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2013-02-18cgroup: fix cgroup_rmdir() vs close(eventfd) raceLi Zefan
commit 205a872bd6f9a9a09ef035ef1e90185a8245cc58 ("cgroup: fix lockdep warning for event_control") solved a deadlock by introducing a new bug. Move cgrp->event_list to a temporary list doesn't mean you can traverse this list locklessly, because at the same time cgroup_event_wake() can be called and remove the event from the list. The result of this race is disastrous. We adopt the way how kvm irqfd code implements race-free event removal, which is now described in the comments in cgroup_event_wake(). v3: - call eventfd_signal() no matter it's eventfd close or cgroup removal that removes the cgroup event. Acked-by: Kirill A. Shutemov <kirill@shutemov.name> Signed-off-by: Li Zefan <lizefan@huawei.com> Signed-off-by: Tejun Heo <tj@kernel.org>
2013-02-18cpuset: fix cpuset_print_task_mems_allowed() vs rename() raceLi Zefan
rename() will change dentry->d_name. The result of this race can be worse than seeing partially rewritten name, but we might access a stale pointer because rename() will re-allocate memory to hold a longer name. It's safe in the protection of dentry->d_lock. v2: check NULL dentry before acquiring dentry lock. Signed-off-by: Li Zefan <lizefan@huawei.com> Signed-off-by: Tejun Heo <tj@kernel.org> Cc: stable@vger.kernel.org
2013-02-18cgroup: fix exit() vs rmdir() raceLi Zefan
In cgroup_exit() put_css_set_taskexit() is called without any lock, which might lead to accessing a freed cgroup: thread1 thread2 --------------------------------------------- exit() cgroup_exit() put_css_set_taskexit() atomic_dec(cgrp->count); rmdir(); /* not safe !! */ check_for_release(cgrp); rcu_read_lock() can be used to make sure the cgroup is alive. Signed-off-by: Li Zefan <lizefan@huawei.com> Signed-off-by: Tejun Heo <tj@kernel.org> Cc: stable@vger.kernel.org
2013-02-18ALSA: hda - Fix the silent speaker output on Fujitsu S7020 laptopTakashi Iwai
In the recent update, Fujitsu S7020 laptop with ALC260 codec lost the speaker output, no matter how the amps and the pins are set. After a long debugging session, we found out that the default codec init code is harmful for this machine, and we have to reset it to ALC_INIT_NONE. Reported-and-tested-by: Jonathan Woithe <jwoithe@just42.net> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-02-18mac80211: don't spam mesh probe response messagesThomas Pedersen
If mesh plink debugging is enabled, this gets annoying in a crowded environment, fast. Signed-off-by: Thomas Pedersen <thomas@cozybit.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-02-18mac80211: stringify mesh peering eventsThomas Pedersen
Convert mesh peering events into strings and make the debug output a little easier to read. Also stop printing the llid and plid since these don't change across peering states and are random numbers anyway so they just amount to noise. Signed-off-by: Thomas Pedersen <thomas@cozybit.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-02-18mac80211: clean up mesh HT operationThomas Pedersen
ieee80211_ht_cap_ie_to_sta_ht_cap() will clean up the ht_supported flag and station bandwidth field for us if the peer beacon doesn't have an HT capability element (is operating as non-HT). Also, we don't really need a special station ch_width member to track the station operating mode any more so use sta.bandwidth instead. Signed-off-by: Thomas Pedersen <thomas@cozybit.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-02-18mac80211: fix harmless station flush warningJohannes Berg
