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2018-01-08ASoC: Intel: kconfig: drop boiler plate text from config itemsVinod Koul2-26/+26
Drop "Intel ASoC SST driver for " platforms and "SOC Machine Audio driver for Intel" for machines.. Signed-off-by: Vinod Koul <vinod.koul@intel.com> Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2018-01-08ASoC: Intel: kconfig: add some comments for if symbolsVinod Koul1-5/+5
Help in finding matching "if" endings by commenting the "endif". Signed-off-by: Vinod Koul <vinod.koul@intel.com> Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2018-01-08ASoC: Intel: boards: align/fix SKL/BXT/KBL KconfigsPierre-Louis Bossart1-9/+8
No reason why SND_SOC_INTEL_SST should be set here. Also make sure same dependencies are used everywhere (only last one has SPI in addition). Replace X86_INTEL_LPSS by MFD_INTEL_LPSS since the former makes no sense for Skylake+ devices Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Acked-By: Vinod Koul <vinod.koul@intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2018-01-08ASoC: Intel: boards: align Kconfig configurations for HiFi2Pierre-Louis Bossart1-14/+19
Make sure all the configs are aligned Also add the missing dependencies on SOC_ACPI stuff used to fix DAI names based on HID and fix a couple of indentation issues Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Acked-By: Vinod Koul <vinod.koul@intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2018-01-08ASoC: Intel: boards: align Kconfig dependencies for Haswell/BroadwellPierre-Louis Bossart1-1/+1
Make sure that the same I2C/I2C_DESIGNWARE_PLATFORM are selected. The latter might actually need to be moved to the SOC side of things, it really has no place in a machine driver dependency Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Acked-By: Vinod Koul <vinod.koul@intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2018-01-08ASoC: Intel: Fix nested/unnecessary Kconfig dependenciesPierre-Louis Bossart1-3/+3
This patch fixes a number of issues: 1. IOSF_MBI is only needed for byt-cr detection, which is only supported on Baytrail/Cherrytrail, move to HiFi2 config 2. SND_SOC_INTEL_SST should not select SND_SOC_INTEL_SST_ACPI, the latter config is only valid for Haswell/Baytrail legacy but not needed by Skylake 3. SND_SST_IPC_ACPI, used only by the atom/sst driver, should not select SND_SOC_INTEL_SST, none of the code under common/sst*.c is used This nesting of configs really makes no sense, it's easier to maintain if for each platform one can control what is strictly required. Compiled-tested with each of Haswell, Baytrail legacy, HiFi2, SKL cases selected independently. 0-day and explicit randconfig tests did not report additional issues and no functionality loss was observed in Intel tests on HIFI2 and SKYLAKE platforms Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Acked-By: Vinod Koul <vinod.koul@intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2018-01-08ASoC: Intel: document what Kconfig options doPierre-Louis Bossart1-3/+14
Document in comments what the options are supposed to mean, before clean-up in next patch. No functionality change here. Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Acked-By: Vinod Koul <vinod.koul@intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2018-01-08ASoC: Intel: Kconfig: Simplify-clarify ACPI/PCI dependenciesPierre-Louis Bossart2-14/+27
PCI/ACPI selections should not happen in Kconfig for machine drivers, move to SOC selections. Add distinction between PCI and ACPI HiFi2 platforms and help text. There should be no functionality change. The PCI-based platforms may be removed at some point since Medfield is not really supported by anyone, and with Edison now defunct support for Merrifield/Edison is to be determined. The dependency on SND_DMA_SGBUF for Haswell is not clear at this point and may have to be further updated. Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Acked-By: Vinod Koul <vinod.koul@intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2018-01-08ASoC: Intel: Fix Kconfig with top-level selectorPierre-Louis Bossart3-65/+97
