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2008-11-20Merge 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: (23 commits) net: fix tiny output corruption of /proc/net/snmp6 atl2: don't request irq on resume if netif running ipv6: use seq_release_private for ip6mr.c /proc entries pkt_sched: fix missing check for packet overrun in qdisc_dump_stab() smc911x: Fix printf format typo in smc911x driver. asix: Fix asix-based cards connecting to 10/100Mbs LAN. mv643xx_eth: fix recycle check bound mv643xx_eth: fix the order of mdiobus_{unregister, free}() calls sh: sh_eth: Update to change of mii_bus TPROXY: supply a struct flowi->flags argument in inet_sk_rebuild_header() TPROXY: fill struct flowi->flags in udp_sendmsg() net: ipg.c fix bracing on endian swapping phylib: Fix auto-negotiation restart avoidance net: jme.c rxdesc.flags is __le16, other missing endian swaps phylib: fix phy name example in documentation net: Do not fire linkwatch events until the device is registered. phonet: fix compilation with gcc-3.4 ixgbe: fix compilation with gcc-3.4 pktgen: fix multiple queue warning net: fix ip_mr_init() error path ...
2008-11-20Merge branch 'master' of ↵David S. Miller
git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-2.6
2008-11-19Merge 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: x86: more general identifier for Phoenix BIOS AMD IOMMU: check for next_bit also in unmapped area AMD IOMMU: fix fullflush comparison length AMD IOMMU: enable device isolation per default AMD IOMMU: add parameter to disable device isolation x86, PEBS/DS: fix code flow in ds_request() x86: add rdtsc barrier to TSC sync check xen: fix scrub_page() x86: fix es7000 compiling x86, bts: fix unlock problem in ds.c x86, voyager: fix smp generic helper voyager breakage x86: move iomap.h to the new include location
2008-11-19cpuset: update top cpuset's mems after adding a nodeMiao Xie
After adding a node into the machine, top cpuset's mems isn't updated. By reviewing the code, we found that the update function cpuset_track_online_nodes() was invoked after node_states[N_ONLINE] changes. It is wrong because N_ONLINE just means node has pgdat, and if node has/added memory, we use N_HIGH_MEMORY. So, We should invoke the update function after node_states[N_HIGH_MEMORY] changes, just like its commit says. This patch fixes it. And we use notifier of memory hotplug instead of direct calling of cpuset_track_online_nodes(). Signed-off-by: Miao Xie <miaox@cn.fujitsu.com> Acked-by: Yasunori Goto <y-goto@jp.fujitsu.com> Cc: David Rientjes <rientjes@google.com> Cc: Paul Menage <menage@google.com Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-11-19reintroduce accept4Ulrich Drepper
Introduce a new accept4() system call. The addition of this system call matches analogous changes in 2.6.27 (dup3(), evenfd2(), signalfd4(), inotify_init1(), epoll_create1(), pipe2()) which added new system calls that differed from analogous traditional system calls in adding a flags argument that can be used to access additional functionality. The accept4() system call is exactly the same as accept(), except that it adds a flags bit-mask argument. Two flags are initially implemented. (Most of the new system calls in 2.6.27 also had both of these flags.) SOCK_CLOEXEC causes the close-on-exec (FD_CLOEXEC) flag to be enabled for the new file descriptor returned by accept4(). This is a useful security feature to avoid leaking information in a multithreaded program where one thread is doing an accept() at the same time as another thread is doing a fork() plus exec(). More details here: http://udrepper.livejournal.com/20407.html "Secure File Descriptor Handling", Ulrich Drepper). The other flag is SOCK_NONBLOCK, which causes the O_NONBLOCK flag to be enabled on the new open file description created by accept4(). (This flag is merely a convenience, saving the use of additional calls fcntl(F_GETFL) and fcntl (F_SETFL) to achieve the same result. Here's a test program. Works on x86-32. Should work on x86-64, but I (mtk) don't have a system to hand to test with. It tests accept4() with each of the four possible combinations of SOCK_CLOEXEC and SOCK_NONBLOCK set/clear in 'flags', and verifies that the appropriate flags are set on the file descriptor/open file description returned by accept4(). I tested Ulrich's patch in