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* Revert "libata: quirk read log on no-name M.2 SSD"Tejun Heo2017-08-291-4/+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>
* libata: check for trusted computing in IDENTIFY DEVICE dataChristoph Hellwig2017-08-291-0/+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>
* libata: quirk read log on no-name M.2 SSDChristoph Hellwig2017-08-281-0/+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>
* sata: ahci-da850: Fix some error handling paths in 'ahci_da850_probe()'Christophe JAILLET2017-08-161-2/+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>
* libata: fix a couple of doc build warningsJonathan Corbet2017-07-311-2/+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>
* libata: array underflow in ata_find_dev()Dan Carpenter2017-07-191-2/+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
* ata: sata_rcar: add gen[23] fallback compatibility stringsSimon Horman2017-07-151-0/+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>
* libata: remove unused rc in ata_eh_handle_port_resumeKefeng Wang2017-07-151-2/+1
| | | | | | | Remove unused variable ‘rc’. Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com> Signed-off-by: Tejun Heo <tj@kernel.org>
* libata: Cleanup ata_read_log_page()Damien Le Moal2017-07-101-3/+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>
* ata: fix gemini Kconfig dependenciesArnd Bergmann2017-07-101-2/+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>
* Merge branch 'for-4.13' of ↵Linus Torvalds2017-07-0627-232/+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 ...
| * sd: add support for TCG OPAL self encrypting disksChristoph Hellwig2017-06-291-0/+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>
| * libata: fix build warning from unused goto labelTejun Heo2017-06-291-1/+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>
| * libata: Support for an ATA PASS-THROUGH(32) command.Minwoo Im2017-06-272-6/+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>
| * ahci: Add Device ID for ASMedia 1061R and 1062RShawn Lin2017-06-271-0/+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>
| * sata_via: Enable optional hotplug on VT6420Ondrej Zary2017-06-261-4/+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>
| * ata: ahci_brcm: Avoid writing to read-only registersDoug Berger2017-06-221-8/+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>
| * libata: Add the AHCI_HFLAG_NO_WRITE_TO_RO flagDoug Berger2017-06-222-1/+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>
| * libata: Add the AHCI_HFLAG_YES_ALPM flagDoug Berger2017-06-222-0/+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>
| * ata: ftide010: fix resource printingArnd Bergmann2017-06-221-2/+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>
| * libata: make the function name in comment match the actual functionMinwoo Im2017-06-201-1/+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>
| * ata: sata_rcar: make of_device_ids const.Arvind Yadav2017-06-191-1/+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>
| * ata: pata_octeon_cf: make of_device_ids const.Arvind Yadav2017-06-191-1/+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>
| * libata: Convert bare printks to pr_contJoe Perches2017-06-121-21/+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>
| * libahci: wrong comments in ahci_do_softreset()Minwoo Im2017-06-121-2/+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>
| * ata: declare ata_port_info structures as constBhumika Goyal2017-06-124-6/+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>
| * ata: Add driver for Faraday Technology FTIDE010Linus Walleij2017-06-125-0/+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>
| * libata: implement SECURITY PROTOCOL IN/OUTChristoph Hellwig2017-06-052-0/+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>
| * libata: factor out a ata_identify_page_supported helperChristoph Hellwig2017-06-051-27/+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>
| * libata: clarify log page naming / groupingChristoph Hellwig2017-06-051-5/+5
| | | | | | | | | | Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Tejun Heo <tj@kernel.org>
| * libata: factor out a ata_log_supported helperChristoph Hellwig2017-06-051-43/+16
| | | | | | | | | | Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Tejun Heo <tj@kernel.org>
| * libata: move ata_read_log_page to libata-core.cChristoph Hellwig2017-06-053-66/+66
| | | | | | | | | | | | | | It is core functionality, and only one of the users is in the EH code. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Tejun Heo <tj@kernel.org>
| * ahci: qoriq: add ls1088a platforms supportYuantian Tang2017-06-021-0/+14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Ls1088a is new introduced arm-based soc with sata support with following features: * Complies with the serial ATA 3.0 specification and the AHCI 1.3.1 specification * Contains a high-speed descriptor-based DMA controller * Supports the following: * Speeds of 1.5 Gb/s (first-generation SATA), 3 Gb/s (second-generation SATA), and 6 Gb/s (third-generation SATA) * FIS-based switching * Native command queuing (NCQ) commands * Port multiplier operation * Asynchronous notification * SATA Vendor BIST mode Signed-off-by: Tang Yuantian <andy.tang@nxp.com> Signed-off-by: Tejun Heo <tj@kernel.org>
| * ata: sata_fsl: cut drvdata assignmentLinus Walleij2017-05-301-2/+0
| | | | | | | | | | | | | | | | ata_host_alloc_pinfo() assigns the host pointer to the struct device * drvdata, do not assign it a second time. Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Tejun Heo <tj@kernel.org>
| * ata: samsung_cf: cut drvdata assignmentLinus Walleij2017-05-301-2/+0
| | | | | | | | | | | | | | | | ata_host_alloc_pinfo() assigns the host pointer to the struct device * drvdata, do not assign it a second time. Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Tejun Heo <tj@kernel.org>
