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2019-07-15docs: admin-guide: add a series of orphaned documentsMauro Carvalho Chehab1-1/+1
There are lots of documents that belong to the admin-guide but are on random places (most under Documentation root dir). Move them to the admin guide. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Acked-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
2019-07-08Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6Linus Torvalds2-51/+2
Pull crypto updates from Herbert Xu: "Here is the crypto update for 5.3: API: - Test shash interface directly in testmgr - cra_driver_name is now mandatory Algorithms: - Replace arc4 crypto_cipher with library helper - Implement 5 way interleave for ECB, CBC and CTR on arm64 - Add xxhash - Add continuous self-test on noise source to drbg - Update jitter RNG Drivers: - Add support for SHA204A random number generator - Add support for 7211 in iproc-rng200 - Fix fuzz test failures in inside-secure - Fix fuzz test failures in talitos - Fix fuzz test failures in qat" * 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (143 commits) crypto: stm32/hash - remove interruptible condition for dma crypto: stm32/hash - Fix hmac issue more than 256 bytes crypto: stm32/crc32 - rename driver file crypto: amcc - remove memset after dma_alloc_coherent crypto: ccp - Switch to SPDX license identifiers crypto: ccp - Validate the the error value used to index error messages crypto: doc - Fix formatting of new crypto engine content crypto: doc - Add parameter documentation crypto: arm64/aes-ce - implement 5 way interleave for ECB, CBC and CTR crypto: arm64/aes-ce - add 5 way interleave routines crypto: talitos - drop icv_ool crypto: talitos - fix hash on SEC1. crypto: talitos - move struct talitos_edesc into talitos.h lib/scatterlist: Fix mapping iterator when sg->offset is greater than PAGE_SIZE crypto/NX: Set receive window credits to max number of CRBs in RxFIFO crypto: asymmetric_keys - select CRYPTO_HASH where needed crypto: serpent - mark __serpent_setkey_sbox noinline crypto: testmgr - dynamically allocate crypto_shash crypto: testmgr - dynamically allocate testvec_config crypto: talitos - eliminate unneeded 'done' functions at build time ...
2019-06-20hwrng: iproc-rng200 - Add support for 7211Florian Fainelli1-0/+1
BCM7211 features a RNG200 hardware random number generator block, add support for this chip by matching the chip-specific compatible string. Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2019-06-19treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500Thomas Gleixner3-12/+3
Based on 2 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 as published by the free software foundation this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 as published by the free software foundation # extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 4122 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Enrico Weigelt <info@metux.net> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190604081206.933168790@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-06-05treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 445Thomas Gleixner1-9/+1
Based on 1 normalized pattern(s): this program is free software you can distribute it and or modify it under the terms of the gnu general public license version 2 as published by the free software foundation this program is distributed in the hope it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 24 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Armijn Hemel <armijn@tjaldur.nl> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190531190115.872212424@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-06-05treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 376Thomas Gleixner1-5/+1
Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 only as published by the free software foundation extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 4 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Armijn Hemel <armijn@tjaldur.nl> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190531081036.798138318@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-06-05treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 333Thomas Gleixner2-26/+2
Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 as published by the free software foundation this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details you should have received a copy of the gnu general public license along with this program if not write to the free software foundation inc 59 temple place suite 330 boston ma 02111 1307 usa extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 136 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Alexios Zavras <alexios.zavras@intel.com> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190530000436.384967451@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-30treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 174Thomas Gleixner1-9/+1
Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 as published by the free software foundation this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 655 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Richard Fontana <rfontana@redhat.com> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070034.575739538@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-30treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 159Thomas Gleixner2-13/+2
Based on 1 normalized pattern(s): the code contained herein is licensed under the gnu general public license you may obtain a copy of the gnu general public license version 2 or later at the following locations http www opensource org licenses gpl license html http www gnu org copyleft gpl html extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 161 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Richard Fontana <rfontana@redhat.com> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070033.383790741@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-30treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157Thomas Gleixner1-10/+1
Based on 3 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version [author] [kishon] [vijay] [abraham] [i] [kishon]@[ti] [com] this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version [author] [graeme] [gregory] [gg]@[slimlogic] [co] [uk] [author] [kishon] [vijay] [abraham] [i] [kishon]@[ti] [com] [based] [on] [twl6030]_[usb] [c] [author] [hema] [hk] [hemahk]@[ti] [com] this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 1105 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Richard Fontana <rfontana@redhat.com> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070033.202006027@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-30treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152Thomas Gleixner2-10/+2
Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 3029 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070032.746973796@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-30hwrng: meson - update with SPDX Licence identifierNeil Armstrong1-51/+1
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2019-05-24treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 110Thomas Gleixner1-10/+1
Based on 1 normalized pattern(s): this file is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version this file is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 1 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Richard Fontana <rfontana@redhat.com> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190523091650.284757242@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-24treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 102Thomas Gleixner1-14/+1
Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details you should have received a copy of the gnu general public license along with this program if not write to the free software foundation inc 51 franklin st fifth floor boston ma 02110 1301 usa extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 50 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Richard Fontana <rfontana@redhat.com> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190523091649.499889647@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-21treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 13Thomas Gleixner1-14/+1
Based on 2 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details you should have received a copy of the gnu general public license along with this program if not see http www gnu org licenses this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details [based] [from] [clk] [highbank] [c] you should have received a copy of the gnu general public license along with this program if not see http www gnu org licenses extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 355 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Jilayne Lovejoy <opensource@jilayne.com> Reviewed-by: Steve Winslow <swinslow@gmail.com> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190519154041.837383322@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-21treewide: Add SPDX license identifier - Makefile/KconfigThomas Gleixner1-0/+1
Add SPDX license identifiers to all Make/Kconfig files which: - Have no license information of any form These files fall under the project license, GPL v2 only. The resulting SPDX license identifier is: GPL-2.0-only Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-21treewide: Add SPDX license identifier for more missed filesThomas Gleixner1-0/+1
Add SPDX license identifiers to all files which: - Have no license information of any form - Have MODULE_LICENCE("GPL*") inside which was used in the initial scan/conversion to ignore the file These files fall under the project license, GPL v2 only. The resulting SPDX license identifier is: GPL-2.0-only Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-04-15hwrng: stm32 - set default random qualityLionel Debieve1-0/+1
Add a default quality to hw_random device to be automatically set as new default entropy. Setting random quality will decrease the crng init time by switching to this hardware random source. Signed-off-by: Lionel Debieve <lionel.debieve@st.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2019-04-15hwrng: stm32 - fix unbalanced pm_runtime_enableLionel Debieve1-0/+8
No remove function implemented yet in the driver. Without remove function, the pm_runtime implementation complains when removing and probing again the driver. Signed-off-by: Lionel Debieve <lionel.debieve@st.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2019-03-22hwrng: omap - Set default qualityRouven Czerwinski1-0/+1
Newer combinations of the glibc, kernel and openssh can result in long initial startup times on OMAP devices: [ 6.671425] systemd-rc-once[102]: Creating ED25519 key; this may take some time ... [ 142.652491] systemd-rc-once[102]: Creating ED25519 key; done. due to the blocking getrandom(2) system call: [ 142.610335] random: crng init done Set the quality level for the omap hwrng driver allowing the kernel to use the hwrng as an entropy source at boot. Signed-off-by: Rouven Czerwinski <r.czerwinski@pengutronix.de> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2019-03-06Merge tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/socLinus Torvalds3-0/+322
Pull ARM SoC driver updates from Arnd Bergmann: "As usual, the drivers/tee and drivers/reset subsystems get merged here, with the expected set of smaller updates and some new hardware support. The tee subsystem now supports device drivers to be attached to a tee, the first example here is a random number driver with its implementation in the secure world. Three new power domain drivers get added for specific chip families: - Broadcom BCM283x chips (used in Raspberry Pi) - Qualcomm Snapdragon phone chips - Xilinx ZynqMP FPGA SoCs One new driver is added to talk to the BPMP firmware on NVIDIA Tegra210 Existing drivers are extended for new SoC variants from NXP, NVIDIA, Amlogic and Qualcomm" * tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (113 commits) tee: optee: update optee_msg.h and optee_smc.h to dual license tee: add cancellation support to client interface dpaa2-eth: configure the cache stashing amount on a queue soc: fsl: dpio: configure cache stashing destination soc: fsl: dpio: enable frame data cache stashing per software portal soc: fsl: guts: make fsl_guts_get_svr() static hwrng: make symbol 'optee_rng_id_table' static tee: optee: Fix unsigned comparison with less than zero hwrng: Fix unsigned comparison with less than zero tee: fix possible error pointer ctx dereferencing hwrng: optee: Initialize some structs using memset instead of braces tee: optee: Initialize some structs using memset instead of braces soc: fsl: dpio: fix memory leak of a struct qbman on error exit path clk: tegra: dfll: Make symbol 'tegra210_cpu_cvb_tables' static soc: qcom: llcc-slice: Fix typos qcom: soc: llcc-slice: Consolidate some code qcom: soc: llcc-slice: Clear the global drv_data pointer on error drivers: soc: xilinx: Add ZynqMP power domain driver firmware: xilinx: Add APIs to control node status/power dt-bindings: power: Add ZynqMP power domain bindings ...
