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2015-11-17arm64: simplify dma_get_opsArnd Bergmann2-22/+7
Including linux/acpi.h from asm/dma-mapping.h causes tons of compile-time warnings, e.g. drivers/isdn/mISDN/dsp_ecdis.h:43:0: warning: "FALSE" redefined drivers/isdn/mISDN/dsp_ecdis.h:44:0: warning: "TRUE" redefined drivers/net/fddi/skfp/h/targetos.h:62:0: warning: "TRUE" redefined drivers/net/fddi/skfp/h/targetos.h:63:0: warning: "FALSE" redefined However, it looks like the dependency should not even there as I do not see why __generic_dma_ops() cares about whether we have an ACPI based system or not. The current behavior is to fall back to the global dma_ops when a device has not set its own dma_ops, but only for DT based systems. This seems dangerous, as a random device might have different requirements regarding IOMMU or coherency, so we should really never have that fallback and just forbid DMA when we have not initialized DMA for a device. This removes the global dma_ops variable and the special-casing for ACPI, and just returns the dma ops that got set for the device, or the dummy_dma_ops if none were present. The original code has apparently been copied from arm32 where we rely on it for ISA devices things like the floppy controller, but we should have no such devices on ARM64. Signed-off-by: Arnd Bergmann <[email protected]> [[email protected]: removed acpi_disabled check in arch_setup_dma_ops()] Signed-off-by: Catalin Marinas <[email protected]>
2015-11-17arm64: mm: use correct mapping granularity under DEBUG_RODATAArd Biesheuvel1-6/+6
When booting a 64k pages kernel that is built with CONFIG_DEBUG_RODATA and resides at an offset that is not a multiple of 512 MB, the rounding that occurs in __map_memblock() and fixup_executable() results in incorrect regions being mapped. The following snippet from /sys/kernel/debug/kernel_page_tables shows how, when the kernel is loaded 2 MB above the base of DRAM at 0x40000000, the first 2 MB of memory (which may be inaccessible from non-secure EL1 or just reserved by the firmware) is inadvertently mapped into the end of the module region. ---[ Modules start ]--- 0xfffffdffffe00000-0xfffffe0000000000 2M RW NX ... UXN MEM/NORMAL ---[ Modules end ]--- ---[ Kernel Mapping ]--- 0xfffffe0000000000-0xfffffe0000090000 576K RW NX ... UXN MEM/NORMAL 0xfffffe0000090000-0xfffffe0000200000 1472K ro x ... UXN MEM/NORMAL 0xfffffe0000200000-0xfffffe0000800000 6M ro x ... UXN MEM/NORMAL 0xfffffe0000800000-0xfffffe0000810000 64K ro x ... UXN MEM/NORMAL 0xfffffe0000810000-0xfffffe0000a00000 1984K RW NX ... UXN MEM/NORMAL 0xfffffe0000a00000-0xfffffe00ffe00000 4084M RW NX ... UXN MEM/NORMAL The same issue is likely to occur on 16k pages kernels whose load address is not a multiple of 32 MB (i.e., SECTION_SIZE). So round to SWAPPER_BLOCK_SIZE instead of SECTION_SIZE. Fixes: da141706aea5 ("arm64: add better page protections to arm64") Signed-off-by: Ard Biesheuvel <[email protected]> Acked-by: Mark Rutland <[email protected]> Acked-by: Laura Abbott <[email protected]> Cc: <[email protected]> # 4.0+ Signed-off-by: Catalin Marinas <[email protected]>
2015-11-17drm/core: Fix old_fb handling in pan_display_atomic.Maarten Lankhorst1-22/+8
Don't touch plane->old_fb/fb without having the right locks held. Signed-off-by: Maarten Lankhorst <[email protected]> Reviewed-by: Daniel Vetter <[email protected]> Signed-off-by: Jani Nikula <[email protected]> Link: http://patchwork.freedesktop.org/patch/msgid/[email protected]
2015-11-17drm/core: Fix old_fb handling in restore_fbdev_mode_atomic.Maarten Lankhorst1-15/+6
Don't touch plane->old_fb/fb without having the right locks held. Signed-off-by: Maarten Lankhorst <[email protected]> Reviewed-by: Daniel Vetter <[email protected]> Signed-off-by: Jani Nikula <[email protected]> Link: http://patchwork.freedesktop.org/patch/msgid/[email protected]
2015-11-17drm/atomic: add a drm_atomic_clean_old_fb helper.Maarten Lankhorst2-18/+43
