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2016-01-28storvsc: Install the storvsc specific timeout handler for FC devicesK. Y. Srinivasan1-0/+6
The default timeout routine used for FC transport is not suitable for FC devices managed by storvsc since FC devices managed by storvsc driver do not have an rport associated with them. Use the time out handler used for SCSI devices for FC devices as well. Signed-off-by: K. Y. Srinivasan <kys@microsoft.com> Reviewed-by: Alex Ng <alexng@microsoft.com> Tested-by: Vivek Yadav <vyadav@microsoft.com> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-01-26hisi_sas: fix v1 hw check for slot errorJohn Garry1-6/+3
Completion header bit CMPLT_HDR_RSPNS_XFRD flags whether the response frame is received into host memory, and not whether the response frame has an error. As such, change the decision on whether a slot has an error. Also redundant check on CMPLT_HDR_CMD_CMPLT_MSK is removed. Fixes: 27a3f229 ("hisi_sas: Add cq interrupt handler") Signed-off-by: John Garry <john.garry@huawei.com> Tested-by: Ricardo Salveti <ricardo.salveti@linaro.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-01-26hisi_sas: add dependency for HAS_IOMEMJohn Garry1-1/+1
Not every arch has io, so fix build by adding necessary dependency. Signed-off-by: John Garry <john.garry@huawei.com> Suggested-by: Richard Weinberger <richard@nod.at> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-01-20sd: Optimal I/O size is in bytes, not sectorsMartin K. Petersen1-1/+1
Commit ca369d51b3e1 ("block/sd: Fix device-imposed transfer length limits") accidentally switched optimal I/O size reporting from bytes to block layer sectors. Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Reported-by: Christian Borntraeger <borntraeger@de.ibm.com> Tested-by: Christian Borntraeger <borntraeger@de.ibm.com> Fixes: ca369d51b3e1649be4a72addd6d6a168cfb3f537 Cc: stable@vger.kernel.org # 4.4+ Reviewed-by: James E.J. Bottomley <James.Bottomley@HansenPartnership.com> Reviewed-by: Ewan D. Milne <emilne@redhat.com> Reviewed-by: Matthew R. Ochs <mrochs@linux.vnet.ibm.com>
2016-01-20hisi_sas: Restrict SCSI_HISI_SAS to arm64Geert Uytterhoeven1-0/+1
The HiSilicon SAS HBA is available in HiSilicon arm64 SoCs only. Restrict it to arm64, unless compile-testing. Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Reviewed-by: John Garry <john.garry@huawei.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-01-20hisi_sas: SCSI_HISI_SAS should depend on HAS_DMAGeert Uytterhoeven1-0/+1
If NO_DMA=y: ERROR: "dma_map_sg" [drivers/scsi/hisi_sas/hisi_sas_v1_hw.ko] undefined! ERROR: "dma_pool_alloc" [drivers/scsi/hisi_sas/hisi_sas_v1_hw.ko] undefined! ERROR: "dma_unmap_sg" [drivers/scsi/hisi_sas/hisi_sas_v1_hw.ko] undefined! ERROR: "dma_unmap_sg" [drivers/scsi/hisi_sas/hisi_sas_main.ko] undefined! ERROR: "dma_set_mask" [drivers/scsi/hisi_sas/hisi_sas_main.ko] undefined! ERROR: "dma_map_sg" [drivers/scsi/hisi_sas/hisi_sas_main.ko] undefined! ERROR: "dma_pool_destroy" [drivers/scsi/hisi_sas/hisi_sas_main.ko] undefined! ERROR: "dma_free_coherent" [drivers/scsi/hisi_sas/hisi_sas_main.ko] undefined! ERROR: "dma_pool_free" [drivers/scsi/hisi_sas/hisi_sas_main.ko] undefined! ERROR: "dma_alloc_coherent" [drivers/scsi/hisi_sas/hisi_sas_main.ko] undefined! ERROR: "dma_pool_alloc" [drivers/scsi/hisi_sas/hisi_sas_main.ko] undefined! ERROR: "dma_supported" [drivers/scsi/hisi_sas/hisi_sas_main.ko] undefined! ERROR: "dma_pool_create" [drivers/scsi/hisi_sas/hisi_sas_main.ko] undefined! Add a dependency on HAS_DMA to fix this. Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Reviewed-by: John Garry <john.garry@huawei.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-01-20FRV: Mark architecture orphanedDavid Howells1-2/+1
Mark the FRV architecture orphaned in the MAINTAINERS file. Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-01-20MAINTAINERS: Update mailing list for Renesas SoC DevelopmentSimon Horman1-8/+8