Follow network example suggested by Linus, move Intel definitions in if/endif block and clarify in help text which options distro configurations should enable - everything except legacy Baytrail stuff and NOCODEC (test only) To avoid user confusion, machine drivers are handled with a submenu made dependent on this top-level selector. There should be no functionality change - except that sound capabilities are restored when using older configs without any user selection. Note that the SND_SOC_ACPI_INTEL_MATCH config is currently filtered out by the top-level selector. This will change in the near future to allow for this option to be selected by both SST and SOF drivers (simplification with submenu for machine drivers by Vinod Koul) Fixes: f6a118a800e3 ("ASoC: Intel: clarify Kconfig dependencies") Reported-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2018-01-08ASoC: Intel: bytcr-rt5651: add support for Line InPierre-Louis Bossart1-0/+6
Add the DAPM widgets and routes. Tested with MinnowMax Turbot + rt5651 eval board with Speaker (LineOut) -> LineIn loopback Thanks to Bard Liao @ Realtek for providing the 0dB settings "IN Capture Volume" = 23 "ADC Capture Volume" = 47 "OUT Playback Volume" = 31 "DAC1 Playback Volume" = 175 Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Acked-By: Vinod Koul <vinod.koul@intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2018-01-08ASoC: Intel: bytcr-rt5651: enable MinnowBoard Turbot quirksPierre-Louis Bossart1-0/+9
Define DMI quirk for rt5651 eval board connected to MinnowBoard Turbot. The only difference with a MinnowBoard MAX is that the MCLK pin is enabled on the LSE connector Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Tested-by: Keqiao.Zhang <Keqiao.zhang@intel.com> Acked-By: Vinod Koul <vinod.koul@intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2018-01-08ASoC: Intel: bytcr-rt5651: add quirk for IN3P which may also be usedKeyon Jie1-2/+14
On Minnowboard Max with Realtek rt5651 eval board, the IN3P is connected to Headset Mic. Here add and select it for Minnowboard Max. Signed-off-by: Keyon Jie <yang.jie@linux.intel.com> Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Acked-By: Vinod Koul <vinod.koul@intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2018-01-08ASoC: Intel: bytcr_rt5651: fix Kiano DMI quirkPierre-Louis Bossart1-1/+2
The current code doesn't enable the MCLK which reduces audio quality (PLL driven from BLCK), fix the quirk Tested-by: Carlo Caione <carlo@caione.org> Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Acked-By: Vinod Koul <vinod.koul@intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2018-01-08ASoC: Intel: sst: Fix some styleChristophe JAILLET1-3/+3
This patch fixes 3 small issues: - missing 2nd '*' at the beginning of a doxygen comment - extra space after a '\n' in a dev_dbg message - extra tab before a 'return" statement Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr> Signed-off-by: Mark Brown <broonie@kernel.org>
2018-01-08ASoC: Intel: sst: Fix the return value of 'sst_send_byte_stream_mrfld()'Christophe JAILLET1-1/+1
In some error handling paths, an error code is assiegned to 'ret'. However, the function always return 0. Fix it and return the error code if such an error paths is taken. Fixes: 3d9ff34622ba ("ASoC: Intel: sst: add stream operations") Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr> Signed-off-by: Mark Brown <broonie@kernel.org>
2018-01-08ASoC: Replace snd_soc_acpi_check_hid with acpi_dev_presentJeremy Cline2-33/+2
Replace snd_soc_acpi_check_hid() with the generic acpi_dev_present() and remove the now unused snd_soc_acpi_check_hid function. This should have no functional change. Signed-off-by: Jeremy Cline <jeremy@jcline.org> Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2018-01-08ASoC: acpi: fix machine driver selection based on quirkPierre-Louis Bossart1-5/+3
