Commit graph

932,869 commits

Author SHA1 Message Date
Stephan Gerhold
039287aa9f Bluetooth: btbcm: Add entry for BCM2076B1 UART Bluetooth
Add the device ID for the BT/FM/GPS combo chip BCM2076 (rev B1)
used in the AMPAK AP6476 WiFi/BT/FM/GPS module.

Signed-off-by: Stephan Gerhold <stephan@gerhold.net>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2019-04-23 19:10:56 +02:00
Dan Carpenter
f57c4bbf34 6lowpan: Off by one handling ->nexthdr
NEXTHDR_MAX is 255.  What happens here is that we take a u8 value
"hdr->nexthdr" from the network and then look it up in
lowpan_nexthdr_nhcs[].  The problem is that if hdr->nexthdr is 0xff then
we read one element beyond the end of the array so the array needs to
be one element larger.

Fixes: 92aa7c65d2 ("6lowpan: add generic nhc layer interface")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Acked-by: Alexander Aring <aring@mojatatu.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2019-04-23 19:09:58 +02:00
Andrey Grodzovsky
f83088981a drm/amd/display: Use a reasonable timeout for framebuffer fence waits
Patch '5edb0c9b Fix deadlock with display during hanged ring recovery'
was accidentaly removed during one of DALs code merges.

Signed-off-by: Andrey Grodzovsky <andrey.grodzovsky@amd.com>
Reviewed-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-04-23 12:09:26 -05:00
Christian König
2fac0f53fe drm/amd/display: wait for fence without holding reservation lock
Don't block others while waiting for the fences to finish, concurrent
submission is perfectly valid in this case and holding the lock can
prevent killed applications from terminating.

Signed-off-by: Christian König <ckoenig.leichtzumerken@gmail.com>
Reviewed-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-04-23 12:09:26 -05:00
Andrey Grodzovsky
77e7f82985 drm/amdgpu: Change VRAM lost print from ERR to INF
It's normal for VRAM to lost during GPU reset and so change
the log level to INFO to avoid confusing users.

Signed-off-by: Andrey Grodzovsky <andrey.grodzovsky@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-04-23 12:09:26 -05:00
Chengming Gui
8d01071d26 drm/amd/powerplay: enable UMDPSTATE support on raven2 (v2)
enable UMDPSTATE support to force performance level for raven2.

v2: squash in warning fix (Alex)

Signed-off-by: Chengming Gui <Jack.Gui@amd.com>
Reviewed-by: Huang Rui <ray.huang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-04-23 12:09:14 -05:00
Chengming Gui
45516e91c2 drm/amd/powerplay: add set/get_power_profile_mode for Raven (v2)
The power profile allows the user to adjust the power state
heuristics for clock level transitions.

v2: squash in warning fix (Alex)

Reviewed-by: Evan Quan <evan.quan@amd.com>
Reviewed-by: Huang Rui <ray.huang@amd.com>
Signed-off-by: Chengming Gui <Jack.Gui@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-04-23 12:08:48 -05:00
Ferry Toth
5035726128 Bluetooth: btbcm: Add default address for BCM43341B
The BCM43341B has the default MAC address 43:34:1B:00:1F:AC if none
is given. This address was found when enabling Bluetooth on multiple
Intel Edison modules. It also contains the sequence 43341B, the name
the chip identifies itself as. Using the same BD_ADDR is problematic
when having multiple Intel Edison modules in each others range.
The default address also has the LAA (locally administered address)
bit set which prevents a BNEP device from being created, needed for
BT tethering.

Add this to the list of black listed default MAC addresses and let
the user configure a valid one using f.i.
`btmgmt -i hci0 public-addr xx:xx:xx:xx:xx:xx`

Suggested-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Ferry Toth <ftoth@exalondelft.nl>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2019-04-23 19:08:16 +02:00
Young Xiao
a1616a5ac9 Bluetooth: hidp: fix buffer overflow
Struct ca is copied from userspace. It is not checked whether the "name"
field is NULL terminated, which allows local users to obtain potentially
sensitive information from kernel stack memory, via a HIDPCONNADD command.