Update the mailing list used for development of support for Renesas SoCs and related drivers. Up until now the linux-sh mailing list has been used, however, Renesas SoCs are now much wider than the SH architecture and there is some desire from some for the linux-sh list to refocus on discussion of the work on the SH architecture. Signed-off-by: Simon Horman <horms+renesas@verge.net.au> Acked-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Acked-by: Magnus Damm <damm@opensource.se> Acked-by: Geert Uytterhoeven <geert+renesas@glider.be> Acked-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by: Rich Felker <dalias@libc.org> Acked-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-01-20mm: avoid uninitialized variable in tracepointArnd Bergmann1-1/+1
A newly added tracepoint in the hugepage code uses a variable in the error handling that is not initialized at that point: include/trace/events/huge_memory.h:81:230: error: 'isolated' may be used uninitialized in this function [-Werror=maybe-uninitialized] The result is relatively harmless, as the trace data will in rare cases contain incorrect data. This works around the problem by adding an explicit initialization. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Fixes: 7d2eba0557c1 ("mm: add tracepoint for scanning pages") Reviewed-by: Ebru Akagunduz <ebru.akagunduz@gmail.com> Acked-by: David Rientjes <rientjes@google.com> Cc: Kirill A. Shutemov <kirill@shutemov.name> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-01-19surface pro 4: fix compare_const_fl.cocci warningsJulia Lawall1-1/+1
Move constants to the right of binary operators. Generated by: scripts/coccinelle/misc/compare_const_fl.cocci CC: Weng Xuetian <wengxt@gmail.com> Signed-off-by: Fengguang Wu <fengguang.wu@intel.com> Signed-off-by: Julia Lawall <julia.lawall@lip6.fr> Signed-off-by: Darren Hart <dvhart@linux.intel.com>
2016-01-19surface pro 4: Add support for Surface Pro 4 ButtonsWeng Xuetian2-6/+8
Surface Pro 4 buttons are managed by a device with _HID "MSHW0040" different from Surface Pro 3. This commit adds MSHW0040 to id list to support the Surface Pro 4. Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=109871 Signed-off-by: Weng Xuetian <wengxt@gmail.com> Acked-by: Chen Yu <yu.c.chen@intel.com> Signed-off-by: Darren Hart <dvhart@linux.intel.com>
2016-01-19platform:x86: Add Intel Telemetry Debugfs interfacesSouvik Kumar Chakravarty3-1/+1033
This implements debugfs interfaces for reading the telemetry samples from SSRAM and configuring firmware trace verbosity. Interface created under /sys/kernel/debug/telemetry soc_states: SoC Device and Low Power States pss_info: Info from the Primary SubSystem ioss_info: Info from IO SubSusytem pss_trace_verbosity: Read/Modify PSS F/W trace verbosity ioss_trace_verbosity: Read/Modify IOSS F/W trace verbosity. Signed-off-by: Souvik Kumar Chakravarty <souvik.k.chakravarty@intel.com> Signed-off-by: Darren Hart <dvhart@linux.intel.com>
2016-01-19platform:x86: Add Intel telemetry platform deviceSouvik Kumar Chakravarty1-0/+96
Telemetry Device is created by the pmc_ipc driver. Resources are populated according SSRAM region as indicated by the BIOS tables. Signed-off-by: Souvik Kumar Chakravarty <souvik.k.chakravarty@intel.com> Signed-off-by: Darren Hart <dvhart@linux.intel.com>
2016-01-19platform:x86: Add Intel telemetry platform driverSouvik Kumar Chakravarty3-1/+1209
Telemetry platform driver implements the telemetry interfaces. Currently it supports ApolloLake. It uses the PUNIT and PMC IPC interfaces to configure the telemetry samples to read. The samples are read from a Secure SRAM region. Signed-off-by: Souvik Kumar Chakravarty <souvik.k.chakravarty@intel.com> Signed-off-by: Darren Hart <dvhart@linux.intel.com>
2016-01-19platform/x86: Add Intel Telemetry Core DriverSouvik Kumar Chakravarty5-0/+630
Intel PM Telemetry is a software mechanism via which various SoC PM and performance related parameters like PM counters, firmware trace verbosity, the status of different devices inside the SoC, etc. can be monitored and analyzed. The different samples that may be monitored can be configured at runtime via exported APIs. This patch adds the telemetry core driver that implements basic exported APIs. Signed-off-by: Souvik Kumar Chakravarty <souvik.k.chakravarty@intel.com> Signed-off-by: Darren Hart <dvhart@linux.intel.com>
