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2013-02-28arm: mvebu: add LEDs support to defconfig fileThomas Petazzoni
The OpenBlocks AX3-4 platform has several LEDs, so it sounds wise to enable LED support in mvebu_defconfig. We anticipate that more platforms using Marvell EBU SoCs will have LEDs in the future. Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Signed-off-by: Jason Cooper <jason@lakedaemon.net>
2013-02-28arm: mvebu: enable btmrvl driver in mvebu_defconfigThomas Petazzoni
The Globalscale Mirabox platform, based on the Armada 370 from Marvell, has a SD8787 Wireless/Bluetooth chip connected on the SDIO interface. Now that the mvsdio has a Device Tree binding, and the necessary Device Tree informations have been added at the SoC and board level, let's enable the btmrvl driver for the Bluetooth part of the SD8787 chip. For now, the driver gets probed correctly, detects the device but apparently fails to push the firmware to the device: Bluetooth: vendor=0x2df, device=0x911a, class=255, fn=2 Bluetooth: FW failed to be active in time! Bluetooth: Downloading firmware failed! Bluetooth: vendor=0x2df, device=0x911b, class=255, fn=3 Bluetooth: FW failed to be active in time! Bluetooth: Downloading firmware failed! This will have to be investigated separately. Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Signed-off-by: Jason Cooper <jason@lakedaemon.net>
2013-02-28arm: mvebu: enable mwifiex driver in mvebu_defconfigThomas Petazzoni
The Globalscale Mirabox platform, based on the Armada 370 from Marvell, has a SD8787 Wireless chip connected on the SDIO interface. Now that the mvsdio has a Device Tree binding, and the necessary Device Tree informations have been added at the SoC and board level, let's enable the mwifiex driver for the Wireless part of the SD8787 chip. For now, the driver gets probed correctly, detects a device and shows the network interfaces. However, scanning Wifi networks doesn't work for now, with a 'CMD_RESP: cmd 0x6 error, result=0x1' message. This will have to be investigated separately. Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Signed-off-by: Jason Cooper <jason@lakedaemon.net>
2013-02-28arm: mvebu: enable SDIO support in mvebu_defconfigThomas Petazzoni
Now that the mvsdio driver has gained Device Tree support and the necessary Device Tree informations has been added for Armada 370 and Armada XP platforms, we enable the MMC subsystem and the mvsdio driver in mvebu_defconfig. Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Signed-off-by: Jason Cooper <jason@lakedaemon.net>
2013-02-28arm: mvebu: Update defconfig with Marvell RTC supportGregory CLEMENT
The RTC class driver is already part of the mvebu_defconfig but the Marvell internal RTC not yet. Now that its support is added for mvebu let's update the config file. Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com> Tested-by: Florian Fainelli <florian@openwrt.org> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Jason Cooper <jason@lakedaemon.net>
2013-02-28Merge branch 'timer/cleanup' into late/mvebu2Arnd Bergmann
Basing the mvebu patches on top of the timer cleanup avoids some nasty merges. Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2013-02-28Merge 'mmc/upstream' into late/mvebu2Arnd Bergmann
These patches from the mmc tree were merged into v3.9 already and the later mvebu patches depend on them. Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2013-02-28SUNRPC: make AF_LOCAL connect synchronousJ. Bruce Fields
It doesn't appear that anyone actually needs to connect asynchronously. Also, using a workqueue for the connect means we lose the namespace information from the original process. This is a problem since there's no way to explicitly pass in a filesystem namespace for resolution of an AF_LOCAL address. Acked-by: Trond Myklebust <Trond.Myklebust@netapp.com> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2013-02-28cifs: bugfix for unreclaimed writeback pages in cifs_writev_requeue()Ouyang Maochun