This vulnerability is similar to CVE-2011-1079.

Signed-off-by: Young Xiao <YangX92@hotmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Cc: stable@vger.kernel.org
2019-04-23 19:04:38 +02:00
Dave Martin
06a916feca arm64: Expose SVE2 features for userspace
This patch provides support for reporting the presence of SVE2 and
its optional features to userspace.

This will also enable visibility of SVE2 for guests, when KVM
support for SVE-enabled guests is available.

Signed-off-by: Dave Martin <Dave.Martin@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
2019-04-23 18:02:00 +01:00
Will Deacon
dd523791c9 arm64: Kconfig: Make CONFIG_COMPAT a menuconfig entry
Make CONFIG_COMPAT a menuconfig entry so that we can place
CONFIG_KUSER_HELPERS and CONFIG_ARMV8_DEPRECATED underneath it.

Signed-off-by: Will Deacon <will.deacon@arm.com>
2019-04-23 18:01:59 +01:00
Vincenzo Frascino
af1b3cf2c2 arm64: compat: Add KUSER_HELPERS config option
When kuser helpers are enabled the kernel maps the relative code at
a fixed address (0xffff0000). Making configurable the option to disable
them means that the kernel can remove this mapping and any access to
this memory area results in a sigfault.

Add a KUSER_HELPERS config option that can be used to disable the
mapping when it is turned off.

This option can be turned off if and only if the applications are
designed specifically for the platform and they do not make use of the
kuser helpers code.

Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Signed-off-by: Vincenzo Frascino <vincenzo.frascino@arm.com>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
[will: Use IS_ENABLED() instead of #ifdef]
Signed-off-by: Will Deacon <will.deacon@arm.com>
2019-04-23 18:01:58 +01:00
Vincenzo Frascino
1255a7341b arm64: compat: Refactor aarch32_alloc_vdso_pages()
aarch32_alloc_vdso_pages() needs to be refactored to make it
easier to disable kuser helpers.

Divide the function in aarch32_alloc_kuser_vdso_page() and
aarch32_alloc_sigreturn_vdso_page().

Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Signed-off-by: Vincenzo Frascino <vincenzo.frascino@arm.com>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
[will: Inlined sigpage allocation to simplify error paths]
Signed-off-by: Will Deacon <will.deacon@arm.com>
2019-04-23 18:01:58 +01:00
Vincenzo Frascino
d1e5ca64d5 arm64: compat: Split kuser32
To make it possible to disable kuser helpers in aarch32 we need to
divide the kuser and the sigreturn functionalities.

Split the current version of kuser32 in kuser32 (for kuser helpers)
and sigreturn32 (for sigreturn helpers).

Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Signed-off-by: Vincenzo Frascino <vincenzo.frascino@arm.com>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
2019-04-23 18:01:57 +01:00
Tamás Szűcs
7362334054 Bluetooth: btmrvl: add support for SD8987 chipset
This patch adds support for Marvell 88W8987 chipset with SDIO interface.
Register offsets and supported feature flags are updated. The corresponding
firmware image file shall be "mrvl/sd8987_uapsta.bin".

Signed-off-by: Tamás Szűcs <tszucs@protonmail.ch>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2019-04-23 19:01:45 +02:00
Vincenzo Frascino
0d747f6585 arm64: compat: Alloc separate pages for vectors and sigpage
For AArch32 tasks, we install a special "[vectors]" page that contains
the sigreturn trampolines and kuser helpers, which is mapped at a fixed
address specified by the kuser helpers ABI.

Having the sigreturn trampolines in the same page as the kuser helpers
makes it impossible to disable the kuser helpers independently.

Follow the Arm implementation, by moving the signal trampolines out of
the "[vectors]" page and into their own "[sigpage]".

Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Signed-off-by: Vincenzo Frascino <vincenzo.frascino@arm.com>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
[will: tweaked comments and fixed sparse warning]
Signed-off-by: Will Deacon <will.deacon@arm.com>
2019-04-23 18:01:31 +01:00
Daniel Borkmann
2aad32613c Merge branch 'bpf-eth-get-headlen'
Stanislav Fomichev says:

====================
Currently, when eth_get_headlen calls flow dissector, it doesn't pass any
skb. Because we use passed skb to lookup associated networking namespace
to find whether we have a BPF program attached or not, we always use
C-based flow dissector in this case.

