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2013-05-15fec: Fix inconsistent lock stateFabio Estevam
fec_restart() runs in softirq context and we should use the netif_tx_lock_bh/netif_tx_unlock_bh() variants to avoid the following warning that happens since commit 54309fa6 ("net: fec: fix kernel oops when plug/unplug cable many times"): [ 9.753168] ================================= [ 9.757540] [ INFO: inconsistent lock state ] [ 9.761921] 3.10.0-rc1-next-20130514 #13 Not tainted [ 9.766897] --------------------------------- [ 9.771264] inconsistent {SOFTIRQ-ON-W} -> {IN-SOFTIRQ-W} usage. [ 9.777288] swapper/0 [HC0[0]:SC1[3]:HE1:SE0] takes: [ 9.782261] (_xmit_ETHER#2){+.?...}, at: [<c03c24a4>] sch_direct_xmit+0xa0/0x2d4 [ 9.789879] {SOFTIRQ-ON-W} state was registered at: [ 9.794769] [<c0059c60>] __lock_acquire+0x528/0x1bc0 [ 9.799953] [<c005b838>] lock_acquire+0xa0/0x108 [ 9.804780] [<c0441320>] _raw_spin_lock+0x28/0x38 [ 9.809702] [<c02f9fc8>] fec_restart+0x5d0/0x664 [ 9.814542] [<c02fa738>] fec_enet_adjust_link+0xa8/0xc0 [ 9.819978] [<c02f7a28>] phy_state_machine+0x2fc/0x370 [ 9.825323] [<c0035ee0>] process_one_work+0x1c0/0x4a0 [ 9.830589] [<c0036594>] worker_thread+0x138/0x394 [ 9.835587] [<c003c620>] kthread+0xa4/0xb0 [ 9.839890] [<c000e820>] ret_from_fork+0x14/0x34 [ 9.844728] irq event stamp: 185984 [ 9.848226] hardirqs last enabled at (185984): [<c00232b0>] local_bh_enable_ip+0x84/0xf0 [ 9.856450] hardirqs last disabled at (185983): [<c0023270>] local_bh_enable_ip+0x44/0xf0 [ 9.864667] softirqs last enabled at (185966): [<c0023470>] irq_enter+0x64/0x68 [ 9.872099] softirqs last disabled at (185967): [<c0023510>] irq_exit+0x9c/0xd8 [ 9.879440] [ 9.879440] other info that might help us debug this: [ 9.885981] Possible unsafe locking scenario: [ 9.885981] [ 9.891912] CPU0 [ 9.894364] ---- [ 9.896814] lock(_xmit_ETHER#2); [ 9.900259] <Interrupt> [ 9.902884] lock(_xmit_ETHER#2); [ 9.906500] [ 9.906500] *** DEADLOCK *** Reported-by: Shawn Guo <shawn.guo@linaro.org> Suggested-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-05-15ipg: fix an unsigned widening cast of '~' truncation issueDan Carpenter
The bug here is this code from ipg_nic_hard_start_xmit(): txfd->tfc &= cpu_to_le64(~IPG_TFC_TFDDONE); IPG_TFC_TFDDONE is 0x0000000080000000 so it's an unsigned int. The negated value is 0x7fffffff but 0xffffffff7fffffff was intended. The other values in this file don't need to be changed but I did it for consistency. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-05-14net/macb: fix ISR clear-on-write behavior only for some SoCNicolas Ferre
Commit 749a2b6 (net/macb: clear tx/rx completion flags in ISR) introduces clear-on-write on ISR register. This behavior is not always implemented when using Cadence MACB/GEM and is breaking other platforms. We are using the Design Configuration Register 1 information and a capability property to actually activate this clear-on-write behavior on ISR. Reported-by: Hein Tibosch <hein_tibosch@yahoo.es> Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com> Tested-by: Hein Tibosch <hein_tibosch@yahoo.es> Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-05-14net/802/mrp: fix lockdep splatEric Dumazet
commit fb745e9a037895 ("net/802/mrp: fix possible race condition when calling mrp_pdu_queue()") introduced a lockdep splat. [ 19.735147] ================================= [ 19.735235] [ INFO: inconsistent lock state ] [ 19.735324] 3.9.2-build-0063 #4 Not tainted [ 19.735412] --------------------------------- [ 19.735500] inconsistent {IN-SOFTIRQ-W} -> {SOFTIRQ-ON-W} usage. [ 19.735592] rmmod/1840 [HC0[0]:SC0[0]:HE1:SE1] takes: [ 19.735682] (&(&app->lock)->rlock#2){+.?...}, at: [<f862bb5b>] mrp_uninit_applicant+0x69/0xba [mrp] app->lock is normally taken under softirq context, so disable BH to avoid the splat. Reported-by: Denys Fedoryshchenko <denys@visp.net.lb> Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: David Ward <david.ward@ll.mit.edu> Cc: Cong Wang <amwang@redhat.com> Tested-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-05-14mv643xx_eth: fix NAPI weight being > 64Andrew Lunn
3.10-rc1 issues the following warning: netif_napi_add() called with weight 128 on device eth%d This patch reduce the weight to 64, using NAPI_POLL_WEIGHT. Signed-off-by: Andrew Lunn <andrew@lunn.ch> Acked-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-05-14tcp: fix tcp_md5_hash_skb_data()Eric Dumazet
TCP md5 communications fail [1] for some devices, because sg/crypto code assume page offsets are below PAGE_SIZE. This was discovered using mlx4 driver [2], but I suspect loopback might trigger the same bug now we use order-3 pages in tcp_sendmsg() [1] Failure is giving following messages. huh, entered softirq 3 NET_RX ffffffff806ad230 preempt_count 00000100, exited with 00000101? [2] mlx4 driver uses order-2 pages to allocate RX frags Reported-by: Matt Schnall <mischnal@google.com> Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: Bernhard Beck <bbeck@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-05-14be2net: Avoid double insertion of vlan tags.Sarveshwar Bandi
Fix to avoid double insertion of vlan tags into the packet while handling an asic workaroud (issue introduced by net next Commit bc0c340) Signed-off-by: Sarveshwar Bandi <sarveshwar.bandi@emulex.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-05-14sfc: Reduce RX scatter buffer size, and reduce alignment if appropriateBen Hutchings
