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  1. 17 7月, 2019 3 次提交
  3. 16 7月, 2019 1 次提交
    • S
      MIPS: fix some more fall through errors in arch/mips · e5793cd1
      由 Stephen Rothwell 提交于 
      Fix these errors:

 arch/mips/cavium-octeon/executive/cvmx-pko.c:489:7: error: this statement may fall through [-Werror=implicit-fallthrough=]
 arch/mips/bcm63xx/dev-flash.c:89:3: error: this statement may fall through [-Werror=implicit-fallthrough=]
 arch/mips/ath79/setup.c:155:17: error: this statement may fall through [-Werror=implicit-fallthrough=]
 arch/mips/ar7/setup.c:50:3: error: this statement may fall through [-Werror=implicit-fallthrough=]

Cc: Florian Fainelli <f.fainelli@gmail.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: John Crispin <john@phrozen.org>
Cc: Matthias Schiffer <mschiffer@universe-factory.net>
Cc: "Petr Štetiar" <ynezz@true.cz>
Signed-off-by: NStephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: NPaul Burton <paul.burton@mips.com>
      e5793cd1
  5. 15 7月, 2019 3 次提交
    • M
      docs: arm: convert docs to ReST and rename to *.rst · dc7a12bd
      由 Mauro Carvalho Chehab 提交于 
      Converts ARM the text files to ReST, preparing them to be an
architecture book.

The conversion is actually:
  - add blank lines and identation in order to identify paragraphs;
  - fix tables markups;
  - add some lists markups;
  - mark literal blocks;
  - adjust title markups.

At its new index.rst, let's add a :orphan: while this is not linked to
the main index.rst file, in order to avoid build warnings.
Signed-off-by: NMauro Carvalho Chehab <mchehab+samsung@kernel.org>
Reviewed-by Corentin Labbe <clabbe.montjoie@gmail.com> # For sun4i-ss
      dc7a12bd
    • S
      MIPS: perf events: handle switch statement falling through warnings · 03bcba73
      由 Stephen Rothwell 提交于 
      Now that we build with -Wimplicit-fallthrough=3, some warnings are
produced in the arch/mips perf events code that are promoted to errors:

 arch/mips/kernel/perf_event_mipsxx.c:792:3: error: this statement may fall through [-Werror=implicit-fallthrough=]
 arch/mips/kernel/perf_event_mipsxx.c:795:3: error: this statement may fall through [-Werror=implicit-fallthrough=]
 arch/mips/kernel/perf_event_mipsxx.c:798:3: error: this statement may fall through [-Werror=implicit-fallthrough=]
 arch/mips/kernel/perf_event_mipsxx.c:1407:6: error: this statement may fall through [-Werror=implicit-fallthrough=]

Assume the fall throughs are deliberate amd annotate/eliminate them.

Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Gustavo A. R. Silva <gustavo@embeddedor.com>
Cc: Kees Cook <keescook@chromium.org>
Signed-off-by: NStephen Rothwell <sfr@canb.auug.org.au>
[paul.burton@mips.com:
  - Make n signed to fix the loop condition.
  - Simplify the initialization of n, which should never have a value
    greater than 4.
  - Invert conditions in the loop to decrease indentation.]
Signed-off-by: NPaul Burton <paul.burton@mips.com>
      03bcba73
    • C
      arch: mark syscall number 435 reserved for clone3 · 1a271a68
      由 Christian Brauner 提交于 
      A while ago Arnd made it possible to give new system calls the same
syscall number on all architectures (except alpha). To not break this
nice new feature let's mark 435 for clone3 as reserved on all
architectures that do not yet implement it.
Even if an architecture does not plan to implement it this ensures that
new system calls coming after clone3 will have the same number on all
architectures.
Signed-off-by: NChristian Brauner <christian@brauner.io>
Cc: linux-arch@vger.kernel.org
Cc: linux-alpha@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Cc: linux-ia64@vger.kernel.org
Cc: linux-m68k@lists.linux-m68k.org
Cc: linux-mips@vger.kernel.org
Cc: linux-parisc@vger.kernel.org
Cc: linuxppc-dev@lists.ozlabs.org
Cc: linux-s390@vger.kernel.org
Cc: linux-sh@vger.kernel.org
Cc: sparclinux@vger.kernel.org
Link: https://lore.kernel.org/r/20190714192205.27190-2-christian@brauner.ioReviewed-by: NArnd Bergmann <arnd@arndb.de>
Signed-off-by: NChristian Brauner <christian@brauner.io>
      1a271a68
  7. 13 7月, 2019 3 次提交
  9. 04 7月, 2019 1 次提交
  11. 03 7月, 2019 1 次提交
    • A
      mips/kprobes: Export kprobe_fault_handler() · c9093486
      由 Anshuman Khandual 提交于 
      Generic kprobe_page_fault() calls into kprobe_fault_handler() which must be
available with and without CONFIG_KPROBES. There is one stub implementation
for !CONFIG_KPROBES. For CONFIG_KPROBES all subscribing archs must provide
a kprobe_fault_handler() definition. Currently mips has an implementation
which is defined as 'static inline'. Make it available for generic kprobes
to comply with the above new requirement.

Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Paul Burton <paul.burton@mips.com>
Cc: James Hogan <jhogan@kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: linux-mips@vger.kernel.org
Cc: linux-mm@kvack.org
Reported-by: Nkbuild test robot <lkp@intel.com>
Signed-off-by: NAnshuman Khandual <anshuman.khandual@arm.com>
Signed-off-by: NPaul Burton <paul.burton@mips.com>
Fixes: 773734b44557 ("mm, kprobes: generalize and rename notify_page_fault() as kprobe_page_fault()")
Cc: linux-kernel@vger.kernel.org
      c9093486
  13. 01 7月, 2019 1 次提交
  15. 28 6月, 2019 1 次提交
    • C
      arch: wire-up pidfd_open() · 7615d9e1
      由 Christian Brauner 提交于 
      This wires up the pidfd_open() syscall into all arches at once.
Signed-off-by: NChristian Brauner <christian@brauner.io>
Reviewed-by: NDavid Howells <dhowells@redhat.com>
Reviewed-by: NOleg Nesterov <oleg@redhat.com>
Acked-by: NArnd Bergmann <arnd@arndb.de>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Joel Fernandes (Google) <joel@joelfernandes.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Jann Horn <jannh@google.com>
Cc: Andy Lutomirsky <luto@kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Aleksa Sarai <cyphar@cyphar.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: linux-api@vger.kernel.org
Cc: linux-alpha@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-ia64@vger.kernel.org
Cc: linux-m68k@lists.linux-m68k.org
Cc: linux-mips@vger.kernel.org
Cc: linux-parisc@vger.kernel.org
Cc: linuxppc-dev@lists.ozlabs.org
Cc: linux-s390@vger.kernel.org
Cc: linux-sh@vger.kernel.org
Cc: sparclinux@vger.kernel.org
Cc: linux-xtensa@linux-xtensa.org
Cc: linux-arch@vger.kernel.org
Cc: x86@kernel.org
      7615d9e1
  17. 26 6月, 2019 2 次提交
  19. 25 6月, 2019 15 次提交
    • S
      MIPS: ralink: mt7628a.dtsi: Add watchdog controller DT node · 1bca2eac
      由 Stefan Roese 提交于 
      This patch adds the watchdog controller description to the MT7628A dtsi
file.
Signed-off-by: NStefan Roese <sr@denx.de>
Cc: Paul Burton <paul.burton@mips.com>
Cc: Harvey Hunt <harveyhuntnexus@gmail.com>
Cc: John Crispin <john@phrozen.org>
Signed-off-by: NPaul Burton <paul.burton@mips.com>
Cc: linux-mips@vger.kernel.org
      1bca2eac
    • S
      MIPS: ralink: mt7628a.dtsi: Add SPI controller DT node · 4e41b745
      由 Stefan Roese 提交于 
      This patch adds the SPI controller description to the MT7628A dtsi file.
Signed-off-by: NStefan Roese <sr@denx.de>
Cc: Paul Burton <paul.burton@mips.com>
Cc: Harvey Hunt <harveyhuntnexus@gmail.com>
Cc: John Crispin <john@phrozen.org>
Signed-off-by: NPaul Burton <paul.burton@mips.com>
Cc: linux-mips@vger.kernel.org
      4e41b745
    • S
      MIPS: ralink: mt7628a.dtsi: Add GPIO controller DT node · e456a3bd
      由 Stefan Roese 提交于 
      This patch adds the GPIO controller description to the MT7628A dtsi file.
Signed-off-by: NStefan Roese <sr@denx.de>
Cc: Paul Burton <paul.burton@mips.com>
Cc: Harvey Hunt <harveyhuntnexus@gmail.com>
Cc: John Crispin <john@phrozen.org>
Signed-off-by: NPaul Burton <paul.burton@mips.com>
Cc: linux-mips@vger.kernel.org
      e456a3bd
    • S
      MIPS: ralink: mt7628a.dtsi: Add pinctrl DT properties to the UART nodes · 6394de39
      由 Stefan Roese 提交于 
      Now that pinmux is available, let's use it for the UART DT nodes.
Signed-off-by: NStefan Roese <sr@denx.de>
Cc: Paul Burton <paul.burton@mips.com>
Cc: Harvey Hunt <harveyhuntnexus@gmail.com>
Cc: John Crispin <john@phrozen.org>
Signed-off-by: NPaul Burton <paul.burton@mips.com>
Cc: linux-mips@vger.kernel.org
      6394de39
    • S
      MIPS: ralink: mt7628a.dtsi: Add pinmux DT node · 380f072c
      由 Stefan Roese 提交于 
      This patch adds the pinmux DT node using the generic "pinctrl-single"
pinmux driver. For this the system-controller register area needs to be
changed to not overlap with the pinmux registers.

