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2010-12-31ISDN, Gigaset: Fix memory leak in do_disconnect_req()Jesper Juhl
Hi, In drivers/isdn/gigaset/capi.c::do_disconnect_req() we will leak the memory allocated (with kmalloc) to 'b3cmsg' if the call to alloc_skb() fails. ... b3cmsg = kmalloc(sizeof(*b3cmsg), GFP_KERNEL); allocation here ------^ if (!b3cmsg) { dev_err(cs->dev, "%s: out of memory\n", __func__); send_conf(iif, ap, skb, CAPI_MSGOSRESOURCEERR); return; } capi_cmsg_header(b3cmsg, ap->id, CAPI_DISCONNECT_B3, CAPI_IND, ap->nextMessageNumber++, cmsg->adr.adrPLCI | (1 << 16)); b3cmsg->Reason_B3 = CapiProtocolErrorLayer1; b3skb = alloc_skb(CAPI_DISCONNECT_B3_IND_BASELEN, GFP_KERNEL); if (b3skb == NULL) { dev_err(cs->dev, "%s: out of memory\n", __func__); send_conf(iif, ap, skb, CAPI_MSGOSRESOURCEERR); return; leak here ------^ ... This leak is easily fixed by just kfree()'ing the memory allocated to 'b3cmsg' right before we return. The following patch does that. Signed-off-by: Jesper Juhl <jj@chaosbits.net> Acked-by: Tilman Schmidt <tilman@imap.cc> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-12-31CAN: Use inode instead of kernel address for /proc fileDan Rosenberg
Since the socket address is just being used as a unique identifier, its inode number is an alternative that does not leak potentially sensitive information. CC-ing stable because MITRE has assigned CVE-2010-4565 to the issue. Signed-off-by: Dan Rosenberg <drosenberg@vsecurity.com> Acked-by: Oliver Hartkopp <socketcan@hartkopp.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-12-28skfp: testing the wrong variable in skfp_driver_init()Dan Carpenter
The intent here was to test if the allocation failed but we tested "SharedMemSize" instead of "SharedMemAddr" by mistake. Signed-off-by: Dan Carpenter <error27@gmail.com> Reviewed-by: Jiri Pirko <jpirko@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-12-28ppp: allow disabling multilink protocol ID compressionstephen hemminger
Linux would not connect to other router running old version Cisco IOS (12.0). This is most likely a bug in that version of IOS, since it is fixed in later versions. As a workaround this patch allows a module parameter to be set to disable compressing the protocol ID. See: https://bugzilla.vyatta.com/show_bug.cgi?id=3979 RFC 1990 allows an implementation to formulate MP fragments as if protocol compression had been negotiated. This allows us to always send compressed protocol IDs. But some implementations don't accept MP fragments with compressed protocol IDs. This parameter allows us to interoperate with them. The default value of the configurable parameter is the same as the current behavior: protocol compression is enabled. If protocol compression is disabled we will not send compressed protocol IDs. This is based on an earlier patch by Bob Gilligan (using a sysctl). Module parameter is writable to allow for enabling even if ppp is already loaded for other uses. Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Acked-by: Eric Dumazet <eric.dumazet@gmail.com> Acked-by: Paul Mackerras <paulus@samba.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-12-28ehea: Avoid changing vlan flagsBreno Leitao
This patch avoids disabling the vlan flags using ethtool. Signed-off-by: Breno Leitao <leitao@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-12-28ueagle-atm: fix PHY signal initialization raceDan Williams
A race exists when initializing ueagle-atm devices where the generic atm device may not yet be created before the driver attempts to initialize it's PHY signal state, which checks whether the atm device has been created or not. This often causes the sysfs 'carrier' attribute to be '1' even though no signal has actually been found. uea_probe usbatm_usb_probe driver->bind (uea_bind) uea_boot kthread_run(uea_kthread) uea_kthread usbatm_atm_init uea_start_reset atm_dev_register UPDATE_ATM_SIGNAL UPDATE_ATM_SIGNAL checks whether the ATM device has been created and if not, will not update the PHY signal state. Because of the race that does not always happen in time, and the PHY signal state remains ATM_PHY_SIG_FOUND even though no signal exists. To fix the race, just create the kthread during initialization, and only after initialization is complete, start the thread that reboots the device and initializes PHY state. [ 3030.490931] uea_probe: calling