efx_start_datapath() asserts that we can fit 2 RX scatter buffers plus a software structure, each appropriately aligned, into a single page. Where L1_CACHE_BYTES == 256 and PAGE_SIZE == 4096, which is the case on s390, this assertion fails. The current scatter buffer size is also not a multiple of 64 or 128, which are more common cache line sizes. If we can make both the start and end of a scatter buffer cache-aligned, this will reduce the need for read-modify-write operations on inter- processor links. Fix the alignment by reducing EFX_RX_USR_BUF_SIZE to 2048 - 256 == 1792. (We could use 2048 - L1_CACHE_BYTES, but EFX_RX_USR_BUF_SIZE also affects user-level networking where a larger amount of housekeeping data may be needed. Although this version of the driver does not support user-level networking, I prefer to keep scattering behaviour consistent with the out-of-tree version.) This still doesn't fix the s390 build because like most architectures it has NET_IP_ALIGN == 2. When NET_IP_ALIGN != 0 we cannot achieve cache line alignment at either the start or end of a scatter buffer, so there is actually no point in padding the buffers to a multiple of the cache line size. All we need is 4-byte alignment of the network header, so do that. Adjust the assertions accordingly. Reported-by: Geert Uytterhoeven <geert@linux-m68k.org> Reported-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-05-14sfc: Delete EFX_PAGE_IP_ALIGN, equivalent to NET_IP_ALIGNBen Hutchings
The two architectures that define CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS (powerpc and x86) now both define NET_IP_ALIGN as 0, so there is no need for this optimisation any more. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-05-14tg3: Fix data corruption on 5725 with TSOMichael Chan
The 5725 family of devices (asic rev 5762), corrupts TSO packets where the buffer is within MSS bytes of a 4G boundary (4G, 8G etc.). Detect this condition and trigger the workaround path. Cc: <stable@vger.kernel.org> Signed-off-by: Michael Chan <mchan@broadcom.com> Signed-off-by: Nithin Nayak Sujir <nsujir@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-05-14tg3: Skip powering down function 0 on certain serdes devicesNithin Sujir
On the 5718, 5719 and 5720 serdes devices, powering down function 0 results in all the other ports being powered down. Add code to skip function 0 power down. v2: - Modify tg3_phy_power_bug() function to use a switch instead of a complicated if statement. Suggested by Joe Perches. Cc: <stable@vger.kernel.org> Signed-off-by: Michael Chan <mchan@broadcom.com> Signed-off-by: Nithin Nayak Sujir <nsujir@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-05-13Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netLinus Torvalds
Pull networking fixes from David Miller: "Several small bug fixes all over: 1) be2net driver uses wrong payload length when submitting MAC list get requests to the chip. From Sathya Perla. 2) Fix mwifiex memory leak on driver unload, from Amitkumar Karwar. 3) Prevent random memory access in batman-adv, from Marek Lindner. 4) batman-adv doesn't check for pskb_trim_rcsum() errors, also from Marek Lindner. 5) Fix fec crashes on rapid link up/down, from Frank Li. 6) Fix inner protocol grovelling in GSO, from Pravin B Shelar. 7) Link event validation fix in qlcnic from Rajesh Borundia. 8) Not all FEC chips can support checksum offload, fix from Shawn Guo. 9) EXPORT_SYMBOL + inline doesn't make any sense, from Denis Efremov. 10) Fix race in passthru mode during device removal in macvlan, from Jiri Pirko. 11) Fix RCU hash table lookup socket state race in ipv6, leading to NULL pointer derefs, from Eric Dumazet. 12) Add several missing HAS_DMA kconfig dependencies, from Geert Uyttterhoeven. 13) Fix bogus PCI resource management in 3c59x driver, from Sergei Shtylyov. 14) Fix info leak in ipv6 GRE tunnel driver, from Amerigo Wang. 15) Fix device leak in ipv6 IPSEC policy layer, from Cong Wang. 16) DMA mapping leak fix in qlge from Thadeu Lima de Souza Cascardo. 17) Missing iounmap on probe failure in bna driver, from Wei Yongjun." * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (40 commits) bna: add missing iounmap() on error in bnad_init() qlge: fix dma map leak when the last chunk is not allocated xfrm6: release dev before returning error ipv6,gre: do not leak info to user-space virtio_net: use default napi weight by default emac: Fix EMAC soft reset on 460EX/GT 3c59x: fix PCI resource management caif: CAIF_VIRTIO should depend on HAS_DMA net/ethernet: MACB should depend on HAS_DMA net/ethernet: ARM_AT91_ETHER should depend on HAS_DMA net/wireless: ATH9K should depend on HAS_DMA net/ethernet: STMMAC_ETH should depend on HAS_DMA net/ethernet: NET_CALXEDA_XGMAC should depend on HAS_DMA ipv6: do not clear pinet6 field macvlan: fix passthru mode race between dev removal and rx path ipv4: ip_output: remove inline marking of EXPORT_SYMBOL functions net/mlx4: Strengthen VLAN tags/priorities enforcement in VST mode net/mlx4_core: Add missing report on VST and spoof-checking dev caps net: fec: enable hardware checksum only on imx6q-fec qlcnic: Fix validation of link event command. ...