this thread by applying against 2.6.28-rc2, and it passes according to my test program. /* test_accept4.c Copyright (C) 2008, Linux Foundation, written by Michael Kerrisk <mtk.manpages@gmail.com> Licensed under the GNU GPLv2 or later. */ #define _GNU_SOURCE #include <unistd.h> #include <sys/syscall.h> #include <sys/socket.h> #include <netinet/in.h> #include <stdlib.h> #include <fcntl.h> #include <stdio.h> #include <string.h> #define PORT_NUM 33333 #define die(msg) do { perror(msg); exit(EXIT_FAILURE); } while (0) /**********************************************************************/ /* The following is what we need until glibc gets a wrapper for accept4() */ /* Flags for socket(), socketpair(), accept4() */ #ifndef SOCK_CLOEXEC #define SOCK_CLOEXEC O_CLOEXEC #endif #ifndef SOCK_NONBLOCK #define SOCK_NONBLOCK O_NONBLOCK #endif #ifdef __x86_64__ #define SYS_accept4 288 #elif __i386__ #define USE_SOCKETCALL 1 #define SYS_ACCEPT4 18 #else #error "Sorry -- don't know the syscall # on this architecture" #endif static int accept4(int fd, struct sockaddr *sockaddr, socklen_t *addrlen, int flags) { printf("Calling accept4(): flags = %x", flags); if (flags != 0) { printf(" ("); if (flags & SOCK_CLOEXEC) printf("SOCK_CLOEXEC"); if ((flags & SOCK_CLOEXEC) && (flags & SOCK_NONBLOCK)) printf(" "); if (flags & SOCK_NONBLOCK) printf("SOCK_NONBLOCK"); printf(")"); } printf("\n"); #if USE_SOCKETCALL long args[6]; args[0] = fd; args[1] = (long) sockaddr; args[2] = (long) addrlen; args[3] = flags; return syscall(SYS_socketcall, SYS_ACCEPT4, args); #else return syscall(SYS_accept4, fd, sockaddr, addrlen, flags); #endif } /**********************************************************************/ static int do_test(int lfd, struct sockaddr_in *conn_addr, int closeonexec_flag, int nonblock_flag) { int connfd, acceptfd; int fdf, flf, fdf_pass, flf_pass; struct sockaddr_in claddr; socklen_t addrlen; printf("=======================================\n"); connfd = socket(AF_INET, SOCK_STREAM, 0); if (connfd == -1) die("socket"); if (connect(connfd, (struct sockaddr *) conn_addr, sizeof(struct sockaddr_in)) == -1) die("connect"); addrlen = sizeof(struct sockaddr_in); acceptfd = accept4(lfd, (struct sockaddr *) &claddr, &addrlen, closeonexec_flag | nonblock_flag); if (acceptfd == -1) { perror("accept4()"); close(connfd); return 0; } fdf = fcntl(acceptfd, F_GETFD); if (fdf == -1) die("fcntl:F_GETFD"); fdf_pass = ((fdf & FD_CLOEXEC) != 0) == ((closeonexec_flag & SOCK_CLOEXEC) != 0); printf("Close-on-exec flag is %sset (%s); ", (fdf & FD_CLOEXEC) ? "" : "not ", fdf_pass ? "OK" : "failed"); flf = fcntl(acceptfd, F_GETFL); if (flf == -1) die("fcntl:F_GETFD"); flf_pass = ((flf & O_NONBLOCK) != 0) == ((nonblock_flag & SOCK_NONBLOCK) !=0); printf("nonblock flag is %sset (%s)\n", (flf & O_NONBLOCK) ? "" : "not ", flf_pass ? "OK" : "failed"); close(acceptfd); close(connfd); printf("Test result: %s\n", (fdf_pass && flf_pass) ? "PASS" : "FAIL"); return fdf_pass && flf_pass; } static int create_listening_socket(int port_num) { struct sockaddr_in svaddr; int lfd; int optval; memset(&svaddr, 0, sizeof(struct sockaddr_in)); svaddr.sin_family = AF_INET; svaddr.sin_addr.s_addr = htonl(INADDR_ANY); svaddr.sin_port = htons(port_num); lfd = socket(AF_INET, SOCK_STREAM, 0); if (lfd == -1) die("socket"); optval = 1; if (setsockopt(lfd, SOL_SOCKET, SO_REUSEADDR, &optval, sizeof(optval)) == -1) die("setsockopt"); if (bind(lfd, (struct sockaddr *) &svaddr, sizeof(struct sockaddr_in)) == -1) die("bind"); if (listen(lfd, 5) == -1) die("listen"); return lfd; } int main(int argc, char *argv[]) { struct sockaddr_in conn_addr; int lfd; int port_num; int passed; passed = 1; port_num = (argc > 1) ? atoi(argv[1]) : PORT_NUM; memset(&conn_addr, 0, sizeof(struct sockaddr_in)); conn_addr.sin_family = AF_INET; conn_addr.sin_addr.s_addr = htonl(INADDR_LOOPBACK); conn_addr.sin_port = htons(port_num); lfd = create_listening_socket(port_num); if (!do_test(lfd, &conn_addr, 0, 0)) passed = 0; if (!do_test(lfd, &conn_addr, SOCK_CLOEXEC, 0)) passed = 0; if (!do_test(lfd, &conn_addr, 0, SOCK_NONBLOCK)) passed = 0; if (!do_test(lfd, &conn_addr, SOCK_CLOEXEC, SOCK_NONBLOCK)) passed = 0; close(lfd); exit(passed ? EXIT_SUCCESS : EXIT_FAILURE); } [mtk.manpages@gmail.com: rewrote changelog, updated test program] Signed-off-by: Ulrich Drepper <drepper@redhat.com> Tested-by: Michael Kerrisk <mtk.manpages@gmail.com> Acked-by: Michael Kerrisk <mtk.manpages@gmail.com> Cc: <linux-api@vger.kernel.org> Cc: <linux-arch@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-11-18mac80211: remove ieee80211_notify_macJohannes Berg