usbatm_usb_probe [ 3030.490946] ueagle-atm 8-2:1.0: usbatm_usb_probe: trying driver ueagle-atm with vendor=1110, product=9031, ifnum 0 [ 3030.493691] uea_bind: setting usbatm [ 3030.496932] usb 8-2: [ueagle-atm] using iso mode [ 3030.497283] ueagle-atm 8-2:1.0: usbatm_usb_probe: using 3021 byte buffer for rx channel 0xffff880125953508 <kthread already started before usbatm_usb_probe() has returned> [ 3030.497292] usb 8-2: [ueagle-atm] (re)booting started <UPDATE_ATM_SIGNAL checks whether ATM device has been created yet before setting PHY state> [ 3030.497298] uea_start_reset: atm dev (null) <and since it hasn't been created yet PHY state is not set> [ 3030.497306] ueagle-atm 8-2:1.0: usbatm_usb_probe: using 3392 byte buffer for tx channel 0xffff8801259535b8 [ 3030.497374] usbatm_usb_probe: about to init [ 3030.497379] usbatm_usb_probe: calling usbatm_atm_init <atm device finally gets created> [ 3030.497384] usbatm_atm_init: creating atm device! Signed-off-by: Dan Williams <dcbw@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-12-26Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (42 commits) ipv4: dont create routes on down devices epic100: hamachi: yellowfin: Fix skb allocation size sundance: Fix oopses with corrupted skb_shared_info Revert "ipv4: Allow configuring subnets as local addresses" USB: mcs7830: return negative if auto negotiate fails irda: prevent integer underflow in IRLMP_ENUMDEVICES tcp: fix listening_get_next() atl1c: Do not use legacy PCI power management mac80211: fix mesh forwarding MAINTAINERS: email address change net: Fix range checks in tcf_valid_offset(). net_sched: sch_sfq: fix allot handling hostap: remove netif_stop_queue from init mac80211/rt2x00: add ieee80211_tx_status_ni() typhoon: memory corruption in typhoon_get_drvinfo() net: Add USB PID for new MOSCHIP USB ethernet controller MCS7832 variant net_sched: always clone skbs ipv6: Fragment locally generated tunnel-mode IPSec6 packets as needed. netlink: fix gcc -Wconversion compilation warning asix: add USB ID for Logitec LAN-GTJ U2A ...
2010-12-25ipv4: dont create routes on down devicesEric Dumazet
In ip_route_output_slow(), instead of allowing a route to be created on a not UPed device, report -ENETUNREACH immediately. # ip tunnel add mode ipip remote 10.16.0.164 local 10.16.0.72 dev eth0 # (Note : tunl1 is down) # ping -I tunl1 10.1.2.3 PING 10.1.2.3 (10.1.2.3) from 192.168.18.5 tunl1: 56(84) bytes of data. (nothing) # ./a.out tunl1 # ip tunnel del tunl1 Message from syslogd@shelby at Dec 22 10:12:08 ... kernel: unregister_netdevice: waiting for tunl1 to become free. Usage count = 3 After patch: # ping -I tunl1 10.1.2.3 connect: Network is unreachable Reported-by: Nicolas Dichtel <nicolas.dichtel@6wind.com> Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Reviewed-by: Octavian Purdila <opurdila@ixiacom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-12-25epic100: hamachi: yellowfin: Fix skb allocation sizeJarek Poplawski
Joel Soete reported oopses during pppoe over sundance NIC, caused by a bug in skb allocation and dma mapping code, where skb_reserve() bytes weren't taken into account. As a followup to the patch: "sundance: Fix oopses with corrupted skb_shared_info" very similar code is fixed here for three other drivers. Signed-off-by: Jarek Poplawski <jarkao2@gmail.com> Cc: Joel Soete <soete.joel@scarlet.be> Cc: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-12-25sundance: Fix oopses with corrupted skb_shared_infoJarek Poplawski
Joel Soete reported oopses at the beginning of pppoe connections since v2.6.35. After debugging the bug was found in sundance skb allocation and dma mapping code, where skb_reserve() bytes aren't taken into account. This is an old bug, only uncovered by some change in 2.6.35. Initial debugging patch by: Eric Dumazet <eric.dumazet@gmail.com> Reported-by: Joel Soete <soete.joel@scarlet.be> Tested-by: Joel Soete <soete.joel@scarlet.be> Signed-off-by: Jarek Poplawski <jarkao2@gmail.com> Cc: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-12-24Merge branch 'merge' of git://git.secretlab.ca/git/linux-2.6Linus Torvalds
* 'merge' of git://git.secretlab.ca/git/linux-2.6: spi/mpc52xx-spi: fix annotation for remove()-pointer spi/fsl_espi: fix wrong setting of the address in the command buffer spi/fsl_espi: change the read behaviour of the SPIRF of/i2c: Fix request module by alias powerpc/mpc5200: include fs.h in mpc52xx_gpt.c