The goal of this patch series is to add new networking namespace argument
to the eth_get_headlen and make BPF flow dissector programs be able to
work in the skb-less case.

The series goes like this:
* use new kernel context (struct bpf_flow_dissector) for flow dissector
  programs; this makes it easy to distinguish between skb and no-skb
  case and supports calling BPF flow dissector on a chunk of raw data
* convert BPF_PROG_TEST_RUN to use raw data
* plumb network namespace into __skb_flow_dissect from all callers
* handle no-skb case in __skb_flow_dissect
* update eth_get_headlen to include net namespace argument and
  convert all existing users
* add selftest to make sure bpf_skb_load_bytes is not allowed in
  the no-skb mode
* extend test_progs to exercise skb-less flow dissection as well
* stop adjusting nhoff/thoff by ETH_HLEN in BPF_PROG_TEST_RUN

v6:
* more suggestions by Alexei:
  * eth_get_headlen now takes net dev, not net namespace
  * test skb-less case via tun eth_get_headlen
* fix return errors in bpf_flow_load
* don't adjust nhoff/thoff by ETH_HLEN

v5:
* API changes have been submitted via bpf/stable tree

v4:
* prohibit access to vlan fields as well (otherwise, inconsistent
  between skb/skb-less cases)
* drop extra unneeded check for skb->vlan_present in bpf_flow.c

v3:
* new kernel xdp_buff-like context per Alexei suggestion
* drop skb_net helper
* properly clamp flow_keys->nhoff

v2:
* moved temporary skb from stack into percpu (avoids memset of ~200 bytes
  per packet)
* tightened down access to __sk_buff fields from flow dissector programs to
  avoid touching shinfo (whitelist only relevant fields)
* addressed suggestions from Willem
====================

Acked-by: Eric Dumazet <edumazet@google.com>
Acked-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2019-04-23 18:36:36 +02:00
Stanislav Fomichev
02ee065836 bpf/flow_dissector: don't adjust nhoff by ETH_HLEN in BPF_PROG_TEST_RUN
Now that we use skb-less flow dissector let's return true nhoff and
thoff. We used to adjust them by ETH_HLEN because that's how it was
done in the skb case. For VLAN tests that looks confusing: nhoff is
pointing to vlan parts :-\

Warning, this is an API change for BPF_PROG_TEST_RUN! Feel free to drop
if you think that it's too late at this point to fix it.

Signed-off-by: Stanislav Fomichev <sdf@google.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2019-04-23 18:36:35 +02:00
Stanislav Fomichev
fe993c6468 selftests/bpf: properly return error from bpf_flow_load
Right now we incorrectly return 'ret' which is always zero at that
point.

Signed-off-by: Stanislav Fomichev <sdf@google.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2019-04-23 18:36:34 +02:00
Stanislav Fomichev
0905beec9f selftests/bpf: run flow dissector tests in skb-less mode
Export last_dissection map from flow dissector and use a known place in
tun driver to trigger BPF flow dissection.

Signed-off-by: Stanislav Fomichev <sdf@google.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2019-04-23 18:36:34 +02:00
Stanislav Fomichev
c9cb2c1e11 selftests/bpf: add flow dissector bpf_skb_load_bytes helper test
When flow dissector is called without skb, we want to make sure
bpf_skb_load_bytes invocations return error. Add small test which tries
to read single byte from a packet.

bpf_skb_load_bytes should always fail under BPF_PROG_TEST_RUN because
it was converted to the skb-less mode.

Signed-off-by: Stanislav Fomichev <sdf@google.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2019-04-23 18:36:34 +02:00
Stanislav Fomichev
c43f1255b8 net: pass net_device argument to the eth_get_headlen
Update all users of eth_get_headlen to pass network device, fetch
network namespace from it and pass it down to the flow dissector.
This commit is a noop until administrator inserts BPF flow dissector
program.

