The syzbot hit KASAN bug in perf_callchain_store having the entry stored
behind the allocated bounds [1].
We miss the sample_max_stack check for the initial event that allocates
callchain buffers. This missing check allows to create an event with
sample_max_stack value bigger than the global sysctl maximum:
# sysctl -a | grep perf_event_max_stack
kernel.perf_event_max_stack = 127
# perf record -vv -C 1 -e cycles/max-stack=256/ kill
...
perf_event_attr:
size 112
...
sample_max_stack 256
------------------------------------------------------------
sys_perf_event_open: pid -1 cpu 1 group_fd -1 flags 0x8 = 4
Note the '-C 1', which forces perf record to create just single event.
Otherwise it opens event for every cpu, then the sample_max_stack check
fails on the second event and all's fine.
The fix is to run the sample_max_stack check also for the first event
with callchains.
[1] https://marc.info/?l=linux-kernel&m=152352732920874&w=2
Reported-by: syzbot+7c449856228b63ac951e@syzkaller.appspotmail.com
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: syzkaller-bugs@googlegroups.com
Cc: x86@kernel.org
Fixes: 97c79a38cd ("perf core: Per event callchain limit")
Link: http://lkml.kernel.org/r/20180415092352.12403-2-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Return immediately when we find issue in the user stack checks. The
error value could get overwritten by following check for
PERF_SAMPLE_REGS_INTR.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: syzkaller-bugs@googlegroups.com
Cc: x86@kernel.org
Fixes: 60e2364e60 ("perf: Add ability to sample machine state on interrupt")
Link: http://lkml.kernel.org/r/20180415092352.12403-1-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
'perf list' with flags -d and -v print a description (-d) or a very
verbose explanation (-v) of CPU specific counter events. These
descriptions are provided with the json files in directory
pmu-events/arch/s390/*.json.
Display of these descriptions on s390 requires the corresponding json
files.
On s390 this does not work because function is_pmu_core() does not
detect the s390 directory name where the CPU specific events are listed.
On x86 it is:
/sys/bus/event_source/devices/cpu
whereas on s390 it is:
/sys/bus/event_source/devices/cpum_cf
/sys/bus/event_source/devices/cpum_sf
Fix this by adding s390 directory name testing to function
is_pmu_core(). This is the same approach as taken for the ARM platform.
Output before:
[root@s35lp76 perf]# ./perf list -d pmu
List of pre-defined events (to be used in -e):
cpum_cf/AES_BLOCKED_CYCLES/ [Kernel PMU event]
cpum_cf/AES_BLOCKED_FUNCTIONS/ [Kernel PMU event]
cpum_cf/AES_CYCLES/ [Kernel PMU event]
cpum_cf/AES_FUNCTIONS/ [Kernel PMU event]
....
cpum_cf/TX_NC_TEND/ [Kernel PMU event]
cpum_cf/VX_BCD_EXECUTION_SLOTS/ [Kernel PMU event]
cpum_sf/SF_CYCLES_BASIC/ [Kernel PMU event]
Output after:
[root@s35lp76 perf]# ./perf list -d pmu
List of pre-defined events (to be used in -e):
cpum_cf/AES_BLOCKED_CYCLES/ [Kernel PMU event]
cpum_cf/AES_BLOCKED_FUNCTIONS/ [Kernel PMU event]
cpum_cf/AES_CYCLES/ [Kernel PMU event]
cpum_cf/AES_FUNCTIONS/ [Kernel PMU event]
....
cpum_cf/TX_NC_TEND/ [Kernel PMU event]
cpum_cf/VX_BCD_EXECUTION_SLOTS/ [Kernel PMU event]
cpum_sf/SF_CYCLES_BASIC/ [Kernel PMU event]
3906:
bcd_dfp_execution_slots
[BCD DFP Execution Slots]
decimal_instructions
[Decimal Instructions]
dtlb2_gpage_writes
[DTLB2 GPAGE Writes]
dtlb2_hpage_writes
[DTLB2 HPAGE Writes]
dtlb2_misses
[DTLB2 Misses]
dtlb2_writes
[DTLB2 Writes]
itlb2_misses
[ITLB2 Misses]
itlb2_writes
[ITLB2 Writes]
l1c_tlb2_misses
[L1C TLB2 Misses]
.....