2010-12-24Merge branch 'upstream-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev * 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev: libata: issue DIPM enable commands with LPM state updated libata: no special completion processing for EH commands pata_mpc52xx: driver needs BMDMA pata_cs5536: Add support for non-X86_32 platforms libata-sff: fix HSM_ST_ERR handling in __ata_sff_port_intr()
2010-12-24Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu: percpu: print out alloc information with KERN_DEBUG instead of KERN_INFO kthread_work: make lockdep happy
2010-12-24Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6: [SCSI] fix up documentation for change in ->queuecommand to lockless calling [SCSI] bfa: rename log_level to bfa_log_level
2010-12-24libata: issue DIPM enable commands with LPM state updatedTejun Heo
Low level drivers may behave differently depending on the current link->lpm_policy. During ata_eh_set_lpm(), DIPM enable commands are issued after the successful completion of ap->ops->set_lpm(), which means that the controller is already in the target state. This causes DIPM enable commands to be processed with mismatching controller power state and link->lpm_policy value. In ahci, link->lpm_policy is used to ignore certain PHY events if LPM is enabled; however, as DIPM commands are issued with stale link->lpm_policy, they sometimes end up triggering these conditions and get aborted leading to LPM configuration failure. Fix it by updating link->lpm_policy before issuing DIPM enable commands. Signed-off-by: Tejun Heo <tj@kernel.org> Reported-by: Kyle McMartin <kyle@mcmartin.ca> Cc: stable@kernel.org Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2010-12-24libata: no special completion processing for EH commandsTejun Heo
ata_qc_complete() contains special handling for certain commands. For example, it schedules EH for device revalidation after certain configurations are changed. These shouldn't be applied to EH commands but they were. In most cases, it doesn't cause an actual problem because EH doesn't issue any command which would trigger special handling; however, ACPI can issue such commands via _GTF which can cause weird interactions. Restructure ata_qc_complete() such that EH commands are always passed on to __ata_qc_complete(). stable: Please apply to -stable only after 2.6.38 is released. Signed-off-by: Tejun Heo <tj@kernel.org> Reported-by: Kyle McMartin <kyle@mcmartin.ca> Cc: stable@kernel.org Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2010-12-24pata_mpc52xx: driver needs BMDMAWolfram Sang
Found by this build-error if BMDMA is disabled: drivers/ata/pata_mpc52xx.c: In function 'mpc52xx_ata_init_one': drivers/ata/pata_mpc52xx.c:662: error: 'ata_bmdma_interrupt' undeclared (first use in this function) ... Move the Kconfig entry to the proper location as needed since 9a7780c9acb821fe1c2b6fc53f74cc2556ff5364 (libata-sff: make BMDMA optional) Signed-off-by: Wolfram Sang <w.sang@pengutronix.de> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2010-12-24pata_cs5536: Add support for non-X86_32 platformsWu Zhangjin
pata_cs5536 does work on the other platforms(e.g. Loongson, a MIPS variant), so, remove the dependency of X86_32 and fix the building errors under the other platforms via only reserving the X86_32 specific parts for X86_32. pata_amd also supports cs5536 IDE controller, but this one saves about 33k for the compressed kernel image(vmlinuz for MIPS). Signed-off-by: Zhang Le <r0bertz@gentoo.org> Signed-off-by: Chen Jie <chenj@lemote.com> Signed-off-by: Wu Zhangjin <wuzhangjin@gmail.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2010-12-24libata-sff: fix HSM_ST_ERR handling in __ata_sff_port_intr()Tejun Heo
While separating out BMDMA irq handler from SFF, commit c3b28894 (libata-sff: separate out BMDMA irq handler) incorrectly made __ata_sff_port_intr() consider an IRQ to be an idle one if the host state was transitioned to HSM_ST_ERR by ata_bmdma_port_intr(). This makes BMDMA drivers ignore IRQs reporting host bus error which leads to timeouts instead of triggering EH immediately. Fix it by making __ata_sff_port_intr() consider the IRQ to be an idle one iff the state is HSM_ST_IDLE. This is equivalent to adding HSM_ST_ERR to the "break"ing case but less error-prone. Signed-off-by: Tejun Heo <tj@kernel.org> Reported-by: Antonio Toma <antonio.toma@gmail.com> Cc: stable@kernel.org Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2010-12-24spi/mpc52xx-spi: fix annotation for remove()-pointerWolfram Sang
