linux-stable.git/drivers/reset, branch linux-5.12.y

reset: bail if try_module_get() fails

2021-07-20T14:02:25+00:00

[ Upstream commit 4fb26fb83f0def3d39c14e268bcd4003aae8fade ]

Abort instead of returning a new reset control for a reset controller
device that is going to have its module unloaded.

Reported-by: Uwe Kleine-König 
Fixes: 61fc41317666 ("reset: Add reset controller API")
Acked-by: Uwe Kleine-König 
Link: https://lore.kernel.org/r/20210607082615.15160-1-p.zabel@pengutronix.de
Signed-off-by: Philipp Zabel 
Signed-off-by: Sasha Levin

reset: brcmstb: Add missing MODULE_DEVICE_TABLE

2021-07-20T14:02:23+00:00

[ Upstream commit e207457f9045343a24d936fbb67eb4b412f1c6ad ]

This patch adds missing MODULE_DEVICE_TABLE definition which generates
correct modalias for automatic loading of this driver when it is built
as an external module.

Reported-by: Hulk Robot 
Fixes: 77750bc089e4 ("reset: Add Broadcom STB SW_INIT reset controller driver")
Signed-off-by: Zou Wei 
Link: https://lore.kernel.org/r/1620789283-15048-1-git-send-email-zou_wei@huawei.com
Signed-off-by: Philipp Zabel 
Signed-off-by: Sasha Levin

reset: a10sr: add missing of_match_table reference

2021-07-20T14:02:22+00:00

[ Upstream commit 466ba3c8ff4fae39e455ff8d080b3d5503302765 ]

The driver defined of_device_id table but did not use it with
of_match_table.  This prevents usual matching via devicetree and causes
a W=1 warning:

  drivers/reset/reset-a10sr.c:111:34: warning:
    ‘a10sr_reset_of_match’ defined but not used [-Wunused-const-variable=]

Reported-by: kernel test robot 
Fixes: 627006820268 ("reset: Add Altera Arria10 SR Reset Controller")
Signed-off-by: Krzysztof Kozlowski 
Link: https://lore.kernel.org/r/20210507112803.20012-1-krzysztof.kozlowski@canonical.com
Signed-off-by: Philipp Zabel 
Signed-off-by: Sasha Levin

reset: RESET_INTEL_GW should depend on X86

2021-07-20T14:02:22+00:00

[ Upstream commit 6ab9d6219f86f0db916105444813aafce626a2f4 ]

The Intel Gateway reset controller is only present on Intel Gateway
platforms.  Hence add a dependency on X86, to prevent asking the user
about this driver when configuring a kernel without Intel Gateway
support.

Fixes: c9aef213e38cde27 ("reset: intel: Add system reset controller driver")
Signed-off-by: Geert Uytterhoeven 
Signed-off-by: Philipp Zabel 
Signed-off-by: Sasha Levin

reset: RESET_BRCMSTB_RESCAL should depend on ARCH_BRCMSTB

2021-07-20T14:02:22+00:00

[ Upstream commit 42f6a76fbe85e5243f83a3ed76809b1ebbb7087e ]

The Broadcom STB RESCAL reset controller is only present on Broadcom
BCM7216 platforms.  Hence add a dependency on ARCH_BRCMSTB, to prevent
asking the user about this driver when configuring a kernel without
BCM7216 support.

Also, merely enabling CONFIG_COMPILE_TEST should not enable additional
code, and thus should not enable this driver by default.

Fixes: 4cf176e52397853e ("reset: Add Broadcom STB RESCAL reset controller")
Signed-off-by: Geert Uytterhoeven 
Acked-by: Florian Fainelli 
Signed-off-by: Philipp Zabel 
Signed-off-by: Sasha Levin

Merge tag 'riscv-for-linus-5.12-mw0' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux

2021-02-26T18:28:35+00:00

Pull RISC-V updates from Palmer Dabbelt:
"A handful of new RISC-V related patches for this merge window:

- A check to ensure drivers are properly using uaccess. This isn't
manifesting with any of the drivers I'm currently using, but may
catch errors in new drivers.

- Some preliminary support for the FU740, along with the HiFive
Unleashed it will appear on.

- NUMA support for RISC-V, which involves making the arm64 code
generic.

- Support for kasan on the vmalloc region.

- A handful of new drivers for the Kendryte K210, along with the DT
plumbing required to boot on a handful of K210-based boards.

- Support for allocating ASIDs.

- Preliminary support for kernels larger than 128MiB.

- Various other improvements to our KASAN support, including the
utilization of huge pages when allocating the KASAN regions.

We may have already found a bug with the KASAN_VMALLOC code, but it's
passing my tests. There's a fix in the works, but that will probably
miss the merge window.