2019-02-28hwrng: bcm2835 - fix probe as platform deviceJonas Gorski1-8/+10
BCM63XX (MIPS) does not use device tree, so there cannot be any of_device_id, causing the driver to fail on probe: [ 0.904564] bcm2835-rng: probe of bcm63xx-rng failed with error -22 Fix this by checking for match data only if we are probing from device tree. Fixes: 8705f24f7b57 ("hwrng: bcm2835 - Enable BCM2835 RNG to work on BCM63xx platforms") Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com> Acked-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2019-02-20hwrng: make symbol 'optee_rng_id_table' staticWei Yongjun1-1/+1
Fixes the following sparse warning: drivers/char/hw_random/optee-rng.c:265:35: warning: symbol 'optee_rng_id_table' was not declared. Should it be static? Fixes: 5fe8b1cc6a03 ("hwrng: add OP-TEE based rng driver") Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com> Reviewed-by: Sumit Garg <sumit.garg@linaro.org> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2019-02-20hwrng: Fix unsigned comparison with less than zeroYueHaibing1-2/+2
The return from the call to tee_client_invoke_func can be a negative error code however this is being assigned to an unsigned variable 'ret' hence the check is always false. Fix this by making 'ret' an int. Detected by Coccinelle ("Unsigned expression compared with zero: ret < 0") Fixes: 5fe8b1cc6a03 ("hwrng: add OP-TEE based rng driver") Signed-off-by: YueHaibing <yuehaibing@huawei.com> Reviewed-by: Sumit Garg <sumit.garg@linaro.org> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2019-02-20hwrng: optee: Initialize some structs using memset instead of bracesNathan Chancellor1-5/+13
Clang warns: drivers/char/hw_random/optee-rng.c:80:31: warning: suggest braces around initialization of subobject [-Wmissing-braces] struct tee_param param[4] = {0}; ^ {} drivers/char/hw_random/optee-rng.c:177:31: warning: suggest braces around initialization of subobject [-Wmissing-braces] struct tee_param param[4] = {0}; ^ {} drivers/char/hw_random/optee-rng.c:212:48: warning: suggest braces around initialization of subobject [-Wmissing-braces] struct tee_ioctl_open_session_arg sess_arg = {0}; ^ {} 3 warnings generated. One way to fix these warnings is to add additional braces like Clang suggests; however, there has been a bit of push back from some maintainers, who just prefer memset as it is unambiguous, doesn't depend on a particular compiler version, and properly initializes all subobjects [1][2]. Do that here so there are no more warnings. [1]: https://lore.kernel.org/lkml/022e41c0-8465-dc7a-a45c-64187ecd9684@amd.com/ [2]: https://lore.kernel.org/lkml/20181128.215241.702406654469517539.davem@davemloft.net/ Fixes: 5fe8b1cc6a03 ("hwrng: add OP-TEE based rng driver") Link: https://github.com/ClangBuiltLinux/linux/issues/369 Signed-off-by: Nathan Chancellor <natechancellor@gmail.com> Reviewed-by: Sumit Garg <sumit.garg@linaro.org> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2019-02-01hwrng: add OP-TEE based rng driverSumit Garg3-0/+314
On ARM SoC's with TrustZone enabled, peripherals like entropy sources might not be accessible to normal world (linux in this case) and rather accessible to secure world (OP-TEE in this case) only. So this driver aims to provides a generic interface to OP-TEE based random number generator service. This driver registers on TEE bus to interact with OP-TEE based rng device/service. Signed-off-by: Sumit Garg <sumit.garg@linaro.org> Reviewed-by: Daniel Thompson <daniel.thompson@linaro.org> Acked-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
2019-01-25hwrng: virtio - Avoid repeated init of completionDavid Tolnay1-1/+1