2016-01-19intel_punit_ipc: add NULL check for input parametersQipeng Zha1-6/+10
intel_punit_ipc_command() maybe called when in or out data pointers are NULL. Signed-off-by: Qipeng Zha <qipeng.zha@intel.com> Signed-off-by: Darren Hart <dvhart@linux.intel.com>
2016-01-19thinkpad_acpi: Add support for keyboard backlightPali Rohár1-0/+206
This patch adds support for controlling keyboard backlight via standard linux led class interface (::kbd_backlight). It uses ACPI HKEY device with MLCG and MLCS methods. Signed-off-by: Pali Rohár <pali.rohar@gmail.com> Tested-by: Fabio D'Urso <fabiodurso@hotmail.it> Acked-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br> Signed-off-by: Darren Hart <dvhart@linux.intel.com>
2016-01-19dell-wmi: Process only one event on devices with interface version 0Pali Rohár1-0/+16
BIOS/ACPI on devices with WMI interface version 0 does not clear buffer before filling it. So next time when BIOS/ACPI send WMI event which is smaller as previous then it contains garbage in buffer from previous event. BIOS/ACPI on devices with WMI interface version 1 clears buffer and sometimes send more events in buffer at one call. Since commit 83fc44c32ad8 ("dell-wmi: Update code for processing WMI events") dell-wmi process all events in buffer (and not just first). To prevent reading garbage from the buffer we process only the first event on devices with WMI interface version 0. Signed-off-by: Pali Rohár <pali.rohar@gmail.com> Tested-by: Gabriele Mazzotta <gabriele.mzt@gmail.com> Signed-off-by: Darren Hart <dvhart@linux.intel.com>
2016-01-19dell-wmi: Check if Dell WMI descriptor structure is validPali Rohár1-2/+78
After examining existing DSDT ACPI tables of more laptops and looking into Dell WMI document mentioned in ML dicussion archived at http://www.spinics.net/lists/platform-driver-x86/msg07220.html we will parse and check WMI descriptor if contains expected data. It is because WMI descriptor contains interface version number and it is needed to know in next commit. Signed-off-by: Pali Rohár <pali.rohar@gmail.com> Tested-by: Gabriele Mazzotta <gabriele.mzt@gmail.com> Signed-off-by: Darren Hart <dvhart@linux.intel.com>
2016-01-19tc1100-wmi: fix build warning when CONFIG_PM not enabledColin Ian King1-0/+2
Conditionally declare suspend_data on CONFIG_PM to avoid the following warning when CONFIG_OM is not enabled: drivers/platform/x86/tc1100-wmi.c:55:27: warning: 'suspend_data' defined but not used [-Wunused-variable] Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Darren Hart <dvhart@linux.intel.com>
2016-01-19asus-wireless: Add ACPI HID ATK4001João Paulo Rechi Vita1-0/+1
As reported in https://bugzilla.kernel.org/show_bug.cgi?id=98931#c22 in the Asus UX31A the Asus Wireless Radio Control device (ASHS) uses the HID "ATK4001". Signed-off-by: João Paulo Rechi Vita <jprvita@endlessm.com> Reported-by: Tasev Nikola <tasev.stefanoska@skynet.be> Signed-off-by: Darren Hart <dvhart@linux.intel.com>
2016-01-19platform/x86: Add Asus Wireless Radio Control driverJoão Paulo Rechi Vita4-0/+104
Some Asus notebooks like the Asus E202SA and the Asus X555UB have a separate ACPI device for notifications from the airplane mode hotkey. This device is called "Wireless Radio Control" in Asus websites and ASHS in the DSDT, and its ACPI _HID is ATK4002 in the two models mentioned above. For these models, when the airplane mode hotkey (Fn+F2) is pressed, a query 0x0B is started in the Embedded Controller, and all this query does is a notify ASHS with the value 0x88 (for acpi_osi >= "Windows 2012"): Scope (_SB.PCI0.SBRG.EC0) { (...) Method (_Q0B, 0, NotSerialized) // _Qxx: EC Query { If ((MSOS () >= OSW8)) { Notify (ASHS, 0x88) // Device-Specific } Else { (...) } } } Signed-off-by: João Paulo Rechi Vita <jprvita@endlessm.com> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Signed-off-by: Darren Hart <dvhart@linux.intel.com>