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2010-12-24spi/fsl_espi: fix wrong setting of the address in the command bufferMingkai Hu
Or else we can't operate on the right address when the trans length is greater than 65535. Signed-off-by: Mingkai Hu <Mingkai.hu@freescale.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2010-12-24spi/fsl_espi: change the read behaviour of the SPIRFMingkai Hu
The user must read N bytes of SPIRF (1 <= N <= 4) that do not exceed the amount of data in the receive FIFO, so read the SPIRF byte by byte when the data in receive FIFO is less than 4 bytes. On Simics, when read N bytes that exceed the amount of data in receive FIFO, we can't read the data out, that is we can't clear the rx FIFO, then the CPU will loop on the espi rx interrupt. Signed-off-by: Mingkai Hu <Mingkai.hu@freescale.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2010-12-24of/i2c: Fix request module by aliasDavid Daney
If we are registering an i2c device that has a device tree node like this real-world example: rtc@68 { compatible = "dallas,ds1337"; reg = <0x68>; }; of_i2c_register_devices() will try to load a module called ds1337.ko. There is no such module, so it will fail. If we look in modules.alias we will find entries like these: . . . alias i2c:ds1339 rtc_ds1307 alias i2c:ds1338 rtc_ds1307 alias i2c:ds1337 rtc_ds1307 alias i2c:ds1307 rtc_ds1307 alias i2c:ds1374 rtc_ds1374 . . . The module we want is really called rtc_ds1307.ko. If we request a module called "i2c:ds1337", the userspace module loader will do the right thing (unless it is busybox) and load rtc_ds1307.ko. So we add the I2C_MODULE_PREFIX to the request_module() string. Signed-off-by: David Daney <ddaney@caviumnetworks.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2010-12-23Merge branch 'upstream-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jlbec/ocfs2 * 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jlbec/ocfs2: ocfs2: Fix system inodes cache overflow. ocfs2: Hold ip_lock when set/clear flags for indexed dir. ocfs2: Adjust masklog flag values Ocfs2: Teach 'coherency=full' O_DIRECT writes to correctly up_read i_alloc_sem. ocfs2/dlm: Migrate lockres with no locks if it has a reference
2010-12-23Merge branch 'linus-hot-fix' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4 * 'linus-hot-fix' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: ext4: fix on-line resizing regression
2010-12-23Merge 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 - Fix GPIO2-fixup for Sony laptops ALSA: hda - Try to find an empty control index when it's occupied ALSA: hda - Fix conflict of d-mic capture volume controls ALSA: hda - Don't apply ALC269-specific initialization to ALC275 ALSA: hda - Add fix-up for Sony VAIO with ALC275 codecs ALSA: pcm: remember to always call va_end() on stuff that we va_start() ALSA: HDA: Add auto-mute for Thinkpad SL410/SL510
2010-12-23Merge branch 'v4l_for_linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6 * 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6: (21 commits) [media] mceusb: set a default rx timeout [media] mceusb: fix inverted mask inversion logic [media] mceusb: add another Fintek device ID [media] lirc_dev: fixes in lirc_dev_fop_read() [media] lirc_dev: stray unlock in lirc_dev_fop_poll() [media] rc: fix sysfs entry for mceusb and streamzap [media] streamzap: merge timeout space with trailing space [media] mceusb: fix keybouce issue after parser simplification [media] IR: add tv power scancode to rc6 mce keymap [media] mceusb: buffer parsing fixups for 1st-gen device [media] mceusb: fix up reporting of trailing space [media] nuvoton-cir: improve buffer parsing responsiveness [media] mceusb: add support for Conexant Hybrid TV RDU253S [media] s5p-fimc: Fix output DMA handling in S5PV310 IP revisions [media] s5p-fimc: Use correct fourcc code for 32-bit RGB format [media] s5p-fimc: Convert m2m driver to unlocked_ioctl [media] s5p-fimc: Explicitly add required header file [media] s5p-fimc: Fix vidioc_g_crop/cropcap on camera sensor [media] s5p-fimc: BKL lock removal - compilation fix [media] soc-camera: fix static build of the sh_mobile_csi2.c driver ...