Before ieee80211_notify_mac() was added, it was presented with the use case of using it to tell mac80211 that the association may have been lost because the firmware crashed/reset. Since then, it has also been used by iwlwifi to (slightly) speed up re-association after resume, a workaround around the fact that mac80211 has no suspend/resume handling yet. It is also not used by any other drivers, so clearly it cannot be necessary for "good enough" suspend/resume. Unfortunately, the callback suffers from a severe problem: It only works for station mode. If suspend/resume happens while in IBSS or any other mode (but station), then the callback is pointless. Recently, it has created a number of locking issues, first because it required rtnl locking rather than RCU due to calling sleeping functions within the critical section, and now because it's called by iwlwifi from the mac80211 workqueue that may not use the rtnl because it is flushed under rtnl. (cf. http://bugzilla.kernel.org/show_bug.cgi?id=12046) I think, therefore, that we should take a step back, remove it entirely for now and add the small feature it provided properly. For suspend and resume we will need to introduce new hooks, and for the case where the firmware was reset the driver will probably simply just pretend it has done a suspend/resume cycle to get mac80211 to reprogram the hardware completely, not just try to connect to the current AP again in station mode. When doing so, we will need to take into account locking issues and possibly defer to schedule_work from within mac80211 for the resume operation, while the suspend operation must be done directly. Proper suspend/resume should also not necessarily try to reconnect to the current AP, the time spent in suspend may have been short enough to not be disconnected from the AP, mac80211 will detect that the AP went out of range quickly if it did, and if the association is lost then the AP will disassoc as soon as a data frame is sent. We might also take into account WWOL then, and have mac80211 program the hardware into such a mode where it is available and requested. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-11-18Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-blockLinus Torvalds
* 'for-linus' of git://git.kernel.dk/linux-2.6-block: block: hold extra reference to bio in blk_rq_map_user_iov() relay: fix cpu offline problem Release old elevator on change elevator block: fix boot failure with CONFIG_DEBUG_BLOCK_EXT_DEVT=y and nash block/md: fix md autodetection block: make add_partition() return pointer to hd_struct block: fix add_partition() error path
2008-11-18Merge branch 'tracing-fixes-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'tracing-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: kernel/profile.c: fix section mismatch warning function tracing: fix wrong pos computing when read buffer has been fulfilled tracing: fix mmiotrace resizing crash ring-buffer: no preempt for sched_clock() ring-buffer: buffer record on/off switch
2008-11-18Merge branch 'iommu-fixes-2.6.28' of ↵Ingo Molnar
git://git.kernel.org/pub/scm/linux/kernel/git/joro/linux-2.6-iommu into x86/urgent
2008-11-18block: make add_partition() return pointer to hd_structTejun Heo
Make add_partition() return pointer to the new hd_struct on success and ERR_PTR() value on failure. This change will be used to fix md autodetection bug. Signed-off-by: Tejun Heo <tj@kernel.org> Cc: Neil Brown <neilb@suse.de> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2008-11-17Merge 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: (27 commits) rtnetlink: propagate error from dev_change_flags in do_setlink() isdn: remove extra byteswap in isdn_net_ciscohdlck_slarp_send_reply Phonet: refuse to send bigger than MTU packets e1000e: fix IPMI traffic e1000e: fix warn_on reload after phy_id error phy: fix phy address bug e100: fix dma error in direction for mapping igb: use dev_printk instead of printk qla3xxx: Cleanup: Fix link print statements. igb: Use device_set_wakeup_enable e1000: Use device_set_wakeup_enable e1000e: Use device_set_wakeup_enable via-velocity: enable perfect filtering for multicast packets phy: Add support for Marvell 88E1118 PHY mlx4_en: Pause parameters per port phylib: fix premature freeing of struct mii_bus atl1: Do not enumerate options unsupported by chip atl1e: fix broken multicast by removing unnecessary crc inversion gianfar: Fix DMA unmap invocations net/ucc_geth: Fix oops in uec_get_ethtool_stats() ...
