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2009-01-30block: add bio_rw_flagged() for testing bio->bi_rwJens Axboe
The existing functions for checking bio->bi_rw are badly named. So lets mirror what we do for bio->bi_flags testing, use a properly named function so that it's immediately obvious what is being tested. Maintain compatability names for the old macros, eventually we'll get rid of these. Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2009-01-30block: seperate bio/request unplug and sync bitsJens Axboe
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2009-01-30Fix small typo in bio.h's documentationAlberto Bertogli
Signed-off-by: Alberto Bertogli <albertito@blitiri.com.ar> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2009-01-30block: Don't verify integrity metadata on read errorMartin K. Petersen
If we get an I/O error on a read request there is no point in doing a verify pass on the integrity buffer. Adjust the completion path accordingly. Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2009-01-29Documentation: move DMA-mapping.txt to Doc/PCI/Randy Dunlap
Move DMA-mapping.txt to Documentation/PCI/. DMA-mapping.txt was supposed to be moved from Documentation/ to Documentation/PCI/. The 00-INDEX files in those two directories were updated, along with a few other text files, but the file itself somehow escaped being moved, so move it and update more text files and source files with its new location. Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Acked-by: Greg Kroah-Hartman <gregkh@suse.de> cc: Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-29Merge branch 'linux-next' of git://git.infradead.org/ubi-2.6Linus Torvalds
* 'linux-next' of git://git.infradead.org/ubi-2.6: UBI: allow direct user-space I/O UBI: fix resource de-allocation UBI: remove unused variable UBI: use nicer 64-bit math UBI: add ioctl compatibility UBI: constify file operations UBI: allow all ioctls UBI: remove unnecessry header inclusion UBI: improve ioctl commentaries UBI: add ioctl for is_mapped operation UBI: add ioctl for unmap operation UBI: add ioctl for map operation
2009-01-29epoll: drop max_user_instances and rely only on max_user_watchesDavide Libenzi
Linus suggested to put limits where the money is, and max_user_watches already does that w/out the need of max_user_instances. That has the advantage to mitigate the potential DoS while allowing pretty generous default behavior. Allowing top 4% of low memory (per user) to be allocated in epoll watches, we have: LOMEM MAX_WATCHES (per user) 512MB ~178000 1GB ~356000 2GB ~712000 A box with 512MB of lomem, will meet some challenge in hitting 180K watches, socket buffers math teaches us. No more max_user_instances limits then. Signed-off-by: Davide Libenzi <davidel@xmailserver.org> Cc: Willy Tarreau <w@1wt.eu> Cc: Michael Kerrisk <mtk.manpages@googlemail.com> Cc: Bron Gondwana <brong@fastmail.fm> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-29cgroups: add cpu_relax() calls in css_tryget() and cgroup_clear_css_refs()Paul Menage
css_tryget() and cgroup_clear_css_refs() contain polling loops; these loops should have cpu_relax calls in them to reduce cross-cache traffic. Signed-off-by: Paul Menage <menage@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-29alpha: use syscall wrappersIvan Kokshaysky
Convert OSF syscalls and add alpha specific SYSCALL_ALIAS() macro. Signed-off-by: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Richard Henderson <rth@twiddle.net> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-29kprobes: fix module compilation error with CONFIG_KPROBES=nMasami Hiramatsu
Define kprobes related data structures even if CONFIG_KPROBES is not set. This fixes compilation errors which occur if CONFIG_KPROBES is not set, in kprobe using modules. [akpm@linux-foundation.org: fix build for non-kprobes-supporting architectures] Reviewed-by: Ananth N Mavinakayanahalli <ananth@in.ibm.com> Signed-off-by: Masami Hiramatsu <mhiramat@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-28dmi: Fix build breakageKumar Gala