2016-01-19asus-wmi: drop to_platform_driver macroGeliang Tang1-3/+0
to_platform_driver has been defined in platform_device.h, so drop this repetitive macro in asus-wmi.c. Signed-off-by: Geliang Tang <geliangtang@163.com> Signed-off-by: Darren Hart <dvhart@linux.intel.com>
2016-01-19intel-hid: new hid event driver for hotkeysAlex Hung4-0/+308
This driver supports various HID events including hotkeys. Dell XPS 13 9350 requires it for the wireless hotkey. Signed-off-by: Alex Hung <alex.hung@canonical.com> Reviewed-and-tested-by: Andy Lutomirski <luto@kernel.org> [dvhart: Kconfig help typo fix and INPUT_SPARSEKMAP fix from Sedat Dilek] Signed-off-by: Darren Hart <dvhart@linux.intel.com>
2016-01-20KEYS: Fix keyring ref leak in join_session_keyring()Yevgeny Pats1-0/+1
This fixes CVE-2016-0728. If a thread is asked to join as a session keyring the keyring that's already set as its session, we leak a keyring reference. This can be tested with the following program: #include <stddef.h> #include <stdio.h> #include <sys/types.h> #include <keyutils.h> int main(int argc, const char *argv[]) { int i = 0; key_serial_t serial; serial = keyctl(KEYCTL_JOIN_SESSION_KEYRING, "leaked-keyring"); if (serial < 0) { perror("keyctl"); return -1; } if (keyctl(KEYCTL_SETPERM, serial, KEY_POS_ALL | KEY_USR_ALL) < 0) { perror("keyctl"); return -1; } for (i = 0; i < 100; i++) { serial = keyctl(KEYCTL_JOIN_SESSION_KEYRING, "leaked-keyring"); if (serial < 0) { perror("keyctl"); return -1; } } return 0; } If, after the program has run, there something like the following line in /proc/keys: 3f3d898f I--Q--- 100 perm 3f3f0000 0 0 keyring leaked-keyring: empty with a usage count of 100 * the number of times the program has been run, then the kernel is malfunctioning. If leaked-keyring has zero usages or has been garbage collected, then the problem is fixed. Reported-by: Yevgeny Pats <yevgeny@perception-point.io> Signed-off-by: David Howells <dhowells@redhat.com> Acked-by: Don Zickus <dzickus@redhat.com> Acked-by: Prarit Bhargava <prarit@redhat.com> Acked-by: Jarod Wilson <jarod@redhat.com> Signed-off-by: James Morris <james.l.morris@oracle.com>
2016-01-19Keyboard backlight control for some Vaio Fit modelsMattia Dongili1-20/+45
SVF1521P6EW, SVF1521DCXW, SVF13N1L2ES and likely most SVF*. do not expose separate timeout controls in auto mode. Signed-off-by: Dominik Matta <dominik@matta.sk> Signed-off-by: Mattia Dongili <malattia@linux.it> Signed-off-by: Darren Hart <dvhart@linux.intel.com>
2016-01-19platform/x86: Add rfkill dependency to ACPI_TOSHIBA entryAzael Avalos1-0/+1
Commit 2fdde83443aa ("toshiba_acpi: Add WWAN RFKill support") added WWAN rfkill support to the driver, but the KConfig entry was not updated to add the RFKill dependency, causing a broken build if RFKill is not selected. This patch adds the RFKILL dependency to the KConfig entry, fixing the build issue. Signed-off-by: Azael Avalos <coproscefalo@gmail.com> Signed-off-by: Darren Hart <dvhart@linux.intel.com>
2016-01-19platform:x86: add Intel P-Unit mailbox IPC driverQipeng Zha5-1/+449
This driver provides support for P-Unit mailbox IPC on Intel platforms. The heart of the P-Unit is the Foxton microcontroller and its firmware, which provide mailbox interface for power management usage. Signed-off-by: Qipeng Zha <qipeng.zha@intel.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Darren Hart <dvhart@linux.intel.com>
2016-01-19intel_pmc_ipc: update acpi resource structure for PunitQipeng Zha1-40/+78
BIOS restructure exported memory resources for Punit in acpi table, So update resources for Punit. Signed-off-by: Qipeng Zha <qipeng.zha@intel.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Darren Hart <dvhart@linux.intel.com>
2016-01-19ideapad-laptop: Add Lenovo ideapad Y700-17ISK to no_hw_rfkill dmi listJosh Boyer1-0/+7
One of the newest ideapad models also lacks a physical hw rfkill switch, and trying to read the hw rfkill switch through the ideapad module causes it to always reported blocking breaking wifi. Fix it by adding this model to the DMI list. BugLink: https://bugzilla.redhat.com/show_bug.cgi?id=1286293 Cc: stable@vger.kernel.org Signed-off-by: Josh Boyer <jwboyer@fedoraproject.org> Signed-off-by: Darren Hart <dvhart@linux.intel.com>