2008-11-15Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid: HID: don't grab devices with no input HID: fix radio-mr800 hidquirks HID: fix kworld fm700 radio hidquirks HID: fix start/stop cycle in usbhid driver HID: use single threaded work queue for hid_compat HID: map macbook keys for "Expose" and "Dashboard" HID: support for new unibody macbooks HID: fix locking in hidraw_open()
2008-11-15Fix inotify watch removal/umount racesAl Viro
Inotify watch removals suck violently. To kick the watch out we need (in this order) inode->inotify_mutex and ih->mutex. That's fine if we have a hold on inode; however, for all other cases we need to make damn sure we don't race with umount. We can *NOT* just grab a reference to a watch - inotify_unmount_inodes() will happily sail past it and we'll end with reference to inode potentially outliving its superblock. Ideally we just want to grab an active reference to superblock if we can; that will make sure we won't go into inotify_umount_inodes() until we are done. Cleanup is just deactivate_super(). However, that leaves a messy case - what if we *are* racing with umount() and active references to superblock can't be acquired anymore? We can bump ->s_count, grab ->s_umount, which will almost certainly wait until the superblock is shut down and the watch in question is pining for fjords. That's fine, but there is a problem - we might have hit the window between ->s_active getting to 0 / ->s_count - below S_BIAS (i.e. the moment when superblock is past the point of no return and is heading for shutdown) and the moment when deactivate_super() acquires ->s_umount. We could just do drop_super() yield() and retry, but that's rather antisocial and this stuff is luser-triggerable. OTOH, having grabbed ->s_umount and having found that we'd got there first (i.e. that ->s_root is non-NULL) we know that we won't race with inotify_umount_inodes(). So we could grab a reference to watch and do the rest as above, just with drop_super() instead of deactivate_super(), right? Wrong. We had to drop ih->mutex before we could grab ->s_umount. So the watch could've been gone already. That still can be dealt with - we need to save watch->wd, do idr_find() and compare its result with our pointer. If they match, we either have the damn thing still alive or we'd lost not one but two races at once, the watch had been killed and a new one got created with the same ->wd at the same address. That couldn't have happened in inotify_destroy(), but inotify_rm_wd() could run into that. Still, "new one got created" is not a problem - we have every right to kill it or leave it alone, whatever's more convenient. So we can use idr_find(...) == watch && watch->inode->i_sb == sb as "grab it and kill it" check. If it's been our original watch, we are fine, if it's a newcomer - nevermind, just pretend that we'd won the race and kill the fscker anyway; we are safe since we know that its superblock won't be going away. And yes, this is far beyond mere "not very pretty"; so's the entire concept of inotify to start with. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Acked-by: Greg KH <greg@kroah.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-11-15Merge branch 'sh/for-2.6.28' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6 * 'sh/for-2.6.28' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6: serial: sh-sci: Reorder the SCxTDR write after the TDxE clear. sh: __copy_user function can corrupt the stack in case of exception sh: Fixed the TMU0 reload value on resume sh: Don't factor in PAGE_OFFSET for valid_phys_addr_range() check. sh: early printk port type fix i2c: fix i2c-sh_mobile rx underrun sh: Provide a sane valid_phys_addr_range() to prevent TLB reset with PMB. usb: r8a66597-hcd: fix wrong data access in SuperH on-chip USB fix sci type for SH7723 serial: sh-sci: fix cannot work SH7723 SCIFA sh: Handle fixmap TLB eviction more coherently.