The ACPI/machine-driver code refactoring introduced in 4.13 introduced a regression for cases where we need a DMI-based quirk to select the machine driver (the BIOS reports an invalid HID). The fix is just to make sure the results of the quirk are actually used. Fixes: 54746dabf770 ('ASoC: Improve machine driver selection based on quirk data') Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=96691 Tested-by: Nicole Færber <nicole.faerber@dpin.de> Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Signed-off-by: Mark Brown <broonie@kernel.org> Cc: stable@vger.kernel.org
2018-01-03ASoC: skl: Fix kernel warning due to zero NHTL entryTakashi Iwai1-1/+2
I got the following kernel warning when loading snd-soc-skl module on Dell Latitude 7270 laptop: memremap attempted on mixed range 0x0000000000000000 size: 0x0 WARNING: CPU: 0 PID: 484 at kernel/memremap.c:98 memremap+0x8a/0x180 Call Trace: skl_nhlt_init+0x82/0xf0 [snd_soc_skl] skl_probe+0x2ee/0x7c0 [snd_soc_skl] .... It seems that the machine doesn't support the SKL DSP gives the empty NHLT entry, and it triggers the warning. For avoiding it, let do the zero check before calling memremap(). Cc: <stable@vger.kernel.org> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Mark Brown <broonie@kernel.org>
2018-01-03ASoC: Intel: Skylake: Disable clock gating during firmware and library downloadPardha Saradhi K2-0/+8
During firmware and library download, sometimes it is observed that firmware and library download is timed-out resulting into probe failure. This patch disables dynamic clock gating while firmware and library download. Signed-off-by: Pardha Saradhi K <pardha.saradhi.kesapragada@intel.com> Signed-off-by: Sanyog Kale <sanyog.r.kale@intel.com> Signed-off-by: Guneshwor Singh <guneshwor.o.singh@intel.com> Acked-By: Vinod Koul <vinod.koul@intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2017-12-20ASoC: Intel: Skylake: Ensure dai and dailink registration happens in sequence.Pankaj Bharadiya2-18/+39
Platform registration happens in probe work handler whereas machine device is registered during skl_probe. This sometimes results in cpu dais not found if the work handler is sufficiently delayed due to system load, even with deferred probe of machine driver. So move machine device registration after registering platform. Signed-off-by: Pankaj Bharadiya <pankaj.laxminarayan.bharadiya@intel.com> Signed-off-by: Subhransu S. Prusty <subhransu.s.prusty@intel.com> Signed-off-by: Guneshwor Singh <guneshwor.o.singh@intel.com> Acked-By: Vinod Koul <vinod.koul@intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2017-12-20ASoC: Intel: Skylake: Request IRQ late only after all context are initializedSubhransu S. Prusty5-7/+14
Sometimes during boot, panic is observed at sst_dsp_shim_read_unlocked(). This happens when interrupt occurs before the context is initialized. So move the irq initialization only after the context is initialized completely. Signed-off-by: Subhransu S. Prusty <subhransu.s.prusty@intel.com> Signed-off-by: Pawse, GuruprasadX <guruprasadx.pawse@intel.com> Signed-off-by: Guneshwor Singh <guneshwor.o.singh@intel.com> Acked-By: Vinod Koul <vinod.koul@intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2017-12-11ASoC: Intel: Skylake: Re-order some code to silence a warningDan Carpenter1-2/+2
I get a Smatch warning here: sound/soc/intel/skylake/skl-nhlt.c:335 skl_get_ssp_clks() error: testing array offset 'j' after use. The code is harmless, but the checker is right that we should swap these two conditions so we verify that the offset is within bounds before we use it. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Reviewed-by: Sriram Periyasamy <sriramx.periyasamy@intel.com> Acked-By: Vinod Koul <vinod.koul@intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2017-12-06ASoC: Intel: Skylake: Configure DSP clock sourcePradeep Tewani3-0/+27
DSP clock source is configured by sending the A-State table to the FW. Add the large config set IPC to configure the desired clock source Signed-off-by: Pradeep Tewani <pradeep.d.tewani@intel.com> Signed-off-by: Guneshwor Singh <guneshwor.o.singh@intel.com> Acked-By: Vinod Koul <vinod.koul@intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2017-12-06ASoC: Intel: Skylake: Parse vendor tokens to build A-State tablePradeep Tewani3-2/+76