2010-12-23Merge branches 'perf-fixes-for-linus' and 'x86-fixes-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: perf probe: Fix to support libdwfl older than 0.148 perf tools: Fix lazy wildcard matching perf buildid-list: Fix error return for success perf buildid-cache: Fix symbolic link handling perf symbols: Stop using vmlinux files with no symbols perf probe: Fix use of kernel image path given by 'k' option * 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: x86, kexec: Limit the crashkernel address appropriately
2010-12-23KEYS: Don't call up_write() if __key_link_begin() returns an errorDavid Howells
In construct_alloc_key(), up_write() is called in the error path if __key_link_begin() fails, but this is incorrect as __key_link_begin() only returns with the nominated keyring locked if it returns successfully. Without this patch, you might see the following in dmesg: ===================================== [ BUG: bad unlock balance detected! ] ------------------------------------- mount.cifs/5769 is trying to release lock (&key->sem) at: [<ffffffff81201159>] request_key_and_link+0x263/0x3fc but there are no more locks to release! other info that might help us debug this: 3 locks held by mount.cifs/5769: #0: (&type->s_umount_key#41/1){+.+.+.}, at: [<ffffffff81131321>] sget+0x278/0x3e7 #1: (&ret_buf->session_mutex){+.+.+.}, at: [<ffffffffa0258e59>] cifs_get_smb_ses+0x35a/0x443 [cifs] #2: (root_key_user.cons_lock){+.+.+.}, at: [<ffffffff81201000>] request_key_and_link+0x10a/0x3fc stack backtrace: Pid: 5769, comm: mount.cifs Not tainted 2.6.37-rc6+ #1 Call Trace: [<ffffffff81201159>] ? request_key_and_link+0x263/0x3fc [<ffffffff81081601>] print_unlock_inbalance_bug+0xca/0xd5 [<ffffffff81083248>] lock_release_non_nested+0xc1/0x263 [<ffffffff81201159>] ? request_key_and_link+0x263/0x3fc [<ffffffff81201159>] ? request_key_and_link+0x263/0x3fc [<ffffffff81083567>] lock_release+0x17d/0x1a4 [<ffffffff81073f45>] up_write+0x23/0x3b [<ffffffff81201159>] request_key_and_link+0x263/0x3fc [<ffffffffa026fe9e>] ? cifs_get_spnego_key+0x61/0x21f [cifs] [<ffffffff812013c5>] request_key+0x41/0x74 [<ffffffffa027003d>] cifs_get_spnego_key+0x200/0x21f [cifs] [<ffffffffa026e296>] CIFS_SessSetup+0x55d/0x1273 [cifs] [<ffffffffa02589e1>] cifs_setup_session+0x90/0x1ae [cifs] [<ffffffffa0258e7e>] cifs_get_smb_ses+0x37f/0x443 [cifs] [<ffffffffa025a9e3>] cifs_mount+0x1aa1/0x23f3 [cifs] [<ffffffff8111fd94>] ? alloc_debug_processing+0xdb/0x120 [<ffffffffa027002c>] ? cifs_get_spnego_key+0x1ef/0x21f [cifs] [<ffffffffa024cc71>] cifs_do_mount+0x165/0x2b3 [cifs] [<ffffffff81130e72>] vfs_kern_mount+0xaf/0x1dc [<ffffffff81131007>] do_kern_mount+0x4d/0xef [<ffffffff811483b9>] do_mount+0x6f4/0x733 [<ffffffff8114861f>] sys_mount+0x88/0xc2 [<ffffffff8100ac42>] system_call_fastpath+0x16/0x1b Reported-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: David Howells <dhowells@redhat.com> Reviewed-and-Tested-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-12-23cs5535-gpio: handle GPIO regs where higher (clear) bits are setAndres Salomon
The default for non-READ_BACK GPIO regs is to have the clear bits set; this means that our original errata fix was too simplistic. This changes it to the following behavior: - when setting GPIOs, ignore the higher order bits (they're for clearing, we don't need to care about them). - when clearing GPIOs, keep all the bits, but unset (via XOR) the lower order bit that negates the clear bit that we care about. That is, if we're clearing GPIO 26 (val = 0x04000000), we first XOR what's currently in the register with 0x0400 (GPIO 26's SET bit), and then OR that with the GPIO 26's CLEAR bit. Tested-by: Daniel Drake <dsd@laptop.org> Signed-off-by: Andres Salomon <dilinger@queued.net> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-12-23cs5535-gpio: don't apply errata #36 to edge detect GPIOsAndres Salomon