2008-11-15Add 'pr_fmt()' format modifier to pr_xyz macros.Martin Schwidefsky
A common reason for device drivers to implement their own printk macros is the lack of a printk prefix with the standard pr_xyz macros. Introduce a pr_fmt() macro that is applied for every pr_xyz macro to the format string. The most common use of the pr_fmt macro would be to add the name of the device driver to all pr_xyz messages in a source file. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-11-13lockdep: include/linux/lockdep.h - fix warning in net/bluetooth/af_bluetooth.cIngo Molnar
fix this warning: net/bluetooth/af_bluetooth.c:60: warning: ‘bt_key_strings’ defined but not used net/bluetooth/af_bluetooth.c:71: warning: ‘bt_slock_key_strings’ defined but not used this is a lockdep macro problem in the !LOCKDEP case. We cannot convert it to an inline because the macro works on multiple types, but we can mark the parameter used. [ also clean up a misaligned tab in sock_lock_init_class_and_name() ] [ also remove #ifdefs from around af_family_clock_key strings - which were certainly added to get rid of the ugly build warnings. ] Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-13USB: don't register endpoints for interfaces that are going awayAlan Stern
This patch (as1155) fixes a bug in usbcore. When interfaces are deleted, either because the device was disconnected or because of a configuration change, the extra attribute files and child endpoint devices may get left behind. This is because the core removes them before calling device_del(). But during device_del(), after the driver is unbound the core will reinstall altsetting 0 and recreate those extra attributes and children. The patch prevents this by adding a flag to record when the interface is in the midst of being unregistered. When the flag is set, the attribute files and child devices will not be created. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Cc: stable <stable@kernel.org> [2.6.27, 2.6.26, 2.6.25] Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2008-11-13slab: document SLAB_DESTROY_BY_RCUPeter Zijlstra
Explain this SLAB_DESTROY_BY_RCU thing... [hugh@veritas.com: add a pointer to comment in mm/slab.c] Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Acked-by: Jens Axboe <jens.axboe@oracle.com> Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Acked-by: Christoph Lameter <cl@linux-foundation.org> Signed-off-by: Hugh Dickins <hugh@veritas.com> Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
2008-11-13HID: map macbook keys for "Expose" and "Dashboard"Henrik Rydberg
On macbooks there are specific keys for the user-space functions Expose and Dashboard, which currently has no counterpart in input.h. This patch adds KEY_SCALE and KEY_DASHBOARD, and maps the keyboard accordingly. Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Signed-off-by: Henrik Rydberg <rydberg@euromail.se> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2008-11-12Add c2 port supportRodolfo Giometti
C2port implements a two wire serial communication protocol (bit banging) designed to enable in-system programming, debugging, and boundary-scan testing on low pin-count Silicon Labs devices. Currently this code supports only flash programming through sysfs interface but extensions shoud be easy to add. Signed-off-by: Rodolfo Giometti <giometti@linux.it> Cc: Greg KH <greg@kroah.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-11-12rtc: rtc-wm8350: add support for WM8350 RTCMark Brown
This adds support for the RTC provided by the Wolfson Microelectronics WM8350. This driver was originally written by Graeme Gregory and Liam Girdwood, though it has been modified since then to update it to current mainline coding standards and for API completeness. [akpm@linux-foundation.org: s/schedule_timeout_interruptible/schedule_timeout_uninterruptible/ to prevent bogus timeout when signal_pending()] Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Cc: David Brownell <david-b@pacbell.net> Cc: Liam Girdwood <linux@wolfsonmicro.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-11-12remove ratelimt()Andrew Morton
It mistakenly assumes that a static local in an inlined function is a kernel-wide singleton. It also has no callers, so let's remove it. Cc: Dave Young <hidave.darkstar@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-11-12atmel_lcdfb: change irq_base definition to allow error reportingNicolas Ferre