If an interface is set down while authenticating or associating, there's a station entry that will be removed by the flushing in do_stop() and that will cause a warning. It's otherwise harmless, but avoid the warning by calling ieee80211_mgd_stop() first. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-02-18cfg80211: add correct docbook entriesJohannes Berg
Update the 802.11 book to list the correct data structures. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-02-18ALSA: hda - add quirks for mute LED on two HP machinesDavid Henningsson
These two machines have no mute LED string in BIOS. BugLink: https://bugs.launchpad.net/bugs/1128934 Tested-by: Tammy Yang <tammy.yang@canonical.com> Signed-off-by: David Henningsson <david.henningsson@canonical.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-02-18x86/memtest: Shorten time for testsAlexander Holler
By just reversing the order memtest is using the test patterns, an additional round to zero the memory is not necessary. This might save up to a second or even more for setups which are doing tests on every boot. Signed-off-by: Alexander Holler <holler@ahsoftware.de> Cc: Yinghai Lu <yinghai@kernel.org> 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/1361029097-8308-1-git-send-email-holler@ahsoftware.de Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-02-18Merge branch 'misc' into releaseLen Brown
Conflicts: arch/x86/kernel/process.c Signed-off-by: Len Brown <len.brown@intel.com>
2013-02-18Merge branches 'idle-remove-statedata', 'pm_idle' and 'idle-hsw-turbostat' ↵Len Brown
into release
2013-02-17PM idle: remove global declaration of pm_idleLen Brown
pm_idle appears in no generic Linux code, it appears only in architecture-specific code. Thus, pm_idle should not be declared in pm.h. Architectures that use an idle function pointer should delcare one local to their architecture, and/or use cpuidle. Signed-off-by: Len Brown <len.brown@intel.com> Reviewed-by: Kevin Hilman <khilman@linaro.org> Tested-by: Kevin Hilman <khilman@linaro.org> Cc: linux-pm@vger.kernel.org
2013-02-17unicore32 idle: delete stray pm_idle commentLen Brown
as pm_idle() has already been deleted from this code, the comment was a stray. Signed-off-by: Len Brown <len.brown@intel.com> Cc: Guan Xuetao <gxt@mprc.pku.edu.cn>
2013-02-17openrisc idle: delete pm_idleLen Brown
pm_idle() on openrisc was dead code. Signed-off-by: Len Brown <len.brown@intel.com> Cc: linux@lists.openrisc.net
2013-02-17mn10300 idle: delete pm_idleLen Brown
pm_idle on mn10300 served no purpose. Signed-off-by: Len Brown <len.brown@intel.com> Cc: linux-am33-list@redhat.com
2013-02-17microblaze idle: delete pm_idleLen Brown
pm_idle on microblaze served no purpose. Signed-off-by: Len Brown <len.brown@intel.com> Cc: microblaze-uclinux@itee.uq.edu.au
2013-02-17m32r idle: delete pm_idle, and other dead idle codeLen Brown
All paths on m32r lead to cpu_relax(). So delete the dead code and simply call cpu_relax() directly. Signed-off-by: Len Brown <len.brown@intel.com> Cc: linux-m32r@ml.linux-m32r.org
2013-02-17ia64 idle: delete pm_idleLen Brown
pm_idle() on ia64 was a synonym for default_idle(). So simply invoke default_idle() directly. Signed-off-by: Len Brown <len.brown@intel.com> Cc: linux-ia64@vger.kernel.org
2013-02-17cris idle: delete idle and pm_idleLen Brown
pm_idle() and idle() served no purpose on cris -- invoke default_idle() directly. Signed-off-by: Len Brown <len.brown@intel.com> Acked-by: Jesper Nilsson <jesper.nilsson@axis.com>
2013-02-17ARM64 idle: delete pm_idleLen Brown
pm_idle() on arm64 was a synonym for default_idle(), so remove it and invoke default_idle() directly. Signed-off-by: Len Brown <len.brown@intel.com> Acked-by: Catalin Marinas <catalin.marinas@arm.com>