cfvn 3:
cpu_cycles
[CPU Cycles]
instructions
[Instructions]
l1d_dir_writes
[L1D Directory Writes]
l1d_penalty_cycles
[L1D Penalty Cycles]
l1i_dir_writes
[L1I Directory Writes]
l1i_penalty_cycles
[L1I Penalty Cycles]
problem_state_cpu_cycles
[Problem State CPU Cycles]
problem_state_instructions
[Problem State Instructions]
....
csvn generic:
aes_blocked_cycles
[AES Blocked Cycles]
aes_blocked_functions
[AES Blocked Functions]
aes_cycles
[AES Cycles]
aes_functions
[AES Functions]
dea_blocked_cycles
[DEA Blocked Cycles]
dea_blocked_functions
[DEA Blocked Functions]
....
Signed-off-by: Thomas Richter <tmricht@linux.vnet.ibm.com>
Reviewed-by: Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Link: http://lkml.kernel.org/r/20180416132314.33249-1-tmricht@linux.ibm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Store preempting context switch out event into Perf trace as a part of
PERF_RECORD_SWITCH[_CPU_WIDE] record.
Percentage of preempting and non-preempting context switches help
understanding the nature of workloads (CPU or IO bound) that are running
on a machine;
The event is treated as preemption one when task->state value of the
thread being switched out is TASK_RUNNING. Event type encoding is
implemented using PERF_RECORD_MISC_SWITCH_OUT_PREEMPT bit;
Signed-off-by: Alexey Budankov <alexey.budankov@linux.intel.com>
Acked-by: Peter Zijlstra <peterz@infradead.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: http://lkml.kernel.org/r/9ff84e83-a0ca-dd82-a6d0-cb951689be74@linux.intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Sync the following tooling headers with the latest kernel version:
tools/arch/arm/include/uapi/asm/kvm.h
- New ABI: KVM_REG_ARM_*
tools/arch/x86/include/asm/required-features.h
- Removal of NEED_LA57 dependency
tools/arch/x86/include/uapi/asm/kvm.h
- New KVM ABI: KVM_SYNC_X86_*
tools/include/uapi/asm-generic/mman-common.h
- New ABI: MAP_FIXED_NOREPLACE flag
tools/include/uapi/linux/bpf.h
- New ABI: BPF_F_SEQ_NUMBER functions
tools/include/uapi/linux/if_link.h
- New ABI: IFLA tun and rmnet support
tools/include/uapi/linux/kvm.h
- New ABI: hyperv eventfd and CONN_ID_MASK support plus header cleanups
tools/include/uapi/sound/asound.h
- New ABI: SNDRV_PCM_FORMAT_FIRST PCM format specifier
tools/perf/arch/x86/entry/syscalls/syscall_64.tbl
- The x86 system call table description changed due to the ptregs changes and the renames, in:
d5a00528b58c: syscalls/core, syscalls/x86: Rename struct pt_regs-based sys_*() to __x64_sys_*()
5ac9efa3c50d: syscalls/core, syscalls/x86: Clean up compat syscall stub naming convention
ebeb8c82ffaf: syscalls/x86: Use 'struct pt_regs' based syscall calling for IA32_EMULATION and x32
Also fix the x86 syscall table warning:
-Warning: Kernel ABI header at 'tools/arch/x86/entry/syscalls/syscall_64.tbl' differs from latest version at 'arch/x86/entry/syscalls/syscall_64.tbl'
+Warning: Kernel ABI header at 'tools/perf/arch/x86/entry/syscalls/syscall_64.tbl' differs from latest version at 'arch/x86/entry/syscalls/syscall_64.tbl'
None of these changes impact existing tooling code, so we only have to copy the kernel version.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Alexei Starovoitov <alexei.starovoitov@gmail.com>
Cc: Alexey Budankov <alexey.budankov@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Brian Robbins <brianrob@microsoft.com>
Cc: Clark Williams <williams@redhat.com>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: David Ahern <dsahern@gmail.com>
Cc: Dmitriy Vyukov <dvyukov@google.com> <dvyukov@google.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
Cc: Jesper Dangaard Brouer <brouer@redhat.com>
Cc: Jin Yao <yao.jin@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Kim Phillips <kim.phillips@arm.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Li Zhijian <lizhijian@cn.fujitsu.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Martin Liška <mliska@suse.cz>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Matthias Kaehlcke <mka@chromium.org>
Cc: Miguel Bernal Marin <miguel.bernal.marin@linux.intel.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ravi Bangoria <ravi.bangoria@linux.vnet.ibm.com>
Cc: Sandipan Das <sandipan@linux.vnet.ibm.com>
Cc: Stephane Eranian <eranian@google.com>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Takuya Yamamoto <tkydevel@gmail.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Thomas Richter <tmricht@linux.ibm.com>
Cc: Wang Nan <wangnan0@huawei.com>
Cc: William Cohen <wcohen@redhat.com>
Cc: Yonghong Song <yhs@fb.com>
Link: http://lkml.kernel.org/r/20180416064024.ofjtrz5yuu3ykhvl@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
xenbus_command_reply() did not actually copy the response string and
leaked stack content instead.