The virtio-rng driver uses a completion called have_data to wait for a virtio read to be fulfilled by the hypervisor. The completion is reset before placing a buffer on the virtio queue and completed by the virtio callback once data has been written into the buffer. Prior to this commit, the driver called init_completion on this completion both during probe as well as when registering virtio buffers as part of a hwrng read operation. The second of these init_completion calls should instead be reinit_completion because the have_data completion has already been inited by probe. As described in Documentation/scheduler/completion.txt, "Calling init_completion() twice on the same completion object is most likely a bug". This bug was present in the initial implementation of virtio-rng in f7f510ec1957 ("virtio: An entropy device, as suggested by hpa"). Back then the have_data completion was a single static completion rather than a member of one of potentially multiple virtrng_info structs as implemented later by 08e53fbdb85c ("virtio-rng: support multiple virtio-rng devices"). The original driver incorrectly used init_completion rather than INIT_COMPLETION to reset have_data during read. Tested by running `head -c48 /dev/random | hexdump` within crosvm, the Chrome OS virtual machine monitor, and confirming that the virtio-rng driver successfully produces random bytes from the host. Signed-off-by: David Tolnay <dtolnay@gmail.com> Tested-by: David Tolnay <dtolnay@gmail.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2018-11-16hwrng: bcm2835 - Switch to SPDX identifierStefan Wahren1-5/+2
Adopt the SPDX license identifier headers to ease license compliance management. While we are at this fix the comment style, too. Cc: Lubomir Rintel <lkundrak@v3.sk> Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Reviewed-by: Eric Anholt <eric@anholt.net> Acked-by: Lubomir Rintel <lkundrak@v3.sk> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2018-10-05hwrng: core - document the quality fieldMichael S. Tsirkin1-2/+2
quality field is currently documented as being 'per mill'. In fact the math involved is: add_hwgenerator_randomness((void *)rng_fillbuf, rc, rc * current_quality * 8 >> 10); thus the actual definition is "bits of entropy per 1024 bits of input". The current documentation seems to have confused multiple people in the past, let's fix the documentation to match code. An alternative is to change core to match driver expectations, replacing rc * current_quality * 8 >> 10 with rc * current_quality / 1000 but that has performance costs, so probably isn't a good option. Fixes: 0f734e6e768 ("hwrng: add per-device entropy derating") Reported-by: "Dr. David Alan Gilbert" <dgilbert@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2018-08-18Merge tag 'char-misc-4.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-miscLinus Torvalds4-0/+4
Pull char/misc driver updates from Greg KH: "Here is the bit set of char/misc drivers for 4.19-rc1 There is a lot here, much more than normal, seems like everyone is writing new driver subsystems these days... Anyway, major things here are: - new FSI driver subsystem, yet-another-powerpc low-level hardware bus - gnss, finally an in-kernel GPS subsystem to try to tame all of the crazy out-of-tree drivers that have been floating around for years, combined with some really hacky userspace implementations. This is only for GNSS receivers, but you have to start somewhere, and this is great to see. Other than that, there are new slimbus drivers, new coresight drivers, new fpga drivers, and loads of DT bindings for all of these and existing drivers. All of these have been in linux-next for a while with no reported issues" * tag 'char-misc-4.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (255 commits) android: binder: Rate-limit debug and userspace triggered err msgs fsi: sbefifo: Bump max command length fsi: scom: Fix NULL dereference misc: mic: SCIF Fix scif_get_new_port() error handling misc: cxl: changed asterisk position genwqe: card_base: Use true and false for boolean values misc: eeprom: assignment outside the if statement uio: potential double frees if __uio_register_device() fails eeprom: idt_89hpesx: clean up an error pointer vs NULL inconsistency misc: ti-st: Fix memory leak in the error path of probe() android: binder: Show extra_buffers_size in trace firmware: vpd: Fix section enabled flag on vpd_section_destroy platform: goldfish: Retire pdev_bus goldfish: Use dedicated macros instead of manual bit shifting goldfish: Add missing includes to goldfish.h mux: adgs1408: new driver for Analog Devices ADGS1408/1409 mux dt-bindings: mux: add adi,adgs1408 Drivers: hv: vmbus: Cleanup synic memory free path Drivers: hv: vmbus: Remove use of slow_virt_to_phys() Drivers: hv: vmbus: Reset the channel callback in vmbus_onoffer_rescind() ...
