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2017-10-02ahci: don't ignore result code of ahci_reset_controller()Ard Biesheuvel1-1/+4
ahci_pci_reset_controller() calls ahci_reset_controller(), which may fail, but ignores the result code and always returns success. This may result in failures like below ahci 0000:02:00.0: version 3.0 ahci 0000:02:00.0: enabling device (0000 -> 0003) ahci 0000:02:00.0: SSS flag set, parallel bus scan disabled ahci 0000:02:00.0: controller reset failed (0xffffffff) ahci 0000:02:00.0: failed to stop engine (-5) ... repeated many times ... ahci 0000:02:00.0: failed to stop engine (-5) Unable to handle kernel paging request at virtual address ffff0000093f9018 ... PC is at ahci_stop_engine+0x5c/0xd8 [libahci] LR is at ahci_deinit_port.constprop.12+0x1c/0xc0 [libahci] ... [<ffff000000a17014>] ahci_stop_engine+0x5c/0xd8 [libahci] [<ffff000000a196b4>] ahci_deinit_port.constprop.12+0x1c/0xc0 [libahci] [<ffff000000a197d8>] ahci_init_controller+0x80/0x168 [libahci] [<ffff000000a260f8>] ahci_pci_init_controller+0x60/0x68 [ahci] [<ffff000000a26f94>] ahci_init_one+0x75c/0xd88 [ahci] [<ffff000008430324>] local_pci_probe+0x3c/0xb8 [<ffff000008431728>] pci_device_probe+0x138/0x170 [<ffff000008585e54>] driver_probe_device+0x2dc/0x458 [<ffff0000085860e4>] __driver_attach+0x114/0x118 [<ffff000008583ca8>] bus_for_each_dev+0x60/0xa0 [<ffff000008585638>] driver_attach+0x20/0x28 [<ffff0000085850b0>] bus_add_driver+0x1f0/0x2a8 [<ffff000008586ae0>] driver_register+0x60/0xf8 [<ffff00000842f9b4>] __pci_register_driver+0x3c/0x48 [<ffff000000a3001c>] ahci_pci_driver_init+0x1c/0x1000 [ahci] [<ffff000008083918>] do_one_initcall+0x38/0x120 where an obvious hardware level failure results in an unnecessary 15 second delay and a subsequent crash. So record the result code of ahci_reset_controller() and relay it, rather than ignoring it. Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: Tejun Heo <tj@kernel.org>
2017-09-19ata_piix: Add Fujitsu-Siemens Lifebook S6120 to short cable IDsVille Syrjälä1-0/+1
Fujitsu-Siemens Lifebook S6120 misdetects the cable type for some drives. The problematic one in this case is an mSATA SSD hooked up via a mSATA->PATA bridge. With regular hard disks the detection seems to work correctly. Strangely an older Lifebook model (S6020) detects the cable as 80c with the mSATA SSD, even if using the exact same flex cable. Cc: Tejun Heo <tj@kernel.org> Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by: Tejun Heo <tj@kernel.org>
2017-09-07ata: avoid gcc-7 warning in ata_timing_quantizeArnd Bergmann1-10/+10
gcc-7 warns about the result of a constant multiplication used as a boolean: drivers/ata/libata-core.c: In function 'ata_timing_quantize': drivers/ata/libata-core.c:3164:30: warning: '*' in boolean context, suggest '&&' instead [-Wint-in-bool-context] This slightly rearranges the macro to simplify the code and avoid the warning at the same time. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Tejun Heo <tj@kernel.org>
2017-09-07Merge branch 'for-4.14' of ↵Linus Torvalds12-43/+293
git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata Pull libata updates from Tejun Heo: "Except for the ahci fix that fixes a boot issue, nothing major in this pull request. Some new platform controller support and device specific changes" * 'for-4.14' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata: libata: zpodd: make arrays cdb static, reduces object code size ahci: don't use MSI for devices with the silly Intel NVMe remapping scheme dt-bindings: ata: add DT bindings for MediaTek SATA controller ata: mediatek: add support for MediaTek SATA controller pata_octeon_cf: use of_property_read_{bool|u32}() cs5536: add support for IDE controller variant ata: sata_gemini: Introduce explicit IDE pin control ata: sata_gemini: Retire custom pin control ata: ahci_platform: Add shutdown handler ata: sata_gemini: explicitly request exclusive reset control ata: Drop unnecessary static ata: Convert to using %pOF instead of full_name
2017-09-06libata: zpodd: make arrays cdb static, reduces object code sizeColin Ian King1-2/+2
Don't populate the arrays cdb on the stack, instead make them static. Makes the object code smaller by 230 bytes: Before: text data bss dec hex filename 3797 240 0 4037 fc5 drivers/ata/libata-zpodd.o After: text data bss dec hex filename 3407 400 0 3807 edf drivers/ata/libata-zpodd.o Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Tejun Heo <tj@kernel.org>