Changed because old the definition of unsigned long cannot be negative. Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com> Reported-by: Roel Kluin <roel.kluin@gmail.com> Cc: Haavard Skinnemoen <hskinnemoen@atmel.com> Cc: Andrew Victor <linux@maxim.org.za> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-11-12Merge 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: hrtimer: clean up unused callback modes
2008-11-12Merge branch 'release' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6 * 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6: (47 commits) ACPI: pci_link: remove acpi_irq_balance_set() interface fujitsu-laptop: Add DMI callback for Lifebook S6420 ACPI: EC: Don't do transaction from GPE handler in poll mode. ACPI: EC: lower interrupt storm treshold ACPICA: Use spinlock for acpi_{en|dis}able_gpe ACPI: EC: restart failed command ACPI: EC: wait for last write gpe ACPI: EC: make kernel messages more useful when GPE storm is detected ACPI: EC: revert msleep patch thinkpad_acpi: fingers off backlight if video.ko is serving this functionality sony-laptop: fingers off backlight if video.ko is serving this functionality msi-laptop: fingers off backlight if video.ko is serving this functionality fujitsu-laptop: fingers off backlight if video.ko is serving this functionality eeepc-laptop: fingers off backlight if video.ko is serving this functionality compal: fingers off backlight if video.ko is serving this functionality asus-acpi: fingers off backlight if video.ko is serving this functionality Acer-WMI: fingers off backlight if video.ko is serving this functionality ACPI video: if no ACPI backlight support, use vendor drivers ACPI: video: Ignore devices that aren't present in hardware Delete an unwanted return statement at evgpe.c ...
2008-11-12hrtimer: clean up unused callback modesPeter Zijlstra
Impact: cleanup git grep HRTIMER_CB_IRQSAFE revealed half the callback modes are actually unused. Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-11-12serial: sh-sci: fix cannot work SH7723 SCIFAYoshihiro Shimoda
SH7723 has SCIFA. This module is similer SCI register map, but it has FIFO. So this patch adds new type(PORT_SCIFA) and change some type checking. Signed-off-by: Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-11-11Merge branch 'ec' into releaseLen Brown
2008-11-11Merge branch 'processor-256' into releaseLen Brown
2008-11-11Merge branch 'video' into releaseLen Brown
Conflicts: Documentation/kernel-parameters.txt Signed-off-by: Len Brown <len.brown@intel.com>
2008-11-11Merge branch 'misc' into releaseLen Brown
2008-11-11Merge branch 'bugzilla-11312' into releaseLen Brown
2008-11-11ACPICA: Use spinlock for acpi_{en|dis}able_gpeAlexey Starikovskiy
Disabling gpe might interfere with gpe detection/handling, thus producing "interrupt not handled" errors. Ironically, disabling of GPE from interrupt context is already under spinlock, so only userspace needs to start using it. Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: Len Brown <len.brown@intel.com>
2008-11-11Merge branch 'devel' of ↵Ingo Molnar
git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-2.6-trace into tracing/urgent
2008-11-11ring-buffer: buffer record on/off switchSteven Rostedt
Impact: enable/disable ring buffer recording API added Several kernel developers have requested that there be a way to stop recording into the ring buffers with a simple switch that can also be enabled from userspace. This patch addes a new kernel API to the ring buffers called: tracing_on() tracing_off() When tracing_off() is called, all ring buffers will not be able to record into their buffers. tracing_on() will enable the ring buffers again. These two act like an on/off switch. That is, there is no counting of the number of times tracing_off or tracing_on has been called. A new file is added to the debugfs/tracing directory called tracing_on This allows for userspace applications to also flip the switch. echo 0 > debugfs/tracing/tracing_on disables the tracing. echo 1 > /debugfs/tracing/tracing_on enables it. Note, this does not disable or enable any tracers. It only sets or clears a flag that needs to be set in order for the ring buffers to write to their buffers. It is a global flag, and affects all ring buffers. The buffers start out with tracing_on enabled. There are now three flags that control recording into the buffers: tracing_on: which affects all ring buffer tracers. buffer->record_disabled: which affects an allocated buffer, which may be set if an anomaly is detected, and tracing is disabled. cpu_buffer->record_disabled: which is set by tracing_stop() or if an anomaly is detected. tracing_start can not reenable this if an anomaly occurred. The userspace debugfs/tracing/tracing_enabled is implemented with tracing_stop() but the user space code can not enable it if the kernel called tracing_stop(). Userspace can enable the tracing_on even if the kernel disabled it. It is just a switch used to stop tracing if a condition was hit. tracing_on is not for protecting critical areas in the kernel nor is it for stopping tracing if an anomaly occurred. This is because userspace can reenable it at any time. Side effect: With this patch, I discovered a dead variable in ftrace.c called tracing_on. This patch removes it. Signed-off-by: Steven Rostedt <srostedt@redhat.com>
2008-11-11Merge branch 'sched-fixes-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'sched-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: sched: release buddies on yield fix for account_group_exec_runtime(), make sure ->signal can't be freed under rq->lock sched: clean up debug info
2008-11-11telephony: trivial: fix up email addressAlan Cox
Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-11-11Merge 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: Move legacy breadcrumb out of the reserved status page area drm/i915: Filter pci devices based on PCI_CLASS_DISPLAY_VGA drm/radeon: map registers at load time drm: Remove infrastructure for supporting i915's vblank swapping. i915: Remove racy delayed vblank swap ioctl. i915: Don't whine when pci_enable_msi() fails. i915: Don't attempt to short-circuit object_wait_rendering by checking domains. i915: Clean up sarea pointers on leavevt i915: Save/restore MCHBAR_RENDER_STANDBY on GM965/GM45
2008-11-11Merge 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: dsa: fix master interface allmulti/promisc handling dsa: fix skb->pkt_type when mac address of slave interface differs net: fix setting of skb->tail in skb_recycle_check() net: fix /proc/net/snmp as memory corruptor mac80211: fix a buffer overrun in station debug code netfilter: payload_len is be16, add size of struct rather than size of pointer ipv6: fix ip6_mr_init error path [4/4] dca: fixup initialization dependency [3/4] I/OAT: fix async_tx.callback checking [2/4] I/OAT: fix dma_pin_iovec_pages() error handling [1/4] I/OAT: fix channel resources free for not allocated channels ssb: Fix DMA-API compilation for non-PCI systems SSB: hide empty sub menu vlan: Fix typos in proc output string [netdrvr] usb/hso: Cleanup rfkill error handling sfc: Correct address of gPXE boot configuration in EEPROM el3_common_init() should be __devinit, not __init hso: rfkill type should be WWAN mlx4_en: Start port error flow bug fix af_key: mark policy as dead before destroying
2008-11-11drm/i915: Filter pci devices based on PCI_CLASS_DISPLAY_VGADave Airlie
This fixes hangs on 855-class hardware by avoiding double attachment of the driver due to the stub second head device having the same pci id as the real device. Other DRM drivers probably want this treatment as well, but I'm applying it just to this one for safety. But we should clean up the drm_pciids.h mess now so that each driver has its own pci id list header in its own directory. Lets do that in the next release. Signed-off-by: Eric Anholt <eric@anholt.net> Signed-off-by: Dave Airlie <airlied@redhat.com>
2008-11-11drm: Remove infrastructure for supporting i915's vblank swapping.Eric Anholt
It's not used in any other drivers, and doesn't look like it will be from drm.git master. Signed-off-by: Eric Anholt <eric@anholt.net> Signed-off-by: Dave Airlie <airlied@linux.ie>
2008-11-11fix for account_group_exec_runtime(), make sure ->signal can't be freed ↵Oleg Nesterov
under rq->lock Impact: fix hang/crash on ia64 under high load This is ugly, but the simplest patch by far. Unlike other similar routines, account_group_exec_runtime() could be called "implicitly" from within scheduler after exit_notify(). This means we can race with the parent doing release_task(), we can't just check ->signal != NULL. Change __exit_signal() to do spin_unlock_wait(&task_rq(tsk)->lock) before __cleanup_signal() to make sure ->signal can't be freed under task_rq(tsk)->lock. Note that task_rq_unlock_wait() doesn't care about the case when tsk changes cpu/rq under us, this should be OK. Thanks to Ingo who nacked my previous buggy patch. Signed-off-by: Oleg Nesterov <oleg@redhat.com> Acked-by: Peter Zijlstra <peterz@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu> Reported-by: Doug Chapman <doug.chapman@hp.com>