Pages get the PG_writeback flag set before cifs sends its request to SMB server in cifs_writepages(), if the SMB service goes down, cifs may try to recommit the writing requests in cifs_writev_requeue(). However, it does not clean its PG_writeback flag and relaimed the pages even if it fails again in cifs_writev_requeue(), which may lead to the hanging of the processes accessing the cifs directory. This patch just cleans the PG_writeback flags and reclaims the pages under that circumstances. Steps to reproduce the bug(trying serveral times may trigger the issue): 1.Write from cifs client continuously.(e.g dd if=/dev/zero of=<cifs file>) 2.Stop SMB service from server.(e.g service smb stop) 3.Wait for two minutes， and then start SMB service from server.(e.g service smb start) 4.The processes which are accessing cifs directory may hang up. Signed-off-by: Ouyang Maochun <ouyang.maochun@zte.com.cn> Signed-off-by: Jiang Yong <jian.yong5@zte.com.cn> Tested-by: Zhang Xianwei <zhang.xianwei8@zte.com.cn> Reviewed-by: Wang Liang <wang.liang82@zte.com.cn> Reviewed-by: Cai Qu <cai.qu@zte.com.cn> Reviewed-by: Jiang Biao <jiang.biao2@zte.com.cn> Reviewed-by: Jeff Layton <jlayton@redhat.com> Reviewed-by: Pavel Shilovsky <piastry@etersoft.ru> Signed-off-by: Steve French <sfrench@us.ibm.com>
2013-02-28xen/pat: Disable PAT using pat_enabled value.Konrad Rzeszutek Wilk
The git commit 8eaffa67b43e99ae581622c5133e20b0f48bcef1 (xen/pat: Disable PAT support for now) explains in details why we want to disable PAT for right now. However that change was not enough and we should have also disabled the pat_enabled value. Otherwise we end up with: mmap-example:3481 map pfn expected mapping type write-back for [mem 0x00010000-0x00010fff], got uncached-minus ------------[ cut here ]------------ WARNING: at /build/buildd/linux-3.8.0/arch/x86/mm/pat.c:774 untrack_pfn+0xb8/0xd0() mem 0x00010000-0x00010fff], got uncached-minus ------------[ cut here ]------------ WARNING: at /build/buildd/linux-3.8.0/arch/x86/mm/pat.c:774 untrack_pfn+0xb8/0xd0() ... Pid: 3481, comm: mmap-example Tainted: GF 3.8.0-6-generic #13-Ubuntu Call Trace: [<ffffffff8105879f>] warn_slowpath_common+0x7f/0xc0 [<ffffffff810587fa>] warn_slowpath_null+0x1a/0x20 [<ffffffff8104bcc8>] untrack_pfn+0xb8/0xd0 [<ffffffff81156c1c>] unmap_single_vma+0xac/0x100 [<ffffffff81157459>] unmap_vmas+0x49/0x90 [<ffffffff8115f808>] exit_mmap+0x98/0x170 [<ffffffff810559a4>] mmput+0x64/0x100 [<ffffffff810560f5>] dup_mm+0x445/0x660 [<ffffffff81056d9f>] copy_process.part.22+0xa5f/0x1510 [<ffffffff81057931>] do_fork+0x91/0x350 [<ffffffff81057c76>] sys_clone+0x16/0x20 [<ffffffff816ccbf9>] stub_clone+0x69/0x90 [<ffffffff816cc89d>] ? system_call_fastpath+0x1a/0x1f ---[ end trace 4918cdd0a4c9fea4 ]--- (a similar message shows up if you end up launching 'mcelog') The call chain is (as analyzed by Liu, Jinsong): do_fork --> copy_process --> dup_mm --> dup_mmap --> copy_page_range --> track_pfn_copy --> reserve_pfn_range --> line 624: flags != want_flags It comes from different memory types of page table (_PAGE_CACHE_WB) and MTRR (_PAGE_CACHE_UC_MINUS). Stefan Bader dug in this deep and found out that: "That makes it clearer as this will do reserve_memtype(...) --> pat_x_mtrr_type --> mtrr_type_lookup --> __mtrr_type_lookup And that can return -1/0xff in case of MTRR not being enabled/initialized. Which is not the case (given there are no messages for it in dmesg). This is not equal to MTRR_TYPE_WRBACK and thus becomes _PAGE_CACHE_UC_MINUS. It looks like the problem starts early in reserve_memtype: if (!pat_enabled) { /* This is identical to page table setting without PAT */ if (new_type) { if (req_type == _PAGE_CACHE_WC) *new_type = _PAGE_CACHE_UC_MINUS; else *new_type = req_type & _PAGE_CACHE_MASK; } return 0; } This would be what we want, that is clearing the PWT and PCD flags from the supported flags - if pat_enabled is disabled." This patch does that - disabling PAT. CC: stable@vger.kernel.org # 3.3 and further Reported-by: Sander Eikelenboom <linux@eikelenboom.it> Reported-and-Tested-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Reported-and-Tested-by: Stefan Bader <stefan.bader@canonical.com> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
2013-02-28s390/module: fix compile warningHeiko Carstens
Get rid of this one (false positive): arch/s390/kernel/module.c: In function ‘apply_relocate_add’: arch/s390/kernel/module.c:404:5: warning: ‘rc’ may be used uninitialized in this function [-Wmaybe-uninitialized] arch/s390/kernel/module.c:225:6: note: ‘rc’ was declared here Play safe and preinitialize rc with an error value, so we see an error if new users indeed don't initialize it. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2013-02-28qdio: remove unused parametersStefan Raspl