This is useful for all the boilerplate code about cleaning old_fb. Signed-off-by: Maarten Lankhorst <[email protected]> Reviewed-by: Daniel Vetter <[email protected]> Signed-off-by: Jani Nikula <[email protected]> Link: http://patchwork.freedesktop.org/patch/msgid/[email protected]
2015-11-17drm/core: Fix old_fb handling in drm_mode_atomic_ioctl.Maarten Lankhorst1-1/+2
plane_mask should be cleared inside the retry loop, because it gets reset on every retry. Without this fix the plane->fb refcounting might get out of sync on retries, resulting in either leaked memory or use-after-free. Signed-off-by: Maarten Lankhorst <[email protected]> Cc: [email protected] #v4.3 Reviewed-by: Daniel Vetter <[email protected]> Signed-off-by: Jani Nikula <[email protected]> Link: http://patchwork.freedesktop.org/patch/msgid/[email protected]
2015-11-17drm/core: Set legacy_cursor_update in drm_atomic_helper_disable_plane.Maarten Lankhorst1-3/+3
legacy_cursor_update was being set in restore_fbdev_mode_atomic which was probably unintended. Fix this by only setting it in the function that needs it. This oversight was introduced in commit bbb1e52402b2a288b09ae37e8182599931c7e9df Author: Rob Clark <[email protected]> Date: Tue Aug 25 15:35:58 2015 -0400 drm/fb-helper: atomic restore_fbdev_mode()... Signed-off-by: Maarten Lankhorst <[email protected]> Reviewed-by: Daniel Vetter <[email protected]> [Jani: checkpatch fix] Signed-off-by: Jani Nikula <[email protected]> Link: http://patchwork.freedesktop.org/patch/msgid/[email protected]
2015-11-16dax: disable pmd mappingsDan Williams2-0/+10
While dax pmd mappings are functional in the nominal path they trigger kernel crashes in the following paths: BUG: unable to handle kernel paging request at ffffea0004098000 IP: [<ffffffff812362f7>] follow_trans_huge_pmd+0x117/0x3b0 [..] Call Trace: [<ffffffff811f6573>] follow_page_mask+0x2d3/0x380 [<ffffffff811f6708>] __get_user_pages+0xe8/0x6f0 [<ffffffff811f7045>] get_user_pages_unlocked+0x165/0x1e0 [<ffffffff8106f5b1>] get_user_pages_fast+0xa1/0x1b0 kernel BUG at arch/x86/mm/gup.c:131! [..] Call Trace: [<ffffffff8106f34c>] gup_pud_range+0x1bc/0x220 [<ffffffff8106f634>] get_user_pages_fast+0x124/0x1b0 BUG: unable to handle kernel paging request at ffffea0004088000 IP: [<ffffffff81235f49>] copy_huge_pmd+0x159/0x350 [..] Call Trace: [<ffffffff811fad3c>] copy_page_range+0x34c/0x9f0 [<ffffffff810a0daf>] copy_process+0x1b7f/0x1e10 [<ffffffff810a11c1>] _do_fork+0x91/0x590 All of these paths are interpreting a dax pmd mapping as a transparent huge page and making the assumption that the pfn is covered by the memmap, i.e. that the pfn has an associated struct page. PTE mappings do not suffer the same fate since they have the _PAGE_SPECIAL flag to cause the gup path to fault. We can do something similar for the PMD path, or otherwise defer pmd support for cases where a struct page is available. For now, 4.4-rc and -stable need to disable dax pmd support by default. For development the "depends on BROKEN" line can be removed from CONFIG_FS_DAX_PMD. Cc: <[email protected]> Cc: Jan Kara <[email protected]> Cc: Dave Chinner <[email protected]> Cc: Matthew Wilcox <[email protected]> Cc: Kirill A. Shutemov <[email protected]> Reported-by: Ross Zwisler <[email protected]> Signed-off-by: Dan Williams <[email protected]>
2015-11-16MAINTAINERS: [email protected] is moderated for non-subscribersGeert Uytterhoeven1-2/+2
Signed-off-by: Geert Uytterhoeven <[email protected]> Signed-off-by: David Howells <[email protected]> Signed-off-by: Al Viro <[email protected]>
2015-11-16FS-Cache: Add missing initialization of ret in cachefiles_write_page()Geert Uytterhoeven1-1/+1
fs/cachefiles/rdwr.c: In function ‘cachefiles_write_page’: fs/cachefiles/rdwr.c:882: warning: ‘ret’ may be used uninitialized in this function If the jump to label "error" is taken, "ret" will indeed be uninitialized, and random stack data may be printed by the debug code. Fixes: 102f4d900c9c8f5e ("FS-Cache: Handle a write to the page immediately beyond the EOF marker") Signed-off-by: Geert Uytterhoeven <[email protected]> Signed-off-by: David Howells <[email protected]> Signed-off-by: Al Viro <[email protected]>