Commit d7b1956fed33d30c4815e848fd7a143722916868 ("DMI: Introduce dmi_first_match to make the interface more flexible") introduced compile errors like the following when !CONFIG_DMI drivers/ata/sata_sil.c: In function 'sil_broken_system_poweroff': drivers/ata/sata_sil.c:713: error: implicit declaration of function 'dmi_first_match' drivers/ata/sata_sil.c:713: warning: initialization makes pointer from integer without a cast We just need a dummy version of dmi_first_match() to fix this all up. Signed-off-by: Kumar Gala <galak@kernel.crashing.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-28drm: Rip out the racy, unused vblank signal code.Eric Anholt
Schedule a vblank signal, kill the process, and we'll go walking over freed memory. Given that no open-source userland exists using this, nor have I ever heard of a consumer, just let this code die. Signed-off-by: Eric Anholt <eric@anholt.net> Requested-by: Linus Torvalds <torvalds@linux-foundation.org> Acked-by: Dave Airlie <airlied@linux.ie> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-27Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6: (36 commits) USB: Driver for Freescale QUICC Engine USB Host Controller USB: option: add QUANTA HSDPA Data Card device ids USB: storage: Add another unusual_dev for off-by-one bug USB: unusual_dev: usb-storage needs to ignore a device USB: GADGET: fix !x & y USB: new id for ti_usb_3410_5052 driver USB: cdc-acm: Add another conexant modem to the quirks USB: 'option' driver - onda device MT503HS has wrong id USB: Remove ZTE modem from unusual_devices USB: storage: support of Dane-Elec MediaTouch USB device USB: usbmon: Implement compat_ioctl USB: add kernel-doc for wusb_dev in struct usb_device USB: ftdi_sio driver support of bar code scanner from Diebold USB: ftdi_sio: added Alti-2 VID and Neptune 3 PID USB: cp2101 device USB: usblp.c: add USBLP_QUIRK_BIDIR to Brother HL-1440 USB: remove vernier labpro from ldusb USB: CDC-ACM quirk for MTK GPS USB: cdc-acm: support some gps data loggers USB: composite: Fix bug: low byte of w_index is the usb interface number not the whole 2 bytes of w_index ...
2009-01-27USB: add kernel-doc for wusb_dev in struct usb_deviceInaky Perez-Gonzalez
Reported by Randy Dunlap from a warning on the v2.6.29 merge window. Signed-off-by: Inaky Perez-Gonzalez <inaky@linux.intel.com> Cc: David Vrabel <david.vrabel@csr.com> Cc: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-01-27Fix longstanding "error: storage size of '__mod_dmi_device_table' isn't known"Alexey Dobriyan
gcc 3.4.6 doesn't like MODULE_DEVICE_TABLE(dmi, x) expansion enough to error out. Shut it up in a most simple way. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-27Merge branch 'hibern_fixes' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev * 'hibern_fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev: SATA PIIX: Blacklist system that spins off disks during ACPI power off SATA Sil: Blacklist system that spins off disks during ACPI power off SATA AHCI: Blacklist system that spins off disks during ACPI power off SATA: Blacklisting of systems that spin off disks during ACPI power off DMI: Introduce dmi_first_match to make the interface more flexible Hibernation: Introduce system_entering_hibernation
2009-01-27Merge branch 'upstream-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev * 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev: pata-rb532-cf: remove set_irq_type from finish_io [libata] pata_via: support VX855, future chips whose IDE controller use 0x0571 sata_mv: no longer experimental (v2) sata_mv: msi masking fix (v2) sata_mv: Properly initialize main irq mask sata_mv: remove bogus nsect restriction sata_mv: don't read hc_irq_cause sata_mv: fix 8-port timeouts on 508x/6081 chips sata_nv: fix MCP5x reset sata_nv: rename nv_nf2_hardreset() libata: set NODEV_HINT for 0x7f status libata-sff: fix incorrect EH message
2009-01-27UBI: allow direct user-space I/OSidney Amani
Introduce a new ioctl UBI_IOCSETPROP to set properties on a volume. Also add the first property: UBI_PROP_DIRECT_WRITE, this property is used to set the ability to use direct writes in userspace Signed-off-by: Sidney Amani <seed@uffs.org> Signed-off-by: Corentin Chary <corentincj@iksaif.net> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2009-01-27SATA: Blacklisting of systems that spin off disks during ACPI power offRafael J. Wysocki