Remove unused function parameters. Signed-off-by: Stefan Raspl <raspl@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2013-02-28s390/uaccess: fix kernel ds access for page table walkHeiko Carstens
When the kernel resides in home space and the mvcos instruction is not available uaccesses for kernel ds happen via simple strnlen() or memcpy() calls. This however can break badly, since uaccesses in kernel space may fail as well, especially if CONFIG_DEBUG_PAGEALLOC is turned on. To fix this implement strnlen_kernel() and copy_in_kernel() functions which can only be used by the page table uaccess functions. These two functions detect invalid memory accesses and return the correct length of processed data.. Both functions are more or less a copy of the std variants without sacf calls. Fixes ipl crashes on 31 bit machines as well on 64 bit machines without mvcos. Caused by changing the default address space of the kernel being home space. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2013-02-28s390/uaccess: fix strncpy_from_user string length checkHeiko Carstens
The "standard" and page table walk variants of strncpy_from_user() first check the length of the to be copied string in userspace. The string is then copied to kernel space and the length returned to the caller. However userspace can modify the string at any time while the kernel checks for the length of the string or copies the string. In result the returned length of the string is not necessarily correct. Fix this by copying in a loop which mimics the mvcos variant of strncpy_from_user(), which handles this correctly. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2013-02-28input: disable i8042 PC Keyboard controller for s390Heiko Carstens
Just add s390 to the list of architectures that don't want this driver. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2013-02-28s390/dis: Fix invalid array sizeSyam Sidhardhan
We are using sizeof operator for an array given as function argument, which is incorrect. Signed-off-by: Syam Sidhardhan <s.syam@samsung.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2013-02-28s390/uaccess: remove pointless access_ok() checksHeiko Carstens
access_ok() always returns 'true' on s390. Therefore all calls are quite pointless and can be removed. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2013-02-28s390/uaccess: fix strncpy_from_user/strnlen_user zero maxlen caseHeiko Carstens
If the maximum length specified for the to be accessed string for strncpy_from_user() and strnlen_user() is zero the following incorrect values would be returned or incorrect memory accesses would happen: strnlen_user_std() and strnlen_user_pt() incorrectly return "1" strncpy_from_user_pt() would incorrectly access "dst[maxlen - 1]" strncpy_from_user_mvcos() would incorrectly return "-EFAULT" Fix all these oddities by adding early checks. Reviewed-by: Gerald Schaefer <gerald.schaefer@de.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2013-02-28s390/uaccess: shorten strncpy_from_user/strnlen_userHeiko Carstens
Always stay within page boundaries when copying from user within strlen_user_mvcos()/strncpy_from_user_mvcos(). This allows to shorten the code a bit and may prevent unnecessary faults, since we copy quite large amounts of memory to kernel space. Also directly call the mvcos variants of copy_from_user() to avoid indirect branches. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2013-02-28s390/dasd: fix unresponsive device after all channel paths were lostStefan Haberland
Failfast bit was set incorrectly. Use set_bit to enable failfast. Reviewed-by: Stefan Weinhuber <wein@de.ibm.com> Signed-off-by: Stefan Haberland <stefan.haberland@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2013-02-28s390/mm: ignore change bit for vmemmapHeiko Carstens
Add hint to the page tables that we don't care about the change bit in storage keys that belong to vmemmap pages. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2013-02-28s390/page table dumper: add support for change-recording override bitHeiko Carstens
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2013-02-289p: if v9fs_fid_lookup() gets to asking server, it'd better have hashed dentryAl Viro
... otherwise the path we'd built isn't worth much. Don't accept such fids obtained from paths unless dentry is still alived by the end of the work. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-02-28x86/kvm: Fix pvclock vsyscall fixmapPeter Hurley