2015-11-16MAINTAINERS: brcmnand: Add Broadcom internal mailing-listFlorian Fainelli1-0/+1
The Broadcom NAND driver is used by many different groups at Broadcom now, so use the same mailing-list we use for other areas of the kernel. Signed-off-by: Florian Fainelli <[email protected]> Signed-off-by: Brian Norris <[email protected]>
2015-11-17HID: wacom: fixup quirks setup for WACOM_DEVICETYPE_PADJiri Kosina1-1/+1
Given that INTUOSHT < BAMBOO_PT features->type >= INTUOSHT || features->type <= BAMBOO_PT condition is always true, and therefore device_type is under certain circumstances wrongly set with WACOM_DEVICETYPE_PAD bit set. Fix the condition so that it actually represents the range as intended. Reported-by: David Binderman <[email protected]> Signed-off-by: Jiri Kosina <[email protected]>
2015-11-16ACPI-EC: Drop unnecessary check made before calling acpi_ec_delete_query()Markus Elfring1-1/+1
The acpi_ec_delete_query() function tests whether its argument is NULL and then returns immediately. Thus the test around the call is not needed. This issue was detected by using the Coccinelle software. Signed-off-by: Markus Elfring <[email protected]> [ rjw: Subject ] Signed-off-by: Rafael J. Wysocki <[email protected]>
2015-11-16Revert "ACPI / SBS: Add 5 us delay to fix SBS hangs on MacBook"Chris Bainbridge1-22/+0
Revert commit 3349fb64b292 (ACPI / SBS: Add 5 us delay to fix SBS hangs on MacBook), since the delay introduced by it is not necessary any more after commit add68d6aa9e2 (ACPI / SMBus: Fix boot stalls / high CPU caused by reentrant code). Signed-off-by: Chris Bainbridge <[email protected]> [ rjw: Changelog ] Signed-off-by: Rafael J. Wysocki <[email protected]>
2015-11-16ACPI / SMBus: Fix boot stalls / high CPU caused by reentrant codeChris Bainbridge1-19/+7
In the SBS initialisation, a reentrant call to wait_event_timeout() causes an intermittent boot stall of several minutes usually following the "Switching to clocksource tsc" message. Another symptom of this bug is high CPU usage from programs (Firefox, upowerd) querying the battery state. This is caused by: 1. drivers/acpi/sbshc.c wait_transaction_complete() calls wait_event_timeout(): if (wait_event_timeout(hc->wait, smb_check_done(hc), msecs_to_jiffies(timeout))) 2. ___wait_event sets task state to uninterruptible 3. ___wait_event calls the "condition" smb_check_done() 4. smb_check_done (sbshc.c) calls through to ec_read() in drivers/acpi/ec.c 5. ec_guard() is reached which calls wait_event_timeout() if (wait_event_timeout(ec->wait, ec_transaction_completed(ec), guard)) ie. wait_event_timeout() is being called again inside evaluation of the previous wait_event_timeout() condition 5. The EC IRQ handler calls wake_up() and wakes up the sleeping task in ec_guard() 6. The task is now in state running even though the wait "condition" is still being evaluated 7. The "condition" check returns false so ___wait_event calls schedule_timeout() 8. Since the task state is running, the scheduler immediately schedules it again 9. This loop usually repeats for around 250 seconds even though the original wait_event_timeout was only 1000ms. The timeout is incorrect because each call to schedule_timeout() usually returns immediately, taking less than 1ms, so the jiffies timeout counter is not decremented. The task is now stuck in a running state, and so is highly likely to be immediately rescheduled, which takes less than a jiffy. The loop will never exit if all schedule_timeout() calls take less than a jiffy. Fix this by replacing SMBus reads in the wait_event_timeout condition with checks of a boolean value that is updated by the EC query handler. Link: https://bugzilla.kernel.org/show_bug.cgi?id=107191 Link: https://lkml.org/lkml/2015/11/6/776 Signed-off-by: Chris Bainbridge <[email protected]> Signed-off-by: Rafael J. Wysocki <[email protected]>
2015-11-16ipg: Remove ipg driverOndrej Zary7-3075/+0