| * ata: rb532_cf: cut drvdata assignmentLinus Walleij2017-05-301-2/+0
| | | | | | | | | | | | | | | | ata_host_alloc_pinfo() assigns the host pointer to the struct device * drvdata, do not assign it a second time. Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Tejun Heo <tj@kernel.org>
| * ata: dwc_460ex: cut drvdata assignmentLinus Walleij2017-05-301-1/+0
| | | | | | | | | | | | | | | | ata_host_alloc_pinfo() assigns the host pointer to the struct device * drvdata, do not assign it a second time. Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Tejun Heo <tj@kernel.org>
| * ata: ep93xx: cut drvdata assignmentLinus Walleij2017-05-301-1/+0
| | | | | | | | | | | | | | | | | | | | | | ata_host_alloc_pinfo() assigns the host pointer to the struct device * drvdata, do not assign drv_data like this. Since ata_host_alloc_pinfo() is called after this site, the correct value is set eventually, but this assignment is just plain pointless. Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Tejun Heo <tj@kernel.org>
| * ata: bf54x: cut drvdata assignmentLinus Walleij2017-05-301-2/+0
| | | | | | | | | | | | | | | | ata_host_alloc_pinfo() assigns the host pointer to the struct device * drvdata, do not assign it a second time. Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Tejun Heo <tj@kernel.org>
| * ata: update references for libata documentationMauro Carvalho Chehab2017-05-1623-23/+23
| | | | | | | | | | | | | | | | | | The libata documentation is now using ReST. Update references to it to point to the new place. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com> Acked-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Signed-off-by: Tejun Heo <tj@kernel.org>
| * libata: fix identation on a kernel-doc markupMauro Carvalho Chehab2017-05-161-3/+4
| | | | | | | | | | | | | | | | | | | | Sphinx got confused with the markup identation: ./drivers/ata/libata-scsi.c:3402: ERROR: Unexpected indentation. No functional changes. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com> Signed-off-by: Tejun Heo <tj@kernel.org>
| * ata-sff: always map page before data transferTycho Andersen2017-05-161-36/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The XPFO [1] patchset may unmap pages from physmap if they happened to be destined for userspace. If such a page is unmapped, it needs to be remapped. Rather than test if a page is in the highmem/xpfo unmapped state, Christoph suggested [2] that we simply always map the page. v2: * drop comment about bounce buffer * don't save IRQs before kmap/unmap * formatting [1]: https://lkml.org/lkml/2016/11/4/245 [2]: https://lkml.org/lkml/2016/11/4/253 Suggested-and-reviewed-by: Christoph Hellwig <hch@infradead.org> Signed-off-by: Tycho Andersen <tycho@docker.com> CC: Juerg Haefliger <juerg.haefliger@hpe.com> Signed-off-by: Tejun Heo <tj@kernel.org>
* | Merge tag 'pm-4.13-rc1' of ↵Linus Torvalds2017-07-041-6/+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 ...
| * | ACPI / PM: Consolidate device wakeup settings codeRafael J. Wysocki2017-06-281-6/+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>
* | | Merge tag 'docs-4.13' of git://git.lwn.net/linuxLinus Torvalds2017-07-0423-26/+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 ...
| * | ata: update references for libata documentationMauro Carvalho Chehab2017-05-1623-23/+23
| | | | | | | | | | | | | | | | | | | | | The libata documentation is now using ReST. Update references to it to point to the new place. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
| * | libata: fix identation on a kernel-doc markupMauro Carvalho Chehab2017-05-161-3/+4
| |/ | | | | | | | | | | | | | | | | Sphinx got confused with the markup identation: ./drivers/ata/libata-scsi.c:3402: ERROR: Unexpected indentation. No functional changes. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
* | libata: fix error checking in in ata_parse_force_one()Tejun Heo2017-05-311-1/+1
| | | | | | | | | | | | | | | | | | | | | | ata_parse_force_one() was incorrectly comparing @p to @endp when it should have been comparing @id. The only consequence is that it may end up using an invalid port number in "libata.force" module param instead of rejecting it. Signed-off-by: Tejun Heo <tj@kernel.org> Reported-by: Petru-Florin Mihancea <petrum@gmail.com> Link: https://bugzilla.kernel.org/show_bug.cgi?id=195785
* | Revert "ata: sata_mv: Convert to devm_ioremap_resource()"Andrew Lunn2017-05-241-5/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This reverts commit 368e5fbdfc60732643f34f538823ed4bc8829827. devm_ioremap_resource() enforces that there are no overlapping resources, where as devm_ioremap() does not. The sata phy driver needs a subset of the sata IO address space, so maps some of the sata address space. As a result, sata_mv now fails to probe, reporting it cannot get its resources, and so we don't have any SATA disks. Signed-off-by: Andrew Lunn <andrew@lunn.ch> Acked-by: Gregory CLEMENT <gregory.clement@free-electrons.com> Cc: stable@vger.kernel.org # v4.11+ Signed-off-by: Tejun Heo <tj@kernel.org>
* | ata: libahci: properly propagate return value of platform_get_irq()Thomas Petazzoni2017-05-161-2/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When platform_get_irq() fails, it returns an error code, which libahci_platform and replaces it by -EINVAL. This commit fixes that by propagating the error code. It fixes the situation where platform_get_irq() returns -EPROBE_DEFER because the interrupt controller is not available yet, and generally looks like the right thing to do. We pay attention to not show the "no irq" message when we are in an EPROBE_DEFER situation, because the driver probing will be retried later on, once the interrupt controller becomes available to provide the interrupt. Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Reviewed-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Tejun Heo <tj@kernel.org>
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