2017-09-06ahci: don't use MSI for devices with the silly Intel NVMe remapping schemeChristoph Hellwig1-1/+8
Intel AHCI controllers that also hide NVMe devices in their bar can't use MSI interrupts, so disable them. Reported-by: John Loy <john.robert.loy@gmail.com> Tested-by: John Loy <john.robert.loy@gmail.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Fixes: d684a90d38e2 ("ahci: per-port msix support") Cc: stable@vger.kernel.org # v4.5+ Signed-off-by: Tejun Heo <tj@kernel.org>
2017-09-04Merge branch 'core-rcu-for-linus' of ↵Linus Torvalds1-5/+3
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull RCU updates from Ingo Molnad: "The main RCU related changes in this cycle were: - Removal of spin_unlock_wait() - SRCU updates - RCU torture-test updates - RCU Documentation updates - Extend the sys_membarrier() ABI with the MEMBARRIER_CMD_PRIVATE_EXPEDITED variant - Miscellaneous RCU fixes - CPU-hotplug fixes" * 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (63 commits) arch: Remove spin_unlock_wait() arch-specific definitions locking: Remove spin_unlock_wait() generic definitions drivers/ata: Replace spin_unlock_wait() with lock/unlock pair ipc: Replace spin_unlock_wait() with lock/unlock pair exit: Replace spin_unlock_wait() with lock/unlock pair completion: Replace spin_unlock_wait() with lock/unlock pair doc: Set down RCU's scheduling-clock-interrupt needs doc: No longer allowed to use rcu_dereference on non-pointers doc: Add RCU files to docbook-generation files doc: Update memory-barriers.txt for read-to-write dependencies doc: Update RCU documentation membarrier: Provide expedited private command rcu: Remove exports from rcu_idle_exit() and rcu_idle_enter() rcu: Add warning to rcu_idle_enter() for irqs enabled rcu: Make rcu_idle_enter() rely on callers disabling irqs rcu: Add assertions verifying blocked-tasks list rcu/tracing: Set disable_rcu_irq_enter on rcu_eqs_exit() rcu: Add TPS() protection for _rcu_barrier_trace strings rcu: Use idle versions of swait to make idle-hack clear swait: Add idle variants which don't contribute to load average ...
2017-08-29Revert "libata: quirk read log on no-name M.2 SSD"Tejun Heo1-4/+0
This reverts commit 35f0b6a779b8b7a98faefd7c1c660b4dac9a5c26. We now conditionalize issuing of READ LOG PAGE on the TRUSTED COMPUTING SUPPORTED bit in the identity data and this shouldn't be necessary. Signed-off-by: Tejun Heo <tj@kernel.org>
2017-08-29libata: check for trusted computing in IDENTIFY DEVICE dataChristoph Hellwig1-0/+3
ATA-8 and later mirrors the TRUSTED COMPUTING SUPPORTED bit in word 48 of the IDENTIFY DEVICE data. Check this before issuing a READ LOG PAGE command to avoid issues with buggy devices. The only downside is that we can't support Security Send / Receive for a device with an older revision due to the conflicting use of this field in earlier specifications. tj: The reason we need this is because some devices which don't support READ LOG PAGE lock up after getting issued that command. Signed-off-by: Christoph Hellwig <hch@lst.de> Tested-by: David Ahern <dsahern@gmail.com> Signed-off-by: Tejun Heo <tj@kernel.org>
2017-08-28ata: mediatek: add support for MediaTek SATA controllerRyder Lee3-0/+207
This adds support the AHCI-compliant Serial ATA controller present on MediaTek SoCs. Signed-off-by: Ryder Lee <ryder.lee@mediatek.com> Acked-by: Tejun Heo <tj@kernel.org> Signed-off-by: Tejun Heo <tj@kernel.org>
2017-08-28pata_octeon_cf: use of_property_read_{bool|u32}()Sergei Shtylyov1-6/+4
The Octeon CF driver basically open-codes of_property_read_{bool|u32}() using of_{find|get}_property() calls in its probe() method. Using the modern DT APIs saves 2 LoCs and 16 bytes of object code (MIPS gcc 3.4.3). Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com> Signed-off-by: Tejun Heo <tj@kernel.org>
2017-08-28libata: quirk read log on no-name M.2 SSDChristoph Hellwig1-0/+4
Ido reported that reading the log page on his systems fails, so quirk it as it won't support ZBC or security protocols. Signed-off-by: Christoph Hellwig <hch@lst.de> Reported-by: Ido Schimmel <idosch@mellanox.com> Tested-by: Ido Schimmel <idosch@mellanox.com> Signed-off-by: Tejun Heo <tj@kernel.org>
2017-08-21Merge branch 'for-mingo' of ↵Ingo Molnar1-5/+3
git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu into core/rcu Pull RCU updates from Paul E. McKenney: - Removal of spin_unlock_wait() - SRCU updates - Torture-test updates - Documentation updates - Miscellaneous fixes - CPU-hotplug fixes - Miscellaneous non-RCU fixes Signed-off-by: Ingo Molnar <mingo@kernel.org>