2013-02-17ARM idle: delete pm_idleLen Brown
pm_idle() on ARM was a synonym for default_idle(), so simply invoke default_idle() directly. Signed-off-by: Len Brown <len.brown@intel.com> Reviewed-by: Kevin Hilman <khilman@linaro.org> Tested-by: Kevin Hilman <khilman@linaro.org>
2013-02-17blackfin idle: delete pm_idleLen Brown
pm_idle is dead code on blackfin. Signed-off-by: Len Brown <len.brown@intel.com> Cc: uclinux-dist-devel@blackfin.uclinux.org
2013-02-17sparc idle: rename pm_idle to sparc_idleLen Brown
(pm_idle)() is being removed from linux/pm.h because Linux does not have such a cross-architecture concept. sparc uses an idle function pointer in its architecture specific code. So we re-name sparc use of pm_idle to sparc_idle. Signed-off-by: Len Brown <len.brown@intel.com> Acked-by: David S. Miller <davem@davemloft.net> Acked-by: Sam Ravnborg <sam@ravnborg.org>
2013-02-17sh idle: rename global pm_idle to static sh_idleLen Brown
SH idle code could use some simplification. This patch enables that by guaranteeing that "sh_idle" is local, and thus architecture specific. Signed-off-by: Len Brown <len.brown@intel.com> Cc: linux-sh@vger.kernel.org
2013-02-17x86 idle: rename global pm_idle to static x86_idleLen Brown
(pm_idle)() is being removed from linux/pm.h because Linux does not have such a cross-architecture concept. x86 uses an idle function pointer in its architecture specific code as a backup to cpuidle. So we re-name x86 use of pm_idle to x86_idle, and make it static to x86. Signed-off-by: Len Brown <len.brown@intel.com> Cc: x86@kernel.org
2013-02-17APM idle: register apm_cpu_idle via cpuidleLen Brown
Update APM to register its local idle routine with cpuidle. This allows us to stop exporting pm_idle to modules on x86. The Kconfig sub-option, APM_CPU_IDLE, now depends on on CPU_IDLE. Compile-tested only. Signed-off-by: Len Brown <len.brown@intel.com> Reviewed-by: Daniel Lezcano <daniel.lezcano@linaro.org> Cc: Jiri Kosina <jkosina@suse.cz>
2013-02-17Merge branch 'next/fixes-samsung' of ↵Olof Johansson
git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung into next/fixes-non-critical From Kukjin Kim: Here is Samsung fixes for v3.9 and it is not a critical fixes. * 'next/fixes-samsung' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung: ARM: dts: Correct pin configuration of SD 4 for exynos4x12-pinctrl ARM: SAMSUNG: Silence empty switch warning in fimc-core.h ARM: SAMSUNG: Silence empty switch warning in sdhci.h ARM: S5PV210: Fix early uart output in fifo mode ARM: S3C24XX: Fix compile breakage for SMDK2410 ARM: S3C24XX: add missing platform_device.h include for osiris ARM: S3C24XX: let S3C2412_PM select S3C2412_PM_SLEEP ARM: SAMSUNG: Gracefully exit on suspend failure ARM: SAMSUNG: using vsnprintf instead of vsprintf for the limit buffer length 256 ARM: S3C24XX: Make 'clk_msysclk' static
2013-02-17umount oops when remove blocklayoutdriver firstfanchaoting
now pnfs client uses block layout, maybe we can remove blocklayoutdriver first. if we umount later, it can cause oops in unset_pnfs_layoutdriver. because nfss->pnfs_curr_ld->clear_layoutdriver is invalid. reproduce it: modprobe blocklayoutdriver mount -t nfs4 -o minorversion=1 pnfsip:/ /mnt/ rmmod blocklayoutdriver umount /mnt then you can see following CPU 0 Pid: 17023, comm: umount.nfs4 Tainted: GF O 3.7.0-rc6-pnfs #1 VMware, Inc. VMware Virtual Platform/440BX Desktop Reference Platform RIP: 0010:[<ffffffffa04cfe6d>] [<ffffffffa04cfe6d>] unset_pnfs_layoutdriver+0x1d/0x70 [nfsv4] RSP: 0018:ffff8800022d9e48 EFLAGS: 00010286 RAX: ffffffffa04a1b00 RBX: ffff88000b013800 RCX: 0000000000000001 RDX: ffffffff81ae8ee0 RSI: ffff880001ee94b8 RDI: ffff88000b013800 RBP: ffff8800022d9e58 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff880001ee9400 R13: ffff8800105978c0 R14: 00007fff25846c08 R15: 0000000001bba550 FS: 00007f45ae7f0700(0000) GS:ffff880012c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b CR2: ffffffffa04a1b38 CR3: 0000000002c0c000 CR4: 00000000000006f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Process umount.nfs4 (pid: 17023, threadinfo ffff8800022d8000, task ffff880006e48aa0) Stack: ffff8800105978c0 ffff88000b013800 ffff8800022d9e78 ffffffffa04cd0ce ffff8800022d9e78 ffff88000b013800 ffff8800022d9ea8 ffffffffa04755a7 ffff8800022d9ea8 ffff880002f96400 ffff88000b013800 ffff880002f96400 Call Trace: [<ffffffffa04cd0ce>] nfs4_destroy_server+0x1e/0x30 [nfsv4] [<ffffffffa04755a7>] nfs_free_server+0xb7/0x150 [nfs] [<ffffffffa047d4d5>] nfs_kill_super+0x35/0x40 [nfs] [<ffffffff81178d35>] deactivate_locked_super+0x45/0x70 [<ffffffff8117986a>] deactivate_super+0x4a/0x70 [<ffffffff81193ee2>] mntput_no_expire+0xd2/0x130 [<ffffffff81194d62>] sys_umount+0x72/0xe0 [<ffffffff8154af59>] system_call_fastpath+0x16/0x1b Code: 06 e1 b8 ea ff ff ff eb 9e 0f 1f 44 00 00 55 48 89 e5 53 48 83 ec 08 66 66 66 66 90 48 8b 87 80 03 00 00 48 89 fb 48 85 c0 74 29 <48> 8b 40 38 48 85 c0 74 02 ff d0 48 8b 03 3e ff 48 04 0f 94 c2 RIP [<ffffffffa04cfe6d>] unset_pnfs_layoutdriver+0x1d/0x70 [nfsv4] RSP <ffff8800022d9e48> CR2: ffffffffa04a1b38 ---[ end trace 29f75aaedda058bf ]--- Signed-off-by: fanchaoting<fanchaoting@cn.fujitsu.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> Cc: stable@vger.kernel.org
2013-02-17sunrpc: silence build warning in gss_fill_contextJeff Layton
Since commit 620038f6d23, gcc is throwing the following warning: CC [M] net/sunrpc/auth_gss/auth_gss.o In file included from include/linux/sunrpc/types.h:14:0, from include/linux/sunrpc/sched.h:14, from include/linux/sunrpc/clnt.h:18, from net/sunrpc/auth_gss/auth_gss.c:45: net/sunrpc/auth_gss/auth_gss.c: In function ‘gss_pipe_downcall’: include/linux/sunrpc/debug.h:45:10: warning: ‘timeout’ may be used uninitialized in this function [-Wmaybe-uninitialized] printk(KERN_DEFAULT args); \ ^ net/sunrpc/auth_gss/auth_gss.c:194:15: note: ‘timeout’ was declared here unsigned int timeout; ^ If simple_get_bytes returns an error, then we'll end up calling printk with an uninitialized timeout value. Reasonably harmless, but fairly simple to fix by removing the printout of the uninitialised parameters. Cc: Andy Adamson <andros@netapp.com> Signed-off-by: Jeff Layton <jlayton@redhat.com> [Trond: just remove the parameters rather than initialising timeout] Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2013-02-17nfs: remove kfree() redundant null checksTim Gardner
smatch analysis: fs/nfs/getroot.c:130 nfs_get_root() info: redundant null check on name calling kfree() fs/nfs/unlink.c:272 nfs_async_unlink() info: redundant null check on devname_garbage calling kfree() Cc: Trond Myklebust <Trond.Myklebust@netapp.com> Cc: linux-nfs@vger.kernel.org Signed-off-by: Tim Gardner <tim.gardner@canonical.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2013-02-17NFSv4.1: Don't decode skipped layoutgetsWeston Andros Adamson