This patch is based on work done by John Crispin.
Signed-off-by: NStefan Roese <sr@denx.de>
Cc: Paul Burton <paul.burton@mips.com>
Cc: Harvey Hunt <harveyhuntnexus@gmail.com>
Cc: John Crispin <john@phrozen.org>
Signed-off-by: NPaul Burton <paul.burton@mips.com>
Cc: linux-mips@vger.kernel.org
      380f072c
    • S
      MIPS: ralink: mt7628a.dtsi: Add SPDX GPL-2.0 license identifier · 9ea34af7
      由 Stefan Roese 提交于 
      As done in commit b2441318 ("License cleanup: add SPDX GPL-2.0
license identifier to files with no license"), this patch adds the SPDX
license identifier to mt7628a.dtsi, which is currently still missing
this identifier.
Signed-off-by: NStefan Roese <sr@denx.de>
Cc: Paul Burton <paul.burton@mips.com>
Cc: Harvey Hunt <harveyhuntnexus@gmail.com>
Cc: John Crispin <john@phrozen.org>
Signed-off-by: NPaul Burton <paul.burton@mips.com>
Cc: linux-mips@vger.kernel.org
      9ea34af7
    • P
      MIPS: lantiq: Add SMP support for lantiq interrupt controller · 85cf2c37
      由 Petr Cvek 提交于 
      Some lantiq devices have two ICU controllers. The IRQ signal is routed
to both of them and user can chose which ICU will resend the IRQ to their
respective VPE. The patch adds the support for the second ICU.

The patch changes a register definition of the driver. Instead of an
individual IM, the whole ICU is defined. This will only affects openwrt
patched kernel (vanilla doesn't have additional .dts files).

Also spinlocks has been added, both cores can RMW different bitfields
in the same register. Added affinity set function. The new VPE cpumask
will take into the action at the irq enable.

