git.rot13.org Git - linux/log

xtensa: simplify trap_init

Drop redundant 'fast &&' condition from the exception handler assignment
loop.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>

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Max Filippov [Wed, 2 Jan 2019 10:03:39 +0000 (02:03 -0800)]

xtensa: drop unused definitions

drop the following unused definitions:
- TS_USEDFPU from arch/xtensa/include/asm/thread_info.h
- current_set from arch/xtensa/kernel/process.c

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>

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Max Filippov [Wed, 2 Jan 2019 09:08:32 +0000 (01:08 -0800)]

xtensa: fix get_wchan

Stack unwinding is implemented incorrectly in xtensa get_wchan: instead
of extracting a0 and a1 registers from the spill location under the
stack pointer it extracts a word pointed to by the stack pointer and
subtracts 4 or 3 from it.

Cc: stable@vger.kernel.org
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>

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Max Filippov [Tue, 1 Jan 2019 22:08:32 +0000 (14:08 -0800)]

xtensa: use generic spinlock/rwlock implementation

Drop custom spinlock/rwlock code and use ones from asm-generic. This way
there is less code duplication (atomic primitives are reused).

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>

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Max Filippov [Wed, 2 Jan 2019 03:29:07 +0000 (19:29 -0800)]

xtensa: provide xchg for sizes 1 and 2

This is required for generic queued spinlocks, implement it.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>

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Max Filippov [Thu, 24 Jan 2019 23:09:21 +0000 (15:09 -0800)]

xtensa: clean up arch/xtensa/kernel/time.c

- move all constant assignments from local_timer_setup to the definition
of ccount_timer to make it mostly statically initialized;
- drop local function declarations, reorder functions and variables that
reference them.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>

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Max Filippov [Sat, 19 Jan 2019 02:45:17 +0000 (18:45 -0800)]

xtensa: SMP: rework IPI processing

Don't skip current CPU in send_ipi_message: callers of this function
take care of it and it's harmless anyway.
Don't clear IPI bits one by one, clear all that were read at once.
Check IPI register in a loop in case new IPI was posted while previous
was being handled.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>

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Vladimir Kondratiev [Wed, 6 Feb 2019 11:46:17 +0000 (13:46 +0200)]

mips: cm: reprime error cause

Accordingly to the documentation
---cut---
The GCR_ERROR_CAUSE.ERR_TYPE field and the GCR_ERROR_MULT.ERR_TYPE
fields can be cleared by either a reset or by writing the current
value of GCR_ERROR_CAUSE.ERR_TYPE to the
GCR_ERROR_CAUSE.ERR_TYPE register.
---cut---
Do exactly this. Original value of cm_error may be safely written back;
it clears error cause and keeps other bits untouched.

Fixes: 3885c2b463f6 ("MIPS: CM: Add support for reporting CM cache errors")
Signed-off-by: Vladimir Kondratiev <vladimir.kondratiev@linux.intel.com>
Signed-off-by: Paul Burton <paul.burton@mips.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: James Hogan <jhogan@kernel.org>
Cc: linux-mips@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Cc: stable@vger.kernel.org # v4.3+

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Yifeng Li [Wed, 6 Feb 2019 07:07:21 +0000 (15:07 +0800)]

mips: loongson64: remove unreachable(), fix loongson_poweroff().

On my Yeeloong 8089, I noticed the machine fails to shutdown
properly, and often, the function mach_prepare_reboot() is
unexpectedly executed, thus the machine reboots instead. A
wait loop is needed to ensure the system is in a well-defined
state before going down.

In commit 997e93d4df16 ("MIPS: Hang more efficiently on
halt/powerdown/restart"), a general superset of the wait loop for all
platforms is already provided, so we don't need to implement our own.

This commit simply removes the unreachable() compiler marco after
mach_prepare_reboot(), thus allowing the execution of machine_hang().
My test shows that the machine is now able to shutdown successfully.

Please note that there are two different bugs preventing the machine
from shutting down, another work-in-progress commit is needed to
fix a lockup in cpufreq / i8259 driver, please read Reference, this
commit does not fix that bug.

Reference: https://lkml.org/lkml/2019/2/5/908
Signed-off-by: Yifeng Li <tomli@tomli.me>
Signed-off-by: Paul Burton <paul.burton@mips.com>
Cc: linux-mips@vger.kernel.org
Cc: Huacai Chen <chenhc@lemote.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: James Hogan <jhogan@kernel.org>
Cc: linux-kernel@vger.kernel.org
Cc: Aaro Koskinen <aaro.koskinen@iki.fi>
Cc: stable@vger.kernel.org # v4.17+

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Manuel Reinhardt [Thu, 31 Jan 2019 14:32:35 +0000 (15:32 +0100)]

ALSA: usb-audio: Fix implicit fb endpoint setup by quirk

The commit a60945fd08e4 ("ALSA: usb-audio: move implicit fb quirks to
separate function") introduced an error in the handling of quirks for
implicit feedback endpoints. This commit fixes this.

If a quirk successfully sets up an implicit feedback endpoint, usb-audio
no longer tries to find the implicit fb endpoint itself.

