>
2012-03-25um: use the right ifdef around exports in user_syms.cAl Viro2-3/+1
... the same one that controls whether elf_aux.o is included into the build, bringing the vsyscall_e... into it. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at>
2012-03-25um: a bunch of headers can be killed by using generic-yAl Viro7-124/+1
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at>
2012-03-25um: ptrace-generic.h doesn't need user.hAl Viro1-1/+0
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at>
2012-03-25um: kill HOST_TASK_PIDAl Viro4-8/+4
just provide get_current_pid() to the userland side of things instead of get_current() + manual poking in its results Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at>
2012-03-25um: remove pointless include of asm/fixmap.h from asm/pgtable.hAl Viro1-2/+1
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at>
2012-03-25um: asm-offsets.h might as well come from underlying arch...Al Viro1-1/+0
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at>
2012-03-25um: merge processor_{32,64}.h a bit...Al Viro3-20/+10
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at>
2012-03-25um: switch close_chan() to struct lineAl Viro3-9/+11
... and switch chan_interrupt() to directly calling close_one_chan(), so we can lose delay_free_irq argument of close_chan() as well. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at>
2012-03-25um: race fix: initialize delayed_work *before* registering IRQAl Viro3-18/+15
... since chan_interrupt() might schedule it if there's too much incoming data. Kill task argument of chan_interrupt(), while we are at it - it's always &line->task. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at>
2012-03-25um: line->have_irq is never checked...Al Viro2-2/+0
looks like a half-arsed duplicate of line->enabled Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at>
2012-03-25um: chan_init_pri is dead nowAl Viro1-2/+0
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at>
2012-03-25um: switch users of ->chan_list to ->chan_{in,out} (easy cases)Al Viro5-128/+88
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at>
2012-03-25um: sorting out the chan mess, part 1Al Viro2-0/+5
put references to in and out chans associated with line into explicit struct chan * fields in it. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at>
2012-03-25um: finally kill ->init_str leaksAl Viro1-1/+3
now we can do that... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at>
2012-03-25um: get rid of lines_init()Al Viro4-46/+33
move config-independent parts of initialization into register_lines(), call setup_one_line() after it instead of abusing ->init_str. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at>
2012-03-25um: switch line.c tty drivers to dynamic device creationAl Viro4-42/+40
Current code doesn't update the symlinks in /sys/dev/char when we add/remove tty lines. Fixing that allows to stop messing with ->valid before the driver registration, which is a Good Thing(tm) - we shouldn't have it set before we really have the things set up and ready for line_open(). We need tty_driver available to call tty_{un,}register_device(), so we just stash a reference to it into struct line_driver. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at>
2012-03-25um: fix races between line_open() and line_config()Al Viro2-28/+29
Pull parse_chan_pair() call into setup_one_line(), under the mutex. We really don't want open() to succeed before parse_chan_pair() had been done (or after it has failed, BTW). We also want "remove con<n>" to free irqs, etc., same as "config con<n>=none". Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at>
2012-03-25um: convert count_lock to mutex, fix a race in line_open()Al Viro4-20/+12
If two processes are opening the same line, the second to get into line_open() will decide that it doesn't need to do anything (correctly) or wait for anything. The latter, unfortunately, is incorrect - the first opener might not be through yet. We need to have exclusion covering the entire line_init(), including the blocking parts. Moreover, the next patch will need to widen the exclusion on mconsole side of things, also including the blocking bits, so let's just convert that sucker to mutex... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at>
2012-03-25um: get rid of the init_prio messAl Viro4-74/+68
make line_setup() act on a separate array of conf strings + default conf, have lines array initialized explicitly by that data, bury LINE_INIT() macro from hell. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at>
2012-03-25um: switch line_config() to setup_one_line()Al Viro1-6/+16
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at>
2012-03-25um: switch line_remove() to setup_one_line()Al Viro1-8/+5
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at>
2012-03-25um: auxvec.h is never usedAl Viro1-4/+0
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at>
2012-03-25um: clean up the includes in ubdAl Viro3-34/+18
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at>
2012-03-25uml/hostfs: Propagate dirent.d_type to filldir()Geert Uytterhoeven3-4/+8
Currently the (optional) d_type member in struct dirent is always DT_UNKNOWN on hostfs, which may confuse buggy software using readdir(). Make sure to propagate its value from the underlying filesystem if it's available there. Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Richard Weinberger <richard@nod.at>
2012-03-25um: irq: Remove IRQF_DISABLEDYong Zhang9-13/+13
Since commit [e58aa3d2: genirq: Run irq handlers with interrupts disabled], We run all interrupt handlers with interrupts disabled and we even check and yell when an interrupt handler returns with interrupts enabled (see commit [b738a50a: genirq: Warn when handler enables interrupts]). So now this flag is a NOOP and can be removed. Signed-off-by: Yong Zhang <yong.zhang0@gmail.com> Signed-off-by: Richard Weinberger <richard@nod.at>
2012-03-24Fix potential endless loop in kswapd when compaction is not enabledRik van Riel1-1/+2
We should only test compaction_suitable if the kernel is built with CONFIG_COMPACTION, otherwise the stub compaction_suitable function will always return COMPACT_SKIPPED and send kswapd into an infinite loop. Reported-by: Anton Blanchard <anton@samba.org> Signed-off-by: Rik van Riel <riel@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-03-24xen/acpi: Fix Kconfig dependency on CPU_FREQKonrad Rzeszutek Wilk1-1/+1
The functions: "acpi_processor_*" sound like they depend on CONFIG_ACPI_PROCESSOR but in reality they are exposed when CONFIG_CPU_FREQ=[y|m]. As such update the Kconfig to have this dependency and fix compile issues: ERROR: "acpi_processor_unregister_performance" [drivers/xen/xen-acpi-processor.ko] undefined! ERROR: "acpi_processor_notify_smm" [drivers/xen/xen-acpi-processor.ko] undefined! ERROR: "acpi_processor_register_performance" [drivers/xen/xen-acpi-processor.ko] undefined! ERROR: "acpi_processor_preregister_performance" [drivers/xen/xen-acpi-processor.ko] undefined! Note: We still need the CONFIG_ACPI Reported-by: Randy Dunlap <rdunlap@xenotime.net> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
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