The functionality was tested on 4.14 openwrt kernel and TP-W9980B modem.
Signed-off-by: NPetr Cvek <petrcvekcz@gmail.com>
Signed-off-by: NPaul Burton <paul.burton@mips.com>
Cc: hauke@hauke-m.de
Cc: john@phrozen.org
Cc: linux-mips@vger.kernel.org
Cc: openwrt-devel@lists.openwrt.org
Cc: pakahmar@hotmail.com
      85cf2c37
    • P
      MIPS: lantiq: Shorten register names, remove unused macros · f0dd3001
      由 Petr Cvek 提交于 
      The macros LTQ_ICU_IM1_ISR and LTQ_ICU_OFFSET seems to be unused, remove
them. Allong with that, remove _IM0 substring from the macro names. The
IM (interrupt module) is already defined in IOMEM access and IM0 would be
misleading.
Signed-off-by: NPetr Cvek <petrcvekcz@gmail.com>
Signed-off-by: NPaul Burton <paul.burton@mips.com>
Cc: hauke@hauke-m.de
Cc: john@phrozen.org
Cc: linux-mips@vger.kernel.org
Cc: openwrt-devel@lists.openwrt.org
Cc: pakahmar@hotmail.com
      f0dd3001
    • P
      MIPS: lantiq: Fix bitfield masking · ba1bc0fc
      由 Petr Cvek 提交于 
      The modification of EXIN register doesn't clean the bitfield before
the writing of a new value. After a few modifications the bitfield would
accumulate only '1's.
Signed-off-by: NPetr Cvek <petrcvekcz@gmail.com>
Signed-off-by: NPaul Burton <paul.burton@mips.com>
Cc: hauke@hauke-m.de
Cc: john@phrozen.org
Cc: linux-mips@vger.kernel.org
Cc: openwrt-devel@lists.openwrt.org
Cc: pakahmar@hotmail.com
      ba1bc0fc
    • P
      MIPS: lantiq: Remove unused macros · 7c6747bc
      由 Petr Cvek 提交于 
      The last use of both macros was in 4.11.
Signed-off-by: NPetr Cvek <petrcvekcz@gmail.com>
Signed-off-by: NPaul Burton <paul.burton@mips.com>
Cc: hauke@hauke-m.de
Cc: john@phrozen.org
Cc: linux-mips@vger.kernel.org
Cc: openwrt-devel@lists.openwrt.org
Cc: pakahmar@hotmail.com
      7c6747bc
    • P
      MIPS: lantiq: Fix attributes of of_device_id structure · 64a95283
      由 Petr Cvek 提交于 
      According to the checkpatch the driver structure of_device_id requires
to be const and with attribute __initconst. Change it accordingly.
Signed-off-by: NPetr Cvek <petrcvekcz@gmail.com>
Signed-off-by: NPaul Burton <paul.burton@mips.com>
Cc: hauke@hauke-m.de
Cc: john@phrozen.org
Cc: linux-mips@vger.kernel.org
Cc: openwrt-devel@lists.openwrt.org
Cc: pakahmar@hotmail.com
      64a95283
    • P
      MIPS: lantiq: Change variables to the same type as the source · 39588164
      由 Petr Cvek 提交于 
      A structure irq_data, irq_desc_get_irq() and irq_linear_revmap() use
a different type than defined in the lantiq ICU driver, which is using
signed integers. The substracted result should never be negative nor is
tested for that situation. Change it to unsigned.
Signed-off-by: NPetr Cvek <petrcvekcz@gmail.com>
Signed-off-by: NPaul Burton <paul.burton@mips.com>
Cc: hauke@hauke-m.de
Cc: john@phrozen.org
Cc: linux-mips@vger.kernel.org
Cc: openwrt-devel@lists.openwrt.org
Cc: pakahmar@hotmail.com
      39588164
    • P
      MIPS: lantiq: Move macro directly to iomem function · aa0f58b4
      由 Petr Cvek 提交于 
      Using the variable as a temporary holder for the macro of the register
offset value is not necessary. Move it directly to the IOMEM read/write
call.
Signed-off-by: NPetr Cvek <petrcvekcz@gmail.com>
Signed-off-by: NPaul Burton <paul.burton@mips.com>
Cc: hauke@hauke-m.de
Cc: john@phrozen.org
Cc: linux-mips@vger.kernel.org
Cc: openwrt-devel@lists.openwrt.org
Cc: pakahmar@hotmail.com
      aa0f58b4
    • S
      mips: Remove q-accessors from non-64bit platforms · 1e279144
      由 Serge Semin 提交于 
      There are some generic drivers in the kernel, which make use of the
q-accessors or their derivatives. While at current asm/io.h the accessors
are defined, their implementation is only applicable either for 64bit
systems, or for systems with cpu_has_64bits flag set. Obviously there
are MIPS systems which are neither of these, but still need to have
those drivers supported. In this case the solution is to define some
generic versions of the q-accessors, but with a limitation to be
non-atomic. Such accessors are defined in the
io-64-nonatomic-{hi-lo,lo-hi}.h file. The drivers which utilize the
q-suffixed IO-methods are supposed to include the header file, so
in case if these accessors aren't defined for the platform, the generic
non-atomic versions are utilized. Currently the MIPS-specific asm/io.h
file provides the q-accessors for any MIPS system even for ones, which
in fact don't support them and raise BUG() in case if any of them is
called. Due to this the generic versions of the accessors are never
used while an attempt to call the IO-methods causes the kernel BUG().
In order to fix this we need to define the q-accessors only for
the MIPS systems, which actually support them, and don't define them
otherwise, so to let the corresponding drivers to use the non-atomic
q-suffixed accessors.
Signed-off-by: NSerge Semin <fancer.lancer@gmail.com>
Suggested-by: NArnd Bergmann <arnd@arndb.de>
Cc: Vadim V. Vlasov <vadim.vlasov@t-platforms.ru>
Signed-off-by: NPaul Burton <paul.burton@mips.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: James Hogan <jhogan@kernel.org>
Cc: Serge Semin <Sergey.Semin@t-platforms.ru>
Cc: linux-mips@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
      1e279144
    • D
      MIPS: Add missing EHB in mtc0 -> mfc0 sequence. · 0b24cae4
      由 Dmitry Korotin 提交于 
      Add a missing EHB (Execution Hazard Barrier) in mtc0 -> mfc0 sequence.
Without this execution hazard barrier it's possible for the value read
back from the KScratch register to be the value from before the mtc0.