2018-08-03Merge git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linuxHerbert Xu1-2/+9
Merge mainline to pick up c7513c2a2714 ("crypto/arm64: aes-ce-gcm - add missing kernel_neon_begin/end pair").
2018-07-27hwrng: msm - remove msm hw_random driverVinod Koul3-197/+0
This driver is for a psedo-rng so should not be added in hwrng. Remove it so that it's replacement can be added. Signed-off-by: Vinod Koul <vkoul@kernel.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2018-07-07headers: separate linux/mod_devicetable.h from linux/platform_device.hRandy Dunlap4-0/+4
At over 4000 #includes, <linux/platform_device.h> is the 9th most #included header file in the Linux kernel. It does not need <linux/mod_devicetable.h>, so drop that header and explicitly add <linux/mod_devicetable.h> to source files that need it. 4146 #include <linux/platform_device.h> After this patch, there are 225 files that use <linux/mod_devicetable.h>, for a reduction of around 3900 times that <linux/mod_devicetable.h> does not have to be read & parsed. 225 #include <linux/mod_devicetable.h> This patch was build-tested on 20 different arch-es. It also makes these drivers SubmitChecklist#1 compliant. Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Reported-by: kbuild test robot <lkp@intel.com> # drivers/media/platform/vimc/ Reported-by: kbuild test robot <lkp@intel.com> # drivers/pinctrl/pinctrl-u300.c Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-06-15hwrng: core - Always drop the RNG in hwrng_unregister()Michael Büsch1-2/+9
enable_best_rng() is used in hwrng_unregister() to switch away from the currently active RNG, if that is the one currently being removed. However enable_best_rng() might fail, if the next RNG's init routine fails. In that case enable_best_rng() will return an error code and the currently active RNG will remain active. After unregistering this might lead to crashes due to use-after-free. Fix this by dropping the currently active RNG, if enable_best_rng() failed. This will result in no RNG to be active, if the next-best one failed to initialize. This problem was introduced by 142a27f0a731ddcf467546960a5585970ca98e21 Fixes: 142a27f0a731 ("hwrng: core - Reset user selected rng by...") Reported-by: Wirz <spam@lukas-wirz.de> Tested-by: Wirz <spam@lukas-wirz.de> Signed-off-by: Michael Büsch <m@bues.ch> Cc: stable@vger.kernel.org Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2018-05-19hwrng: n2 - fix spelling mistake: "restesting" -> "retesting"Colin Ian King1-1/+1
Trivial fix to spelling mistake in dev_err error message Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2018-05-05hwrng: stm32 - fix pm_suspend issuelionel.debieve@st.com1-2/+7
When suspend is called after pm_runtime_suspend, same callback is used and access to rng register is freezing system. By calling the pm_runtime_force_suspend, it first checks that runtime has been already done. Signed-off-by: Lionel Debieve <lionel.debieve@st.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2018-05-05hwrng: stm32 - define default state for rng driverlionel.debieve@st.com1-0/+1
Define default state for stm32_rng driver. It will be default selected with multi_v7_defconfig Signed-off-by: Lionel Debieve <lionel.debieve@st.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2018-04-21hwrng: via - support new Centaur CPUdavidwang1-1/+1
New Centaur CPU(Family > 6) supprt Random Number Generator, but can't support MSR_VIA_RNG. Just like VIA Nano. Signed-off-by: David Wang <davidwang@zhaoxin.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2018-04-04Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6Linus Torvalds10-32/+330