2017-08-17drivers/ata: Replace spin_unlock_wait() with lock/unlock pairPaul E. McKenney1-5/+3
There is no agreed-upon definition of spin_unlock_wait()'s semantics, and it appears that all callers could do just as well with a lock/unlock pair. This commit therefore eliminates the spin_unlock_wait() call and associated else-clause and hoists the then-clause's lock and unlock out of the "if" statement. This should be safe from a performance perspective because according to Tejun there should be few if any drivers that don't set their own error handler. Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Acked-by: Tejun Heo <tj@kernel.org> Cc: <linux-ide@vger.kernel.org> Cc: Will Deacon <will.deacon@arm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Alan Stern <stern@rowland.harvard.edu> Cc: Andrea Parri <parri.andrea@gmail.com> Cc: Linus Torvalds <torvalds@linux-foundation.org>
2017-08-16sata: ahci-da850: Fix some error handling paths in 'ahci_da850_probe()'Christophe JAILLET1-2/+6
'rc' is known to be 0 at this point. If 'platform_get_resource()' or 'devm_ioremap()' fail, return -ENOMEM instead of 0 which means success. tj: Changed error code from -ENOMEM to -ENODEV for get_resource failure as suggested by Sergei. Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr> Signed-off-by: Tejun Heo <tj@kernel.org> Cc: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
2017-08-11cs5536: add support for IDE controller variantAndrey Korolyov2-0/+2
Several legacy devices such as Geode-based Cisco ASA appliances and DB800 development board do possess CS5536 IDE controller with different PCI id than existing one. Using pata_generic is not always feasible as at least DB800 requires MSR quirk from pata_cs5536 to be used with vendor firmware. Signed-off-by: Andrey Korolyov <andrey@xdel.ru> CC: stable@vger.kernel.org Signed-off-by: Tejun Heo <tj@kernel.org>
2017-08-11ata: sata_gemini: Introduce explicit IDE pin controlLinus Walleij1-0/+35
The IDE pins are managed by the pin controller, if we want to use these, we need to ask the pin controller to explicitly enable them as by default, these pins are used for other business and most users just rely on the SATA bridge. Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Tejun Heo <tj@kernel.org>
2017-08-11ata: sata_gemini: Retire custom pin controlLinus Walleij1-34/+0
I added a proper pin control driver for the Gemini SoC, so retire this custom code and rely on the pin controller to set up the pads. The "IOMUX" which is routing signals between the ATA and SATA bridge inside of the chip is not about pin control and remains in place. Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Tejun Heo <tj@kernel.org>
2017-08-04ata: ahci_platform: Add shutdown handlerNate Watterson2-0/+35
The newly introduced ahci_platform_shutdown() method is called during system shutdown to disable host controller DMA and interrupts in order to avoid potentially corrupting or otherwise interfering with a new kernel being started with kexec. Signed-off-by: Nate Watterson <nwatters@codeaurora.org> Signed-off-by: Tejun Heo <tj@kernel.org>
2017-08-02ata: sata_gemini: explicitly request exclusive reset controlPhilipp Zabel1-2/+2
Commit a53e35db70d1 ("reset: Ensure drivers are explicit when requesting reset lines") started to transition the reset control request API calls to explicitly state whether the driver needs exclusive or shared reset control behavior. Convert all drivers requesting exclusive resets to the explicit API call so the temporary transition helpers can be removed. No functional changes. Cc: linux-ide@vger.kernel.org Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de> Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Tejun Heo <tj@kernel.org>
2017-08-02ata: Drop unnecessary staticJulia Lawall1-1/+1
Drop static on a local variable, when the variable is initialized before any possible use. Thus, the static has no benefit. The semantic patch that fixes this problem is as follows: (http://coccinelle.lip6.fr/) // <smpl> @bad exists@ position p; identifier x; type T; @@ static T x@p; ... x = <+...x...+> @@ identifier x; expression e; type T; position p != bad.p; @@ -static T x@p; ... when != x when strict ?x = e; // </smpl> Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Tejun Heo <tj@kernel.org>
2017-07-31libata: fix a couple of doc build warningsJonathan Corbet1-2/+2