The edge detect status GPIOs function differently from the other atomic model CS5536 GPIO registers; writing 1 to the high bits clears the GPIO, but writing 1 to the lower bits also clears the bit. This means that read-modify-write doesn't actually work for it, so don't apply the errata here. If a negative edge status gets lost after resume.. well, we tried our best! Tested-by: Daniel Drake <dsd@laptop.org> Signed-off-by: Andres Salomon <dilinger@queued.net> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-12-23Revert "ipv4: Allow configuring subnets as local addresses"David S. Miller
This reverts commit 4465b469008bc03b98a1b8df4e9ae501b6c69d4b. Conflicts: net/ipv4/fib_frontend.c As reported by Ben Greear, this causes regressions: > Change 4465b469008bc03b98a1b8df4e9ae501b6c69d4b caused rules > to stop matching the input device properly because the > FLOWI_FLAG_MATCH_ANY_IIF is always defined in ip_dev_find(). > > This breaks rules such as: > > ip rule add pref 512 lookup local > ip rule del pref 0 lookup local > ip link set eth2 up > ip -4 addr add 172.16.0.102/24 broadcast 172.16.0.255 dev eth2 > ip rule add to 172.16.0.102 iif eth2 lookup local pref 10 > ip rule add iif eth2 lookup 10001 pref 20 > ip route add 172.16.0.0/24 dev eth2 table 10001 > ip route add unreachable 0/0 table 10001 > > If you had a second interface 'eth0' that was on a different > subnet, pinging a system on that interface would fail: > > [root@ct503-60 ~]# ping 192.168.100.1 > connect: Invalid argument Reported-by: Ben Greear <greearb@candelatech.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-12-23ext4: fix on-line resizing regressionTheodore Ts'o
https://bugzilla.kernel.org/show_bug.cgi?id=25352 This regression was caused by commit a31437b85: "ext4: use sb_issue_zeroout in setup_new_group_blocks", by accidentally dropping the code which reserved the block group descriptor and inode table blocks. Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
2010-12-23powerpc/mpc5200: include fs.h in mpc52xx_gpt.cWolfram Sang
Fix build errors like these (from a randconfig and my defconfig for a custom board): src/arch/powerpc/platforms/52xx/mpc52xx_gpt.c:549: error: dereferencing pointer to incomplete type: 1 errors in 1 logs src/arch/powerpc/platforms/52xx/mpc52xx_gpt.c:636: error: implicit declaration of function 'nonseekable_open': 1 errors in 1 logs src/arch/powerpc/platforms/52xx/mpc52xx_gpt.c:657: error: variable 'mpc52xx_wdt_fops' has initializer but incomplete type: 1 errors in 1 logs src/arch/powerpc/platforms/52xx/mpc52xx_gpt.c:658: error: excess elements in struct initializer: 1 errors in 1 logs src/arch/powerpc/platforms/52xx/mpc52xx_gpt.c:658: error: unknown field 'owner' specified in initializer: 1 errors in 1 logs ... Reported-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Wolfram Sang <w.sang@pengutronix.de> Cc: Grant Likely <grant.likely@secretlab.ca> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2010-12-23USB: mcs7830: return negative if auto negotiate failsDan Carpenter
The original code returns 0 on success and 1 on failure. In fact, at this point, "ret" is already either zero or a negative error code so we can just return it directly. Signed-off-by: Dan Carpenter <error27@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-12-23irda: prevent integer underflow in IRLMP_ENUMDEVICESDan Rosenberg
If the user-provided len is less than the expected offset, the IRLMP_ENUMDEVICES getsockopt will do a copy_to_user() with a very large size value. While this isn't be a security issue on x86 because it will get caught by the access_ok() check, it may leak large amounts of kernel heap on other architectures. In any event, this patch fixes it. Signed-off-by: Dan Rosenberg <drosenberg@vsecurity.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-12-23tcp: fix listening_get_next()Eric Dumazet