layoutget's prepare hook can call rpc_exit with status = NFS4_OK (0). Because of this, nfs4_proc_layoutget can't depend on a 0 status to mean that the RPC was successfully sent, received and parsed. To fix this, use the result's len member to see if parsing took place. This fixes the following OOPS -- calling xdr_init_decode() with a buffer length 0 doesn't set the stream's 'p' member and ends up using uninitialized memory in filelayout_decode_layout. BUG: unable to handle kernel paging request at 0000000000008050 IP: [<ffffffff81282e78>] memcpy+0x18/0x120 PGD 0 Oops: 0000 [#1] SMP last sysfs file: /sys/devices/pci0000:00/0000:00:11.0/0000:02:01.0/irq CPU 1 Modules linked in: nfs_layout_nfsv41_files nfs lockd fscache auth_rpcgss nfs_acl autofs4 sunrpc ipt_REJECT nf_conntrack_ipv4 nf_defrag_ipv4 iptable_filter ip_tables ip6t_REJECT nf_conntrack_ipv6 nf_defrag_ipv6 xt_state nf_conntrack ip6table_filter ip6_tables ipv6 dm_mirror dm_region_hash dm_log dm_mod ppdev parport_pc parport snd_ens1371 snd_rawmidi snd_ac97_codec ac97_bus snd_seq snd_seq_device snd_pcm snd_timer snd soundcore snd_page_alloc e1000 microcode vmware_balloon i2c_piix4 i2c_core sg shpchp ext4 mbcache jbd2 sr_mod cdrom sd_mod crc_t10dif pata_acpi ata_generic ata_piix mptspi mptscsih mptbase scsi_transport_spi [last unloaded: speedstep_lib] Pid: 1665, comm: flush-0:22 Not tainted 2.6.32-356-test-2 #2 VMware, Inc. VMware Virtual Platform/440BX Desktop Reference Platform RIP: 0010:[<ffffffff81282e78>] [<ffffffff81282e78>] memcpy+0x18/0x120 RSP: 0018:ffff88003dfab588 EFLAGS: 00010206 RAX: ffff88003dc42000 RBX: ffff88003dfab610 RCX: 0000000000000009 RDX: 000000003f807ff0 RSI: 0000000000008050 RDI: ffff88003dc42000 RBP: ffff88003dfab5b0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000080 R12: 0000000000000024 R13: ffff88003dc42000 R14: ffff88003f808030 R15: ffff88003dfab6a0 FS: 0000000000000000(0000) GS:ffff880003420000(0000) knlGS:0000000000000000 CS: 0010 DS: 0018 ES: 0018 CR0: 000000008005003b CR2: 0000000000008050 CR3: 000000003bc92000 CR4: 00000000001407e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Process flush-0:22 (pid: 1665, threadinfo ffff88003dfaa000, task ffff880037f77540) Stack: ffffffffa0398ac1 ffff8800397c5940 ffff88003dfab610 ffff88003dfab6a0 <d> ffff88003dfab5d0 ffff88003dfab680 ffffffffa01c150b ffffea0000d82e70 <d> 000000508116713b 0000000000000000 0000000000000000 0000000000000000 Call Trace: [<ffffffffa0398ac1>] ? xdr_inline_decode+0xb1/0x120 [sunrpc] [<ffffffffa01c150b>] filelayout_decode_layout+0xeb/0x350 [nfs_layout_nfsv41_files] [<ffffffffa01c17fc>] filelayout_alloc_lseg+0x8c/0x3c0 [nfs_layout_nfsv41_files] [<ffffffff8150e6ce>] ? __wait_on_bit+0x7e/0x90 Signed-off-by: Weston Andros Adamson <dros@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> Cc: stable@vger.kernel.org
2013-02-17Revert "of: use platform_device_add"Grant Likely
This reverts commit aac73f34542bc7ae4317928d2eabfeb21d247323. That commit causes two kinds of breakage; it breaks registration of AMBA devices when one of the parent nodes already contains overlapping resource regions, and it breaks calls to request_region() by device drivers in certain conditions where there are overlapping memory regions. Both of these problems can probably be fixed, but it is better to back out the commit and get a proper fix designed before trying again. Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2013-02-17ALSA: usb/quirks, fix out-of-bounds accessJiri Slaby
bootresponse in snd_usb_mbox2_boot_quirk is only 12 (decimal) u8's long, but i9s passed to snd_usb_ctl_msg as it would be 0x12 (hexa) long. Fix that by having proper size of the array, i.e. 0x12. Signed-off-by: Jiri Slaby <jslaby@suse.cz> Cc: <stable@vger.kernel.org> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-02-17ARM: add SCHED_HRTICK config optionRussell King