The kerneldoc comments for a couple of functions in drivers/ata/libata-eh.c had fallen behind the current implementation, resulting in these doc build warnings: ./drivers/ata/libata-eh.c:1449: warning: No description found for parameter 'link' ./drivers/ata/libata-eh.c:1449: warning: Excess function parameter 'ap' description in 'ata_eh_done' ./drivers/ata/libata-eh.c:1590: warning: No description found for parameter 'qc' ./drivers/ata/libata-eh.c:1590: warning: Excess function parameter 'dev' description in 'ata_eh_request_sense' Update the comments and make the warnings go away. Signed-off-by: Jonathan Corbet <corbet@lwn.net> Signed-off-by: Tejun Heo <tj@kernel.org>
2017-07-19libata: array underflow in ata_find_dev()Dan Carpenter1-2/+4
My static checker complains that "devno" can be negative, meaning that we read before the start of the loop. I've looked at the code, and I think the warning is right. This come from /proc so it's root only or it would be quite a quite a serious bug. The call tree looks like this: proc_scsi_write() <- gets id and channel from simple_strtoul() -> scsi_add_single_device() <- calls shost->transportt->user_scan() -> ata_scsi_user_scan() -> ata_find_dev() Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Tejun Heo <tj@kernel.org> Cc: stable@vger.kernel.org # all versions at this point
2017-07-19ata: Convert to using %pOF instead of full_nameRob Herring1-1/+1
Now that we have a custom printf format specifier, convert users of full_name to use %pOF instead. This is preparation to remove storing of the full path string for each node. Signed-off-by: Rob Herring <robh@kernel.org> Cc: Tejun Heo <tj@kernel.org> Cc: linux-ide@vger.kernel.org Signed-off-by: Tejun Heo <tj@kernel.org>
2017-07-15ata: sata_rcar: add gen[23] fallback compatibility stringsSimon Horman1-0/+8
Add fallback compatibility string for R-Car Gen 2 and 3. In the case of Renesas R-Car hardware we know that there are generations of SoCs, e.g. Gen 1 and 2. But beyond that its not clear what the relationship between IP blocks might be. For example, I believe that r8a7790 is older than r8a7791 but that doesn't imply that the latter is a descendant of the former or vice versa. We can, however, by examining the documentation and behaviour of the hardware at run-time observe that the current driver implementation appears to be compatible with the IP blocks on SoCs within a given generation. For the above reasons and convenience when enabling new SoCs a per-generation fallback compatibility string scheme being adopted for drivers for Renesas SoCs. Signed-off-by: Simon Horman <horms+renesas@verge.net.au> Acked-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Tejun Heo <tj@kernel.org>
2017-07-15libata: remove unused rc in ata_eh_handle_port_resumeKefeng Wang1-2/+1
Remove unused variable ‘rc’. Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com> Signed-off-by: Tejun Heo <tj@kernel.org>
2017-07-10libata: Cleanup ata_read_log_page()Damien Le Moal1-3/+3
The warning message "READ LOG DMA EXT failed, trying unqueued" in ata_read_log_page() as well as the macro name ATA_HORKAGE_NO_NCQ_LOG are confusing: the command READ LOG DMA EXT is not an queued NCQ command unless it is encapsulated in a RECEIVE FPDMA QUEUED command. From ACS-4 READ LOG DMA EXT description: "The device processes the READ LOG DMA EXT command in the NCQ feature set environment (see 4.13.6) if the READ LOG DMA EXT command is encapsulated in a RECEIVE FPDMA QUEUED command (see 7.30) with the inputs encapsulated as shown in 7.23.6." To avoid confusion, fix the warning messsage to mention switching to PIO and not "unqueued" and rename the macro ATA_HORKAGE_NO_NCQ_LOG to ATA_HORKAGE_NO_DMA_LOG. Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Tejun Heo <tj@kernel.org>
2017-07-10ata: fix gemini Kconfig dependenciesArnd Bergmann1-2/+2
We cannot build the new ftide010 code without also building the faraday sata bridge driver: drivers/ata/pata_ftide010.o: In function `pata_ftide010_probe': pata_ftide010.c:(.text+0x2b8): undefined reference to `gemini_sata_bridge_get' pata_ftide010.c:(.text+0x32c): undefined reference to `gemini_sata_get_muxmode' pata_ftide010.c:(.text+0x358): undefined reference to `gemini_sata_bridge_enabled' drivers/ata/pata_ftide010.o: In function `pata_ftide010_gemini_port_stop': pata_ftide010.c:(.text+0x520): undefined reference to `gemini_sata_stop_bridge' drivers/ata/pata_ftide010.o: In function `pata_ftide010_gemini_port_start': pata_ftide010.c:(.text+0x5bc): undefined reference to `gemini_sata_start_bridge' This adjusts the Kconfig dependencies accordingly. Fixes: be4e456ed3a5 ("ata: Add driver for Faraday Technology FTIDE010") Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Tejun Heo <tj@kernel.org>