Alexey Vlasov found /proc/net/tcp could sometime loop and display millions of sockets in LISTEN state. In 2.6.29, when we converted TCP hash tables to RCU, we left two sk_next() calls in listening_get_next(). We must instead use sk_nulls_next() to properly detect an end of chain. Reported-by: Alexey Vlasov <renton@renton.name> Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-12-23Merge branch 'fix/hda' into for-linusTakashi Iwai
2010-12-23ALSA: hda - Fix GPIO2-fixup for Sony laptopsTakashi Iwai
The fix-up entries by the commit 2785591a9760c677a7ee6f541e751c23086f5bfd ALSA: hda - Add fix-up for Sony VAIO with ALC275 codecs weren't applied in the right position. They had to be before the quirk entry matching to all Sony devices. Signed-off-by: Takashi Iwai <tiwai@suse.de>
2010-12-23Merge branch 'fix/misc' into for-linusTakashi Iwai
2010-12-23ALSA: hda - Try to find an empty control index when it's occupiedTakashi Iwai
When a mixer control element was already created with the given name, try to find another index for avoiding conflicts, instead of breaking with an error. This makes the driver more robust. Signed-off-by: Takashi Iwai <tiwai@suse.de>
2010-12-23ALSA: hda - Fix conflict of d-mic capture volume controlsTakashi Iwai
When the d-mics are assigned to the same purpose of another analog mic pins, the driver doesn't compute the index properly, resulting in an error with "existing control". This patch fixes it. Signed-off-by: Takashi Iwai <tiwai@suse.de>
2010-12-22Merge 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: Include the connector name in the output_poll_execute() debug message drm/radeon/kms: fix bug in r600_gpu_is_lockup drm/radeon/kms: reorder display resume to avoid problems drm/radeon/kms/evergreen: reset the grbm blocks at resume and init drm/radeon/kms: fix evergreen asic reset Revert "drm: Don't try and disable an encoder that was never enabled" drm/radeon: Add early unregister of firmware fb's drm/radeon: use aperture size not vram size for overlap tests drm/radeon/kms/evergreen: flush hdp cache when flushing gart tlb drm/radeon/kms: disable the r600 cb offset checker for linear surfaces drm/radeon/kms: disable ss fixed ref divide drm/i915/bios: Reverse order of 100/120 Mhz SSC clocks agp/intel: Fix missed cached memory flags setting in i965_write_entry() drm/i915/sdvo: Only use the SDVO pin if it is in the valid range drm/i915/ringbuffer: Handle wrapping of the autoreported HEAD drm/i915/dp: Fix I2C/EDID handling with active DisplayPort to DVI converter
2010-12-22Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/sameo/mfd-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sameo/mfd-2.6: mfd: Support additional parent IDs for wm831x mfd: Fix ab8500-core interrupt ffs bit bug mfd: Supply IRQ base for WM832x devices watchdog: Fix null pointer dereference while accessing rdc321x platform_data gpio: Fix null pointer dereference while accessing rdc321x platform_data
2010-12-22drivers/spi/spi.c: don't release the spi device twiceSebastian Andrzej Siewior
This was fixed by David Lamparter in v2.6.36-rc5 3486008 ("spi: free children in spi_unregister_master, not siblings") and broken again in v2.6.37-rc1~2^2~4 during the merge of 2b9603a0 ("spi: enable spi_board_info to be registered after spi_master"). Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: David Lamparter <equinox@diac24.net> Cc: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-12-22taskstats: pad taskstats netlink response for aligment issues on ia64Jeff Mahoney