Fixes: 9a6161fe73 ("xen: return xenstore command failures via response instead of rc")
Signed-off-by: Simon Gaiser <simon@invisiblethingslab.com>
Reviewed-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
This is the sync up with the canonical definition of the sound
protocol in Xen:
1. Protocol version was referenced in the protocol description,
but missed its definition. Fixed by adding a constant
for current protocol version.
2. Some of the request descriptions have "reserved" fields
missed: fixed by adding corresponding entries.
3. Extend the size of the requests and responses to 64 octets.
Bump protocol version to 2.
4. Add explicit back and front synchronization
In order to provide explicit synchronization between backend and
frontend the following changes are introduced in the protocol:
- add new ring buffer for sending asynchronous events from
backend to frontend to report number of bytes played by the
frontend (XENSND_EVT_CUR_POS)
- introduce trigger events for playback control: start/stop/pause/resume
- add "req-" prefix to event-channel and ring-ref to unify naming
of the Xen event channels for requests and events
5. Add explicit back and front parameter negotiation
In order to provide explicit stream parameter negotiation between
backend and frontend the following changes are introduced in the protocol:
add XENSND_OP_HW_PARAM_QUERY request to read/update
configuration space for the parameters given: request passes
desired parameter's intervals/masks and the response to this request
returns allowed min/max intervals/masks to be used.
Signed-off-by: Oleksandr Andrushchenko <oleksandr_andrushchenko@epam.com>
Signed-off-by: Oleksandr Grytsov <oleksandr_grytsov@epam.com>
Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
This is something that bothered us from a long time. When hid-input
doesn't know how to map a usage, it uses *_MISC. But there is something
else which increments the usage if the evdev code is already used.
This leads to few issues:
- some devices may have their ABS_X mapped to ABS_Y if they export a bad
set of usages (see the DragonRise joysticks IIRC -> fixed in a specific
HID driver)
- *_MISC + N might (will) conflict with other defined axes (my Logitech
H800 exports some multitouch axes because of that)
- this prevents to freely add some new evdev usages, because "hey, my
headset will now report ABS_COFFEE, and it's not coffee capable".
So let's try to kill this nonsense, and hope we won't break too many
devices.
I my headset case, the ABS_MISC axes are created because of some
proprietary usages, so we might not break that many devices.
For backward compatibility, a quirk HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE
is created and can be applied to any device that needs this behavior.
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Acked-by: Peter Hutterer <peter.hutterer@who-t.net>
Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
When vgic_prune_ap_list() finds an interrupt that needs to be migrated
to a new VCPU, we should notify this VCPU of the pending interrupt,
since it requires immediate action.
Kick this VCPU once we have added the new IRQ to the list, but only
after dropping the locks.
Reported-by: Stefano Stabellini <sstabellini@kernel.org>
Reviewed-by: Christoffer Dall <christoffer.dall@arm.com>
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
While generating a message about guests probing for SVE/LORegions
is a useful debugging tool, considering it an error is slightly
over the top, as this is the only way the guest can find out
about the presence of the feature.
Let's turn these message into kvm_debug so that they can only
be seen if CONFIG_DYNAMIC_DEBUG, and kept quiet otherwise.
Acked-by: Christoffer Dall <christoffer.dall@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
This adds a new driver for the Redragon Asura keyboard. The Asura
keyboard contains an error in the HID descriptor which causes all
modifier keys to be mapped to left shift. Additionally, we suppress
the creation of a second, not working, keyboard device.
Signed-off-by: Robert Munteanu <rombert@apache.org>
Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
We might need to do some actions before the shadow variable is freed.
For example, we might need to remove it from a list or free some data
that it points to.