Reproducible on P5600 & P6600.

The hazard is documented in the MIPS Architecture Reference Manual Vol.
III: MIPS32/microMIPS32 Privileged Resource Architecture (MD00088), rev
6.03 table 8.1 which includes:

   Producer | Consumer | Hazard
  ----------|----------|----------------------------
   mtc0     | mfc0     | any coprocessor 0 register
Signed-off-by: NDmitry Korotin <dkorotin@wavecomp.com>
[paul.burton@mips.com:
  - Commit message tweaks.
  - Add Fixes tags.
  - Mark for stable back to v3.15 where P5600 support was introduced.]
Signed-off-by: NPaul Burton <paul.burton@mips.com>
Fixes: 3d8bfdd0 ("MIPS: Use C0_KScratch (if present) to hold PGD pointer.")
Fixes: 829dcc0a ("MIPS: Add MIPS P5600 probe support")
Cc: linux-mips@vger.kernel.org
Cc: stable@vger.kernel.org # v3.15+
      0b24cae4
  21. 21 6月, 2019 1 次提交
  23. 20 6月, 2019 2 次提交
  25. 19 6月, 2019 4 次提交
  27. 17 6月, 2019 1 次提交
    • H
      MIPS: Fix bounds check virt_addr_valid · d6ed083f
      由 Hauke Mehrtens 提交于 
      The bounds check used the uninitialized variable vaddr, it should use
the given parameter kaddr instead. When using the uninitialized value
the compiler assumed it to be 0 and optimized this function to just
return 0 in all cases.

This should make the function check the range of the given address and
only do the page map check in case it is in the expected range of
virtual addresses.

Fixes: 074a1e11 ("MIPS: Bounds check virt_addr_valid")
Cc: stable@vger.kernel.org # v4.12+
Cc: Paul Burton <paul.burton@mips.com>
Signed-off-by: NHauke Mehrtens <hauke@hauke-m.de>
Signed-off-by: NPaul Burton <paul.burton@mips.com>
Cc: ralf@linux-mips.org
Cc: jhogan@kernel.org
Cc: f4bug@amsat.org
Cc: linux-mips@vger.kernel.org
Cc: ysu@wavecomp.com
Cc: jcristau@debian.org
      d6ed083f
  29. 16 6月, 2019 1 次提交