Pull crypto updates from Herbert Xu: "API: - add AEAD support to crypto engine - allow batch registration in simd Algorithms: - add CFB mode - add speck block cipher - add sm4 block cipher - new test case for crct10dif - improve scheduling latency on ARM - scatter/gather support to gcm in aesni - convert x86 crypto algorithms to skcihper Drivers: - hmac(sha224/sha256) support in inside-secure - aes gcm/ccm support in stm32 - stm32mp1 support in stm32 - ccree driver from staging tree - gcm support over QI in caam - add ks-sa hwrng driver" * 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (212 commits) crypto: ccree - remove unused enums crypto: ahash - Fix early termination in hash walk crypto: brcm - explicitly cast cipher to hash type crypto: talitos - don't leak pointers to authenc keys crypto: qat - don't leak pointers to authenc keys crypto: picoxcell - don't leak pointers to authenc keys crypto: ixp4xx - don't leak pointers to authenc keys crypto: chelsio - don't leak pointers to authenc keys crypto: caam/qi - don't leak pointers to authenc keys crypto: caam - don't leak pointers to authenc keys crypto: lrw - Free rctx->ext with kzfree crypto: talitos - fix IPsec cipher in length crypto: Deduplicate le32_to_cpu_array() and cpu_to_le32_array() crypto: doc - clarify hash callbacks state machine crypto: api - Keep failed instances alive crypto: api - Make crypto_alg_lookup static crypto: api - Remove unused crypto_type lookup function crypto: chelsio - Remove declaration of static function from header crypto: inside-secure - hmac(sha224) support crypto: inside-secure - hmac(sha256) support ..
2018-03-23hwrng: ks-sa - add hw_random driverVitaly Andrianov3-0/+265
Keystone Security Accelerator module has a hardware random generator sub-module. This commit adds the driver for this sub-module. Signed-off-by: Vitaly Andrianov <vitalya@ti.com> [t-kristo@ti.com: dropped one unnecessary dev_err message] Signed-off-by: Tero Kristo <t-kristo@ti.com> Signed-off-by: Murali Karicheri <m-karicheri2@ti.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2018-03-16hwrng: mxc-rnga - add driver support on boards with device treeVladimir Zapolskiy1-9/+14
The driver works well on i.MX31 powered boards with device description taken from board device tree, the only change to add to the driver is the missing OF device id, the affected list of included headers and indentation in platform driver struct are beautified a little. Signed-off-by: Vladimir Zapolskiy <vz@mleia.com> Reviewed-by: Fabio Estevam <fabio.estevam@nxp.com> Reviewed-by: Kim Phillips <kim.phillips@arm.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2018-03-09hwrng: omap - Fix clock resource by adding a register clockGregory CLEMENT1-0/+16
On Armada 7K/8K we need to explicitly enable the register clock. This clock is optional because not all the SoCs using this IP need it but at least for Armada 7K/8K it is actually mandatory. The binding documentation is updating accordingly. Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2018-03-09hwrng: omap - Remove useless test before clk_disable_unprepareGregory CLEMENT1-4/+2
clk_disable_unprepare() already checks that the clock pointer is valid. No need to test it before calling it. Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2018-03-09hwrng: cavium - make two functions staticColin Ian King2-2/+2
Functions cavium_rng_remove and cavium_rng_remove_vf are local to the source and do not need to be in global scope, so make them static. Cleans up sparse warnings: drivers/char/hw_random/cavium-rng-vf.c:80:7: warning: symbol 'cavium_rng_remove_vf' was not declared. Should it be static? drivers/char/hw_random/cavium-rng.c:65:7: warning: symbol 'cavium_rng_remove' was not declared. Should it be static? Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2018-03-03hwrng: stm32 - rework read timeout calculationlionel.debieve@st.com1-15/+10
Increase timeout delay to support longer timing linked to rng initialization. Measurement is based on timer instead of instructions per iteration which is not powerful on all targets. Signed-off-by: Lionel Debieve <lionel.debieve@st.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2018-03-03hwrng: stm32 - allow disable clock error detectionlionel.debieve@st.com1-1/+9