Cc: Maxim Krasnyansky <maxk@qti.qualcomm.com>
Cc: Saeed Mahameed <saeedm@mellanox.com>
Cc: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Cc: intel-wired-lan@lists.osuosl.org
Cc: Yisen Zhuang <yisen.zhuang@huawei.com>
Cc: Salil Mehta <salil.mehta@huawei.com>
Cc: Michael Chan <michael.chan@broadcom.com>
Cc: Igor Russkikh <igor.russkikh@aquantia.com>
Signed-off-by: Stanislav Fomichev <sdf@google.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2019-04-23 18:36:34 +02:00
Stanislav Fomichev
9b52e3f267 flow_dissector: handle no-skb use case
When called without skb, gather all required data from the
__skb_flow_dissect's arguments and use recently introduces
no-skb mode of bpf flow dissector.

Note: WARN_ON_ONCE(!net) will now trigger for eth_get_headlen users.

Signed-off-by: Stanislav Fomichev <sdf@google.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2019-04-23 18:36:34 +02:00
Stanislav Fomichev
3cbf4ffba5 net: plumb network namespace into __skb_flow_dissect
This new argument will be used in the next patches for the
eth_get_headlen use case. eth_get_headlen calls flow dissector
with only data (without skb) so there is currently no way to
pull attached BPF flow dissector program. With this new argument,
we can amend the callers to explicitly pass network namespace
so we can use attached BPF program.

Signed-off-by: Stanislav Fomichev <sdf@google.com>
Reviewed-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2019-04-23 18:36:34 +02:00
Stanislav Fomichev
7b8a130432 bpf: when doing BPF_PROG_TEST_RUN for flow dissector use no-skb mode
Now that we have bpf_flow_dissect which can work on raw data,
use it when doing BPF_PROG_TEST_RUN for flow dissector.

Simplifies bpf_prog_test_run_flow_dissector and allows us to
test no-skb mode.

Note, that previously, with bpf_flow_dissect_skb we used to call
eth_type_trans which pulled L2 (ETH_HLEN) header and we explicitly called
skb_reset_network_header. That means flow_keys->nhoff would be
initialized to 0 (skb_network_offset) in init_flow_keys.
Now we call bpf_flow_dissect with nhoff set to ETH_HLEN and need
to undo it once the dissection is done to preserve the existing behavior.

Signed-off-by: Stanislav Fomichev <sdf@google.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2019-04-23 18:36:34 +02:00
Stanislav Fomichev
089b19a920 flow_dissector: switch kernel context to struct bpf_flow_dissector
struct bpf_flow_dissector has a small subset of sk_buff fields that
flow dissector BPF program is allowed to access and an optional
pointer to real skb. Real skb is used only in bpf_skb_load_bytes
helper to read non-linear data.

The real motivation for this is to be able to call flow dissector
from eth_get_headlen context where we don't have an skb and need
to dissect raw bytes.

Signed-off-by: Stanislav Fomichev <sdf@google.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2019-04-23 18:36:33 +02:00
Sean Wang
7f3c563c57 Bluetooth: btmtksdio: Add runtime PM support to SDIO based Bluetooth
Add runtime PM support to btmtksdio. With this way, there will be the
benefit of the device entering the more power saving state once it is
been a while data traffic is idle.

Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2019-04-23 18:36:20 +02:00
Sean Wang
bcaa7d72df Bluetooth: btmtksdio: Fix hdev->stat.byte_rx accumulation
Accumulate hdev->stat.byte_rx only for valid packets as btmtkuart doing.

Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2019-04-23 18:36:20 +02:00
Sean Wang
2e47cc2b3a Bluetooth: btmtksdio: Add a bit definition for CHLPCR
Add a register bit definition about CHLPCR bit 8 because the bit is quite
different in the meaning between reading and writing that bit.

The patch adds a definition particularly for the bit read to avoid the
confusion about using write definition to read the bit.

Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2019-04-23 18:36:20 +02:00
Sean Wang
e1052fb282 Bluetooth: btmtksdio: Drop newline with bt_dev logging macros
bt_dev logging macros already include a newline at each output
so drop these unnecessary additional newlines in the driver.

Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2019-04-23 18:36:20 +02:00
Ville Syrjälä
372b9ffb57 drm/i915: Fix skl+ max plane width
The spec has changed since skl_max_plane_width() was written.
Now the SKL limits are lower than what they were initially, and
GLK and ICL have different limits. Update the code to match the
spec.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190418195907.23912-1-ville.syrjala@linux.intel.com
Reviewed-by: José Roberto de Souza <jose.souza@intel.com>
2019-04-23 19:34:51 +03:00
Ard Biesheuvel
e17b1af96b ARM: 8857/1: efi: enable CP15 DMB instructions before cleaning the cache
The EFI stub is entered with the caches and MMU enabled by the
firmware, and once the stub is ready to hand over to the decompressor,
we clean and disable the caches.

The cache clean routines use CP15 barrier instructions, which can be
disabled via SCTLR. Normally, when using the provided cache handling
routines to enable the caches and MMU, this bit is enabled as well.
However, but since we entered the stub with the caches already enabled,
this routine is not executed before we call the cache clean routines,
resulting in undefined instruction exceptions if the firmware never
enabled this bit.

So set the bit explicitly in the EFI entry code, but do so in a way that
guarantees that the resulting code can still run on v6 cores as well
(which are guaranteed to have CP15 barriers enabled)

Cc: <stable@vger.kernel.org> # v4.9+
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
2019-04-23 17:28:37 +01:00
Tigran Tadevosyan
c314396780 ARM: 8856/1: NOMMU: Fix CCR register faulty initialization when MPU is disabled
When CONFIG_ARM_MPU is not defined, the base address of v7M SCB register
is not initialized with correct value. This prevents enabling I/D caches
when the L1 cache poilcy is applied in kernel.

Fixes: 3c24121039 ("ARM: 8756/1: NOMMU: Postpone MPU activation till __after_proc_init")
Signed-off-by: Tigran Tadevosyan <tigran.tadevosyan@arm.com>
Signed-off-by: Vladimir Murzin <vladimir.murzin@arm.com>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
2019-04-23 17:28:37 +01:00
Russell King
503621628b ARM: fix function graph tracer and unwinder dependencies
Naresh Kamboju recently reported that the function-graph tracer crashes
on ARM. The function-graph tracer assumes that the kernel is built with
frame pointers.

We explicitly disabled the function-graph tracer when building Thumb2,
since the Thumb2 ABI doesn't have frame pointers.

We recently changed the way the unwinder method was selected, which
seems to have made it more likely that we can end up with the function-
graph tracer enabled but without the kernel built with frame pointers.

Fix up the function graph tracer dependencies so the option is not
available when we have no possibility of having frame pointers, and
adjust the dependencies on the unwinder option to hide the non-frame
pointer unwinder options if the function-graph tracer is enabled.

Reviewed-by: Masami Hiramatsu <mhiramat@kernel.org>
Tested-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
2019-04-23 17:28:32 +01:00
Masahiro Yamada
fe00e50b2d ARM: 8858/1: vdso: use $(LD) instead of $(CC) to link VDSO
We use $(LD) to link vmlinux, modules, decompressors, etc.

VDSO is the only exceptional case where $(CC) is used as the linker
driver, but I do not know why we need to do so. VDSO uses a special
linker script, and does not link standard libraries at all.

I changed the Makefile to use $(LD) rather than $(CC). I confirmed
the same vdso.so.raw was still produced.

Users will be able to use their favorite linker (e.g. lld instead of
of bfd) by passing LD= from the command line.

My plan is to rewrite all VDSO Makefiles to use $(LD), then delete

cc-ldoption.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
2019-04-23 17:22:10 +01:00
Masahiro Yamada
32b25e9b98 ARM: 8855/1: remove unused <asm/limits.h>
No one includes this.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
2019-04-23 17:22:09 +01:00
Peng Fan
14b5f54b78 ARM: 8850/1: use memblocks_present
arm_memory_present is doing same thing as memblocks_present, so
let's use common code memblocks_present instead of platform
specific arm_memory_present.