2016-01-19dell-wmi: Improve unknown hotkey handlingAndy Lutomirski1-4/+20
If DMI lists a hotkey that we don't recognize, log and ignore it instead of trying to map it to keycode 0. I haven't seen this happen, but it will help maintain the key map in the future and it will help avoid sending bogus events. This also improves the message that we log when we get an unknown key event. Signed-off-by: Andy Lutomirski <luto@kernel.org> Reviewed-by: Pali Rohár <pali.rohar@gmail.com> [dvhart: remove BUILD_BUG_ON per mutual agreement on list] Signed-off-by: Darren Hart <dvhart@linux.intel.com>
2016-01-19apple-gmux: Assign apple_gmux_data before registeringMatthew Garrett1-4/+6
Registering the handler after both GPUs will trigger a DDC switch for connector reprobing. This will oops if apple_gmux_data hasn't already been assigned. Reorder the code to do that. [Lukas: More generally, this commit fixes a race condition that is triggered by invoking a handler callback between the call to vga_switcheroo_register_handler() and the assignment of apple_gmux_data.] Tested-by: Pierre Moreau <pierre.morrow@free.fr> [MBP 5,3 2009 nvidia MCP79 + G96 pre-retina 15"] Tested-by: Paul Hordiienko <pvt.gord@gmail.com> [MBP 6,2 2010 intel ILK + nvidia GT216 pre-retina 15"] Tested-by: Lukas Wunner <lukas@wunner.de> [MBP 9,1 2012 intel IVB + nvidia GK107 pre-retina 15"] Tested-by: William Brown <william@blackhats.net.au> [MBP 8,2 2011 intel SNB + amd turks pre-retina 15"] Tested-by: Bruno Bierbaumer <bruno@bierbaumer.net> [MBP 11,3 2013 intel HSW + nvidia GK107 retina 15"] Signed-off-by: Matthew Garrett <matthew.garrett@nebula.com> Reviewed-by: Lukas Wunner <lukas@wunner.de> Signed-off-by: Lukas Wunner <lukas@wunner.de> Signed-off-by: Darren Hart <dvhart@linux.intel.com>
2016-01-19toshiba_acpi: Fix keyboard backlight sysfs entries not being updatedAzael Avalos1-4/+43
Certain Toshiba models with the second generation keyboard backlight (type 2) do not generate the keyboard backlight changed event (0x92), and thus, the sysfs entries are never being updated. This patch adds a workquee and a global boolean variable to address the issue. For those models that do generate the event, the sysfs entries are being updated via the *notify function and the boolean is set to true to avoid a second call to update the entries. For those models that do not generate the event, the workquee is used to update the sysfs entries and also to emulate the event via netlink, to make userspace aware of such change. Signed-off-by: Azael Avalos <coproscefalo@gmail.com> Signed-off-by: Darren Hart <dvhart@linux.intel.com>
2016-01-19Fix the MAINTAINERS record for the certs/ directoryDavid Howells1-1/+2
Fix the MAINTAINERS record for the certs/ directory to have the new keyrings mailing list and also to be authoritative for the sign-file tool Signed-off-by: David Howells <dhowells@redhat.com> Acked-by: David Woodhouse <David.Woodhouse@intel.com> Signed-off-by: James Morris <james.l.morris@oracle.com>
2016-01-18numa: remove stale node_has_online_mem() defineChris Metcalf2-7/+0
This isn't used anywhere, so delete it. Looks like the last usage (in x86-specific code) was removed by Tejun in 2011 in commit bd6709a91a59 ("x86, NUMA: Make 32bit use common NUMA init path"). Signed-off-by: Chris Metcalf <cmetcalf@ezchip.com>
2016-01-18arch/tile: move user_exit() to early kernel entry sequenceChris Metcalf7-41/+16
This ensures that we always notify context tracking that we have exited from user space no matter how we enter the kernel. It is similar to how arm64 handles context tracking, for example. This allows the removal of all the exception_enter() calls that were added in commit 49e4e15619cd ("tile: support CONTEXT_TRACKING and thus NOHZ_FULL"). Signed-off-by: Chris Metcalf <cmetcalf@ezchip.com>
2016-01-18tile: fix bug in setting PT_FLAGS_DISABLE_IRQ on kernel entryChris Metcalf1-1/+1