2013-05-13bna: add missing iounmap() on error in bnad_init()Wei Yongjun
Add the missing iounmap() before return from bnad_init() in the error handling case. Introduced by commit 01b54b1451853593739816a392485c4e2bee7dda (bna: tx rx cleanup fix). Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-05-13qlge: fix dma map leak when the last chunk is not allocatedThadeu Lima de Souza Cascardo
qlge allocates chunks from a page that it maps and unmaps that page when the last chunk is released. When the driver is unloaded or the card is removed, all chunks are released and the page is unmapped for the last chunk. However, when the last chunk of a page is not allocated and the device is removed, that page is not unmapped. In fact, its last reference is not put and there's also a page leak. This bug prevents a device from being properly hotplugged. When the DMA API debug option is enabled, the following messages show the pending DMA allocation after we remove the driver. This patch fixes the bug by unmapping and putting the page from the ring if its last chunk has not been allocated. pci 0005:98:00.0: DMA-API: device driver has pending DMA allocations while released from device [count=1] One of leaked entries details: [device address=0x0000000060a80000] [size=65536 bytes] [mapped with DMA_FROM_DEVICE] [mapped as page] ------------[ cut here ]------------ WARNING: at lib/dma-debug.c:746 Modules linked in: qlge(-) rpadlpar_io rpaphp pci_hotplug fuse [last unloaded: qlge] NIP: c0000000003fc3ec LR: c0000000003fc3e8 CTR: c00000000054de60 REGS: c0000003ee9c74e0 TRAP: 0700 Tainted: G O (3.7.2) MSR: 8000000000029032 <SF,EE,ME,IR,DR,RI> CR: 28002424 XER: 00000001 SOFTE: 1 CFAR: c0000000007a39c8 TASK = c0000003ee8d5c90[8406] 'rmmod' THREAD: c0000003ee9c4000 CPU: 31 GPR00: c0000000003fc3e8 c0000003ee9c7760 c000000000c789f8 00000000000000ee GPR04: 0000000000000000 00000000000000ef 0000000000004000 0000000000010000 GPR08: 00000000000000be c000000000b22088 c000000000c4c218 00000000007c0000 GPR12: 0000000028002422 c00000000ff26c80 0000000000000000 000001001b0f1b40 GPR16: 00000000100cb9d8 0000000010093088 c000000000cdf910 0000000000000001 GPR20: 0000000000000000 c000000000dbfc00 0000000000000000 c000000000dbfb80 GPR24: c0000003fafc9d80 0000000000000001 000000000001ff80 c0000003f38f7888 GPR28: c000000000ddfc00 0000000000000400 c000000000bd7790 c000000000ddfb80 NIP [c0000000003fc3ec] .dma_debug_device_change+0x22c/0x2b0 LR [c0000000003fc3e8] .dma_debug_device_change+0x228/0x2b0 Call Trace: [c0000003ee9c7760] [c0000000003fc3e8] .dma_debug_device_change+0x228/0x2b0 (unreliable) [c0000003ee9c7840] [c00000000079a098] .notifier_call_chain+0x78/0xf0 [c0000003ee9c78e0] [c0000000000acc20] .__blocking_notifier_call_chain+0x70/0xb0 [c0000003ee9c7990] [c0000000004a9580] .__device_release_driver+0x100/0x140 [c0000003ee9c7a20] [c0000000004a9708] .driver_detach+0x148/0x150 [c0000003ee9c7ac0] [c0000000004a8144] .bus_remove_driver+0xc4/0x150 [c0000003ee9c7b60] [c0000000004aa58c] .driver_unregister+0x8c/0xe0 [c0000003ee9c7bf0] [c0000000004090b4] .pci_unregister_driver+0x34/0xf0 [c0000003ee9c7ca0] [d000000002231194] .qlge_exit+0x1c/0x34 [qlge] [c0000003ee9c7d20] [c0000000000e36d8] .SyS_delete_module+0x1e8/0x290 [c0000003ee9c7e30] [c0000000000098d4] syscall_exit+0x0/0x94 Instruction dump: 7f26cb78 e818003a e87e81a0 e8f80028 e9180030 796b1f24 78001f24 7d6a5a14 7d2a002a e94b0020 483a7595 60000000 <0fe00000> 2fb80000 40de0048 80120050 ---[ end trace 4294f9abdb01031d ]--- Mapped at: [<d000000002222f54>] .ql_update_lbq+0x384/0x580 [qlge] [<d000000002227bd0>] .ql_clean_inbound_rx_ring+0x300/0xc60 [qlge] [<d0000000022288cc>] .ql_napi_poll_msix+0x39c/0x5a0 [qlge] [<c0000000006b3c50>] .net_rx_action+0x170/0x300 [<c000000000081840>] .__do_softirq+0x170/0x300 Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@linux.vnet.ibm.com> Acked-by: Jitendra Kalsaria <Jitendra.kalsaria@qlogic.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-05-13Merge tag 'spi-v3.10-rc1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi Pull spi updates from Mark Brown: "A few driver specific fixes plus improved error handling in the generic DT GPIO chipselect handling - not exciting but useful." * tag 'spi-v3.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi: spi/spi-atmel: BUG: fix doesn' support 16 bits transfers using PIO spi/davinci: fix module build error spi: Return error from of_spi_register_master on bad "cs-gpios" property spi: Initialize cs_gpio and cs_gpios with -ENOENT spi/atmel: fix speed_hz check in atmel_spi_transfer()
2013-05-13Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linuxLinus Torvalds