This is already possible now. The user can get the shadow variable
by klp_shadow_get(), do the necessary actions, and then call
klp_shadow_free().
This patch allows to do it a more elegant way. The user could implement
the needed actions in a callback that is passed to klp_shadow_free()
as a parameter. The callback usually does reverse operations to
the constructor callback that can be called by klp_shadow_*alloc().
It is especially useful for klp_shadow_free_all(). There we need to do
these extra actions for each found shadow variable with the given ID.
Note that the memory used by the shadow variable itself is still released
later by rcu callback. It is needed to protect internal structures that
keep all shadow variables. But the destructor is called immediately.
The shadow variable must not be access anyway after klp_shadow_free()
is called. The user is responsible to protect this any suitable way.
Be aware that the destructor is called under klp_shadow_lock. It is
the same as for the contructor in klp_shadow_alloc().
Signed-off-by: Petr Mladek <pmladek@suse.com>
Acked-by: Josh Poimboeuf <jpoimboe@redhat.com>
Acked-by: Miroslav Benes <mbenes@suse.cz>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
The existing API allows to pass a sample data to initialize the shadow
data. It works well when the data are position independent. But it fails
miserably when we need to set a pointer to the shadow structure itself.
Unfortunately, we might need to initialize the pointer surprisingly
often because of struct list_head. It is even worse because the list
might be hidden in other common structures, for example, struct mutex,
struct wait_queue_head.
For example, this was needed to fix races in ALSA sequencer. It required
to add mutex into struct snd_seq_client. See commit b3defb791b
("ALSA: seq: Make ioctls race-free") and commit d15d662e89
("ALSA: seq: Fix racy pool initializations")
This patch makes the API more safe. A custom constructor function and data
are passed to klp_shadow_*alloc() functions instead of the sample data.
Note that ctor_data are no longer a template for shadow->data. It might
point to any data that might be necessary when the constructor is called.
Also note that the constructor is called under klp_shadow_lock. It is
an internal spin_lock that synchronizes alloc() vs. get() operations,
see klp_shadow_get_or_alloc(). On one hand, this adds a risk of ABBA
deadlocks. On the other hand, it allows to do some operations safely.
For example, we could add the new structure into an existing list.
This must be done only once when the structure is allocated.
Reported-by: Nicolai Stange <nstange@suse.de>
Signed-off-by: Petr Mladek <pmladek@suse.com>
Acked-by: Josh Poimboeuf <jpoimboe@redhat.com>
Acked-by: Miroslav Benes <mbenes@suse.cz>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
In snd_soc_tplg_component_remove(), it should compare index and
not dobj->index with SND_SOC_TPLG_INDEX_ALL for removing all
topology objects.
Signed-off-by: Yan Wang <yan.wang@linux.intel.com>
Signed-off-by: Liam Girdwood <liam.r.girdwood@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Add a simple set of tests for the IPsec xfrm commands.
Signed-off-by: Shannon Nelson <shannon.nelson@oracle.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Yet another slight code cleanup: there are two places where
calculating the PCM delay, and they can be unified in a single
helper. It reduces the multiple open codes.
Reviewed-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Change indentation so register address offset and register bit definitions
are aligned to same column.
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Reviewed-by: Andi Shyti <andi@etezian.org>
Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
Currently timeout errors in polling I/O mode transfer are silently ignored.
Fix it by returning an error when we time out waiting on the RX FIFO level
to reach the transfer length.
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Reviewed-by: Andi Shyti <andi@etezian.org>
Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
The channel argument is not used and anyway it could be retrieved from
the passed driver data structure.
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Reviewed-by: Andi Shyti <andi@etezian.org>
Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
The tgl_spi pointer is now unused so remove it.
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Reviewed-by: Andi Shyti <andi@etezian.org>
Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
The change updates sh_msiof_spi_set_clk_regs() function by iterating
over BRDV power values. Note that the change is a functional one, namely
prescaler output x 1/1 set in BRDV bit field (0b111) for MSO division
rate set to 2 is substituted by BRDV = 0b000 and BRPS = 0b0, in terms
of written values to TSCR setting of 0x0107 is substituted by 0x0000,
and for all input parameter cases this is the only functional change,
which touches the controller.
As a result of the rework the function is supposed to be slightly more
efficient and more readable and maintainable in case of any further
extensions.