This flag value is saved in ptregs and used to decide whether to disable irqs when returning from the kernel. Commit 1168df528fe4 ("tile: don't assume user privilege is zero") performed a bad merge from some KVM-enabled code that had not yet been upstreamed. The only issue with the old code is that we will read the interrupt mask in more conditions than we need to (e.g., coming from user space when user space has the Interrupt Critical Section bit set, or coming from a guest kernel), which is a slow multi-cycle operation. This change saves those few cycles in the common case. Signed-off-by: Chris Metcalf <cmetcalf@ezchip.com>
2016-01-18tile: fix tilepro casts for readl, writel, etcChris Metcalf1-8/+8
Missing parentheses could cause an argument of the form "integer + pointer" to get cast to "(long)integer + pointer" and remain a pointer type, causing compiler warnings. Signed-off-by: Chris Metcalf <cmetcalf@ezchip.com>
2016-01-18tile: fix a -Wframe-larger-than warningChris Metcalf1-1/+1
The warning occurs in setup.c, where it is known that it can't be a problem, but it's still a good idea to silence the warning. The onstack array is converted from an s32 to a u8, which still is plenty of range for the values being managed there. Signed-off-by: Chris Metcalf <cmetcalf@ezchip.com>
2016-01-18tile: include the syscall number in the backtraceChris Metcalf1-9/+8
This information is easily available in the backtrace data and can be helpful when trying to figure out the backtrace, particularly if we're early in kernel entry or late in kernel exit. Signed-off-by: Chris Metcalf <cmetcalf@ezchip.com>
2016-01-18MAINTAINERS: add git URL for tileFengguang Wu1-0/+1
Signed-off-by: Fengguang Wu <fengguang.wu@intel.com> Signed-off-by: Chris Metcalf <cmetcalf@ezchip.com>
2016-01-18arch/tile: adopt prepare_exit_to_usermode() model from x86Chris Metcalf5-107/+77
This change is a prerequisite change for TASK_ISOLATION but also stands on its own for readability and maintainability. The existing tile do_work_pending() was called in a loop from assembly on the slow path; this change moves the loop into C code as well. For the x86 version see commit c5c46f59e4e7 ("x86/entry: Add new, comprehensible entry and exit handlers written in C"). This change exposes a pre-existing bug on the older tilepro platform; the singlestep processing is done last, but on tilepro (unlike tilegx) we enable interrupts while doing that processing, so we could in theory miss a signal or other asynchronous event. A future change could fix this by breaking the singlestep work into a "prepare" step done in the main loop, and a "trigger" step done after exiting the loop. Since this change is intended as purely a restructuring change, we call out the bug explicitly now, but don't yet fix it. Signed-off-by: Chris Metcalf <cmetcalf@ezchip.com>
2016-01-18drivers/ide: make ide-scan-pci.c driver explicitly non-modularPaul Gortmaker1-2/+1
The Kconfig for this support is currently: config IDEPCI_PCIBUS_ORDER bool "Probe IDE PCI devices in the PCI bus order (DEPRECATED)" ...meaning that it currently is not being built as a module by anyone. Lets change the initcall to be the equivalent device_initcall, so that when reading the driver code, there is no doubt it is builtin-only. Unlike other similar changes, we leave the module.h header to be included since this code interacts with other drivers and needs to know what a struct module is. Cc: "David S. Miller" <davem@davemloft.net> Cc: linux-ide@vger.kernel.org Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-01-18ide: constify ide_dma_ops structuresJulia Lawall2-2/+2
The ide_dma_ops structures are never modified, so declare these as const, as is already done for the others. Done with the help of Coccinelle. Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-01-18ide: silence some underflow warningsDan Carpenter1-8/+8