Pull drm fixes from Dave Airlie: "Just a few straggling fixes I hoovered up, and an intel fixes pull from Daniel which fixes some regressions, and some mgag200 fixes from Matrox." * 'drm-next' of git://people.freedesktop.org/~airlied/linux: drm/mgag200: Fix framebuffer base address programming drm/mgag200: Convert counter delays to jiffies drm/mgag200: Fix writes into MGA1064_PIX_CLK_CTL register drm/mgag200: Don't change unrelated registers during modeset drm: Only print a debug message when the polled connector has changed drm: Make the HPD status updates debug logs more readable drm: Use names of ioctls in debug traces drm: Remove pointless '-' characters from drm_fb_helper documentation drm: Add kernel-doc for drm_fb_helper_funcs->initial_config drm: refactor call to request_module drm: Don't prune modes loudly when a connector is disconnected drm: Add missing break in the command line mode parsing code drm/i915: clear the stolen fb before resuming Revert "drm/i915: Calculate correct stolen size for GEN7+" drm/i915: hsw: fix link training for eDP on port-A Revert "drm/i915: revert eDP bpp clamping code changes" drm: don't check modeset locks in panic handler drm/i915: Fix pipe enabled mask for pipe C in WM calculations drm/mm: fix dump table BUG drm/i915: Always normalize return timeout for wait_timeout_ioctl
2013-05-13Merge tag 'fixes-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux Pull virtio/lguest fixes from Rusty Russell: "Missing license tag and some fallout from the lguest pagetable rework" * tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux: lguest: clear cached last cpu when guest_set_pgd() called. Add missing module license tag to vring helpers.
2013-05-13Merge remote-tracking branch 'spi/fix/grant' into spi-linusMark Brown
2013-05-13Merge remote-tracking branch 'spi/fix/atmel' into spi-linusMark Brown
2013-05-13drm/mgag200: Fix framebuffer base address programmingChristopher Harvey
Higher bits of the base address of framebuffers weren't being programmed properly. This caused framebuffers that didn't happen to be allocated at a low enough address to not be displayed properly. Signed-off-by: Christopher Harvey <charvey@matrox.com> Signed-off-by: Mathieu Larouche <mathieu.larouche@matrox.com> Acked-by: Julia Lemire <jlemire@matrox.com> Tested-by: Julia Lemire <jlemire@matrox.com> Cc: stable@vger.kernel.org Signed-off-by: Dave Airlie <airlied@redhat.com>
2013-05-13drm/mgag200: Convert counter delays to jiffiesChristopher Harvey
Signed-off-by: Christopher Harvey <charvey@matrox.com> Acked-by: Julia Lemire <jlemire@matrox.com> Tested-by: Julia Lemire <jlemire@matrox.com> Acked-by: Mathieu Larouche <mathieu.larouche@matrox.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2013-05-13drm/mgag200: Fix writes into MGA1064_PIX_CLK_CTL registerChristopher Harvey
The original line, WREG_DAC(MGA1064_PIX_CLK_CTL_CLK_DIS, tmp); wrote tmp into MGA1064_PIX_CLK_CTL_CLK_DIS, where MGA1064_PIX_CLK_CTL_CLK_DIS is an offset into MGA1064_PIX_CLK_CTL. Change the line to write properly into MGA1064_PIX_CLK_CTL. There were other chunks of code nearby that use the same pattern (but work correctly), so this patch updates them all to use this new (slightly more efficient) write pattern. The WREG_DAC macro was causing the DAC_INDEX register to be set to the same value twice. WREG8(DAC_DATA, foo) takes advantage of the fact that DAC_INDEX is already at the value we want. Signed-off-by: Christopher Harvey <charvey@matrox.com> Acked-by: Julia Lemire <jlemire@matrox.com> Tested-by: Julia Lemire <jlemire@matrox.com> Acked-by: Mathieu Larouche <mathieu.larouche@matrox.com> Cc: stable@vger.kernel.org Signed-off-by: Dave Airlie <airlied@redhat.com>
2013-05-13drm/mgag200: Don't change unrelated registers during modesetChristopher Harvey
Registers in indices below 0x18 are totally unrelated to modesetting, so don't write 0's, or anything else into them on modeset. Most of these registers are hardware cursor related, so this existing code interferes with hardware cursor development. Signed-off-by: Christopher Harvey <charvey@matrox.com> Tested-by: Julia Lemire <jlemire@matrox.com> Acked-by: Julia Lemire <jlemire@matrox.com> Acked-by: Mathieu Larouche <mathieu.larouche@matrox.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2013-05-13drm: Only print a debug message when the polled connector has changedLespiau, Damien
Suggested-by: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Damien Lespiau <damien.lespiau@intel.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2013-05-13drm: Make the HPD status updates debug logs more readableLespiau, Damien
Instead of just printing "status updated from 1 to 2", make those enum numbers immediately readable. v2: Also patch output_poll_execute() (Daniel Vetter) v3: Use drm_get_connector_status_name (Ville Syrjälä) Signed-off-by: Damien Lespiau <damien.lespiau@intel.com> Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org> (for v1) Signed-off-by: Dave Airlie <airlied@redhat.com>
2013-05-11xfrm6: release dev before returning errorCong Wang
We forget to call dev_put() on error path in xfrm6_fill_dst(), its caller doesn't handle this. Cc: Herbert Xu <herbert@gondor.apana.org.au> Cc: Steffen Klassert <steffen.klassert@secunet.com> Cc: David S. Miller <davem@davemloft.net> Signed-off-by: Cong Wang <amwang@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-05-11ipv6,gre: do not leak info to user-spaceAmerigo Wang