The physical memory fixmapped for the pvclock clock_gettime vsyscall was allocated, and thus is not a kernel symbol. __pa() is the proper method to use in this case. Fixes the crash below when booting a next-20130204+ smp guest on a 3.8-rc5+ KVM host. [ 0.666410] udevd[97]: starting version 175 [ 0.674043] udevd[97]: udevd:[97]: segfault at ffffffffff5fd020 ip 00007fff069e277f sp 00007fff068c9ef8 error d Acked-by: Marcelo Tosatti <mtosatti@redhat.com> Signed-off-by: Peter Hurley <peter@hurleysoftware.com> Signed-off-by: Gleb Natapov <gleb@redhat.com>
2013-02-289p: make sure ->lookup() adds fid to the right dentryAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-02-289p: untangle ->lookup() a bitAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-02-289p: double iput() in ->lookup() if d_materialise_unique() failsAl Viro
d_materialise_unique() does iput() itself. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-02-289p: v9fs_fid_add() can't fail nowAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-02-28v9fs: get rid of v9fs_dentryAl Viro
->d_fsdata can act as hlist_head... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-02-27Merge branch 'akpm' (final batch from Andrew)Linus Torvalds
Merge third patch-bumb from Andrew Morton: "This wraps me up for -rc1. - Lots of misc stuff and things which were deferred/missed from patchbombings 1 & 2. - ocfs2 things - lib/scatterlist - hfsplus - fatfs - documentation - signals - procfs - lockdep - coredump - seqfile core - kexec - Tejun's large IDR tree reworkings - ipmi - partitions - nbd - random() things - kfifo - tools/testing/selftests updates - Sasha's large and pointless hlist cleanup" * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (163 commits) hlist: drop the node parameter from iterators kcmp: make it depend on CHECKPOINT_RESTORE selftests: add a simple doc tools/testing/selftests/Makefile: rearrange targets selftests/efivarfs: add create-read test selftests/efivarfs: add empty file creation test selftests: add tests for efivarfs kfifo: fix kfifo_alloc() and kfifo_init() kfifo: move kfifo.c from kernel/ to lib/ arch Kconfig: centralise CONFIG_ARCH_NO_VIRT_TO_BUS w1: add support for DS2413 Dual Channel Addressable Switch memstick: move the dereference below the NULL test drivers/pps/clients/pps-gpio.c: use devm_kzalloc Documentation/DMA-API-HOWTO.txt: fix typo include/linux/eventfd.h: fix incorrect filename is a comment mtd: mtd_stresstest: use prandom_bytes() mtd: mtd_subpagetest: convert to use prandom library mtd: mtd_speedtest: use prandom_bytes mtd: mtd_pagetest: convert to use prandom library mtd: mtd_oobtest: convert to use prandom library ...
2013-02-28dmaengine: dw_dmac: move to generic DMA bindingArnd Bergmann
The original device tree binding for this driver, from Viresh Kumar unfortunately conflicted with the generic DMA binding, and did not allow to completely seperate slave device configuration from the controller. This is an attempt to replace it with an implementation of the generic binding, but it is currently completely untested, because I do not have any hardware with this particular controller. The patch applies on top of the slave-dma tree, which contains both the base support for the generic DMA binding, as well as the earlier attempt from Viresh. Both of these are currently not merged upstream however. This version incorporates feedback from Viresh Kumar, Andy Shevchenko and Russell King. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Acked-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Cc: Vinod Koul <vinod.koul@linux.intel.com> Cc: devicetree-discuss@lists.ozlabs.org Cc: linux-arm-kernel@lists.infradead.org Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2013-02-279p: turn fid->dlist into hlistAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-02-279p: don't bother with private lock in ->d_fsdata; dentry->d_lock will do ↵Al Viro
just fine Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-02-27target/pscsi: Rename sg_num to nr_vecs in pscsi_get_bio()Asias He
It is actually a vector not a sg, so nr_vecs is better than sg_num. Signed-off-by: Asias He <asias@redhat.com> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2013-02-27target/pscsi: Fix page incrementAsias He