2017-07-06Merge branch 'for-4.13' of ↵Linus Torvalds27-232/+1422
git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata Pull libata updates from Tejun Heo: - Christoph added support for TCG OPAL self encrypting disks - Minwoo added support for ATA PASS-THROUGH(32) - Linus Walleij removed spurious drvdata assignments in some drivers - Support for a few new device and other fixes * 'for-4.13' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata: (33 commits) sd: add support for TCG OPAL self encrypting disks libata: fix build warning from unused goto label libata: Support for an ATA PASS-THROUGH(32) command. ahci: Add Device ID for ASMedia 1061R and 1062R sata_via: Enable optional hotplug on VT6420 ata: ahci_brcm: Avoid writing to read-only registers libata: Add the AHCI_HFLAG_NO_WRITE_TO_RO flag libata: Add the AHCI_HFLAG_YES_ALPM flag ata: ftide010: fix resource printing libata: make the function name in comment match the actual function ata: sata_rcar: make of_device_ids const. ata: pata_octeon_cf: make of_device_ids const. libata: Convert bare printks to pr_cont libahci: wrong comments in ahci_do_softreset() ata: declare ata_port_info structures as const ata: Add driver for Faraday Technology FTIDE010 ata: Add DT bindings for the Gemini SATA bridge ata: Add DT bindings for Faraday Technology FTIDE010 libata: implement SECURITY PROTOCOL IN/OUT libata: factor out a ata_identify_page_supported helper ...
2017-07-04Merge tag 'pm-4.13-rc1' of ↵Linus Torvalds1-6/+3
git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm Pull power management updates from Rafael Wysocki: "The big ticket items here are the rework of suspend-to-idle in order to add proper support for power button wakeup from it on recent Dell laptops and the rework of interfaces exporting the current CPU frequency on x86. In addition to that, support for a few new pieces of hardware is added, the PCI/ACPI device wakeup infrastructure is simplified significantly and the wakeup IRQ framework is fixed to unbreak the IRQ bus locking infrastructure. Also, there are some functional improvements for intel_pstate, tools updates and small fixes and cleanups all over. Specifics: - Rework suspend-to-idle to allow it to take wakeup events signaled by the EC into account on ACPI-based platforms in order to properly support power button wakeup from suspend-to-idle on recent Dell laptops (Rafael Wysocki). That includes the core suspend-to-idle code rework, support for the Low Power S0 _DSM interface, and support for the ACPI INT0002 Virtual GPIO device from Hans de Goede (required for USB keyboard wakeup from suspend-to-idle to work on some machines). - Stop trying to export the current CPU frequency via /proc/cpuinfo on x86 as that is inaccurate and confusing (Len Brown). - Rework the way in which the current CPU frequency is exported by the kernel (over the cpufreq sysfs interface) on x86 systems with the APERF and MPERF registers by always using values read from these registers, when available, to compute the current frequency regardless of which cpufreq driver is in use (Len Brown). - Rework the PCI/ACPI device wakeup infrastructure to remove the questionable and artificial distinction between "devices that can wake up the system from sleep states" and "devices that can generate wakeup signals in the working state" from it, which allows the code to be simplified quite a bit (Rafael Wysocki). - Fix the wakeup IRQ framework by making it use SRCU instead of RCU which doesn't allow sleeping in the read-side critical sections, but which in turn is expected to be allowed by the IRQ bus locking infrastructure (Thomas Gleixner). - Modify some computations in the intel_pstate driver to avoid rounding errors resulting from them (Srinivas Pandruvada). - Reduce the overhead of the intel_pstate driver in the HWP (hardware-managed P-states) mode and when the "performance" P-state selection algorithm is in use by making it avoid registering scheduler callbacks in those cases (Len Brown). - Rework the energy_performance_preference sysfs knob in intel_pstate by changing the values that correspond to different symbolic