As we don't include kernel/Kconfig.hz as this defines HZ values unsuitable for ARM platforms, add the SCHED_HRTICK to properly configure the scheduler for hrtimer operation. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2013-02-17Merge branch 'pm-cpufreq'Rafael J. Wysocki
* pm-cpufreq: cpufreq / intel_pstate: Add kernel command line option disable intel_pstate. cpufreq / intel_pstate: Change to disallow module build
2013-02-16Input: cyttsp-spi - remove duplicate MODULE_ALIAS()Dmitry Torokhov
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2013-02-16Input: tsc2005 - add MODULE_ALIASPali Rohár
This enables autoloading of tsc2005 driver when is compiled as a module. Signed-off-by: Pali Rohár <pali.rohar@gmail.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2013-02-16bq2415x_charger: Add support for offline and 100mA modePali Rohár
* Renamed mode BQ2415X_MODE_NONE to BQ2415X_MODE_OFF because this mode turning chaging completly off * Added new mode BQ2415X_MODE_NONE which enable charging with maximal current limit 100mA (this is minimal safe value for bq2415x chips) Signed-off-by: Pali Rohár <pali.rohar@gmail.com> Signed-off-by: Anton Vorontsov <anton@enomsg.org>
2013-02-16generic-adc-battery: Fix forever loop in gab_remove()Dan Carpenter
There is a forever loop calling iio_channel_release() because the "chan < " part of the "chan < ARRAY_SIZE()" is missing. This is in both the error handling on probe and also in the remove function. The other thing is that it's possible for some of the elements of the adc_bat->channel[chan] array to be an ERR_PTR(). I've changed them to be NULL instead. We're still not allowed to pass NULLs to iio_channel_release() so I've added a check. Finally, I removed an unused "chan = ARRAY_SIZE(gab_chan_name);" statement as a small cleanup. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Anton Vorontsov <anton@enomsg.org>
2013-02-16goldfish_battery: Add missing GENERIC_HARDIRQS dependencyHeiko Carstens
Fix this link error on s390: ERROR: "devm_request_threaded_irq" [drivers/power/goldfish_battery.ko] undefined! Cc: David Woodhouse <dwmw2@infradead.org> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Anton Vorontsov <anton@enomsg.org>
2013-02-16ARM: 7650/1: mm: replace direct access to mm->context.id with new macroBen Dooks
The mmid macro is meant to be used to get the mm->context.id data from the mm structure, but it seems to have been missed in a cuple of files. Acked-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2013-02-16ARM: 7649/1: mm: mm->context.id fix for big-endianBen Dooks
Since the new ASID code in b5466f8728527a05a493cc4abe9e6f034a1bbaab ("ARM: mm: remove IPI broadcasting on ASID rollover") was changed to use 64bit operations it has broken the BE operation due to an issue with the MM code accessing sub-fields of mm->context.id. When running in BE mode we see the values in mm->context.id are stored with the highest value first, so the LDR in the arch/arm/mm/proc-macros.S reads the wrong part of this field. To resolve this, change the LDR in the mmid macro to load from +4. Acked-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2013-02-16ARM: 7648/1: pci: Allow passing per-controller private dataThierry Reding
In order to allow drivers to specify private data for each controller, this commit adds a private_data field to the struct hw_pci. This field is an array of nr_controllers pointers that will be used to initialize the private_data field of the corresponding controller's pci_sys_data structure. Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2013-02-16ARM: 7647/1: pci: Keep pci_common_init() around after initThierry Reding