Patchwork: https://patchwork.kernel.org/patch/10805693/

Signed-off-by: Peng Fan <peng.fan@nxp.com>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
2019-04-23 17:22:07 +01:00
Stefan Agner
fe4fb99020 ARM: 8854/1: drop -mauto-it
The assembler option -mauto-it is no longer a valid option. The last
remaining references have been removed from the documentation in
July 2009 [0].

The currently supported binutils version is 2.20 (released in
September 2009) or higher where gas supports -mimplicit-it=always.
Drop the fallback to -mauto-it and use -mimplicit-it=always only.

[0] https://sourceware.org/git/?p=binutils-gdb.git;a=commit;h=529707530657a333a304c651c808ea630c955223

Signed-off-by: Stefan Agner <stefan@agner.ch>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
2019-04-23 17:21:30 +01:00
Stefan Agner
e8c24bbda7 ARM: 8846/1: warn if divided syntax assembler is used
Remove the -mno-warn-deprecated assembler flag to make sure the GNU
assembler warns in case non-unified syntax is used.

Signed-off-by: Stefan Agner <stefan@agner.ch>
Acked-by: Nicolas Pitre <nico@linaro.org>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
2019-04-23 17:21:24 +01:00
Stefan Agner
43947b8890 ARM: 8853/1: drop WASM to work around LLVM issue
Currently LLVM's integrated assembler does not recognize .w form
of the pld instructions (LLVM Bug 40972 [0]):

  ./arch/arm/include/asm/processor.h:133:5: error: invalid instruction
                          "pldw.wt%a0 n"
                           ^
  <inline asm>:2:1: note: instantiated into assembly here
  pldw.w  [r0]
  ^
  1 error generated.

The W macro for generating wide instructions when targeting Thumb-2
is not strictly required for the preload data instructions (pld, pldw)
since they are only available as wide instructions. The GNU assembler
works with or without the .w appended when compiling an Thumb-2 kernel.

Drop the macro to work around LLVM Bug 40972 issue.

[0] https://bugs.llvm.org/show_bug.cgi?id=40972

Signed-off-by: Stefan Agner <stefan@agner.ch>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
2019-04-23 17:20:53 +01:00
Stefan Agner
fe09d9c641 ARM: 8852/1: uaccess: use unified assembler language syntax
Convert the conditional infix to a postfix to make sure this inline
assembly is unified syntax. Since gcc assumes non-unified syntax
when emitting ARM instructions, make sure to define the syntax as
unified.

This allows to use LLVM's integrated assembler.

Additionally, for GCC ".syntax unified" for inline assembly.
When compiling non-Thumb2 GCC always emits a ".syntax divided"
at the beginning of the inline assembly which makes the
assembler fail. Since GCC 5 there is the -masm-syntax-unified
GCC option which make GCC assume unified syntax asm and hence
emits ".syntax unified" even in ARM mode. However, the option
is broken since GCC version 6 (see GCC PR88648 [1]). Work
around by adding ".syntax unified" as part of the inline
assembly.

[0] https://gcc.gnu.org/onlinedocs/gcc/ARM-Options.html#index-masm-syntax-unified
[1] https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88648

Signed-off-by: Stefan Agner <stefan@agner.ch>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
2019-04-23 17:20:52 +01:00
Stefan Agner
a6c9e96bf8 ARM: 8851/1: add TUSERCOND() macro for conditional postfix
Unified assembly syntax requires conditionals to be postfixes.
TUSER() currently only takes a single argument which then gets
appended t (with translation) on every instruction.

This fixes a build error when using LLVM's integrated assembler:
  In file included from kernel/futex.c:72:
  ./arch/arm/include/asm/futex.h:116:3: error: invalid instruction, did you mean: strt?
          "2:     " TUSER(streq) "        %3, [%4]n"
           ^
  <inline asm>:5:4: note: instantiated into assembly here
  2:      streqt  r2, [r4]
          ^~~~~~

Additionally, for GCC ".syntax unified" for inline assembly.
When compiling non-Thumb2 GCC always emits a ".syntax divided"
at the beginning of the inline assembly which makes the
assembler fail. Since GCC 5 there is the -masm-syntax-unified
GCC option which make GCC assume unified syntax asm and hence
emits ".syntax unified" even in ARM mode. However, the option
is broken since GCC version 6 (see GCC PR88648 [1]). Work
around by adding ".syntax unified" as part of the inline
assembly.