Now that IP1000A chips are supported by dl2k driver, the buggy ipg driver can be removed. Signed-off-by: Ondrej Zary <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2015-11-16dl2k: Add support for IP1000A-based cardsOndrej Zary3-6/+69
Add support for IP1000A chips to dl2k driver. IP1000A chip looks like a TC9020 with integrated PHY. This allows IP1000A chips to work reliably because the ipg driver is buggy - it loses packets under load and then completely stops transmitting data. Tested with Asus NX1101 v2.0 at 10, 100 and 1000Mbps: vendor=0x13f0 device=0x1023 (rev 0x41) subsystem vendor=0x1043 device=0x8180 MAC address registers access needed to be changed from 8-bit to 16-bit because 8-bit does not work on IP1000A. 8-bit access is not even allowed in the TC9020 datasheet (although it worked). 16-bit access works on both. Tested that it does not break D-Link DGE-550T (DL-2000 chip, probably a rebranded TC9020): vendor=0x1186 device=0x4000 (rev 0x0c) subsystem vendor=0x1186 device=0x4000 Signed-off-by: Ondrej Zary <[email protected]> Reviewed-by: Andy Shevchenko <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2015-11-16PM / wakeirq: check that wake IRQ is valid before accepting itDmitry Torokhov1-0/+6
Check that IRQ number passed to dev_pm_set_wake_irq() and dev_pm_set_dedicated_wake_irq() is valid (not negative) before accepting it. Signed-off-by: Dmitry Torokhov <[email protected]> Signed-off-by: Rafael J. Wysocki <[email protected]>
2015-11-16drm/amdgpu: remove the unnecessary parameter adev for amdgpu_sa_bo_new()Junwei Zhang4-8/+6
Signed-off-by: Junwei Zhang <[email protected]> Reviewed-by: Christian König <[email protected]>
2015-11-16drm/amdgpu: wait interruptible when semaphores are disabled v2Christian König1-2/+8
Otherwise debugging locked up processes isn't possible. v2: rebased Signed-off-by: Christian König <[email protected]> Reviewed-by: Alex Deucher <[email protected]> (v1)
2015-11-16Merge branch 'pm-tools'Rafael J. Wysocki2-6/+5
* pm-tools: x86: remove unused definition of MSR_NHM_PLATFORM_INFO tools/power turbostat: use new name for MSR_PLATFORM_INFO
2015-11-16snmp: Remove duplicate OUTMCAST stat incrementNeil Horman1-2/+0
the OUTMCAST stat is double incremented, getting bumped once in the mcast code itself, and again in the common ip output path. Remove the mcast bump, as its not needed Validated by the reporter, with good results Signed-off-by: Neil Horman <[email protected]> Reported-by: Claus Jensen <[email protected]> CC: Claus Jensen <[email protected]> CC: David Miller <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2015-11-16net: thunder: Check for driver data in nicvf_remove()Pavel Fedin1-5/+8
In some cases the crash is caused by nicvf_remove() being called from outside. For example, if we try to feed the device to vfio after the probe has failed for some reason. So, move the check to better place. Signed-off-by: Pavel Fedin <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2015-11-16net/core: use netdev name in warning if no parentBjørn Mork1-5/+8
A recent flaw in the netdev feature setting resulted in warnings like this one from VLAN interfaces: WARNING: CPU: 1 PID: 4975 at net/core/dev.c:2419 skb_warn_bad_offload+0xbc/0xcb() : caps=(0x00000000001b5820, 0x00000000001b5829) len=2782 data_len=0 gso_size=1348 gso_type=16 ip_summed=3 The ":" is supposed to be preceded by a driver name, but in this case it is an empty string since the device has no parent. There are many types of network devices without a parent. The anonymous warnings for these devices can be hard to debug. Log the network device name instead in these cases to assist further debugging. This is mostly similar to how __netdev_printk() handles orphan devices. Signed-off-by: Bjørn Mork <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2015-11-16af_unix: don't append consumed skbs to sk_receive_queueHannes Frederic Sowa1-0/+1