hint names used by it (Len Brown). - Make it possible to use more than one cpuidle driver at the same time on ARM (Daniel Lezcano). - Make it possible to prevent the cpuidle menu governor from using the 0 state by disabling it via sysfs (Nicholas Piggin). - Add support for FFH (Fixed Functional Hardware) MWAIT in ACPI C1 on AMD systems (Yazen Ghannam). - Make the CPPC cpufreq driver take the lowest nonlinear performance information into account (Prashanth Prakash). - Add support for hi3660 to the cpufreq-dt driver, fix the imx6q driver and clean up the sfi, exynos5440 and intel_pstate drivers (Colin Ian King, Krzysztof Kozlowski, Octavian Purdila, Rafael Wysocki, Tao Wang). - Fix a few minor issues in the generic power domains (genpd) framework and clean it up somewhat (Krzysztof Kozlowski, Mikko Perttunen, Viresh Kumar). - Fix a couple of minor issues in the operating performance points (OPP) framework and clean it up somewhat (Viresh Kumar). - Fix a CONFIG dependency in the hibernation core and clean it up slightly (Balbir Singh, Arvind Yadav, BaoJun Luo). - Add rk3228 support to the rockchip-io adaptive voltage scaling (AVS) driver (David Wu). - Fix an incorrect bit shift operation in the RAPL power capping driver (Adam Lessnau). - Add support for the EPP field in the HWP (hardware managed P-states) control register, HWP.EPP, to the x86_energy_perf_policy tool and update msr-index.h with HWP.EPP values (Len Brown). - Fix some minor issues in the turbostat tool (Len Brown). - Add support for AMD family 0x17 CPUs to the cpupower tool and fix a minor issue in it (Sherry Hurwitz). - Assorted cleanups, mostly related to the constification of some data structures (Arvind Yadav, Joe Perches, Kees Cook, Krzysztof Kozlowski)" * tag 'pm-4.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (69 commits) cpufreq: Update scaling_cur_freq documentation cpufreq: intel_pstate: Clean up after performance governor changes PM: hibernate: constify attribute_group structures. cpuidle: menu: allow state 0 to be disabled intel_idle: Use more common logging style PM / Domains: Fix missing default_power_down_ok comment PM / Domains: Fix unsafe iteration over modified list of domains PM / Domains: Fix unsafe iteration over modified list of domain providers PM / Domains: Fix unsafe iteration over modified list of device links PM / Domains: Handle safely genpd_syscore_switch() call on non-genpd device PM / Domains: Call driver's noirq callbacks PM / core: Drop run_wake flag from struct dev_pm_info PCI / PM: Simplify device wakeup settings code PCI / PM: Drop pme_interrupt flag from struct pci_dev ACPI / PM: Consolidate device wakeup settings code ACPI / PM: Drop run_wake from struct acpi_device_wakeup_flags PM / QoS: constify *_attribute_group. PM / AVS: rockchip-io: add io selectors and supplies for rk3228 powercap/RAPL: prevent overridding bits outside of the mask PM / sysfs: Constify attribute groups ...
2017-07-04Merge tag 'docs-4.13' of git://git.lwn.net/linuxLinus Torvalds23-26/+27
Pull documentation updates from Jonathan Corbet: "There has been a fair amount of activity in the docs tree this time around. Highlights include: - Conversion of a bunch of security documentation into RST - The conversion of the remaining DocBook templates by The Amazing Mauro Machine. We can now drop the entire DocBook build chain. - The usual collection of fixes and minor updates" * tag 'docs-4.13' of git://git.lwn.net/linux: (90 commits) scripts/kernel-doc: handle DECLARE_HASHTABLE Documentation: atomic_ops.txt is core-api/atomic_ops.rst Docs: clean up some DocBook loose ends Make the main documentation title less Geocities Docs: Use kernel-figure in vidioc-g-selection.rst Docs: fix table problems in ras.rst Docs: Fix breakage with Sphinx 1.5 and upper Docs: Include the Latex "ifthen" package doc/kokr/howto: Only send regression fixes after -rc1 docs-rst: fix broken links to dynamic-debug-howto in kernel-parameters doc: Document suitability of IBM Verse for kernel development Doc: fix a markup error in coding-style.rst docs: driver-api: i2c: remove some outdated information Documentation: DMA API: fix a typo in a function name Docs: Insert missing space to separate link from text doc/ko_KR/memory-barriers: Update control-dependencies example Documentation, kbuild: fix typo "minimun" -> "minimum" docs: Fix some formatting issues in request-key.rst doc: ReSTify keys-trusted-encrypted.txt doc: ReSTify keys-request-key.txt ...
