linux-stable.git/arch/arm, branch v4.6.3 Linux kernel stable tree ARM: fix PTRACE_SETVFPREGS on SMP systems 2016-06-24T17:22:02+00:00 Russell King rmk+kernel@armlinux.org.uk 2016-05-30T22:14:56+00:00 3a2ec1551c13f5a3e8a405bb92babc11c473fa7f commit e2dfb4b880146bfd4b6aa8e138c0205407cebbaf upstream. PTRACE_SETVFPREGS fails to properly mark the VFP register set to be reloaded, because it undoes one of the effects of vfp_flush_hwstate(). Specifically vfp_flush_hwstate() sets thread->vfpstate.hard.cpu to an invalid CPU number, but vfp_set() overwrites this with the original CPU number, thereby rendering the hardware state as apparently "valid", even though the software state is more recent. Fix this by reverting the previous change. Fixes: 8130b9d7b9d8 ("ARM: 7308/1: vfp: flush thread hwstate before copying ptrace registers") Acked-by: Will Deacon <will.deacon@arm.com> Tested-by: Simon Marchi <simon.marchi@ericsson.com> Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
commit e2dfb4b880146bfd4b6aa8e138c0205407cebbaf upstream.

PTRACE_SETVFPREGS fails to properly mark the VFP register set to be
reloaded, because it undoes one of the effects of vfp_flush_hwstate().

Specifically vfp_flush_hwstate() sets thread->vfpstate.hard.cpu to
an invalid CPU number, but vfp_set() overwrites this with the original
CPU number, thereby rendering the hardware state as apparently "valid",
even though the software state is more recent.

Fix this by reverting the previous change.

Fixes: 8130b9d7b9d8 ("ARM: 7308/1: vfp: flush thread hwstate before copying ptrace registers")
Acked-by: Will Deacon <will.deacon@arm.com>
Tested-by: Simon Marchi <simon.marchi@ericsson.com>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
ARM: dts: exynos: Add interrupt line to MAX8997 PMIC on exynos4210-trats 2016-06-08T01:23:35+00:00 Marek Szyprowski m.szyprowski@samsung.com 2016-05-06T07:27:16+00:00 37278f9db951f11b200c549e4250847ca82a3e96 commit 330d12764e15f6e3e94ff34cda29db96d2589c24 upstream. MAX8997 PMIC requires interrupt and fails probing without it. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Fixes: d105f0b1215d ("ARM: dts: Add basic dts file for Samsung Trats board") [k.kozlowski: Write commit message, add CC-stable] Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
commit 330d12764e15f6e3e94ff34cda29db96d2589c24 upstream.

MAX8997 PMIC requires interrupt and fails probing without it.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Fixes: d105f0b1215d ("ARM: dts: Add basic dts file for Samsung Trats board")
[k.kozlowski: Write commit message, add CC-stable]
Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
ARM: dts: at91: fix typo in sama5d2 PIN_PD24 description 2016-06-08T01:23:35+00:00 Florian Vallee fvallee@eukrea.fr 2016-04-19T15:50:05+00:00 5d787de946242221c4eef057c84ecc85576b8292 commit b1f3a3b03eb5f61b4051e2da9aa15653e705e111 upstream. Fix a typo on PIN_PD24 for UTXD2 and FLEXCOM4_IO3 which were wrongly linked to PIN_PD23). Signed-off-by: Florian Vallee <fvallee@eukrea.fr> Fixes: 7f16cb676c00 ("ARM: at91/dt: add sama5d2 pinmux") [nicolas.ferre@atmel.com: add commit message, changed subject] Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
commit b1f3a3b03eb5f61b4051e2da9aa15653e705e111 upstream.

Fix a typo on PIN_PD24 for UTXD2 and FLEXCOM4_IO3 which were
wrongly linked to PIN_PD23).