Add a new property that allow to disable the clock error detection which is required when the clock source selected is out of specification (which is not mandatory). Signed-off-by: Lionel Debieve <lionel.debieve@st.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2018-03-03hwrng: stm32 - add reset during probelionel.debieve@st.com1-0/+9
Avoid issue when probing the RNG without reset if bad status has been detected previously Signed-off-by: Lionel Debieve <lionel.debieve@st.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2018-02-22hwrng: bcm2835 - Handle deferred clock properlyStefan Wahren1-0/+2
In case the probe of the clock is deferred, we would assume it is optional. This is wrong, so defer the probe of this driver until the clock is available. Fixes: 791af4f4907a ("hwrng: bcm2835 - Manage an optional clock") Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com> Acked-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2018-02-15hwrng: imx-rngc - make symbol imx_rngc_pm_ops staticweiyongjun \(A\)1-1/+1
Fixes the following sparse warnings: drivers/char/hw_random/imx-rngc.c:303:1: warning: symbol 'imx_rngc_pm_ops' was not declared. Should it be static? Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com> Reviewed-by: Martin Kaiser <martin@kaiser.cx> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2018-02-14Merge branch 'x86-pti-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds1-1/+1
Pull x86 PTI and Spectre related fixes and updates from Ingo Molnar: "Here's the latest set of Spectre and PTI related fixes and updates: Spectre: - Add entry code register clearing to reduce the Spectre attack surface - Update the Spectre microcode blacklist - Inline the KVM Spectre helpers to get close to v4.14 performance again. - Fix indirect_branch_prediction_barrier() - Fix/improve Spectre related kernel messages - Fix array_index_nospec_mask() asm constraint - KVM: fix two MSR handling bugs PTI: - Fix a paranoid entry PTI CR3 handling bug - Fix comments objtool: - Fix paranoid_entry() frame pointer warning - Annotate WARN()-related UD2 as reachable - Various fixes - Add Add Peter Zijlstra as objtool co-maintainer Misc: - Various x86 entry code self-test fixes - Improve/simplify entry code stack frame generation and handling after recent heavy-handed PTI and Spectre changes. (There's two more WIP improvements expected here.) - Type fix for cache entries There's also some low risk non-fix changes I've included in this branch to reduce backporting conflicts: - rename a confusing x86_cpu field name - de-obfuscate the naming of single-TLB flushing primitives" * 'x86-pti-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (41 commits) x86/entry/64: Fix CR3 restore in paranoid_exit() x86/cpu: Change type of x86_cache_size variable to unsigned int x86/spectre: Fix an error message x86/cpu: Rename cpu_data.x86_mask to cpu_data.x86_stepping selftests/x86/mpx: Fix incorrect bounds with old _sigfault x86/mm: Rename flush_tlb_single() and flush_tlb_one() to __flush_tlb_one_[user|kernel]() x86/speculation: Add <asm/msr-index.h> dependency nospec: Move array_index_nospec() parameter checking into separate macro x86/speculation: Fix up array_index_nospec_mask() asm constraint x86/debug: Use UD2 for WARN() x86/debug, objtool: Annotate WARN()-related UD2 as reachable objtool: Fix segfault in ignore_unreachable_insn() selftests/x86: Disable tests requiring 32-bit support on pure 64-bit systems selftests/x86: Do not rely on "int $0x80" in single_step_syscall.c selftests/x86: Do not rely on "int $0x80" in test_mremap_vdso.c selftests/x86: Fix build bug caused by the 5lvl test which has been moved to the VM directory selftests/x86/pkeys: Remove unused functions selftests/x86: Clean up and document sscanf() usage selftests/x86: Fix vDSO selftest segfault for vsyscall=none x86/entry/64: Remove the unused 'icebp' macro ...