In case multiple writes to a unix stream socket race we could end up in a situation where we pre-allocate a new skb for use in unix_stream_sendpage but have to free it again in the locked section because another skb has been appended meanwhile, which we must use. Accidentally we didn't clear the pointer after consuming it and so we touched freed memory while appending it to the sk_receive_queue. So, clear the pointer after consuming the skb. This bug has been found with syzkaller (http://github.com/google/syzkaller) by Dmitry Vyukov. Fixes: 869e7c62486e ("net: af_unix: implement stream sendpage support") Reported-by: Dmitry Vyukov <[email protected]> Cc: Dmitry Vyukov <[email protected]> Cc: Eric Dumazet <[email protected]> Signed-off-by: Hannes Frederic Sowa <[email protected]> Acked-by: Eric Dumazet <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2015-11-16net: switchdev: fix return code of fdb_dump stubDragos Tatulea1-1/+1
rtnl_fdb_dump always expects an index to be returned by the ndo_fdb_dump op, but when CONFIG_NET_SWITCHDEV is off, it returns an error. Fix that by returning the given unmodified idx. A similar fix was 0890cf6cb6ab ("switchdev: fix return value of switchdev_port_fdb_dump in case of error") but for the CONFIG_NET_SWITCHDEV=y case. Fixes: 45d4122ca7cd ("switchdev: add support for fdb add/del/dump via switchdev_port_obj ops.") Signed-off-by: Dragos Tatulea <[email protected]> Acked-by: Jiri Pirko <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2015-11-16bnx2x: Fix VLANs null-pointer for 57710, 57711Yuval Mintz1-1/+1
Commit 05cc5a39ddb7 "bnx2x: add vlan filtering offload" introduced a regression in regard for vlans for 57710, 57711 adapters - Loading 8021q module on a machine with such an adapter would cause a null pointer dereference, as the driver mistakenly publishes it has capabilities for vlan CTAG filtering. Reported-by: Otto Sabart <[email protected]> Signed-off-by: Yuval Mintz <[email protected]> Signed-off-by: Ariel Elior <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2015-11-16ravb: remove unhandle int causeMasaru Nagai1-2/+0
This driver does not handle the AVB-DMAC Receive FIFO Warning interrupt now, so the interrupt should not be enabled. Signed-off-by: Masaru Nagai <[email protected]> Signed-off-by: Yoshihiro Kaneko <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2015-11-16raw: increment correct SNMP counters for ICMP messagesBen Cartwright-Cox1-3/+5
Sending ICMP packets with raw sockets ends up in the SNMP counters logging the type as the first byte of the IPv4 header rather than the ICMP header. This is fixed by adding the IP Header Length to the casting into a icmphdr struct. Signed-off-by: Ben Cartwright-Cox <[email protected]> Acked-by: Eric Dumazet <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2015-11-16sfc: constify pci_error_handlers structuresJulia Lawall1-1/+1
This pci_error_handlers structure is never modified, like all the other pci_error_handlers structures, so declare it as const. Done with the help of Coccinelle. Signed-off-by: Julia Lawall <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2015-11-16net: cavium: liquidio: constify pci_error_handlers structuresJulia Lawall1-1/+1
This pci_error_handlers structure is never modified, like all the other pci_error_handlers structures, so declare it as const. Done with the help of Coccinelle. Signed-off-by: Julia Lawall <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2015-11-16Driver: Vmxnet3: Fix use of mfTableLen for big endian architecturesShrikrishna Khare2-5/+6
Signed-off-by: Shrikrishna Khare <[email protected]> Reported-by: Masao Uebayashi <[email protected]> Signed-off-by: Bhavesh Davda <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2015-11-16net: usb: cdc_ether: add Dell DW5580 as a mobile broadband adapterDaniele Palmas1-0/+5
Since Dell DW5580 is a 3G modem, this patch adds the device as a mobile broadband adapter Signed-off-by: Daniele Palmas <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2015-11-16net: fix __netdev_update_features return on ndo_set_features failureNikolay Aleksandrov1-1/+1