Signed-off-by: Florian Vallee <fvallee@eukrea.fr>
Fixes: 7f16cb676c00 ("ARM: at91/dt: add sama5d2 pinmux")
[nicolas.ferre@atmel.com: add commit message, changed subject]
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
ARM: mvebu: fix GPIO config on the Linksys boards 2016-06-08T01:23:35+00:00 Imre Kaloz kaloz@openwrt.org 2015-07-31T18:42:00+00:00 eca549900e5b9ccd0d32ea27bb8d2717b54e2657 commit 9800917cf92f5b5fe5cae706cb70db8d014f663c upstream. Some of the GPIO configs were wrong in the submitted DTS files, this patch fixes all affected boards. Signed-off-by: Imre Kaloz <kaloz@openwrt.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com> 
commit 9800917cf92f5b5fe5cae706cb70db8d014f663c upstream.

Some of the GPIO configs were wrong in the submitted DTS files,
this patch fixes all affected boards.

Signed-off-by: Imre Kaloz <kaloz@openwrt.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
ARM: sun7i: dt: Enable dram gate 5 (tve0 clock) for simplefb TV output 2016-06-08T01:23:35+00:00 Priit Laes plaes@plaes.org 2016-03-24T19:52:17+00:00 6a78b3ecd8219a476646682665a8b7b59d2098a7 commit 4b8ccef22fb547007ac38c4e5a28a773adee1e6e upstream. Seems like dram_gate 5 was forgotten when DRAM gating driver was added. Add it. Fixes: 0b4bf5a5200b (ARM: dts: sun7i: Add DRAM gates) Signed-off-by: Priit Laes <plaes@plaes.org> Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
commit 4b8ccef22fb547007ac38c4e5a28a773adee1e6e upstream.

Seems like dram_gate 5 was forgotten when DRAM gating driver was added.

Add it.

Fixes: 0b4bf5a5200b (ARM: dts: sun7i: Add DRAM gates)
Signed-off-by: Priit Laes <plaes@plaes.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
ARM: sun4i: dt: Enable dram gate 5 (tve0 clock) for simplefb TV output 2016-06-08T01:23:35+00:00 Priit Laes plaes@plaes.org 2016-03-24T19:52:16+00:00 b8f8349d497205286fd405d2fdf689a631e1f322 commit bec38aaafd9ec1463dd3857f02bc029707e4213d upstream. Seems like dram_gate 5 was forgotten when DRAM gate driver was added. Enable it. Fixes: 82f8582feef4 (ARM: dts: sun4i: Add DRAM gates) Signed-off-by: Priit Laes <plaes@plaes.org> Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
commit bec38aaafd9ec1463dd3857f02bc029707e4213d upstream.

Seems like dram_gate 5 was forgotten when DRAM gate driver was added.

Enable it.

Fixes: 82f8582feef4 (ARM: dts: sun4i: Add DRAM gates)
Signed-off-by: Priit Laes <plaes@plaes.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
arm/arm64: KVM: Enforce Break-Before-Make on Stage-2 page tables 2016-06-01T19:17:57+00:00 Marc Zyngier marc.zyngier@arm.com 2016-04-28T15:16:31+00:00 6754f36bb80ab0b5b3e76b80e9c8de4257b9af92 commit d4b9e0790aa764c0b01e18d4e8d33e93ba36d51f upstream. The ARM architecture mandates that when changing a page table entry from a valid entry to another valid entry, an invalid entry is first written, TLB invalidated, and only then the new entry being written. The current code doesn't respect this, directly writing the new entry and only then invalidating TLBs. Let's fix it up. Reported-by: Christoffer Dall <christoffer.dall@linaro.org> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
commit d4b9e0790aa764c0b01e18d4e8d33e93ba36d51f upstream.

The ARM architecture mandates that when changing a page table entry
from a valid entry to another valid entry, an invalid entry is first
written, TLB invalidated, and only then the new entry being written.

The current code doesn't respect this, directly writing the new
entry and only then invalidating TLBs. Let's fix it up.

