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Clang warns:
../drivers/staging/media/atomisp/pci/sh_css_sp.c:1039:23: warning:
address of 'binary->in_frame_info' will always evaluate to 'true'
[-Wpointer-bool-conversion]
} else if (&binary->in_frame_info) {
~~ ~~~~~~~~^~~~~~~~~~~~~
in_frame_info is not a pointer so if binary is not NULL, in_frame_info's
address cannot be NULL. Change this to an else since it will always be
evaluated as one.
While we are here, clean up this if block. The contents of both if
blocks are the same but a check against "stage == 0" is added when
ISP2401 is defined. USE_INPUT_SYSTEM_VERSION_2401 is only defined when
isp2401_system_global.h is included, which only happens when ISP2401. In
other words, USE_INPUT_SYSTEM_VERSION_2401 always requires ISP2401 to be
defined so the '#ifndef ISP2401' makes no sense. Remove that part of the
block to simplify everything.
Link: https://github.com/ClangBuiltLinux/linux/issues/1036
Reported-by: kbuild test robot <lkp@intel.com>
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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stage->args->delay_frames array could point to NULL frames.
What's weird is that we didn't notice this behavior with the
Intel Aero Yocto code.
Handle it, while adding a notice at the code, as this could
be due to some broken pipeline setup.
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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The sh_css layer adds an abstraction for kvmalloc/kvcalloc.
Get rid of them. Most of the work here was done by this
small coccinelle script:
<cocci>
@@
expression size;
@@
- sh_css_malloc(size)
+ kvmalloc(size, GFP_KERNEL)
@@
expression n;
expression size;
@@
- sh_css_calloc(n, size)
+ kvcalloc(n, size, GFP_KERNEL)
</cocci>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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The frame allocation logic happens differently for userptr
or normal mmap. On a quick look, this sounded to be unbalanced,
but the logic should actually work for both cases.
Add an extra comment to reflect it.
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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For debugging purposes, it helps to know what event
was actually received.
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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If something gets wrong when enabling or disabling an IRQ,
we should know better about what happened.
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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The hmm code is still complex and has bugs. Add a debug print
when memory gets allocated, in order to help identifying what's
happening out there.
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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Instead of using a hacked version of an old copy of
get_user_pages(), use pin_user_pages().
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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This device driver is not MC-centric. So, remove the wrong
caps from it.
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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Yocto Aero driver has a different default for hmm pools.
Use the definitions there.
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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The hmm code is partially based on a fork from 3.10 code,
and has bugs.
Add debug there to help tracking what happens there.
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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The kernel ABI was extended to allow pass tagged user pointers.
Untag the pointers in this function.
Fixes: d93445225cd3 ("uaccess: add noop untagged_addr definition")
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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Now that we have everything in place, we can get rid of the
memory_access abstraction layer.
Now, everything related to heterogeneous memory management
(hmm) is under hmm.c & related pools.
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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The mmgr alloc code returns a different type than hmm, due to
some abstraction layer.
Change the driver to use just one type to represent the
hmm memory.
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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The code for it is commented out, probably because it is
broken or uneeded for the driver to work. So, let's get
rid of it.
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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Those functions are just wrappers for hmm_load/hmm_store.
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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Move the attrs handling into hmm, simplifying even further
what the ia_css_memory_access.c file does.
Yet, the returned type for ia_css_memory_access.c is an
integer, instead of a pointer.
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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Yet another memory abstraction layer. Getting rid of this
may be a little trickier, but let's reduce it to a minimal.
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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Simplify the code by removing this extra memory management
abstraction layer.
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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The code there is a wrapper for hmm/ wrapper. Simplify it,
and get rid of ION-specific code.
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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There are several spelling mistakes in various messages and literal
strings. Fix these.