The page++ is wrong. It makes bio_add_pc_page() pointing to a wrong page address if the 'while (len > 0 && data_len > 0) { ... }' loop is executed more than one once. Signed-off-by: Asias He <asias@redhat.com> Cc: <stable@vger.kernel.org> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2013-02-27target/pscsi: Drop unnecessary NULL assignment to bio->bi_nextAsias He
Signed-off-by: Asias He <asias@redhat.com> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2013-02-27target: Add __exit annotation for module_exit functionsAsias He
Inclues sbp_exit, fileio_module_exit, iblock_module_exit and pscsi_module_exit. Note: rd_module_exit() can not be annotated by __exit, becasue it is called by target_core_init_configfs() which is annotated by __init. Signed-off-by: Asias He <asias@redhat.com> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2013-02-27hlist: drop the node parameter from iteratorsSasha Levin
I'm not sure why, but the hlist for each entry iterators were conceived list_for_each_entry(pos, head, member) The hlist ones were greedy and wanted an extra parameter: hlist_for_each_entry(tpos, pos, head, member) Why did they need an extra pos parameter? I'm not quite sure. Not only they don't really need it, it also prevents the iterator from looking exactly like the list iterator, which is unfortunate. Besides the semantic patch, there was some manual work required: - Fix up the actual hlist iterators in linux/list.h - Fix up the declaration of other iterators based on the hlist ones. - A very small amount of places were using the 'node' parameter, this was modified to use 'obj->member' instead. - Coccinelle didn't handle the hlist_for_each_entry_safe iterator properly, so those had to be fixed up manually. The semantic patch which is mostly the work of Peter Senna Tschudin is here: @@ iterator name hlist_for_each_entry, hlist_for_each_entry_continue, hlist_for_each_entry_from, hlist_for_each_entry_rcu, hlist_for_each_entry_rcu_bh, hlist_for_each_entry_continue_rcu_bh, for_each_busy_worker, ax25_uid_for_each, ax25_for_each, inet_bind_bucket_for_each, sctp_for_each_hentry, sk_for_each, sk_for_each_rcu, sk_for_each_from, sk_for_each_safe, sk_for_each_bound, hlist_for_each_entry_safe, hlist_for_each_entry_continue_rcu, nr_neigh_for_each, nr_neigh_for_each_safe, nr_node_for_each, nr_node_for_each_safe, for_each_gfn_indirect_valid_sp, for_each_gfn_sp, for_each_host; type T; expression a,c,d,e; identifier b; statement S; @@ -T b; <+... when != b ( hlist_for_each_entry(a, - b, c, d) S | hlist_for_each_entry_continue(a, - b, c) S | hlist_for_each_entry_from(a, - b, c) S | hlist_for_each_entry_rcu(a, - b, c, d) S | hlist_for_each_entry_rcu_bh(a, - b, c, d) S | hlist_for_each_entry_continue_rcu_bh(a, - b, c) S | for_each_busy_worker(a, c, - b, d) S | ax25_uid_for_each(a, - b, c) S | ax25_for_each(a, - b, c) S | inet_bind_bucket_for_each(a, - b, c) S | sctp_for_each_hentry(a, - b, c) S | sk_for_each(a, - b, c) S | sk_for_each_rcu(a, - b, c) S | sk_for_each_from -(a, b) +(a) S + sk_for_each_from(a) S | sk_for_each_safe(a, - b, c, d) S | sk_for_each_bound(a, - b, c) S | hlist_for_each_entry_safe(a, - b, c, d, e) S | hlist_for_each_entry_continue_rcu(a, - b, c) S | nr_neigh_for_each(a, - b, c) S | nr_neigh_for_each_safe(a, - b, c, d) S | nr_node_for_each(a, - b, c) S | nr_node_for_each_safe(a, - b, c, d) S | - for_each_gfn_sp(a, c, d, b) S + for_each_gfn_sp(a, c, d) S | - for_each_gfn_indirect_valid_sp(a, c, d, b) S + for_each_gfn_indirect_valid_sp(a, c, d) S | for_each_host(a, - b, c) S | for_each_host_safe(a, - b, c, d) S | for_each_mesh_entry(a, - b, c, d) S ) ...+> [akpm@linux-foundation.org: drop bogus change from net/ipv4/raw.c] [akpm@linux-foundation.org: drop bogus hunk from net/ipv6/raw.c] [akpm@linux-foundation.org: checkpatch fixes] [akpm@linux-foundation.org: fix warnings] [akpm@linux-foudnation.org: redo intrusive kvm changes] Tested-by: Peter Senna Tschudin <peter.senna@gmail.com> Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Signed-off-by: Sasha Levin <sasha.levin@oracle.com> Cc: Wu Fengguang <fengguang.wu@intel.com> Cc: Marcelo Tosatti <mtosatti@redhat.com> Cc: Gleb Natapov <gleb@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-02-27kcmp: make it depend on CHECKPOINT_RESTORECyrill Gorcunov