* tag 'riscv-for-linus-5.12-mw0' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux: (75 commits)
riscv: Improve kasan population by using hugepages when possible
riscv: Improve kasan population function
riscv: Use KASAN_SHADOW_INIT define for kasan memory initialization
riscv: Improve kasan definitions
riscv: Get rid of MAX_EARLY_MAPPING_SIZE
soc: canaan: Sort the Makefile alphabetically
riscv: Disable KSAN_SANITIZE for vDSO
riscv: Remove unnecessary declaration
riscv: Add Canaan Kendryte K210 SD card defconfig
riscv: Update Canaan Kendryte K210 defconfig
riscv: Add Kendryte KD233 board device tree
riscv: Add SiPeed MAIXDUINO board device tree
riscv: Add SiPeed MAIX GO board device tree
riscv: Add SiPeed MAIX DOCK board device tree
riscv: Add SiPeed MAIX BiT board device tree
riscv: Update Canaan Kendryte K210 device tree
dt-bindings: add resets property to dw-apb-timer
dt-bindings: fix sifive gpio properties
dt-bindings: update sifive uart compatible string
dt-bindings: update sifive clint compatible string
...

Merge tag 'arm-drivers-v5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

2021-02-21T02:42:28+00:00

Pull ARM SoC driver updates from Arnd Bergmann:
 "Updates for SoC specific drivers include a few subsystems that have
  their own maintainers but send them through the soc tree:

  SCMI firmware:
   - add support for a completion interrupt

  Reset controllers:
   - new driver for BCM4908
   - new devm_reset_control_get_optional_exclusive_released() function

  Memory controllers:
   - Renesas RZ/G2 support
   - Tegra124 interconnect support
   - Allow more drivers to be loadable modules

  TEE/optee firmware:
   - minor code cleanup

  The other half of this is SoC specific drivers that do not belong into
  any other subsystem, most of them living in drivers/soc:

   - Allwinner/sunxi power management work
   - Allwinner H616 support

   - ASpeed AST2600 system identification support

   - AT91 SAMA7G5 SoC ID driver
   - AT91 SoC driver cleanups

   - Broadcom BCM4908 power management bus support

   - Marvell mbus cleanups

   - Mediatek MT8167 power domain support

   - Qualcomm socinfo driver support for PMIC
   - Qualcomm SoC identification for many more products

   - TI Keystone driver cleanups for PRUSS and elsewhere"

* tag 'arm-drivers-v5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (89 commits)
  soc: aspeed: socinfo: Add new systems
  soc: aspeed: snoop: Add clock control logic
  memory: tegra186-emc: Replace DEFINE_SIMPLE_ATTRIBUTE with DEFINE_DEBUGFS_ATTRIBUTE
  memory: samsung: exynos5422-dmc: Correct function names in kerneldoc
  memory: ti-emif-pm: Drop of_match_ptr from of_device_id table
  optee: simplify i2c access
  drivers: soc: atmel: fix type for same7
  tee: optee: remove need_resched() before cond_resched()
  soc: qcom: ocmem: don't return NULL in of_get_ocmem
  optee: sync OP-TEE headers
  tee: optee: fix 'physical' typos
  drivers: optee: use flexible-array member instead of zero-length array
  tee: fix some comment typos in header files
  soc: ti: k3-ringacc: Use of_device_get_match_data()
  soc: ti: pruss: Refactor the CFG sub-module init
  soc: mediatek: pm-domains: Don't print an error if child domain is deferred
  soc: mediatek: pm-domains: Add domain regulator supply
  dt-bindings: power: Add domain regulator supply
  soc: mediatek: cmdq: Remove cmdq_pkt_flush()
  soc: mediatek: pm-domains: Add support for mt8167
  ...

ARM: remove zte zx platform

2021-01-20T09:24:19+00:00

The ZTE ZX set-top-box SoC platform was added in 2015 by Jun Nie, with
Baoyou Xie and Shawn Guo subsequently becoming maintainers after the
addition of the 64-bit variant.

However, the only machines that were ever supported upstream are the
reference designs, not actual set-top-box devices that would benefit
from this support. All ZTE set-top-boxes from the past few years seem
to be based on third-party SoCs. While there is very little information
about zx296702 and zx296718 on the web, I found some references to other
chips from the same family, such as zx296716 and zx296719, which were
never submitted for upstream support. Finally, there is no support for
the GPU on either of them, with the lima and panfrost device drivers
having been added after work on the zx platform had stopped.

Shawn confirmed that he has not seen any interest in this platform for
the past four years, and that it can be removed.

Thanks to Jun and Shawn for maintaining this platform over the past
five years.

Cc: Jun Nie 
Cc: Shawn Guo 
Signed-off-by: Arnd Bergmann

riscv: Add Canaan Kendryte K210 reset controller

2021-01-14T23:08:53+00:00

Add a reset controller driver for the Canaan Kendryte K210 SoC. This
driver relies on its syscon compatible parent node (sysctl) for its
register mapping. Default this driver compilation to y when the
SOC_CANAAN option is selected.

The MAINTAINERS file is updated, adding the entry "CANAAN/KENDRYTE K210
SOC RESET CONTROLLER DRIVER" with myself listed as maintainer for this
driver.

Signed-off-by: Damien Le Moal 
Reviewed-by: Philipp Zabel 
Signed-off-by: Palmer Dabbelt

reset: core: fix a kernel-doc markup

2021-01-14T08:22:13+00:00

A function has a different name between their prototype
and its kernel-doc markup:

	../drivers/reset/core.c:888: warning: expecting prototype for device_reset(). Prototype was for __device_reset() instead

Signed-off-by: Mauro Carvalho Chehab 
Signed-off-by: Philipp Zabel