If ndo_set_features fails __netdev_update_features() will return -1 but this is wrong because it is expected to return 0 if no features were changed (see netdev_update_features()), which will cause a netdev notifier to be called without any actual changes. Fix this by returning 0 if ndo_set_features fails. Fixes: 6cb6a27c45ce ("net: Call netdev_features_change() from netdev_update_features()") CC: Michał Mirosław <[email protected]> Signed-off-by: Nikolay Aleksandrov <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2015-11-16net: fix feature changes on devices without ndo_set_featuresNikolay Aleksandrov1-0/+2
When __netdev_update_features() was updated to ensure some features are disabled on new lower devices, an error was introduced for devices which don't have the ndo_set_features() method set. Before we'll just set the new features, but now we return an error and don't set them. Fix this by returning the old behaviour and setting err to 0 when ndo_set_features is not present. Fixes: e7868a85e1b2 ("net/core: ensure features get disabled on new lower devs") CC: Jarod Wilson <[email protected]> CC: Jiri Pirko <[email protected]> CC: Ido Schimmel <[email protected]> CC: Sander Eikelenboom <[email protected]> CC: Andy Gospodarek <[email protected]> CC: Florian Fainelli <[email protected]> Signed-off-by: Nikolay Aleksandrov <[email protected]> Reviewed-by: Jiri Pirko <[email protected]> Reviewed-by: Andy Gospodarek <[email protected]> Reviewed-by: Jarod Wilson <[email protected]> Tested-by: Florian Fainelli <[email protected]> Tested-by: Dave Young <[email protected]> Tested-by: Christian Borntraeger <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2015-11-16switchdev: bridge: Check return code is not EOPNOTSUPPIdo Schimmel2-2/+2
When NET_SWITCHDEV=n, switchdev_port_attr_set simply returns EOPNOTSUPP. In this case we should not emit errors and warnings to the kernel log. Reported-by: Sander Eikelenboom <[email protected]> Tested-by: Christian Borntraeger <[email protected]> Fixes: 0bc05d585d38 ("switchdev: allow caller to explicitly request attr_set as deferred") Fixes: 6ac311ae8bfb ("Adding switchdev ageing notification on port bridged") Signed-off-by: Ido Schimmel <[email protected]> Signed-off-by: Jiri Pirko <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2015-11-16be2net: replace hardcoded values with existing defineIvan Vecera2-2/+3
Signed-off-by: Ivan Vecera <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2015-11-16be2net: remove unused local rsstable arrayIvan Vecera1-14/+2
Remove rsstable array and its initialization from be_set_rss_hash_opts(). The array became unused after "e255787 be2net: Support for configurable RSS hash key". The initial RSS table is now filled and stored for later usage during Rx queue creation. Signed-off-by: Ivan Vecera <[email protected]> Acked-by: Sathya Perla <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2015-11-16ravb: Fix int mask value overwritten issueMasaru Nagai1-2/+4
When RX/TX interrupt for Network Control queue and Best Effort queue is issued at the same time, the interrupt mask of Network Control queue will be reset when the mask of Best Effort queue is set. This patch fixes this problem. Signed-off-by: Masaru Nagai <[email protected]> Signed-off-by: Yoshihiro Kaneko <[email protected]> Acked-by: Geert Uytterhoeven <[email protected]> Acked-by: Simon Horman <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2015-11-16net: smsc911x: Reset PHY during initializationPavel Fedin1-11/+6
On certain hardware after software reboot the chip may get stuck and fail to reinitialize during reset. This can be fixed by ensuring that PHY is reset too. Old PHY resetting method required operational MDIO interface, therefore the chip should have been already set up. In order to be able to function during probe, it is changed to use PMT_CTRL register. The problem could be observed on SMDK5410 board. Signed-off-by: Pavel Fedin <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2015-11-16bpf, arm64: start flushing icache range from headerDaniel Borkmann1-1/+1