Reported-by: Christoffer Dall <christoffer.dall@linaro.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Merge tag 'at91-fixes2' of git://git.kernel.org/pub/scm/linux/kernel/git/nferre/linux-at91 into fixes 2016-05-12T15:44:53+00:00 Arnd Bergmann arnd@arndb.de 2016-05-12T15:44:53+00:00 8a934ccbf90959877beec27780469e85f1c3f101 Merge "Second AT91 fix PR for 4.6" from Nicolas Ferre: - fix a regression on the clock subsystem while switching to syscon/regmap due to a stricter check of the register map. * tag 'at91-fixes2' of git://git.kernel.org/pub/scm/linux/kernel/git/nferre/linux-at91: ARM: dts: at91: sam9x5: Fix the memory range assigned to the PMC 
Merge "Second AT91 fix PR for 4.6" from Nicolas Ferre:

- fix a regression on the clock subsystem while switching to syscon/regmap
  due to a stricter check of the register map.

* tag 'at91-fixes2' of git://git.kernel.org/pub/scm/linux/kernel/git/nferre/linux-at91:
  ARM: dts: at91: sam9x5: Fix the memory range assigned to the PMC
ARM: dts: at91: sam9x5: Fix the memory range assigned to the PMC 2016-05-11T14:31:40+00:00 Boris Brezillon boris.brezillon@free-electrons.com 2016-05-11T09:00:02+00:00 aab0a4c83ceb344d2327194bf354820e50607af6 The memory range assigned to the PMC (Power Management Controller) was not including the PMC_PCR register which are used to control peripheral clocks. This was working fine thanks to the page granularity of ioremap(), but started to fail when we switched to syscon/regmap, because regmap is making sure that all accesses are falling into the reserved range. Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com> Reported-by: Richard Genoud <richard.genoud@gmail.com> Tested-by: Richard Genoud <richard.genoud@gmail.com> Fixes: 863a81c3be1d ("clk: at91: make use of syscon to share PMC registers in several drivers") Cc: <stable@vger.kernel.org> Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com> 
The memory range assigned to the PMC (Power Management Controller) was
not including the PMC_PCR register which are used to control peripheral
clocks.

This was working fine thanks to the page granularity of ioremap(), but
started to fail when we switched to syscon/regmap, because regmap is
making sure that all accesses are falling into the reserved range.

Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Reported-by: Richard Genoud <richard.genoud@gmail.com>
Tested-by: Richard Genoud <richard.genoud@gmail.com>
Fixes: 863a81c3be1d ("clk: at91: make use of syscon to share PMC registers in several drivers")
Cc: <stable@vger.kernel.org>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Merge tag 'at91-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nferre/linux-at91 into fixes 2016-05-10T09:28:22+00:00 Arnd Bergmann arnd@arndb.de 2016-05-10T09:27:45+00:00 e061b5695ad52c987d4ee9033a6d09163da6607a Merge "at91: fixes for 4.6 #1" from Nicolas Ferre: Here is a late fix for AT91. Sorry to have figure it out so late in the development cycle but we had to confirm it was an error with the documentation of two products. So, as the compatibility string is in since 4.6-rc1 and that the previous one works okay, it's a good opportunity to switch back to the one that works without introducing a intermediary bug. The revert on driver code and the removal of the useless additional compatibility string will be queued for 4.7 through NAND/MTD. * tag 'at91-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nferre/linux-at91: ARM: dts: at91: sama5d2: use "atmel,sama5d3-nfc" compatible for nfc 
Merge "at91: fixes for 4.6 #1" from Nicolas Ferre:

Here is a late fix for AT91. Sorry to have figure it out so late in the
development cycle but we had to confirm it was an error with the documentation
of two products.
So, as the compatibility string is in since 4.6-rc1 and that the previous one
works okay, it's a good opportunity to switch back to the one that works without
introducing a intermediary bug.
The revert on driver code and the removal of the useless additional
compatibility string will be queued for 4.7 through NAND/MTD.

* tag 'at91-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nferre/linux-at91:
  ARM: dts: at91: sama5d2: use "atmel,sama5d3-nfc" compatible for nfc