Back in the day we used to just say this code was root only so it was ok that the bounds checking was sloppy. These days it annoys static checkers so we fix it. In the original code "c > INT_MAX" was never true since "c" was an int. I am not sure what was intended so I left it alone. But because I made "c" unsigned it means we don't have a warning any more. The second warning is that we cap "i" but allow negatives leading to an underflow of the ide_disks_chs[] array. The third set of warnings is because these values come from the user and we cap most of the upper bounds but allow negative values. Negative cylinders doesn't make sense. drivers/ide/ide.c:262 ide_set_disk_chs() warn: impossible condition '(c > ((~0 >> 1))) => (s32min-s32max > s32max)' drivers/ide/ide.c:270 ide_set_disk_chs() warn: check 'ide_disks_chs[i]' for negative offsets 'i' = s32min. extra = 's32min-19' drivers/ide/ide.c:271 ide_set_disk_chs() warn: no lower bound on 'h' Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-01-18ovs: limit ovs recursions in ovs_execute_actions to not corrupt stackHannes Frederic Sowa1-5/+14
It was seen that defective configurations of openvswitch could overwrite the STACK_END_MAGIC and cause a hard crash of the kernel because of too many recursions within ovs. This problem arises due to the high stack usage of openvswitch. The rest of the kernel is fine with the current limit of 10 (RECURSION_LIMIT). We use the already existing recursion counter in ovs_execute_actions to implement an upper bound of 5 recursions. Cc: Pravin Shelar <pshelar@ovn.org> Cc: Simon Horman <simon.horman@netronome.com> Cc: Eric Dumazet <eric.dumazet@gmail.com> Cc: Simon Horman <simon.horman@netronome.com> Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-01-18team: Replace rcu_read_lock with a mutex in team_vlan_rx_kill_vidIdo Schimmel1-3/+3
We can't be within an RCU read-side critical section when deleting VLANs, as underlying drivers might sleep during the hardware operation. Therefore, replace the RCU critical section with a mutex. This is consistent with team_vlan_rx_add_vid. Fixes: 3d249d4ca7d0 ("net: introduce ethernet teaming device") Acked-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: Ido Schimmel <idosch@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-01-18net: hns: bug fix about hisilicon TSO BD modehuangdaode3-2/+19
The current upstreaming code fails to set the tso_mode register when initilizes, when processes large size packets, the default 4 bd is not enough, so this patch initilizes it and set the default value to 8 bds Signed-off-by: Daode Huang <huangdaode@hisilicon.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-01-18brcmfmac: fix BRCMF_FW_NVRAM_DEF macro for older gcc compilersArend van Spriel1-2/+1
With gcc < 4.3 __UNIQUE_ID does not create unique ids with the macro BRCMF_FW_NVRAM_DEF. Fix this by removing the MODULE_FIRMWARE instance for the nvram file. This file is not in linux-firmware repo so it may not be needed anyway. Otherwise consider this as a temporary fix. Reported-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Arend van Spriel <aspriel@gmail.com> Acked-by: Kalle Valo <kvalo@codeaurora.org> Tested-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-01-18dmaengine: rcar-dmac: Document SoC specific bindingsSimon Horman1-3/+10
In general Renesas hardware is not documented to the extent where the relationship between IP blocks on different SoCs can be assumed although they may appear to operate the same way. Furthermore the documentation typically does not specify a version for individual IP blocks. For these reasons a convention of using the SoC name in place of a version and providing SoC-specific compat strings has been adopted. Although not universally liked this convention is used in the bindings for most drivers for Renesas hardware. The purpose of this patch is to update the Renesas R-Car DMA Controller driver to follow this convention. Cc: devicetree@vger.kernel.org Cc: Magnus Damm <magnus.damm@gmail.com> Cc: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Signed-off-by: Simon Horman <horms+renesas@verge.net.au> Acked-by: Geert Uytterhoeven <geert+renesas@glider.be> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Vinod Koul <vinod.koul@intel.com>