Introduce new libata flags ATA_FLAG_NO_POWEROFF_SPINDOWN and ATA_FLAG_NO_HIBERNATE_SPINDOWN that, if set, will prevent disks from being spun off during system power off and hibernation, respectively (to handle the hibernation case we need the new system state SYSTEM_HIBERNATE_ENTER that can be checked against by libata, in analogy with SYSTEM_POWER_OFF). Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2009-01-27DMI: Introduce dmi_first_match to make the interface more flexibleRafael J. Wysocki
Some notebooks from HP have the problem that their BIOSes attempt to spin down hard drives before entering ACPI system states S4 and S5. This leads to a yo-yo effect during system power-off shutdown and the last phase of hibernation when the disk is first spun down by the kernel and then almost immediately turned on and off by the BIOS. This, in turn, may result in shortening the disk's life times. To prevent this from happening we can blacklist the affected systems using DMI information. However, only the on-board controlles should be blacklisted and their PCI slot numbers can be used for this purpose. Unfortunately the existing interface for checking DMI information of the system is not very convenient for this purpose, because to use it, we would have to define special callback functions or create a separate struct dmi_system_id table for each blacklisted system. To overcome this difficulty introduce a new function dmi_first_match() returning a pointer to the first entry in an array of struct dmi_system_id elements that matches the system DMI information. Then, we can use this pointer to access the entry's .driver_data field containing the additional information, such as the PCI slot number, allowing us to do the desired blacklisting. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2009-01-27Hibernation: Introduce system_entering_hibernationRafael J. Wysocki
Introduce boolean function system_entering_hibernation() returning 'true' during the last phase of hibernation, in which devices are being put into low power states and the sleep state (for example, ACPI S4) is finally entered. Some device drivers need such a function to check if the system is in the final phase of hibernation. In particular, some SATA drivers are going to use it for blacklisting systems in which the disks should not be spun down during the last phase of hibernation (the BIOS will do that anyway). Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2009-01-26Fix "multiple definition of `debugfs_create_size_t'"Linus Torvalds
Introduced by 8adb711f3668b034e7b956fac951ed08b53e0d55 ("debugfs: introduce stub for debugfs_create_size_t() when DEBUG_FS=n") and due to a simple missing "static inline". Reported-and-tested-by: Jeff Chua <jeff.chua.linux@gmail.com> Acked-by: Greg KH <gregkh@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-26Merge branch 'i2c-for-linus' of git://jdelvare.pck.nerim.net/jdelvare-2.6Linus Torvalds
* 'i2c-for-linus' of git://jdelvare.pck.nerim.net/jdelvare-2.6: i2c: Warn on deprecated binding model use eeprom: More consistent symbol names eeprom: Move 93cx6 eeprom driver to /drivers/misc/eeprom spi: Move at25 (for SPI eeproms) to /drivers/misc/eeprom i2c: Move old eeprom driver to /drivers/misc/eeprom i2c: Move at24 to drivers/misc/eeprom i2c: Quilt tree has moved i2c: Delete many unused adapter IDs i2c: Delete 10 unused driver IDs
2009-01-26Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (92 commits) gianfar: Revive VLAN support vlan: Export symbols as non GPL symbols. bnx2x: tx_has_work should not wait for FW netxen: reduce memory footprint netxen: fix vlan tso/checksum offload net: Fix linux/if_frad.h's suitability for userspace. net: Move config NET_NS to from net/Kconfig to init/Kconfig isdn: Fix missing ifdef in isdn_ppp networking: document "nc" in addition to "netcat" in netconsole.txt e1000e: workaround hw errata af_key: initialize xfrm encap_oa virtio_net: Fix MAX_PACKET_LEN to support 802.1Q VLANs lcs: fix compilation for !CONFIG_IP_MULTICAST rtl8187: Add termination packet to prevent stall iwlwifi: fix rs_get_rate WARN_ON() p54usb: fix packet loss with first generation devices sctp: Fix another socket race during accept/peeloff sctp: Properly timestamp outgoing data chunks for rtx purposes sctp: Correctly start rtx timer on new packet transmissions. sctp: Fix crc32c calculations on big-endian arhes. ...