2017-06-29sd: add support for TCG OPAL self encrypting disksChristoph Hellwig1-0/+3
Just wire up the generic TCG OPAL infrastructure to the SCSI disk driver and the Security In/Out commands. Note that I don't know of any actual SCSI disks that do support TCG OPAL, but this is required to support ATA disks through libata. Signed-off-by: Christoph Hellwig <hch@lst.de> Acked-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Tejun Heo <tj@kernel.org>
2017-06-29libata: fix build warning from unused goto labelTejun Heo1-1/+0
b1ffbf854e08 ("libata: Support for an ATA PASS-THROUGH(32) command.") introduced an unused goto label. Remove it. Reported-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Tejun Heo <tj@kernel.org>
2017-06-28ACPI / PM: Consolidate device wakeup settings codeRafael J. Wysocki1-6/+3
Currently, there are two separate ways of handling device wakeup settings in the ACPI core, depending on whether this is runtime wakeup or system wakeup (from sleep states). However, after the previous commit eliminating the run_wake ACPI device wakeup flag, there is no difference between the two any more at the ACPI level, so they can be combined. For this reason, introduce acpi_pm_set_device_wakeup() to replace both acpi_pm_device_run_wake() and acpi_pm_device_sleep_wake() and make it check the ACPI device object's wakeup.valid flag to determine whether or not the device can be set up to generate wakeup signals. Also notice that zpodd_enable/disable_run_wake() only call device_set_run_wake() because acpi_pm_device_run_wake() called device_run_wake(), which is not done by acpi_pm_set_device_wakeup(), so drop the now redundant device_set_run_wake() calls from there. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com> Acked-by: Bjorn Helgaas <bhelgaas@google.com>
2017-06-27libata: Support for an ATA PASS-THROUGH(32) command.Minwoo Im2-6/+68
SAT-4(SCSI/ATA Translation) supports for an ata pass-thru(32). This patch will allow to translate an ata pass-thru(32) SCSI cmd to an ATA cmd. Signed-off-by: Minwoo Im <dn3108@gmail.com> Reviewed-by: Bart Van Assche <bart.vanassche@wdc.com> Signed-off-by: Tejun Heo <tj@kernel.org>
2017-06-27ahci: Add Device ID for ASMedia 1061R and 1062RShawn Lin1-0/+2
Adding ASMedia 1061R and 1062R platform device IDs for SATA. Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com> Signed-off-by: Tejun Heo <tj@kernel.org>
2017-06-26sata_via: Enable optional hotplug on VT6420Ondrej Zary1-4/+13
VT6420 seems to have the same hotplug capability as VT6421. However, enabling hotplug needs to expose SCR registers which can cause problems. It works for me but might break elsewhere. So add a module parameter vt6420_hotplug to enable this feature. Signed-off-by: Ondrej Zary <linux@rainbow-software.org> Signed-off-by: Tejun Heo <tj@kernel.org>
2017-06-22ata: ahci_brcm: Avoid writing to read-only registersDoug Berger1-8/+4
This commit makes use of the AHCI_HFLAG_YES_ALPM flag to prevent the driver from writing to the read-only Host Capability register. It also sets the AHCI_HFLAG_NO_WRITE_TO_RO flag to prevent the AHCI library from writing to read-only registers. Signed-off-by: Doug Berger <opendmb@gmail.com> Signed-off-by: Tejun Heo <tj@kernel.org>
2017-06-22libata: Add the AHCI_HFLAG_NO_WRITE_TO_RO flagDoug Berger2-1/+4
While most hardware will simply ignore a write to a read-only register, some hardware will signal an abort if this occurs. This commit introduces the flag AHCI_HFLAG_NO_WRITE_TO_RO to prevent the AHCI library from attempting to write to the HOST_CAP, HOST_CAP2, and HOST_PORTS_IMPL registers which may be read-only. Signed-off-by: Doug Berger <opendmb@gmail.com> Signed-off-by: Tejun Heo <tj@kernel.org>
2017-06-22libata: Add the AHCI_HFLAG_YES_ALPM flagDoug Berger2-0/+6
Some hardware is capable of supporting Aggresive Link Power Management even though it is not indicated by the Host Capability register. This commit adds the AHCI_HFLAG_YES_ALPM flag to the AHCI library to allow indication of this quirk when the Host Capability register is Read Only and therefore cannot be changed. Signed-off-by: Doug Berger <opendmb@gmail.com> Signed-off-by: Tejun Heo <tj@kernel.org>
2017-06-22ata: ftide010: fix resource printingArnd Bergmann1-2/+2
The new driver uses an incorrect format string for resource_size_t: drivers/ata/pata_ftide010.c: In function 'pata_ftide010_probe': drivers/ata/pata_ftide010.c:520:17: warning: format '%x' expects argument of type 'unsigned int', but argument 5 has type 'resource_size_t {aka long long unsigned int}' [-Wformat=] The nicest way to print the address is to pretty-print the resource using %pR. Fixes: be4e456ed3a5 ("ata: Add driver for Faraday Technology FTIDE010") Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Tejun Heo <tj@kernel.org>
2017-06-20libata: make the function name in comment match the actual functionMinwoo Im1-1/+1