While recently going over ARM64's BPF code, I noticed that the icache range we're flushing should start at header already and not at ctx.image. Reason is that after b569c1c622c5 ("net: bpf: arm64: address randomize and write protect JIT code"), we also want to make sure to flush the random-sized trap in front of the start of the actual program (analogous to x86). No operational differences from user side. Signed-off-by: Daniel Borkmann <[email protected]> Acked-by: Zi Shen Lim <[email protected]> Cc: Alexei Starovoitov <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2015-11-16bpf, arm: start flushing icache range from headerDaniel Borkmann1-1/+1
During review I noticed that the icache range we're flushing should start at header already and not at ctx.image. Reason is that after 55309dd3d4cd ("net: bpf: arm: address randomize and write protect JIT code"), we also want to make sure to flush the random-sized trap in front of the start of the actual program (analogous to x86). No operational differences from user side. Signed-off-by: Daniel Borkmann <[email protected]> Tested-by: Nicolas Schichan <[email protected]> Cc: Alexei Starovoitov <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2015-11-16bpf: samples: exclude asm/sysreg.h for arm64Yang Shi1-2/+5
commit 338d4f49d6f7114a017d294ccf7374df4f998edc ("arm64: kernel: Add support for Privileged Access Never") includes sysreg.h into futex.h and uaccess.h. But, the inline assembly used by asm/sysreg.h is incompatible with llvm so it will cause BPF samples build failure for ARM64. Since sysreg.h is useless for BPF samples, just exclude it from Makefile via defining __ASM_SYSREG_H. Signed-off-by: Yang Shi <[email protected]> Acked-by: Alexei Starovoitov <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2015-11-16arm64: bpf: fix JIT frame pointer setupYang Shi1-3/+3
BPF fp should point to the top of the BPF prog stack. The original implementation made it point to the bottom incorrectly. Move A64_SP to fp before reserve BPF prog stack space. CC: Zi Shen Lim <[email protected]> CC: Xi Wang <[email protected]> Signed-off-by: Yang Shi <[email protected]> Reviewed-by: Zi Shen Lim <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2015-11-16net: phy: vitesse: add support for VSC8601Måns Rullgård1-1/+15
This adds support for the Vitesse VSC8601 PHY. Generic functions are used for everything except interrupt handling. Signed-off-by: Mans Rullgard <[email protected]> Reviewed-by: Florian Fainelli <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2015-11-16net: phy: at803x: support interrupt on 8030 and 8035Måns Rullgård1-0/+4
Commit 77a993942 "phy/at8031: enable at8031 to work on interrupt mode" added interrupt support for the 8031 PHY but left out the other two chips supported by this driver. This patch sets the .ack_interrupt and .config_intr functions for the 8030 and 8035 drivers as well. Signed-off-by: Mans Rullgard <[email protected]> Reviewed-by: Florian Fainelli <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2015-11-16ip_tunnel: disable preemption when updating per-cpu tstatsJason A. Donenfeld2-2/+4
Drivers like vxlan use the recently introduced udp_tunnel_xmit_skb/udp_tunnel6_xmit_skb APIs. udp_tunnel6_xmit_skb makes use of ip6tunnel_xmit, and ip6tunnel_xmit, after sending the packet, updates the struct stats using the usual u64_stats_update_begin/end calls on this_cpu_ptr(dev->tstats). udp_tunnel_xmit_skb makes use of iptunnel_xmit, which doesn't touch tstats, so drivers like vxlan, immediately after, call iptunnel_xmit_stats, which does the same thing - calls u64_stats_update_begin/end on this_cpu_ptr(dev->tstats). While vxlan is probably fine (I don't know?), calling a similar function from, say, an unbound workqueue, on a fully preemptable kernel causes real issues: [ 188.434537] BUG: using smp_processor_id() in preemptible [00000000] code: kworker/u8:0/6 [ 188.435579] caller is debug_smp_processor_id+0x17/0x20 [ 188.435583] CPU: 0 PID: 6 Comm: kworker/u8:0 Not tainted 4.2.6 #2 [ 188.435607] Call Trace: [ 188.435611] [<ffffffff8234e936>] dump_stack+0x4f/0x7b [ 188.435615] [<ffffffff81915f3d>] check_preemption_disabled+0x19d/0x1c0 [ 188.435619] [<ffffffff81915f77>] debug_smp_processor_id+0x17/0x20 The solution would be to protect the whole this_cpu_ptr(dev->tstats)/u64_stats_update_begin/end blocks with disabling preemption and then reenabling it. Signed-off-by: Jason A. Donenfeld <[email protected]> Acked-by: Hannes Frederic Sowa <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2015-11-16mtd: nand: fix shutdown/reboot for multi-chip systemsBrian Norris1-1/+1