2009-01-26net: Fix linux/if_frad.h's suitability for userspace.Krzysztof Hałasa
The userspace interfaces are protected by CONFIG_* ifdefs and that of course can't work. Reported by Jaswinder Singh Rajput. Signed-off-by: Krzysztof Hałasa <khc@pm.waw.pl> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-26i2c: Warn on deprecated binding model useJean Delvare
Let the kernel developers know that i2c_attach_client() and i2c_detach_client() are deprecated and should no longer be used. Drivers using these should be converted to the standard device driver binding model (probe and remove methods.) Signed-off-by: Jean Delvare <khali@linux-fr.org> Acked-by: Ben Dooks <ben-linux@fluff.org>
2009-01-26i2c: Delete many unused adapter IDsJean Delvare
Signed-off-by: Jean Delvare <khali@linux-fr.org>
2009-01-26i2c: Delete 10 unused driver IDsJean Delvare
Signed-off-by: Jean Delvare <khali@linux-fr.org>
2009-01-26Merge branch 'for_linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-quota-2.6 * 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-quota-2.6: ocfs2: Remove ocfs2_dquot_initialize() and ocfs2_dquot_drop() quota: Improve locking
2009-01-26Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6: klist.c: bit 0 in pointer can't be used as flag debugfs: introduce stub for debugfs_create_size_t() when DEBUG_FS=n sysfs: fix problems with binary files PNP: fix broken pnp lowercasing for acpi module aliases driver core: Convert '/' to '!' in dev_set_name()
2009-01-26Merge branch 'for-next' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu * 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu: m68k,m68knommu: merge header files Resolve trivial conflict in arch/m68knommu/include/asm/Kbuild
2009-01-26Merge branch 'drm-fixes' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6 * 'drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6: drm/i915: Fix cursor physical address choice to match the 2D driver. drm: stash AGP include under the do-we-have-AGP ifdef drm: don't whine about not reading EDID data drm/i915: hook up LVDS DPMS property drm/i915: remove unnecessary debug output in KMS init i915: fix freeing path for gem phys objects. drm: create mode_config idr lock drm: fix leak of device mappings since multi-master changes.
2009-01-26Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6: PCI hotplug: fix lock imbalance in pciehp PCI PM: Restore standard config registers of all devices early PCI/MSI: bugfix/utilize for msi_capability_init()
2009-01-26Merge branch 'fixes' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/djbw/async_tx * 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/async_tx: i.MX31: framebuffer driver i.MX31: Image Processing Unit DMA and IRQ drivers dmaengine: add async_tx_clear_ack() macro dmaengine: dma_issue_pending_all == nop when CONFIG_DMA_ENGINE=n dmaengine: kill some dubious WARN_ONCEs fsldma: print correct IRQ on mpc83xx fsldma: check for NO_IRQ in fsl_dma_chan_remove() dmatest: Use custom map/unmap for destination buffer fsldma: use a valid 'device' for dma_pool_create dmaengine: fix dependency chaining
2009-01-26Merge branch 'core-fixes-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: debugobjects: add and use INIT_WORK_ON_STACK rcu: remove duplicate CONFIG_RCU_CPU_STALL_DETECTOR relay: fix lock imbalance in relay_late_setup_files oprofile: fix uninitialized use of struct op_entry rcu: move Kconfig menu softlock: fix false panic which can occur if softlockup_thresh is reduced rcu: add __cpuinit to rcu_init_percpu_data()