Signed-off-by: Vladimir Zapolskiy <vladimir_zapolskiy@mentor.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
clk_get_rate() is below clk_prepare_enable(), so
its error should lead to goto err_clk_disable, not to err_master_put.
Found by Linux Driver Verification project (linuxtesting.org).
Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Reviewed-by: Amelie Delaunay <amelie.delaunay@st.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Silence smatch over:
drivers/gpu/drm/i915/selftests/intel_workarounds.c:58 read_nonprivs() error: 'cs' dereferencing possible ERR_PTR()
by handling a potential (but unlikely) failure of intel_ring_begin.
Fixes: f4ecfbfc32 ("drm/i915: Check whitelist registers across resets")
Signed-off-by: Oscar Mateo <oscar.mateo@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/1523915821-30624-1-git-send-email-oscar.mateo@intel.com
By default all the streams are mapped to all links after controller is
reset which causes stream to be broadcast on all the links.
This patch resets the stream-link mapping after controller reset. The
stream is mapped later to the appropriate link as part of stream setup.
Tested-by: Abhijeet Kumar <abhijeet.kumar@intel.com>
Signed-off-by: Rakesh Ughreja <rakesh.a.ughreja@intel.com>
Signed-off-by: Sanyog Kale <sanyog.r.kale@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
An application can choose to call .prepare function
any number of times. In such scenarios, there is a
need to reset the DSP pipeline.
Signed-off-by: Pardha Saradhi K <pardha.saradhi.kesapragada@intel.com>
Signed-off-by: Divya Prakash <divya1.prakash@intel.com>
Signed-off-by: Sriram Periyasamy <sriramx.periyasamy@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
SKL and KBL driver used separate set of fw ops for library loading.
However, with the unification of fw binary, use the common set of fw
ops for both
Signed-off-by: Pradeep Tewani <pradeep.d.tewani@intel.com>
Signed-off-by: Sriram Periyasamy <sriramx.periyasamy@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Currently during destroy pipeline the gateway is disabled
before DMA completion. This leads to improper draining of
data and subsequently causing issues on HD-Audio DMA.
Hence added a new pipe reset IPC in skl_pcm_hw_free in
which the Gateway Enable(GEN bit) is reset to 0 after
DMA completion in skl_pcm_trigger.
Signed-off-by: Divya Prakash <divya1.prakash@intel.com>
Signed-off-by: Sriram Periyasamy <sriramx.periyasamy@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
As documented in the devicetree bindings (pci/kirin-pcie.txt) and the
reset gpio name must be 'reset-gpios'. However, current driver
erroneously looks for a 'reset-gpio' resource which makes the driver
probe fail. Fix it.
Fixes: fc5165db24 ("PCI: kirin: Add HiSilicon Kirin SoC PCIe controller driver")
Signed-off-by: Loic Poulain <loic.poulain@linaro.org>
[lorenzo.pieralisi@arm.com: updated the commit log]
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Acked-by: Xiaowei Song <songxiaowei@hisilicon.com>
Buck10 is a multi(dual) phase regulator. So as part of enabling it
turn on the LP87565_BUCK_CTRL_1_FPWM_MP_0_2 bit which forces it to
operate always in multiphase and forced-PWM operation mode.
This helps improve the transient voltage response while switching OPP.
Signed-off-by: Keerthy <j-keerthy@ti.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
The slew rate might need a +/- 15% margin as per the latest data manual:
http://www.ti.com/lit/ds/snvsb22/snvsb22.pdf
Hence take a conservative approach to program 85% of the original
hardware slew rate so that the software accommodates the margin
delay while voltage switching. Hence reduce the default ramp_delay
populated in the descriptors also by 15%.
Signed-off-by: Keerthy <j-keerthy@ti.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
RongQing reported that there are some X2APIC id 0xffffffff in his machine's
ACPI MADT table, which makes the number of possible CPU inaccurate.
The reason is that the ACPI X2APIC parser has no sanity check for APIC ID
0xffffffff, which is an invalid id in all APIC types. See "Intel® 64
Architecture x2APIC Specification", Chapter 2.4.1.
Add a sanity check to acpi_parse_x2apic() which ignores the invalid id.