If multiple NAND chips are registered to the same controller, then when rebooting the system, the first one will grab the controller lock, while the second will wait forever for the first one to release it. i.e., a classic deadlock. This problem was solved for a similar case (suspend/resume) back in commit 6b0d9a841249 ("mtd: nand: fix multi-chip suspend problem"), and the shutdown state really isn't much different for us, so rather than adding a new special case to nand_get_device(), we can just overload the FL_PM_SUSPENDED state. Now, multiple chips can "get" the same controller lock (preventing further I/O), while we still allow other chips to pass through nand_shutdown(). Original report: http://thread.gmane.org/gmane.linux.drivers.mtd/59726 http://lists.infradead.org/pipermail/linux-mtd/2015-July/059992.html Fixes: 72ea403669c7 ("mtd: nand: added nand_shutdown") Reported-by: Andrew E. Mileski <[email protected]> Signed-off-by: Brian Norris <[email protected]> Cc: Scott Branden <[email protected]> Cc: Andrew E. Mileski <[email protected]> Acked-by: Scott Branden <[email protected]> Reviewed-by: Boris Brezillon <[email protected]>
2015-11-16mtd: jz4740_nand: fix build on jz4740 after removing gpio.hBrian Norris1-0/+1
Fallout from commit 832f5dacfa0b ("MIPS: Remove all the uses of custom gpio.h") We see errors like this: drivers/mtd/nand/jz4740_nand.c: In function 'jz_nand_detect_bank': drivers/mtd/nand/jz4740_nand.c:340:9: error: 'JZ_GPIO_MEM_CS0' undeclared (first use in this function) drivers/mtd/nand/jz4740_nand.c:340:9: note: each undeclared identifier is reported only once for each function it appears in drivers/mtd/nand/jz4740_nand.c:359:2: error: implicit declaration of function 'jz_gpio_set_function' [-Werror=implicit-function-declaration] drivers/mtd/nand/jz4740_nand.c:359:29: error: 'JZ_GPIO_FUNC_MEM_CS0' undeclared (first use in this function) drivers/mtd/nand/jz4740_nand.c:399:29: error: 'JZ_GPIO_FUNC_NONE' undeclared (first use in this function) drivers/mtd/nand/jz4740_nand.c: In function 'jz_nand_probe': drivers/mtd/nand/jz4740_nand.c:528:13: error: 'JZ_GPIO_MEM_CS0' undeclared (first use in this function) drivers/mtd/nand/jz4740_nand.c: In function 'jz_nand_remove': drivers/mtd/nand/jz4740_nand.c:555:14: error: 'JZ_GPIO_MEM_CS0' undeclared (first use in this function) Patched similarly to: https://patchwork.linux-mips.org/patch/11089/ Fixes: 832f5dacfa0b ("MIPS: Remove all the uses of custom gpio.h") Signed-off-by: Brian Norris <[email protected]>
2015-11-16clocksource: Disallow drivers for ARCH_USES_GETTIMEOFFSETArnd Bergmann1-0/+1
We can now select clocksource drivers like ti-32k and CONFIG_OF on ancient machines that still use gettimeoffset, and the combination results in a link error. arch/arm/kernel/built-in.o: In function `time_init': (.init.text+0xc28): undefined reference to `clocksource_probe' The reason for this is that the Makefile is hidden behind CONFIG_ARCH_USES_GETTIMEOFFSET, but the Kconfig file is not, and it has shown up just now because the ti-32k driver was added and can be selected using COMPILE_TEST on all platforms. This patch hides the Kconfig menu in CONFIG_ARCH_USES_GETTIMEOFFSET as well. Fixes: dfedaf105d60 "clocksource: ti-32k: make it depend on GENERIC_CLOCKSOURCE" Signed-off-by: Arnd Bergmann <[email protected]> Cc: [email protected] Cc: Felipe Balbi <[email protected]> Cc: Tony Lindgren <[email protected]> Cc: Daniel Lezcano <[email protected]> Link: http://lkml.kernel.org/r/7579471.4N90fYPQOK@wuerfel Signed-off-by: Thomas Gleixner <[email protected]>
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