[0] https://gcc.gnu.org/onlinedocs/gcc/ARM-Options.html#index-masm-syntax-unified
[1] https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88648

Signed-off-by: Stefan Agner <stefan@agner.ch>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
2019-04-23 17:20:51 +01:00
Yazen Ghannam
71a84402b9 x86/MCE/AMD: Don't report L1 BTB MCA errors on some family 17h models
AMD family 17h Models 10h-2Fh may report a high number of L1 BTB MCA
errors under certain conditions. The errors are benign and can safely be
ignored. However, the high error rate may cause the MCA threshold
counter to overflow causing a high rate of thresholding interrupts.

In addition, users may see the errors reported through the AMD MCE
decoder module, even with the interrupt disabled, due to MCA polling.

Clear the "Counter Present" bit in the Instruction Fetch bank's
MCA_MISC0 register. This will prevent enabling MCA thresholding on this
bank which will prevent the high interrupt rate due to this error.

Define an AMD-specific function to filter these errors from the MCE
event pool so that they don't get reported during early boot.

Rename filter function in EDAC/mce_amd to avoid a naming conflict, while
at it.

 [ bp: Move function prototype to the internal header and
   massage/cleanup, fix typos. ]

Reported-by: Rafał Miłecki <rafal@milecki.pl>
Signed-off-by: Yazen Ghannam <yazen.ghannam@amd.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: "clemej@gmail.com" <clemej@gmail.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Morse <james.morse@arm.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Mauro Carvalho Chehab <mchehab@kernel.org>
Cc: Pu Wen <puwen@hygon.cn>
Cc: Qiuxu Zhuo <qiuxu.zhuo@intel.com>
Cc: Shirish S <Shirish.S@amd.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Vishal Verma <vishal.l.verma@intel.com>
Cc: linux-edac <linux-edac@vger.kernel.org>
Cc: x86-ml <x86@kernel.org>
Cc: <stable@vger.kernel.org> # 5.0.x: c95b323dcd: x86/MCE/AMD: Turn off MC4_MISC thresholding on all family 0x15 models
Cc: <stable@vger.kernel.org> # 5.0.x: 30aa3d26ed: x86/MCE/AMD: Carve out the MC4_MISC thresholding quirk
Cc: <stable@vger.kernel.org> # 5.0.x: 9308fd4074: x86/MCE: Group AMD function prototypes in <asm/mce.h>
Cc: <stable@vger.kernel.org> # 5.0.x
Link: https://lkml.kernel.org/r/20190325163410.171021-2-Yazen.Ghannam@amd.com
2019-04-23 18:16:07 +02:00
Jonathan Neuschäfer
f5d356328d drm/sched: Fix description of drm_sched_stop
Since commit 222b5f0441 ("drm/sched: Refactor ring mirror list
handling."), drm_sched_hw_job_reset is no longer there, so let's adjust
the doc comment accordingly.

Reviewed-by: Andrey Grodzovsky <andrey.grodzovsky@amd.com>
Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-04-23 11:15:38 -05:00
Colin Ian King
98df7446c2 Bluetooth: hci_h5: fix spelling mistake "sliped" -> "slipped"
There is a spelling mistake in a BT_DBG debug message. Fix it.