There is a hole in struct ip6_tnl_parm2, so we have to zero the struct on stack before copying it to user-space. Cc: David S. Miller <davem@davemloft.net> Signed-off-by: Cong Wang <amwang@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-05-11virtio_net: use default napi weight by defaultAmerigo Wang
Since commit 82dc3c63c692b1e1d5937 ("net: introduce NAPI_POLL_WEIGHT") we warn drivers when they use napi weight higher than NAPI_POLL_WEIGHT, but virtio_net still uses 128 by default. This patch makes its default value to NAPI_POLL_WEIGHT. Cc: "Michael S. Tsirkin" <mst@redhat.com> Cc: Eric Dumazet <eric.dumazet@gmail.com> Cc: David S. Miller <davem@davemloft.net> Signed-off-by: Cong Wang <amwang@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-05-11emac: Fix EMAC soft reset on 460EX/GTPetri Gynther
Fix EMAC soft reset on 460EX/GT to select the right PHY clock source before and after the soft reset. EMAC with PHY should use the clock from PHY during soft reset. EMAC without PHY should use the internal clock during soft reset. PPC460EX/GT Embedded Processor Advanced User's Manual section 28.10.1 Mode Register 0 (EMACx_MR0) states: Note: The PHY must provide a TX Clk in order to perform a soft reset of the EMAC. If none is present, select the internal clock (SDR0_ETH_CFG[EMACx_PHY_CLK] = 1). After a soft reset, select the external clock. Without the fix, 460EX/GT-based boards with RGMII PHYs attached to EMACs experience EMAC interrupt storm and system watchdog reset when issuing "ifconfig eth0 down" + "ifconfig eth0 up" a few times. The system enters endless loop of serving emac_irq() with EMACx_ISR register stuck at value 0x10000000 (Rx parity error). With the fix, the above issue is no longer observed. Signed-off-by: Petri Gynther <pgynther@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-05-113c59x: fix PCI resource managementSergei Shtylyov
The driver wrongly claimed I/O ports at an address returned by pci_iomap() -- even if it was passed an MMIO address. Fix this by claiming/releasing all PCI resources in the PCI driver's probe()/remove() methods instead and get rid of 'must_free_region' flag weirdness (why would Cardbus claim anything for us?). Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-05-11Linux 3.10-rc1Linus Torvalds
2013-05-11Merge tag 'trace-fixes-v3.10' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace Pull tracing/kprobes update from Steven Rostedt: "The majority of these changes are from Masami Hiramatsu bringing kprobes up to par with the latest changes to ftrace (multi buffering and the new function probes). He also discovered and fixed some bugs in doing so. When pulling in his patches, I also found a few minor bugs as well and fixed them. This also includes a compile fix for some archs that select the ring buffer but not tracing. I based this off of the last patch you took from me that fixed the merge conflict error, as that was the commit that had all the changes I needed for this set of changes." * tag 'trace-fixes-v3.10' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: tracing/kprobes: Support soft-mode disabling tracing/kprobes: Support ftrace_event_file base multibuffer tracing/kprobes: Pass trace_probe directly from dispatcher tracing/kprobes: Increment probe hit-count even if it is used by perf tracing/kprobes: Use bool for retprobe checker ftrace: Fix function probe when more than one probe is added ftrace: Fix the output of enabled_functions debug file ftrace: Fix locking in register_ftrace_function_probe() tracing: Add helper function trace_create_new_event() to remove duplicate code tracing: Modify soft-mode only if there's no other referrer tracing: Indicate enabled soft-mode in enable file tracing/kprobes: Fix to increment return event probe hit-count ftrace: Cleanup regex_lock and ftrace_lock around hash updating ftrace, kprobes: Fix a deadlock on ftrace_regex_lock ftrace: Have ftrace_regex_write() return either read or error tracing: Return error if register_ftrace_function_probe() fails for event_enable_func() tracing: Don't succeed if event_enable_func did not register anything ring-buffer: Select IRQ_WORK
2013-05-11caif: CAIF_VIRTIO should depend on HAS_DMAGeert Uytterhoeven
If NO_DMA=y: drivers/built-in.o: In function `cfv_destroy_genpool': drivers/net/caif/caif_virtio.c:364: undefined reference to `dma_free_coherent' drivers/built-in.o: In function `cfv_create_genpool': drivers/net/caif/caif_virtio.c:397: undefined reference to `dma_alloc_coherent' Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Dmitry Tarnyagin <dmitry.tarnyagin@lockless.no> Cc: David S. Miller <davem@davemloft.net> Cc: netdev@vger.kernel.org Signed-off-by: David S. Miller <davem@davemloft.net>
2013-05-11net/ethernet: MACB should depend on HAS_DMAGeert Uytterhoeven