2009-01-26Merge branch 'timers-fixes-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'timers-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: hrtimers: fix inconsistent lock state on resume in hres_timers_resume time-sched.c: tick_nohz_update_jiffies should be static locking, hpet: annotate false positive warning kernel/fork.c: unused variable 'ret' itimers: remove the per-cpu-ish-ness
2009-01-26Merge branch 'x86-fixes-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (29 commits) xen: unitialised return value in xenbus_write_transaction x86: fix section mismatch warning x86: unmask CPUID levels on Intel CPUs, fix x86: work around PAGE_KERNEL_WC not getting WC in iomap_atomic_prot_pfn. x86: use standard PIT frequency xen: handle highmem pages correctly when shrinking a domain x86, mm: fix pte_free() xen: actually release memory when shrinking domain x86: unmask CPUID levels on Intel CPUs x86: add MSR_IA32_MISC_ENABLE bits to <asm/msr-index.h> x86: fix PTE corruption issue while mapping RAM using /dev/mem x86: mtrr fix debug boot parameter x86: fix page attribute corruption with cpa() Revert "x86: signal: change type of paramter for sys_rt_sigreturn()" x86: use early clobbers in usercopy*.c x86: remove kernel_physical_mapping_init() from init section fix: crash: IP: __bitmap_intersects+0x48/0x73 cpufreq: use work_on_cpu in acpi-cpufreq.c for drv_read and drv_write work_on_cpu: Use our own workqueue. work_on_cpu: don't try to get_online_cpus() in work_on_cpu. ...
2009-01-26[libata] pata_via: support VX855, future chips whose IDE controller use 0x0571JosephChan@via.com.tw
It supports VX855 and future chips whose IDE controller uses PCI ID 0x0571. Signed-off-by: Joseph Chan <josephchan@via.com.tw> Acked-by: Tejun Heo <tj@kernel.org> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2009-01-23Merge branch 'fix/asoc' into for-linusTakashi Iwai
2009-01-23ASoC: Add missing comma to SND_SOC_DAPM_SWITCH_E in soc-dapm.hPeter Ujfalusi
Typo fix. Signed-off-by: Peter Ujfalusi <peter.ujfalusi@nokia.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2009-01-22sctp: Fix crc32c calculations on big-endian arhes.Vlad Yasevich
crc32c algorithm provides a byteswaped result. On little-endian arches, the result ends up in big-endian/network byte order. On big-endinan arches, the result ends up in little-endian order and needs to be byte swapped again. Thus calling cpu_to_le32 gives the right output. Tested-by: Jukka Taimisto <jukka.taimisto@mail.suomi.net> Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-22Merge branch 'core/debugobjects' into core/urgentThomas Gleixner
2009-01-22debugobjects: add and use INIT_WORK_ON_STACKThomas Gleixner
Impact: Fix debugobjects warning debugobject enabled kernels spit out a warning in hpet code due to a workqueue which is initialized on stack. Add INIT_WORK_ON_STACK() which calls init_timer_on_stack() and use it in hpet. Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2009-01-22drm: create mode_config idr lockJesse Barnes
Create a separate mode_config IDR lock for simplicity. The core DRM config structures (connector, mode, etc. lists) are still protected by the mode_config mutex, but the CRTC IDR (used for the various identifier IDs) is now protected by the mode_config idr_mutex. Simplifies the locking a bit and removes a warning. All objects are protected by the config mutex, we may in the future, split the object further to have reference counts. Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by: Dave Airlie <airlied@redhat.com>
2009-01-21usbnet: allow type check of devdbg arguments in non-debug buildSteve Glendinning