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2019-04-23 18:09:08 +02:00
Sean Wang
cac63f9b16 Bluetooth: mediatek: Fixed incorrect type in assignment
Fixed warning: incorrect type in assignment reported by kbuild test robot.
The detailed warning is shown as below.

make ARCH=x86_64 allmodconfig
make C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__'

All warnings (new ones prefixed by >>):

btmtkuart.c:671:18: sparse:    warning: incorrect type in assignment
			       (different base types)
btmtkuart.c:671:18: sparse:    expected unsigned int [usertype] baudrate
btmtkuart.c:671:18: sparse:    got restricted __le32 [usertype]

sparse warnings: (new ones prefixed by >>)
btmtkuart.c:671:18: sparse: warning: incorrect type in assignment
			       (different base types)
btmtkuart.c:671:18: sparse:    expected unsigned int [usertype] baudrate
btmtkuart.c:671:18: sparse:    got restricted __le32 [usertype]

vim +671 drivers/bluetooth/btmtkuart.c

   659
   660	static int btmtkuart_change_baudrate(struct hci_dev *hdev)
   661	{
   662		struct btmtkuart_dev *bdev = hci_get_drvdata(hdev);
   663		struct btmtk_hci_wmt_params wmt_params;
   664		u32 baudrate;
   665		u8 param;
   666		int err;
   667
   668		/* Indicate the device to enter the probe state the host is
   669		 * ready to change a new baudrate.
   670		 */
 > 671		baudrate = cpu_to_le32(bdev->desired_speed);
   672		wmt_params.op = MTK_WMT_HIF;

Fixes: 22eaf6c994 ("Bluetooth: mediatek: add support for MediaTek MT7663U and MT7668U UART devices")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2019-04-23 18:09:08 +02:00
Sean Wang
637c8e9013 Bluetooth: btmtksdio: fix uninitialized symbol errors in btmtksdio_rx_packet
Fixed all the below warnings. They would probably cause the following
error handling path would use the uninitialized value and then produce
unexpected behavior.

drivers/bluetooth/btmtksdio.c:470:2: warning: ‘old_len’ may be used
uninitialized in this function [-Wmaybe-uninitialized]
  print_hex_dump(KERN_ERR, "err sdio rx: ", DUMP_PREFIX_NONE, 4, 1,
  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
          old_data, old_len, true);
          ~~~~~~~~~~~~~~~~~~~~~~~~
drivers/bluetooth/btmtksdio.c:376:15: note: ‘old_len’ was declared here
  unsigned int old_len;
               ^~~~~~~
drivers/bluetooth/btmtksdio.c:470:2: warning: ‘old_data’ may be used
uninitialized in this function [-Wmaybe-uninitialized]
  print_hex_dump(KERN_ERR, "err sdio rx: ", DUMP_PREFIX_NONE, 4, 1,
  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
          old_data, old_len, true);
          ~~~~~~~~~~~~~~~~~~~~~~~~
drivers/bluetooth/btmtksdio.c:375:17: note: ‘old_data’ was declared here
  unsigned char *old_data;
                 ^~~~~~~~

v2: Remove old_len and old_data because the error path for sdio_readsb also
    seems wrong. And change the prefix from "mediatek" to "btmtksdio".

Fixes: d74eef2834b5 ("Bluetooth: mediatek: add support for MediaTek MT7663S and MT7668S SDIO devices")
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Reported-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2019-04-23 18:09:08 +02:00
Sean Wang
afa8d3160a Bluetooth: btsdio: Use module_sdio_driver helper
Macro module_sdio_driver is used for drivers whose init and exit paths
only register and unregister to SDIO API. So remove boilerplate code to
make code simpler by using module_sdio_driver.

Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Acked-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2019-04-23 18:09:07 +02:00
Sean Wang
a6094a468f Bluetooth: mediatek: Use module_sdio_driver helper
Macro module_sdio_driver is used for drivers whose init and exit paths
only register and unregister to SDIO API. So remove boilerplate code to
make code simpler by using module_sdio_driver.

Suggested-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Acked-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2019-04-23 18:09:07 +02:00
Sean Wang
db0a390835 mmc: sdio: Add helper macro for sdio_driver boilerplate
This patch introduces the module_sdio_driver macro which is a convenience
macro for SDIO driver modules similar to module_usb_driver. It is intended
to be used by drivers which init/exit section does nothing but register/
unregister the SDIO driver. By using this macro it is possible to eliminate
a few lines of boilerplate code per SDIO driver.

Suggested-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Acked-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2019-04-23 18:09:07 +02:00