If NO_DMA=y: drivers/built-in.o: In function `macb_free_consistent': drivers/net/ethernet/cadence/macb.c:878: undefined reference to `dma_free_coherent' drivers/net/ethernet/cadence/macb.c:883: undefined reference to `dma_free_coherent' drivers/net/ethernet/cadence/macb.c:888: undefined reference to `dma_free_coherent' drivers/built-in.o: In function `macb_alloc_consistent': drivers/net/ethernet/cadence/macb.c:905: undefined reference to `dma_alloc_coherent' drivers/built-in.o: In function `macb_tx_interrupt': drivers/net/ethernet/cadence/macb.c:515: undefined reference to `dma_unmap_single' drivers/built-in.o: In function `macb_tx_error_task': drivers/net/ethernet/cadence/macb.c:457: undefined reference to `dma_unmap_single' drivers/built-in.o: In function `macb_start_xmit': drivers/net/ethernet/cadence/macb.c:838: undefined reference to `dma_map_single' Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Nicolas Ferre <nicolas.ferre@atmel.com> Cc: David S. Miller <davem@davemloft.net> Cc: netdev@vger.kernel.org Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-05-11net/ethernet: ARM_AT91_ETHER should depend on HAS_DMAGeert Uytterhoeven
If NO_DMA=y: drivers/built-in.o: In function `at91ether_start': drivers/net/ethernet/cadence/at91_ether.c:49: undefined reference to `dma_alloc_coherent' drivers/net/ethernet/cadence/at91_ether.c:60: undefined reference to `dma_free_coherent' drivers/built-in.o: In function `at91ether_interrupt': drivers/net/ethernet/cadence/at91_ether.c:250: undefined reference to `dma_unmap_single' drivers/built-in.o: In function `at91ether_start_xmit': drivers/net/ethernet/cadence/at91_ether.c:169: undefined reference to `dma_map_single' drivers/built-in.o: In function `at91ether_close': drivers/net/ethernet/cadence/at91_ether.c:145: undefined reference to `dma_free_coherent' Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Nicolas Ferre <nicolas.ferre@atmel.com> Cc: David S. Miller <davem@davemloft.net> Cc: netdev@vger.kernel.org Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-05-11net/wireless: ATH9K should depend on HAS_DMAGeert Uytterhoeven
If NO_DMA=y: drivers/built-in.o: In function `ath9k_beacon_generate': drivers/net/wireless/ath/ath9k/beacon.c:146: undefined reference to `dma_unmap_single' drivers/net/wireless/ath/ath9k/beacon.c:174: undefined reference to `dma_map_single' drivers/net/wireless/ath/ath9k/beacon.c:176: undefined reference to `dma_mapping_error' drivers/built-in.o: In function `ath9k_beacon_remove_slot': drivers/net/wireless/ath/ath9k/beacon.c:252: undefined reference to `dma_unmap_single' drivers/built-in.o: In function `ath_descdma_setup': drivers/net/wireless/ath/ath9k/init.c:382: undefined reference to `dmam_alloc_coherent' drivers/built-in.o: In function `ath_edma_get_buffers': drivers/net/wireless/ath/ath9k/recv.c:616: undefined reference to `dma_sync_single_for_cpu' drivers/built-in.o: In function `ath_get_next_rx_buf': drivers/net/wireless/ath/ath9k/recv.c:740: undefined reference to `dma_sync_single_for_cpu' drivers/built-in.o: In function `ath_rx_edma_cleanup': drivers/net/wireless/ath/ath9k/recv.c:176: undefined reference to `dma_unmap_single' drivers/built-in.o: In function `ath_rx_cleanup': drivers/net/wireless/ath/ath9k/recv.c:340: undefined reference to `dma_unmap_single' drivers/built-in.o: In function `ath_rx_edma_buf_link': drivers/net/wireless/ath/ath9k/recv.c:122: undefined reference to `dma_sync_single_for_cpu' drivers/built-in.o: In function `ath_rx_tasklet': drivers/net/wireless/ath/ath9k/recv.c:1275: undefined reference to `dma_map_single' drivers/net/wireless/ath/ath9k/recv.c:1277: undefined reference to `dma_mapping_error' drivers/net/wireless/ath/ath9k/recv.c:1283: undefined reference to `dma_unmap_single' drivers/built-in.o: In function `ath_rx_edma_init': drivers/net/wireless/ath/ath9k/recv.c:226: undefined reference to `dma_map_single' drivers/net/wireless/ath/ath9k/recv.c:229: undefined reference to `dma_mapping_error' drivers/built-in.o: In function `ath_rx_init': drivers/net/wireless/ath/ath9k/recv.c:303: undefined reference to `dma_map_single' drivers/net/wireless/ath/ath9k/recv.c:306: undefined reference to `dma_mapping_error' drivers/built-in.o: In function `ath_tx_complete_buf': drivers/net/wireless/ath/ath9k/xmit.c:2088: undefined reference to `dma_unmap_single' drivers/built-in.o: In function `ath_txstatus_setup': drivers/net/wireless/ath/ath9k/xmit.c:2344: undefined reference to `dmam_alloc_coherent' drivers/built-in.o: In function `ath_tx_set_retry': drivers/net/wireless/ath/ath9k/xmit.c:307: undefined reference to `dma_sync_single_for_cpu' drivers/built-in.o: In function `ath_tx_setup_buffer': drivers/net/wireless/ath/ath9k/xmit.c:1887: undefined reference to `dma_map_single' drivers/net/wireless/ath/ath9k/xmit.c:1889: undefined reference to `dma_mapping_error' Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Luis R. Rodriguez <mcgrof@qca.qualcomm.com> Cc: John W. Linville <linville@tuxdriver.com> Cc: linux-wireless@vger.kernel.org Cc: netdev@vger.kernel.org Signed-off-by: David S. Miller <davem@davemloft.net>
2013-05-11net/ethernet: STMMAC_ETH should depend on HAS_DMAGeert Uytterhoeven