A-State table is a power management table which allows the driver to configure the DSP clock source corresponding to various load thresholds. The table contains upto 3 A-State entries. The patch adds and parses the corresponding A-State tokens to build the table. Signed-off-by: Pradeep Tewani <pradeep.d.tewani@intel.com> Signed-off-by: Guneshwor Singh <guneshwor.o.singh@intel.com> Acked-By: Vinod Koul <vinod.koul@intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2017-12-06ASoC: Intel: Skylake: Remove second shim read in register_pollSubhransu S. Prusty1-3/+1
No need to read the register again if the value read has already matched the target during the loop. So remove the second shim read. Signed-off-by: Subhransu S. Prusty <subhransu.s.prusty@intel.com> Signed-off-by: Guneshwor Singh <guneshwor.o.singh@intel.com> Acked-by: Vinod Koul <vinod.koul@intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2017-12-05ASoC: don't use rtd->codec on Intel/haswellKuninori Morimoto1-1/+1
rtd->codec will be removed soon. rtd->codec = rtd->codec_dai->codec, thus, we can use rtd->codec_dai->component instead of it. Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2017-12-05ASoC: don't use rtd->codec on intel/skylakeKuninori Morimoto1-2/+2
rtd->codec will be removed soon. rtd->codec = rtd->codec_dai->codec, thus, we can use rtd->codec_dai->component instead of it. Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2017-12-04ASoC: Intel: Skylake: Fix descriptions for exported function argsGuneshwor Singh1-2/+4
Fix a few incorrect descriptions for arguments in exported functions. Signed-off-by: Guneshwor Singh <guneshwor.o.singh@intel.com> Acked-By: Vinod Koul <vinod.koul@intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2017-12-04ASoC: Intel: Skylake: Make local functions staticGuneshwor Singh2-3/+3
Some functions are local to the source and do not need to be in global scope, so make them static. Signed-off-by: Guneshwor Singh <guneshwor.o.singh@intel.com> Acked-By: Vinod Koul <vinod.koul@intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2017-12-01ASoC: intel: mfld: Handle return value of platform_get_irqArvind Yadav1-0/+2
platform_get_irq() can fail here and we must check its return value. Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2017-12-01ASoC: intel: sst: Handle return value of platform_get_irqArvind Yadav1-0/+3
platform_get_irq() can fail here and we must check its return value. Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2017-11-29ASoC: intel: byt: Fix quirk for KIANO laptopCarlo Caione1-1/+1
This laptop has actually two different analog mics, no just one. Fix the quirk to reflect the correct configuration. Signed-off-by: Carlo Caione <carlo@endlessm.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2017-11-29ASoC: intel: byt: Introduce new map for dual micsCarlo Caione1-0/+12
The RT5651 codec has 3 analog inputs. Some laptops have two different internal analog microphones on the external case. Add a new custom quirk mapping the two internal mics on IN1P / IN2P, leaving the headset mic on IN3P. Signed-off-by: Carlo Caione <carlo@endlessm.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2017-11-29ASoC: Intel: Skylake: Parse nhlt and register clock deviceSriram Periyasamy5-0/+395
When NHLT endpoint is present for a SSP then we create clock for that SSP. MCLK is consistent across endpoints and configuration for an SSP, so query only for first endpoint for an SSP. For SCLK/SCLKFS, the best fit is queried from the NHLT configurations which matches the clock rate requested. Best fit is decided based on below: 1. If rate matches with multiple configurations, then the first configuration is selected. 2. If for a selected fs and bits_per_sample, there are multiple endpoint configuration match, then the configuration with max number of channels is selected. So, the user has to set the rate which fits max number of channels So we create a platform device and pass clock information parsed as platform data. Signed-off-by: Sriram Periyasamy <sriramx.periyasamy@intel.com> Signed-off-by: Jaikrishna Nemallapudi <jaikrishnax.nemallapudi@intel.com> Signed-off-by: Subhransu S. Prusty <subhransu.s.prusty@intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2017-11-27ASoC: Intel: kbl_rt5663_max98927: Map BTN_0 to KEY_PLAYPAUSEBenson Leung1-1/+1