The function name used to be ata_scsiop_mode_select() but renamed to ata_scsi_mode_select_xlat(). Update the comment accordingly. tj: Minor commit desc update. Signed-off-by: Minwoo Im <dn3108@gmail.com> Signed-off-by: Tejun Heo <tj@kernel.org>
2017-06-19ata: sata_rcar: make of_device_ids const.Arvind Yadav1-1/+1
of_device_ids are not supposed to change at runtime. All functions working with of_device_ids provided by <linux/of.h> work with const of_device_ids. So mark the non-const structs as const. File size before: text data bss dec hex filename 3946 2296 0 6242 1862 drivers/ata/sata_rcar.o File size after constify sata_rcar_match. text data bss dec hex filename 5554 696 0 6250 186a drivers/ata/sata_rcar.o Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com> Signed-off-by: Tejun Heo <tj@kernel.org>
2017-06-19ata: pata_octeon_cf: make of_device_ids const.Arvind Yadav1-1/+1
of_device_ids are not supposed to change at runtime. All functions working with of_device_ids provided by <linux/of.h> work with const of_device_ids. So mark the non-const structs as const. File size before: text data bss dec hex filename 465 696 4 1165 48d drivers/ata/pata_octeon_cf.o File size after constify octeon_cf_match. text data bss dec hex filename 865 280 4 1149 47d drivers/ata/pata_octeon_cf.o Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com> Signed-off-by: Tejun Heo <tj@kernel.org>
2017-06-12libata: Convert bare printks to pr_contJoe Perches1-21/+20
Linus Torvalds changed the behavior of printks without KERN_<LEVEL>. Convert the continuation prints to use pr_cont. At the same time, convert the existing printks with KERN_<LEVEL> to pr_<level> Miscellanea: o Coalesce a multiline format Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Tejun Heo <tj@kernel.org>
2017-06-12libahci: wrong comments in ahci_do_softreset()Minwoo Im1-2/+2
AHCI 1.3.1 Spec says that software shall build two H2D register FISes in the command list to send a software reset. The comments in ahci_do_softreset() is currently D2H instead of H2D. Signed-off-by: Minwoo Im <dn3108@gmail.com> Signed-off-by: Tejun Heo <tj@kernel.org>
2017-06-12ata: declare ata_port_info structures as constBhumika Goyal4-6/+6
ata_port_info structures are either copied to other objects or their references are stored in objects of type const. So, ata_port_info structures having similar usage pattern can be made const. Signed-off-by: Bhumika Goyal <bhumirks@gmail.com> Signed-off-by: Tejun Heo <tj@kernel.org>
2017-06-12ata: Add driver for Faraday Technology FTIDE010Linus Walleij5-0/+1049
This adds a driver for the Faraday Technology FTIDE010 PATA IP block. When used with the Storlink/Storm/Cortina Systems Gemini SoC, the PATA interface is accompanied by a PATA<->SATA bridge, so while the device appear as a PATA controller, it attaches physically to SATA disks, and also has a designated memory area with registers to set up the bridge. The Gemini SATA bridge is separated into its own driver file to make things modular and make it possible to reuse the PATA driver as stand-alone on other systems than the Gemini. dmesg excerpt from the D-Link DIR-685 storage router: gemini-sata-bridge 46000000.sata: SATA ID 00000e00, PHY ID: 01000100 gemini-sata-bridge 46000000.sata: set up the Gemini IDE/SATA nexus ftide010 63000000.ata: set up Gemini PATA0 ftide010 63000000.ata: device ID 00000500, irq 26, io base 0x63000000 ftide010 63000000.ata: SATA0 (master) start gemini-sata-bridge 46000000.sata: SATA0 PHY ready scsi host0: pata-ftide010 ata1: PATA max UDMA/133 irq 26 ata1.00: ATA-8: INTEL SSDSA2CW120G3, 4PC10302, max UDMA/133 ata1.00: 234441648 sectors, multi 1: LBA48 NCQ (depth 0/32) ata1.00: configured for UDMA/133 scsi 0:0:0:0: Direct-Access ATA INTEL SSDSA2CW12 0302 PQ: 0 ANSI: 5 ata1.00: Enabling discard_zeroes_data sd 0:0:0:0: [sda] 234441648 512-byte logical blocks: (120 GB/112 GiB) sd 0:0:0:0: [sda] Write Protect is off sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA ata1.00: Enabling discard_zeroes_data ata1.00: Enabling discard_zeroes_data sd 0:0:0:0: [sda] Attached SCSI disk After this I can flawlessly mount and read/write copy etc files from /dev/sda[n]. Cc: John Feng-Hsin Chiang <john453@faraday-tech.com> Cc: Greentime Hu <green.hu@gmail.com> Acked-by: Hans Ulli Kroll <ulli.kroll@googlemail.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Acked-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Signed-off-by: Tejun Heo <tj@kernel.org>
2017-06-05libata: implement SECURITY PROTOCOL IN/OUTChristoph Hellwig2-0/+108
This allows us to use the generic OPAL code with ATA devices. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Tejun Heo <tj@kernel.org>
2017-06-05libata: factor out a ata_identify_page_supported helperChristoph Hellwig1-27/+32
tj: Updated line continuation style for consistency as pointed out by Sergei. Signed-off-by: Christoph Hellwig <hch@lst.de> Cc: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com> Signed-off-by: Tejun Heo <tj@kernel.org>
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