If NO_DMA=y: drivers/built-in.o: In function `dma_free_tx_skbufs': drivers/net/ethernet/stmicro/stmmac/stmmac_main.c:1141: undefined reference to `dma_unmap_single' drivers/built-in.o: In function `dma_free_rx_skbufs': drivers/net/ethernet/stmicro/stmmac/stmmac_main.c:1120: undefined reference to `dma_unmap_single' drivers/built-in.o: In function `free_dma_desc_resources': drivers/net/ethernet/stmicro/stmmac/stmmac_main.c:1159: undefined reference to `dma_free_coherent' drivers/built-in.o: In function `stmmac_init_rx_buffers': drivers/net/ethernet/stmicro/stmmac/stmmac_main.c:980: undefined reference to `dma_map_single' drivers/built-in.o: In function `init_dma_desc_rings': drivers/net/ethernet/stmicro/stmmac/stmmac_main.c:1015: undefined reference to `dma_alloc_coherent' drivers/built-in.o: In function `stmmac_tx_clean': drivers/net/ethernet/stmicro/stmmac/stmmac_main.c:1250: undefined reference to `dma_unmap_single' drivers/built-in.o: In function `stmmac_rx': drivers/net/ethernet/stmicro/stmmac/stmmac_main.c:2044: undefined reference to `dma_unmap_single' drivers/net/ethernet/stmicro/stmmac/stmmac_main.c:2082: undefined reference to `dma_unmap_single' drivers/built-in.o: In function `stmmac_rx_refill': drivers/net/ethernet/stmicro/stmmac/stmmac_main.c:1967: undefined reference to `dma_map_single' drivers/built-in.o: In function `stmmac_xmit': drivers/net/ethernet/stmicro/stmmac/stmmac_main.c:1845: undefined reference to `dma_map_single' drivers/built-in.o: In function `skb_frag_dma_map': include/linux/skbuff.h:2184: undefined reference to `dma_map_page' drivers/built-in.o: In function `stmmac_jumbo_frm': drivers/net/ethernet/stmicro/stmmac/ring_mode.c:40: undefined reference to `dma_map_single' drivers/built-in.o: In function `stmmac_jumbo_frm': drivers/net/ethernet/stmicro/stmmac/chain_mode.c:48: undefined reference to `dma_map_single' drivers/net/ethernet/stmicro/stmmac/chain_mode.c:55: undefined reference to `dma_map_single' Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Giuseppe Cavallaro <peppe.cavallaro@st.com> Cc: David S. Miller <davem@davemloft.net> Cc: netdev@vger.kernel.org Signed-off-by: David S. Miller <davem@davemloft.net>
2013-05-11net/ethernet: NET_CALXEDA_XGMAC should depend on HAS_DMAGeert Uytterhoeven
If NO_DMA=y: drivers/built-in.o: In function `xgmac_xmit': drivers/net/ethernet/calxeda/xgmac.c:1102: undefined reference to `dma_mapping_error' Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Rob Herring <rob.herring@calxeda.com> Cc: David S. Miller <davem@davemloft.net> Cc: netdev@vger.kernel.org Signed-off-by: David S. Miller <davem@davemloft.net>
2013-05-11ipv6: do not clear pinet6 fieldEric Dumazet
We have seen multiple NULL dereferences in __inet6_lookup_established() After analysis, I found that inet6_sk() could be NULL while the check for sk_family == AF_INET6 was true. Bug was added in linux-2.6.29 when RCU lookups were introduced in UDP and TCP stacks. Once an IPv6 socket, using SLAB_DESTROY_BY_RCU is inserted in a hash table, we no longer can clear pinet6 field. This patch extends logic used in commit fcbdf09d9652c891 ("net: fix nulls list corruptions in sk_prot_alloc") TCP/UDP/UDPLite IPv6 protocols provide their own .clear_sk() method to make sure we do not clear pinet6 field. At socket clone phase, we do not really care, as cloning the parent (non NULL) pinet6 is not adding a fatal race. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-05-11macvlan: fix passthru mode race between dev removal and rx pathJiri Pirko
Currently, if macvlan in passthru mode is created and data are rxed and you remove this device, following panic happens: NULL pointer dereference at 0000000000000198 IP: [<ffffffffa0196058>] macvlan_handle_frame+0x153/0x1f7 [macvlan] I'm using following script to trigger this: <script> while [ 1 ] do ip link add link e1 name macvtap0 type macvtap mode passthru ip link set e1 up ip link set macvtap0 up IFINDEX=`ip link |grep macvtap0 | cut -f 1 -d ':'` cat /dev/tap$IFINDEX >/dev/null & ip link del dev macvtap0 done </script> I run this script while "ping -f" is running on another machine to send packets to e1 rx. Reason of the panic is that list_first_entry() is blindly called in macvlan_handle_frame() even if the list was empty. vlan is set to incorrect pointer which leads to the crash. I'm fixing this by protecting port->vlans list by rcu and by preventing from getting incorrect pointer in case the list is empty. Introduced by: commit eb06acdc85585f2 "macvlan: Introduce 'passthru' mode to takeover the underlying device" Signed-off-by: Jiri Pirko <jiri@resnulli.us> Acked-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-05-11Merge tag 'batman-adv-fix-for-davem' of git://git.open-mesh.org/linux-mergeDavid S. Miller
Included changes: - fix parsing of user typed protocol string to avoid random memory access in some cases - check pskb_trim_rcsum() return value - prevent DAT from sending ARP replies when not needed - reorder the main clean up routine to prevent race conditions Signed-off-by: David S. Miller <davem@davemloft.net>