The Android 3.5mm Headset jack specification mentions that BTN_0 should be mapped to KEY_MEDIA, but this is less logical than KEY_PLAYPAUSE, which has much broader userspace support. For example, the Chrome OS userspace now supports KEY_PLAYPAUSE to toggle play/pause of videos and audio, but does not handle KEY_MEDIA. Furthermore, Android itself now supports KEY_PLAYPAUSE equivalently, as the new USB headset spec requires KEY_PLAYPAUSE for BTN_0. https://source.android.com/devices/accessories/headset/usb-headset-spec Signed-off-by: Benson Leung <bleung@chromium.org> Signed-off-by: Mark Brown <broonie@kernel.org>
2017-11-27ASoC: Intel: kbl_rt5663_rt5514_max98927: Map BTN_0 to KEY_PLAYPAUSEBenson Leung1-1/+1
The Android 3.5mm Headset jack specification mentions that BTN_0 should be mapped to KEY_MEDIA, but this is less logical than KEY_PLAYPAUSE, which has much broader userspace support. For example, the Chrome OS userspace now supports KEY_PLAYPAUSE to toggle play/pause of videos and audio, but does not handle KEY_MEDIA. Furthermore, Android itself now supports KEY_PLAYPAUSE equivalently, as the new USB headset spec requires KEY_PLAYPAUSE for BTN_0. https://source.android.com/devices/accessories/headset/usb-headset-spec Signed-off-by: Benson Leung <bleung@chromium.org> Signed-off-by: Mark Brown <broonie@kernel.org>
2017-11-26Linux 4.15-rc1Linus Torvalds1-2/+2
2017-11-26ARM: BUG if jumping to usermode address in kernel modeRussell King2-0/+24
Detect if we are returning to usermode via the normal kernel exit paths but the saved PSR value indicates that we are in kernel mode. This could occur due to corrupted stack state, which has been observed with "ftracetest". This ensures that we catch the problem case before we get to user code. Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
2017-11-24m68k/macboing: Fix missed timer callback assignmentKees Cook1-2/+2
This fixes a missed function prototype callback from the timer conversions. Reported-by: kbuild test robot <fengguang.wu@intel.com> Signed-off-by: Kees Cook <keescook@chromium.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lkml.kernel.org/r/20171123221902.GA75727@beast
2017-11-24afs: remove redundant assignment of dvnode to itselfColin Ian King1-1/+1
The assignment of dvnode to itself is redundant and can be removed. Cleans up warning detected by cppcheck: fs/afs/dir.c:975: (warning) Redundant assignment of 'dvnode' to itself. Fixes: d2ddc776a458 ("afs: Overhaul volume and server record caching and fileserver rotation") Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: David Howells <dhowells@redhat.com>
2017-11-24afs: cell: Remove unnecessary code in afs_lookup_cellGustavo A. R. Silva1-6/+1
Due to recent changes this piece of code is no longer needed. Addresses-Coverity-ID: 1462033 Link: https://lkml.kernel.org/r/4923.1510957307@warthog.procyon.org.uk Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com> Signed-off-by: David Howells <dhowells@redhat.com>
2017-11-24afs: Fix signal handling in some file opsDavid Howells1-0/+8
afs_mkdir(), afs_create(), afs_link() and afs_symlink() all need to drop the target dentry if a signal causes the operation to be killed immediately before we try to contact the server. Signed-off-by: David Howells <dhowells@redhat.com>
2017-11-24afs: Fix some dentry handling in dir ops and missing key_putsDavid Howells1-10/+5
Fix some of dentry handling in AFS directory ops: (1) Do d_drop() on the new_dentry before assigning a new inode to it in afs_vnode_new_inode(). It's fine to do this before calling afs_iget() because the operation has taken place on the server. (2) Replace d_instantiate()/d_rehash() with d_add(). (3) Don't d_drop() the new_dentry in afs_rename() on error. Also fix afs_link() and afs_rename() to call key_put() on all error paths where the key is taken. Signed-off-by: David Howells <dhowells@redhat.com>