Reported-by: Li RongQing <lirongqing@baidu.com>
Signed-off-by: Dou Liyang <douly.fnst@cn.fujitsu.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: stable@vger.kernel.org
Cc: len.brown@intel.com
Cc: rjw@rjwysocki.net
Cc: hpa@zytor.com
Link: https://lkml.kernel.org/r/20180412014052.25186-1-douly.fnst@cn.fujitsu.com
sound/soc/codecs/rt1305.c:1174:3-8: No need to set .owner here. The core will do it.
Remove .owner field if calls are used which set it automatically
Generated by: scripts/coccinelle/api/platform_no_drv_owner.cocci
Fixes: 29bc643ddd ("ASoC: rt1305: Add RT1305/RT1306 amplifier driver")
CC: Shuming Fan <shumingf@realtek.com>
Signed-off-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This patch added <linux/acpi.h> header
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Shuming Fan <shumingf@realtek.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
The check for a valid ptr in ddb_io->dma isn't really necessary since only
devices that do data transport using DMA are supported by the driver, and
all previous initialisation code (through input_init(), output_init() and
dma_init(), has_dma is always true as it's set in ddb_probe() during
driver load) guarantees the ptr is set.
As a side effect, this silences these sparse warnings (albeit them being
false positives as ddb_io->dma won't change in these functions so the
condition always equals to the same result):
drivers/media/pci/ddbridge/ddbridge-core.c:495:9: warning: context imbalance in 'ddb_output_start' - different lock contexts for basic block
drivers/media/pci/ddbridge/ddbridge-core.c:510:9: warning: context imbalance in 'ddb_output_stop' - different lock contexts for basic block
drivers/media/pci/ddbridge/ddbridge-core.c:525:9: warning: context imbalance in 'ddb_input_stop' - different lock contexts for basic block
drivers/media/pci/ddbridge/ddbridge-core.c:560:9: warning: context imbalance in 'ddb_input_start' - different lock contexts for basic block
Signed-off-by: Daniel Scheller <d.scheller@gmx.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The TSC calibration code uses HPET as reference. The conversion normalizes
the delta of two HPET timestamps:
hpetref = ((tshpet1 - tshpet2) * HPET_PERIOD) / 1e6
and then divides the normalized delta of the corresponding TSC timestamps
by the result to calulate the TSC frequency.
tscfreq = ((tstsc1 - tstsc2 ) * 1e6) / hpetref
This uses do_div() which takes an u32 as the divisor, which worked so far
because the HPET frequency was low enough that 'hpetref' never exceeded
32bit.
On Skylake machines the HPET frequency increased so 'hpetref' can exceed
32bit. do_div() truncates the divisor, which causes the calibration to
fail.
Use div64_u64() to avoid the problem.
[ tglx: Fixes whitespace mangled patch and rewrote changelog ]
Signed-off-by: Xiaoming Gao <newtongao@tencent.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: stable@vger.kernel.org
Cc: peterz@infradead.org
Cc: hpa@zytor.com
Link: https://lkml.kernel.org/r/38894564-4fc9-b8ec-353f-de702839e44e@gmail.com
As warned by smatch:
drivers/media/pci/mantis/mantis_uart.c:105 mantis_uart_work() warn: this loop depends on readl() succeeding
If something goes wrong at readl(), the logic will stay there
inside an IRQ code forever. This is not the nicest thing to
do :-)
So, add a timeout there, preventing staying inside the IRQ
for more than 10ms.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
As warned by smatch:
drivers/media/rc/st_rc.c:110 st_rc_rx_interrupt() warn: this loop depends on readl() succeeding
If something goes wrong at readl(), the logic will stay there
inside an IRQ code forever. This is not the nicest thing to
do :-)
So, add a timeout there, preventing staying inside the IRQ
for more than 10ms.
Acked-by: Patrice Chotard <patrice.chotard@st.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
On smatch, this warning is trigged:
drivers/staging/media/atomisp/pci/atomisp2/hmm/hmm_bo.c:324 __bo_take_off_handling() error: we previously assumed 'bo->prev' could be null (see line 314)
Because it can't properly analize the truth table for the above
function. So, add an explicit check for the final condition there.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
There are two functions used externally:
drivers/staging/media/atomisp/pci/atomisp2/atomisp_compat_ioctl32.c:866:6: warning: symbol 'atomisp_do_compat_ioctl' was not declared. Should it be static?
drivers/staging/media/atomisp/pci/atomisp2/atomisp_compat_ioctl32.c:1110:6: warning: symbol 'atomisp_compat_ioctl32' was not declared. Should it be static?