Improve usbnet's devdbg to always type-check diagnostic arguments, like dev_dbg (device.h). This makes no change to the resulting size of usbnet modules. This patch also removes an #ifdef DEBUG directive from rndis_wlan so it's devdbg statements are always type-checked at compile time. Signed-off-by: Steve Glendinning <steve.glendinning@smsc.com> Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-20klist.c: bit 0 in pointer can't be used as flagJesper Nilsson
The commit a1ed5b0cffe4b16a93a6a3390e8cee0fbef94f86 (klist: don't iterate over deleted entries) introduces use of the low bit in a pointer to indicate if the knode is dead or not, assuming that this bit is always free. This is not true for all architectures, CRIS for example may align data on byte borders. The result is a bunch of warnings on bootup, devices not being added correctly etc, reported by Hinko Kocevar <hinko.kocevar@cetrtapot.si>: ------------[ cut here ]------------ WARNING: at lib/klist.c:62 () Modules linked in: Stack from c1fe1cf0: c01cc7f4 c1fe1d11 c000eb4e c000e4de 00000000 00000000 c1f4f78f c1f50c2d c01d008c c1fdd1a0 c1fdd1a0 c1fe1d38 c0192954 c1fe0000 00000000 c1fe1dc0 00000002 7fffffff c1fe1da8 c0192d50 c1fe1dc0 00000002 7fffffff c1ff9fcc Call Trace: [<c000eb4e>] [<c000e4de>] [<c0192954>] [<c0192d50>] [<c001d49e>] [<c000b688>] [<c0192a3c>] [<c000b63e>] [<c000b63e>] [<c001a542>] [<c00b55b0>] [<c00411c0>] [<c00b559c>] [<c01918e6>] [<c0191988>] [<c01919d0>] [<c00cd9c8>] [<c00cdd6a>] [<c0034178>] [<c000409a>] [<c0015576>] [<c0029130>] [<c0029078>] [<c0029170>] [<c0012336>] [<c00b4076>] [<c00b4770>] [<c006d6e4>] [<c006d974>] [<c006dca0>] [<c0028d6c>] [<c0028e12>] [<c0006424>] <4>---[ end trace 4eaa2a86a8e2da22 ]--- ------------[ cut here ]------------ Repeat ad nauseam. Wed, Jan 14, 2009 at 12:11:32AM +0100, Bastien ROUCARIES wrote: > Perhaps using a pointerhackalign trick on this structure where > #define pointerhackalign(x) __attribute__ ((aligned (x))) > and declare > struct klist_node { > ... > } pointerhackalign(2); > > Because __attribute__ ((aligned (x))) could only increase alignment > it will safe to do that and serve as documentation purpose :) That works, but we need to do it not for the struct klist_node, but for the struct we insert into the void * in klist_node, which is struct klist. Reported-by: Hinko Kocevar <hinko.kocevar@cetrtapot.si Cc: Bastien ROUCARIES <roucaries.bastien@gmail.com> Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com> Cc: stable <stable@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-01-20debugfs: introduce stub for debugfs_create_size_t() when DEBUG_FS=nInaky Perez-Gonzalez
Toralf Förster <toralf.foerster@gmx.de> reported a build failure in the WiMAX stack when CONFIG_DEBUG_FS=n http://linuxwimax.org/pipermail/wimax/2009-January/000449.html This is due to debugfs_create_size_t() missing an stub that returns -ENODEV when the DEBUGFS subsystem is not configured in (like the rest of the debugfs API). This patch adds said stub. Reported-by: Toralf Förster <toralf.foerster@gmx.de> Signed-off-by: Inaky Perez-Gonzalez <inaky@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-01-20Merge branch 'master' of ↵David S. Miller
git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-2.6
2009-01-19dmaengine: add async_tx_clear_ack() macroGuennadi Liakhovetski
To complete the DMA_CTRL_ACK handling API add a async_tx_clear_ack() macro. Signed-off-by: Guennadi Liakhovetski <lg@denx.de> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2009-01-19dmaengine: dma_issue_pending_all == nop when CONFIG_DMA_ENGINE=nDan Williams
The device list will always be empty in this configuration, so no need to walk the list. Reported-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Dan Williams <dan.j.williams@intel.com>