2017-11-24afs: Make afs_write_begin() avoid writing to a page that's being storedDavid Howells1-0/+5
Make afs_write_begin() wait for a page that's marked PG_writeback because: (1) We need to avoid interference with the data being stored so that the data on the server ends up in a defined state. (2) page->private is used to track the window of dirty data within a page, but it's also used by the storage code to track what's being written, being cleared by the completion notification. Ownership can't be relinquished by the storage code until completion because it a store fails, the data must be remarked dirty. Tracing shows something like the following (edited): x86_64-linux-gn-15940 [1] afs_page_dirty: vn=ffff8800bef33800 9c75 begin 0-125 kworker/u8:3-114 [2] afs_page_dirty: vn=ffff8800bef33800 9c75 store+ 0-125 x86_64-linux-gn-15940 [1] afs_page_dirty: vn=ffff8800bef33800 9c75 begin 0-2052 kworker/u8:3-114 [2] afs_page_dirty: vn=ffff8800bef33800 9c75 clear 0-2052 kworker/u8:3-114 [2] afs_page_dirty: vn=ffff8800bef33800 9c75 store 0-0 kworker/u8:3-114 [2] afs_page_dirty: vn=ffff8800bef33800 9c75 WARN 0-0 The clear (completion) corresponding to the store+ (store continuation from a previous page) happens between the second begin (afs_write_begin) and the store corresponding to that. This results in the second store not seeing any data to write back, leading to the following warning: WARNING: CPU: 2 PID: 114 at ../fs/afs/write.c:403 afs_write_back_from_locked_page+0x19d/0x76c [kafs] Modules linked in: kafs(E) CPU: 2 PID: 114 Comm: kworker/u8:3 Tainted: G E 4.14.0-fscache+ #242 Hardware name: ASUS All Series/H97-PLUS, BIOS 2306 10/09/2014 Workqueue: writeback wb_workfn (flush-afs-2) task: ffff8800cad72600 task.stack: ffff8800cad44000 RIP: 0010:afs_write_back_from_locked_page+0x19d/0x76c [kafs] RSP: 0018:ffff8800cad47aa0 EFLAGS: 00010246 RAX: 0000000000000001 RBX: ffff8800bef33a20 RCX: 0000000000000000 RDX: 000000000000000f RSI: ffffffff81c5d0e0 RDI: ffff8800cad72e78 RBP: ffff8800d31ea1e8 R08: ffff8800c1358000 R09: ffff8800ca00e400 R10: ffff8800cad47a38 R11: ffff8800c5d9e400 R12: 0000000000000000 R13: ffffea0002d9df00 R14: ffffffffa0023c1c R15: 0000000000007fdf FS: 0000000000000000(0000) GS:ffff8800ca700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f85ac6c4000 CR3: 0000000001c10001 CR4: 00000000001606e0 Call Trace: ? clear_page_dirty_for_io+0x23a/0x267 afs_writepages_region+0x1be/0x286 [kafs] afs_writepages+0x60/0x127 [kafs] do_writepages+0x36/0x70 __writeback_single_inode+0x12f/0x635 writeback_sb_inodes+0x2cc/0x452 __writeback_inodes_wb+0x68/0x9f wb_writeback+0x208/0x470 ? wb_workfn+0x22b/0x565 wb_workfn+0x22b/0x565 ? worker_thread+0x230/0x2ac process_one_work+0x2cc/0x517 ? worker_thread+0x230/0x2ac worker_thread+0x1d4/0x2ac ? rescuer_thread+0x29b/0x29b kthread+0x15d/0x165 ? kthread_create_on_node+0x3f/0x3f ? call_usermodehelper_exec_async+0x118/0x11f ret_from_fork+0x24/0x30 Signed-off-by: David Howells <dhowells@redhat.com>
2017-11-24sched/debug: Fix task state recording/printoutThomas Gleixner1-3/+3
The recent conversion of the task state recording to use task_state_index() broke the sched_switch tracepoint task state output. task_state_index() returns surprisingly an index (0-7) which is then printed with __print_flags() applying bitmasks. Not really working and resulting in weird states like 'prev_state=t' instead of 'prev_state=I'. Use TASK_REPORT_MAX instead of TASK_STATE_MAX to report preemption. Build a bitmask from the return value of task_state_index() and store it in entry->prev_state, which makes __print_flags() work as expected. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: stable@vger.kernel.org Fixes: efb40f588b43 ("sched/tracing: Fix trace_sched_switch task-state printing") Link: http://lkml.kernel.org/r/alpine.DEB.2.20.1711221304180.1751@nanos Signed-off-by: Ingo Molnar <mingo@kernel.org>