The taskstats structure is internally aligned on 8 byte boundaries but the layout of the aggregrate reply, with two NLA headers and the pid (each 4 bytes), actually force the entire structure to be unaligned. This causes the kernel to issue unaligned access warnings on some architectures like ia64. Unfortunately, some software out there doesn't properly unroll the NLA packet and assumes that the start of the taskstats structure will always be 20 bytes from the start of the netlink payload. Aligning the start of the taskstats structure breaks this software, which we don't want. So, for now the alignment only happens on architectures that require it and those users will have to update to fixed versions of those packages. Space is reserved in the packet only when needed. This ifdef should be removed in several years e.g. 2012 once we can be confident that fixed versions are installed on most systems. We add the padding before the aggregate since the aggregate is already a defined type. Commit 85893120 ("delayacct: align to 8 byte boundary on 64-bit systems") previously addressed the alignment issues by padding out the pid field. This was supposed to be a compatible change but the circumstances described above mean that it wasn't. This patch backs out that change, since it was a hack, and introduces a new NULL attribute type to provide the padding. Padding the response with 4 bytes avoids allocating an aligned taskstats structure and copying it back. Since the structure weighs in at 328 bytes, it's too big to do it on the stack. Signed-off-by: Jeff Mahoney <jeffm@suse.com> Reported-by: Brian Rogers <brian@xyzw.org> Cc: Jeff Mahoney <jeffm@suse.com> Cc: Guillaume Chazarain <guichaz@gmail.com> Cc: Balbir Singh <balbir@in.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-12-22include/linux/unaligned: pack the whole struct rather than just the fieldWill Newton
The current packed struct implementation of unaligned access adds the packed attribute only to the field within the unaligned struct rather than to the struct as a whole. This is not sufficient to enforce proper behaviour on architectures with a default struct alignment of more than one byte. For example, the current implementation of __get_unaligned_cpu16 when compiled for arm with gcc -O1 -mstructure-size-boundary=32 assumes the struct is on a 4 byte boundary so performs the load of the 16bit packed field as if it were on a 4 byte boundary: __get_unaligned_cpu16: ldrh r0, [r0, #0] bx lr Moving the packed attribute to the struct rather than the field causes the proper unaligned access code to be generated: __get_unaligned_cpu16: ldrb r3, [r0, #0] @ zero_extendqisi2 ldrb r0, [r0, #1] @ zero_extendqisi2 orr r0, r3, r0, asl #8 bx lr Signed-off-by: Will Newton <will.newton@gmail.com> Cc: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-12-22led_class: fix typo in blink APIJohannes Berg
When I added led_blink_set I had a typo: the return value of the hw offload is a regular error code that is zero when succesful, and in that case software emulation should not be used, rather than the other way around. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Cc: Richard Purdie <rpurdie@linux.intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-12-22backlight: cr_bllcd.c: fix a memory leakAxel Lin
Signed-off-by: Axel Lin <axel.lin@gmail.com> Cc: Thomas Hellstrom <thomas@tungstengraphics.com> Cc: Alan Hourihane <alanh@tungstengraphics.com> Cc: Richard Purdie <rpurdie@rpsys.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-12-22mm/migrate.c: fix compilation errorMichal Nazarewicz
GCC complained about update_mmu_cache() not being defined in migrate.c. Including <asm/tlbflush.h> seems to solve the problem. Signed-off-by: Michal Nazarewicz <m.nazarewicz@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>