2013-05-11Merge tag 'stable/for-linus-3.10-rc0-tag-two' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen Pull Xen bug-fixes from Konrad Rzeszutek Wilk: - More fixes in the vCPU PVHVM hotplug path. - Add more documentation. - Fix various ARM related issues in the Xen generic drivers. - Updates in the xen-pciback driver per Bjorn's updates. - Mask the x2APIC feature for PV guests. * tag 'stable/for-linus-3.10-rc0-tag-two' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen: xen/pci: Used cached MSI-X capability offset xen/pci: Use PCI_MSIX_TABLE_BIR, not PCI_MSIX_FLAGS_BIRMASK xen: clear IRQ_NOAUTOEN and IRQ_NOREQUEST xen: mask x2APIC feature in PV xen: SWIOTLB is only used on x86 xen/spinlock: Fix check from greater than to be also be greater or equal to. xen/smp/pvhvm: Don't point per_cpu(xen_vpcu, 33 and larger) to shared_info xen/vcpu: Document the xen_vcpu_info and xen_vcpu xen/vcpu/pvhvm: Fix vcpu hotplugging hanging.
2013-05-11ipv4: ip_output: remove inline marking of EXPORT_SYMBOL functionsDenis Efremov
EXPORT_SYMBOL and inline directives are contradictory to each other. The patch fixes this inconsistency. Found by Linux Driver Verification project (linuxtesting.org). Signed-off-by: Denis Efremov <yefremov.denis@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-05-11net/mlx4: Strengthen VLAN tags/priorities enforcement in VST modeRony Efraim
Make sure that the following steps are taken: - drop packets sent by the VF with vlan tag - block packets with vlan tag which are steered to the VF - drop/block tagged packets when the policy is priority-tagged - make sure VLAN stripping for received packets is set - make sure force UP bit for the VF QP is set Use enum values for all the above instead of numerical bit offsets. Signed-off-by: Rony Efraim <ronye@mellanox.com> Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-05-11net/mlx4_core: Add missing report on VST and spoof-checking dev capsOr Gerlitz
Commits e6b6a23 "net/mlx4: Add VF MAC spoof checking support" and 3f7fb021 "net/mlx4: Add set VF default vlan ID and priority support" missed reporting in the device capabilities dump when these features are actually supported. Also two too noisy debug messages which produce message on every QP opened by a VF, were left in the code, fix that. Signed-off-by: Rony Efraim <ronye@mellanox.com> Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-05-11net: fec: enable hardware checksum only on imx6q-fecShawn Guo
Commit 4c09eed (net: fec: Enable imx6 enet checksum acceleration.) enables hardware checksum acceleration unconditionally for all fec variants. This is inappropriate, because some variants like imx5 have no such support on hardware. Consequently, fec is broken on these platforms. Fix it by enabling hardware checksum only on imx6q-fec type of controllers. Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Reviewed-by: Jim Baxter <jim_baxter@mentor.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-05-11Merge branch 'qlcnic'David S. Miller
Shahed Shaikh says: ==================== This patch series has following bug fixes: * Fix a bug in unicast MAC address setting in adapter. Driver was not deleting older unicast MAC while adding new one. * Fix an ethtool stats string array by adding missing string entry and fix a typo. * Fix module paramter description. Bracket ')' was missing. * Fix port status provided though 'ethtool <device>' for 83xx adapter. * Fix reset recovery path in case of transmit timeout. * Fix reset recovery during diagnostic tests by preserving current device status information. * Fix mailbox response handling. Driver was not maintaining poll time properly. * Fix validation of link event command. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2013-05-11qlcnic: Fix validation of link event command.Rajesh Borundia
o VF driver that has enabled asynchronous link events may not set BIT_8 in the request, if it does not require link state in the response. Signed-off-by: Pratik Pujar <pratik.pujar@qlogic.com> Signed-off-by: Rajesh Borundia <rajesh.borundia@qlogic.com> Signed-off-by: Shahed Shaikh <shahed.shaikh@qlogic.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-05-11qlcnic: Fix mailbox response handling.Rajesh Borundia
o Fix mailbox response poll time to maximum 5 seconds which includes mailbox response time as well as time required for processing AEN if any. o Driver need to read firmware control mailbox register instead of host control mailbox register. Signed-off-by: Jitendra Kalsaria <jitendra.kalsaria@qlogic.com> Signed-off-by: Rajesh Borundia <rajesh.borundia@qlogic.com> Signed-off-by: Shahed Shaikh <shahed.shaikh@qlogic.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-05-11qlcnic: Fix bug in diagnostics test reset recovery pathManish Chopra
o In order to perform reset recovery during diagnostics tests, current device status information need to be preserved. This patch makes the required changes in diagnostics routines Signed-off-by: Manish Chopra <manish.chopra@qlogic.com> Signed-off-by: Shahed Shaikh <shahed.shaikh@qlogic.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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