2017-11-24x86/decoder: Add new TEST instruction patternMasami Hiramatsu1-1/+1
The kbuild test robot reported this build warning: Warning: arch/x86/tools/test_get_len found difference at <jump_table>:ffffffff8103dd2c Warning: ffffffff8103dd82: f6 09 d8 testb $0xd8,(%rcx) Warning: objdump says 3 bytes, but insn_get_length() says 2 Warning: decoded and checked 1569014 instructions with 1 warnings This sequence seems to be a new instruction not in the opcode map in the Intel SDM. The instruction sequence is "F6 09 d8", means Group3(F6), MOD(00)REG(001)RM(001), and 0xd8. Intel SDM vol2 A.4 Table A-6 said the table index in the group is "Encoding of Bits 5,4,3 of the ModR/M Byte (bits 2,1,0 in parenthesis)" In that table, opcodes listed by the index REG bits as: 000 001 010 011 100 101 110 111 TEST Ib/Iz,(undefined),NOT,NEG,MUL AL/rAX,IMUL AL/rAX,DIV AL/rAX,IDIV AL/rAX So, it seems TEST Ib is assigned to 001. Add the new pattern. Reported-by: kbuild test robot <fengguang.wu@intel.com> Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: <stable@vger.kernel.org> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-kernel@vger.kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
2017-11-23x86/PCI: Remove unused HyperTransport interrupt supportBjorn Helgaas11-454/+2
There are no in-tree callers of ht_create_irq(), the driver interface for HyperTransport interrupts, left. Remove the unused entry point and all the supporting code. See 8b955b0dddb3 ("[PATCH] Initial generic hypertransport interrupt support"). Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: "Eric W. Biederman" <ebiederm@xmission.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: linux-pci@vger.kernel.org Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Link: https://lkml.kernel.org/r/20171122221337.3877.23362.stgit@bhelgaas-glaptop.roam.corp.google.com
2017-11-23x86/umip: Fix insn_get_code_seg_params()'s return valueBorislav Petkov3-4/+4
In order to save on redundant structs definitions insn_get_code_seg_params() was made to return two 4-bit values in a char but clang complains: arch/x86/lib/insn-eval.c:780:10: warning: implicit conversion from 'int' to 'char' changes value from 132 to -124 [-Wconstant-conversion] return INSN_CODE_SEG_PARAMS(4, 8); ~~~~~~ ^~~~~~~~~~~~~~~~~~~~~~~~~~ ./arch/x86/include/asm/insn-eval.h:16:57: note: expanded from macro 'INSN_CODE_SEG_PARAMS' #define INSN_CODE_SEG_PARAMS(oper_sz, addr_sz) (oper_sz | (addr_sz << 4)) Those two values do get picked apart afterwards the opposite way of how they were ORed so wrt to the LSByte, the return value is the same. But this function returns -EINVAL in the error case, which is an int. So make it return an int which is the native word size anyway and thus fix the clang warning. Reported-by: Kees Cook <keescook@google.com> Reported-by: Nick Desaulniers <nick.desaulniers@gmail.com> Signed-off-by: Borislav Petkov <bp@suse.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: ricardo.neri-calderon@linux.intel.com Link: https://lkml.kernel.org/r/20171123091951.1462-1-bp@alien8.de
2017-11-23x86/boot/KASLR: Remove unused variableChao Fan1-3/+2
There are two variables "rc" in mem_avoid_memmap. One at the top of the function and another one inside the while() loop. Drop the outer one as it is unused. Cleanup some whitespace damage while at it. Signed-off-by: Chao Fan <fanc.fnst@cn.fujitsu.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: gregkh@linuxfoundation.org Cc: n-horiguchi@ah.jp.nec.com Cc: keescook@chromium.org Link: https://lkml.kernel.org/r/20171123090847.15293-1-fanc.fnst@cn.fujitsu.com
2017-11-23genirq/matrix: Make - vs ?: Precedence explicitKees Cook1-1/+1
Noticed with a Clang build. This improves the readability of the ?: expression, as it has lower precedence than the - expression. Show explicitly that - is evaluated first. Signed-off-by: Kees Cook <keescook@chromium.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lkml.kernel.org/r/20171122205645.GA27125@beast