Since kcmp syscall has been implemented (initially on x86 architecture) a number of other archs wire it up as well: xtensa, sparc, sh, s390, mips, microblaze, m68k (not taking into account those who uses <asm-generic/unistd.h> for syscall numbers definitions). But the Makefile, which turns kcmp.o generation on still depends on former config-x86. Thus get rid of this limitation and make kcmp.o depend on CHECKPOINT_RESTORE option. Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org> Cc: Pavel Emelyanov <xemul@parallels.com> Cc: Andrey Vagin <avagin@openvz.org> Cc: "H. Peter Anvin" <hpa@zytor.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-02-27selftests: add a simple docJeremy Kerr
This change adds a little documentation to the tests under tools/testing/selftests/, based on akpm's explanation. [akpm@linux-foundation.org: move from Documentation to tools/testing/selftests/README.txt] Signed-off-by: Jeremy Kerr <jk@ozlabs.org> Cc: Dave Young <dyoung@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-02-27tools/testing/selftests/Makefile: rearrange targetsAndrew Morton
Do it one-per-line to reduce patch conflict pain. Cc: Dave Young <dyoung@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-02-27selftests/efivarfs: add create-read testJeremy Kerr
Test that reads from a newly-created efivarfs file (with no data written) will return EOF. Signed-off-by: Jeremy Kerr <jk@ozlabs.org> Cc: Matt Fleming <matt.fleming@intel.com> Cc: Lingzhu Xiang <lxiang@redhat.com> Cc: Dave Young <dyoung@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-02-27selftests/efivarfs: add empty file creation testJeremy Kerr
Signed-off-by: Jeremy Kerr <jk@ozlabs.org> Cc: Matt Fleming <matt.fleming@intel.com> Cc: Lingzhu Xiang <lxiang@redhat.com> Cc: Dave Young <dyoung@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-02-27selftests: add tests for efivarfsJeremy Kerr
This change adds a few initial efivarfs tests to the tools/testing/selftests directory. The open-unlink test is based on code from Lingzhu Xiang. Signed-off-by: Jeremy Kerr <jk@ozlabs.org> Cc: Matt Fleming <matt.fleming@intel.com> Cc: Lingzhu Xiang <lxiang@redhat.com> Cc: Dave Young <dyoung@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-02-27kfifo: fix kfifo_alloc() and kfifo_init()Stefani Seibold
Fix kfifo_alloc() and kfifo_init() to alloc at least the requested number of elements. Since the kfifo operates on power of 2 the request size will be rounded up to the next power of two. Signed-off-by: Stefani Seibold <stefani@seibold.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-02-27kfifo: move kfifo.c from kernel/ to lib/Stefani Seibold
Move kfifo.c from kernel/ to lib/ Signed-off-by: Stefani Seibold <stefani@seibold.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-02-27arch Kconfig: centralise CONFIG_ARCH_NO_VIRT_TO_BUSStephen Rothwell
Change it to CONFIG_HAVE_VIRT_TO_BUS and set it in all architecures that already provide virt_to_bus(). Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Reviewed-by: James Hogan <james.hogan@imgtec.com> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: H Hartley Sweeten <hartleys@visionengravers.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: "David S. Miller" <davem@davemloft.net> Cc: Paul Mundt <lethal@linux-sh.org> Cc: Vineet Gupta <Vineet.Gupta1@synopsys.com> Cc: James Bottomley <James.Bottomley@HansenPartnership.com> Cc: <linux-arch@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-02-27w1: add support for DS2413 Dual Channel Addressable SwitchMariusz Bialonczyk
Also fixes some whitespace inconsistency in Kconfig and w1_family.h when DS2408 chip support was added. Signed-off-by: Mariusz Bialonczyk <manio@skyboo.net> Acked-by: Evgeniy Polyakov <zbr@ioremap.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-02-27memstick: move the dereference below the NULL testWei Yongjun
The dereference should be moved below the NULL test. spatch with a semantic match is used to found this. (http://coccinelle.lip6.fr/) Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn> Cc: Maxim Levitsky <maximlevitsky@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-02-27drivers/pps/clients/pps-gpio.c: use devm_kzallocJulia Lawall
devm_kzalloc allocates memory that is released when a driver detaches. This patch uses devm_kzalloc for data that is allocated in the probe function of a platform device and is only freed in the remove function. Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Cc: Rodolfo Giometti <giometti@enneenne.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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