When using deferred driver probing, PCI host controller drivers may actually require this function after the init stage. Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2013-02-16ARM: fix warnings introduced by previous patchRussell King
869486d5f51 (ARM: 7646/1: mm: use static_vm for managing static mapped areas) introduced new warnings: arch/arm/mm/mmu.c: In function 'pci_reserve_io': arch/arm/mm/mmu.c:888:16: warning: unused variable 'addr' arch/arm/mm/mmu.c:887:20: warning: unused variable 'vm' because it failed to delete the two local variables it no longer used. Fix this. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2013-02-16ARM: 7646/1: mm: use static_vm for managing static mapped areasJoonsoo Kim
A static mapped area is ARM-specific, so it is better not to use generic vmalloc data structure, that is, vmlist and vmlist_lock for managing static mapped area. And it causes some needless overhead and reducing this overhead is better idea. Now, we have newly introduced static_vm infrastructure. With it, we don't need to iterate all mapped areas. Instead, we just iterate static mapped areas. It helps to reduce an overhead of finding matched area. And architecture dependency on vmalloc layer is removed, so it will help to maintainability for vmalloc layer. Reviewed-by: Nicolas Pitre <nico@linaro.org> Acked-by: Rob Herring <rob.herring@calxeda.com> Tested-by: Santosh Shilimkar <santosh.shilimkar@ti.com> Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@lge.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2013-02-16ARM: 7645/1: ioremap: introduce an infrastructure for static mapped areaJoonsoo Kim
In current implementation, we used ARM-specific flag, that is, VM_ARM_STATIC_MAPPING, for distinguishing ARM specific static mapped area. The purpose of static mapped area is to re-use static mapped area when entire physical address range of the ioremap request can be covered by this area. This implementation causes needless overhead for some cases. For example, assume that there is only one static mapped area and vmlist has 300 areas. Every time we call ioremap, we check 300 areas for deciding whether it is matched or not. Moreover, even if there is no static mapped area and vmlist has 300 areas, every time we call ioremap, we check 300 areas in now. If we construct a extra list for static mapped area, we can eliminate above mentioned overhead. With a extra list, if there is one static mapped area, we just check only one area and proceed next operation quickly. In fact, it is not a critical problem, because ioremap is not frequently used. But reducing overhead is better idea. Another reason for doing this work is for removing architecture dependency on vmalloc layer. I think that vmlist and vmlist_lock is internal data structure for vmalloc layer. Some codes for debugging and stat inevitably use vmlist and vmlist_lock. But it is preferable that they are used as least as possible in outside of vmalloc.c Now, I introduce an ARM-specific infrastructure for static mapped area. In the following patch, we will use this and resolve above mentioned problem. Reviewed-by: Nicolas Pitre <nico@linaro.org> Tested-by: Santosh Shilimkar <santosh.shilimkar@ti.com> Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@lge.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2013-02-16ARM: 7644/1: vmregion: remove vmregion code entirelyJoonsoo Kim
Now, there is no user for vmregion. So remove it. Acked-by: Nicolas Pitre <nico@linaro.org> Tested-by: Santosh Shilimkar <santosh.shilimkar@ti.com> Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@lge.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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