2008-11-10ssb: Fix DMA-API compilation for non-PCI systemsMichael Buesch
This fixes compilation of the SSB DMA-API code on non-PCI platforms. Signed-off-by: Michael Buesch <mb@bu3sch.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-10Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6: ALSA: hda - Make the HP EliteBook 8530p use AD1884A model laptop ALSA: gusextreme: Fix build errors ALSA: hdsp: check for iobox and upload firmware during ioctl ALSA: HDSP: check for io box before uploading firmware ALSA: hda - Add another HP model (6730s) for AD1884A alsa: fix snd_BUG_on() and friends ALSA: hda - Add a quirk for MEDION MD96630 ALSA: hda - Limit the number of GPIOs show in proc
2008-11-10Merge branches 'topic/fix/misc' and 'topic/fix/hda' into for-linusTakashi Iwai
2008-11-10libata: revert convert-to-block-tagging patchesTejun Heo
This patch reverts the following three commits which convert libata to use block layer tagging. 43a49cbdf31e812c0d8f553d433b09b421f5d52c e013e13bf605b9e6b702adffbe2853cfc60e7806 2fca5ccf97d2c28bcfce44f5b07d85e74e3cd18e Although using block layer tagging is the right direction, due to the tight coupling among tag number, data structure allocation and hardware command slot allocation, libata doesn't work correctly with the current conversion. The biggest problem is guaranteeing that tag 0 is always used for non-NCQ commands. Due to the way blk-tag is implemented and how SCSI starts and finishes requests, such guarantee can't be made. I'm not sure whether this would actually break any low level driver but it doesn't look like a good idea to break such assumption given the frailty of ATA controllers. So, for the time being, keep using the old dumb in-libata qc allocation. Signed-off-by: Tejun Heo <tj@kernel.org> Cc: Jens Axobe <jens.axboe@oracle.com> Cc: Jeff Garzik <jeff@garzik.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-11-09Merge branch 'cpus4096' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'cpus4096' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: cpumask: introduce new API, without changing anything, v3 cpumask: new API, v2 cpumask: introduce new API, without changing anything
2008-11-09cpumask: introduce new API, without changing anything, v3Rusty Russell
Impact: cleanup Clean up based on feedback from Andrew Morton and others: - change to inline functions instead of macros - add __init to bootmem method - add a missing debug check Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-11-09net: unix: fix inflight counting bug in garbage collectorMiklos Szeredi
Previously I assumed that the receive queues of candidates don't change during the GC. This is only half true, nothing can be received from the queues (see comment in unix_gc()), but buffers could be added through the other half of the socket pair, which may still have file descriptors referring to it. This can result in inc_inflight_move_tail() erronously increasing the "inflight" counter for a unix socket for which dec_inflight() wasn't previously called. This in turn can trigger the "BUG_ON(total_refs < inflight_refs)" in a later garbage collection run. Fix this by only manipulating the "inflight" counter for sockets which are candidates themselves. Duplicating the file references in unix_attach_fds() is also needed to prevent a socket becoming a candidate for GC while the skb that contains it is not yet queued. Reported-by: Andrea Bittau <a.bittau@cs.ucl.ac.uk> Signed-off-by: Miklos Szeredi <mszeredi@suse.cz> CC: stable@kernel.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-11-09clarify usage expectations for cnt32_to_63()Nicolas Pitre
Currently, all existing users of cnt32_to_63() are fine since the CPU architectures where it is used don't do read access reordering, and user mode preemption is disabled already. It is nevertheless a good idea to better elaborate usage requirements wrt preemption, and use an explicit memory barrier on SMP to avoid different CPUs accessing the counter value in the wrong order. On UP a simple compiler barrier is sufficient. Signed-off-by: Nicolas Pitre <nico@marvell.com> Acked-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>