Fixes: a60945fd08e4 ("ALSA: usb-audio: move implicit fb quirks to separate function")
Signed-off-by: Manuel Reinhardt <manuel.rhdt@gmail.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

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David S. Miller [Thu, 7 Feb 2019 18:48:42 +0000 (10:48 -0800)]

Merge branch 'ipv6-fixes'

Hangbin Liu says:

====================
fix two kernel panics when disabled IPv6 on boot up

When disabled IPv6 on boot up, since there is no ipv6 route tables, we should
not call rt6_lookup. Fix them by checking if we have inet6_dev pointer on
netdevice.

v2: Fix idev reference leak, declarations and code mixing as Stefano,
Eric pointed. Since we only want to check if idev exists and not
reference it, use __in6_dev_get() insteand of in6_dev_get().
====================

Signed-off-by: David S. Miller <davem@davemloft.net>

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Hangbin Liu [Thu, 7 Feb 2019 10:36:11 +0000 (18:36 +0800)]

sit: check if IPv6 enabled before calling ip6_err_gen_icmpv6_unreach()

If we disabled IPv6 from the kernel command line (ipv6.disable=1), we should
not call ip6_err_gen_icmpv6_unreach(). This:

  ip link add sit1 type sit local 192.0.2.1 remote 192.0.2.2 ttl 1
  ip link set sit1 up
  ip addr add 198.51.100.1/24 dev sit1
  ping 198.51.100.2

if IPv6 is disabled at boot time, will crash the kernel.

v2: there's no need to use in6_dev_get(), use __in6_dev_get() instead,
    as we only need to check that idev exists and we are under
    rcu_read_lock() (from netif_receive_skb_internal()).

Reported-by: Jianlin Shi <jishi@redhat.com>
Fixes: ca15a078bd90 ("sit: generate icmpv6 error when receiving icmpv4 error")
Cc: Oussama Ghorbel <ghorbel@pivasoftware.com>
Signed-off-by: Hangbin Liu <liuhangbin@gmail.com>
Reviewed-by: Stefano Brivio <sbrivio@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Hangbin Liu [Thu, 7 Feb 2019 10:36:10 +0000 (18:36 +0800)]

geneve: should not call rt6_lookup() when ipv6 was disabled

When we add a new GENEVE device with IPv6 remote, checking only for
IS_ENABLED(CONFIG_IPV6) is not enough as we may disable IPv6 in the
kernel command line (ipv6.disable=1), and calling rt6_lookup() would
cause a NULL pointer dereference.

v2:
- don't mix declarations and code (reported by Stefano Brivio, Eric Dumazet)
- there's no need to use in6_dev_get() as we only need to check that
idev exists (reported by David Ahern). This is under RTNL, so we can
simply use __in6_dev_get() instead (Stefano, Eric).

Reported-by: Jianlin Shi <jishi@redhat.com>
Fixes: c40e89fd358e9 ("geneve: configure MTU based on a lower device")
Cc: Alexey Kodanev <alexey.kodanev@oracle.com>
Signed-off-by: Hangbin Liu <liuhangbin@gmail.com>
Reviewed-by: Stefano Brivio <sbrivio@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Thierry Reding [Thu, 7 Feb 2019 18:04:48 +0000 (19:04 +0100)]

Merge branch for-5.1/arm64/defconfig into for-next

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Thierry Reding [Thu, 7 Feb 2019 18:04:48 +0000 (19:04 +0100)]

Merge branch for-5.1/arm64/dt into for-next

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Thierry Reding [Thu, 7 Feb 2019 18:04:48 +0000 (19:04 +0100)]

Merge branch for-5.1/arm/dt into for-next

commit | commitdiff | tree

Thierry Reding [Thu, 7 Feb 2019 18:04:47 +0000 (19:04 +0100)]

Merge branch for-5.1/arm/core into for-next

commit | commitdiff | tree

Thierry Reding [Thu, 7 Feb 2019 18:04:47 +0000 (19:04 +0100)]

Merge branch for-5.1/firmware into for-next

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Thierry Reding [Thu, 7 Feb 2019 18:04:47 +0000 (19:04 +0100)]

Merge branch for-5.1/soc into for-next

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Thierry Reding [Thu, 7 Feb 2019 18:04:46 +0000 (19:04 +0100)]

Merge branch for-5.1/dt-bindings into for-next

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Thierry Reding [Thu, 7 Feb 2019 18:04:46 +0000 (19:04 +0100)]

Merge branch for-5.1/cpufreq into for-next

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Thierry Reding [Thu, 7 Feb 2019 18:04:45 +0000 (19:04 +0100)]

Merge branch for-5.1/clk into for-next

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Sowjanya Komatineni [Tue, 18 Dec 2018 22:40:56 +0000 (14:40 -0800)]

arm64: tegra: Update compatible for Tegra186 I2C

Update I2C Device node compatible string to be appropriate.

Signed-off-by: Sowjanya Komatineni <skomatineni@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>

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Sowjanya Komatineni [Tue, 18 Dec 2018 22:37:04 +0000 (14:37 -0800)]

arm64: tegra: Update compatible for Tegra210 I2C

Update I2C device node compatible string to be appropriate.

Signed-off-by: Sowjanya Komatineni <skomatineni@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>

Unnamed repository; edit this file 'description' to name the repository.

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