whose include header is missing. Add it.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The logic at get_atomisp_parameters32() is broken, as pointed by
smatch:
drivers/staging/media/atomisp/pci/atomisp2/atomisp_compat_ioctl32.c:737:21: warning: dereference of noderef expression
drivers/staging/media/atomisp/pci/atomisp2/atomisp_compat_ioctl32.c:744:60: warning: dereference of noderef expression
drivers/staging/media/atomisp/pci/atomisp2/atomisp_compat_ioctl32.c:763:21: warning: dereference of noderef expression
drivers/staging/media/atomisp/pci/atomisp2/atomisp_compat_ioctl32.c:770:60: warning: dereference of noderef expression
drivers/staging/media/atomisp/pci/atomisp2/atomisp_compat_ioctl32.c:788:21: warning: dereference of noderef expression
drivers/staging/media/atomisp/pci/atomisp2/atomisp_compat_ioctl32.c:795:60: warning: dereference of noderef expression
drivers/staging/media/atomisp/pci/atomisp2/atomisp_compat_ioctl32.c:812:21: warning: dereference of noderef expression
drivers/staging/media/atomisp/pci/atomisp2/atomisp_compat_ioctl32.c:819:60: warning: dereference of noderef expression
It tries to access userspace data directly, without calling
get_user(). That should generate OOPS. Thankfully, the right
logic is already there (although commented out).
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
As warned by smatch:
drivers/media/v4l2-core/v4l2-compat-ioctl32.c:879 put_v4l2_ext_controls32() warn: check for integer overflow 'count'
The access_ok() logic should check for too big arrays too.
Cc: stable@vger.kernel.org
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The omap/omap3 and viu drivers are for 32 bit platforms only.
There, a pointer has 32 bits. Now that those drivers build
for 64 bits with COMPILE_TEST, they produce the following
warnings:
drivers/media/platform/omap/omap_vout_vrfb.c: In function 'omap_vout_allocate_vrfb_buffers':
drivers/media/platform/omap/omap_vout_vrfb.c:57:10: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
memset((void *) vout->smsshado_virt_addr[i], 0,
^
drivers/media/platform/fsl-viu.c: In function 'viu_setup_preview':
drivers/media/platform/fsl-viu.c:753:28: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]
reg_val.field_base_addr = (u32)dev->ovbuf.base;
^
drivers/media/platform/omap/omap_vout.c: In function 'omap_vout_get_userptr':
drivers/media/platform/omap/omap_vout.c:209:25: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
*physp = virt_to_phys((void *)virtp);
^
drivers/media/platform/omap3isp/ispccdc.c: In function 'ccdc_config':
drivers/media/platform/omap3isp/ispccdc.c:738:9: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
(__force void __user *)fpc.fpcaddr,
^
Add some typecasts to remove those warnings when building for
64 bits.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Changeset dc9f65cf9a ("media: staging: atomisp: avoid a warning if 32
bits build") was meant to solve an impossible condition when building
with 32 bits. It turns that this impossible condition also happens wit
64 bits:
drivers/staging/media/atomisp/platform/intel-mid/atomisp_gmin_platform.c:698 gmin_get_config_var() warn: impossible condition '(*out_len > (~0)) => (0-u64max > u64max)'
After a further analysis, this condition will always be false as, on
all architectures, size_t doesn't have more bits than unsigned long.
Also, the only two archs that really matter are x86 and x86_64, as this
driver doesn't build on other archs (as it depends on X86-specific UEFI
support).
So, just drop the useless code.
Fixes: dc9f65cf9a ("media: staging: atomisp: avoid a warning if 32 bits build")
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
drivers/media/cec/cec-pin-error-inj.c:231
cec_pin_error_inj_parse_line() error: uninitialized symbol 'pos'.
The tx-add-bytes command didn't check for the presence of an argument, and
also didn't check that it was > 0.
This should fix this error.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The logic at v4l2_fwnode_reference_parse_int_props() is somewhat
complex and violates Linux coding style, as it does multiple
statements on a single line. That makes static analyzers to
be confused, as warned by smatch:
drivers/media/v4l2-core/v4l2-fwnode.c:832 v4l2_fwnode_reference_parse_int_props() warn: passing zero to 'PTR_ERR'
Simplify the logic, in order to make clearer about what happens
when v4l2_fwnode_reference_get_int_prop() returns an error.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