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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Right now, the variables that define the max number of
delay frames is defined as:
#define VIDEO_FRAME_DELAY 2
#define MAX_NUM_VIDEO_DELAY_FRAMES (VIDEO_FRAME_DELAY + 1)
#define NUM_PREVIEW_DVS_FRAMES (2)
#define MAX_NUM_DELAY_FRAMES MAX(MAX_NUM_VIDEO_DELAY_FRAMES, NUM_PREVIEW_DVS_FRAMES)
In other words, we have:
MAX_NUM_VIDEO_DELAY_FRAMES = 3
MAX_NUM_DELAY_FRAMES = 2
The MAX_NUM_DELAY_FRAMES macro is used only only when allocating
memory. On all other parts, including looping over such array,
MAX_NUM_VIDEO_DELAY_FRAMES is used instead, like:
void sh_css_binary_args_reset(struct sh_css_binary_args *args)
{
unsigned int i;
...
for (i = 0; i < MAX_NUM_VIDEO_DELAY_FRAMES; i++)
args->delay_frames[i] = NULL;
Which will cause buffer overflows, with may override the next array
(tnr_frames[]).
In practice, this may not be causing real issues, as the code
checks for num_delay_frames on some parts (but not everywhere).
So, get rid of the smallest value.
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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Some arguments for tnf and ref settings are meant to be const, but
they're defined without such annotation. Due to that, there's an
ugly cast at sh_css_sp.c.
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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The very same macros are defined as CSS_foo and IA_CSS_foo.
Remove this abstraction, as it just make things confusing,
for no good reason.
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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This driver has 3 different types of debug messages:
- dev_dbg()
- dbg_level
- ia_css_debug_trace_level
Which is crazy. Ideally, it shold just use dev_dbg()
everywhere, but for now let's unify the last two machanisms.
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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It sounds that someone once changed the debug level at compile
time for some testing, but forgot to remove the legacy code after
finishing debuging it.
Get rid of the dead code.
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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Let's reflect the current status at the TODO list, as other
developers can help addressing issues over there.
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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Using DQBUF on non-blocking mode will return -EAGAIN
if nothing arrives. Printing it has no value, even for debug
purposes. So, only display real return codes.
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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There are several error conditions that don't print anything,
making harder to identify bugs at the code there.
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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There's no reason to copy isp_sink_fmt, as the driver
uses it for read-only purposes.
Linux stack is a precious resource. Let's avoid wasting it.
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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Currently, when an EOF IRQ is received, it generates two messages:
[ 59.191893] atomisp-isp2 0000:00:03.0: irq:0x200000
[ 59.191913] atomisp-isp2 0000:00:03.0: atomisp_isr EOF exp_id 142, asd 0
Flooding the dmesg with lots of messages per second. The same
pattern happens for all other IRQs.
Change the logic for printing just one message per IRQ and
rate-limit those, as, for debugging purposes, it is usually
interesting to know that IRQs are being received, but not
displaying every single one.
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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This is not used anywhere. So, let's trash it.
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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The code under load_primary_binaries() is complex and
were hard to understand, because it used to have lots
of ifdefs and broken identation.
The patch which cleaned it and removed the version-specific
ifdefs added a regression.
Solve it.
Fixes: 3c0538fbad9f ("media: atomisp: get rid of most checks for ISP2401 version")
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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Driver allocates DMA memory with dma_alloc_coherent() but frees it with
dma_unmap_single().
This causes DMA warning during system shutdown (with DMA debugging) on
Toradex Colibri VF50 module:
WARNING: CPU: 0 PID: 1 at ../kernel/dma/debug.c:1036 check_unmap+0x3fc/0xb04
DMA-API: fsl-edma 40098000.dma-controller: device driver frees DMA memory with wrong function
[device address=0x0000000087040000] [size=8 bytes] [mapped as coherent] [unmapped as single]
Hardware name: Freescale Vybrid VF5xx/VF6xx (Device Tree)
(unwind_backtrace) from [<8010bb34>] (show_stack+0x10/0x14)
(show_stack) from [<8011ced8>] (__warn+0xf0/0x108)
(__warn) from [<8011cf64>] (warn_slowpath_fmt+0x74/0xb8)
(warn_slowpath_fmt) from [<8017d170>] (check_unmap+0x3fc/0xb04)
(check_unmap) from [<8017d900>] (debug_dma_unmap_page+0x88/0x90)
(debug_dma_unmap_page) from [<80601d68>] (dspi_release_dma+0x88/0x110)
(dspi_release_dma) from [<80601e4c>] (dspi_shutdown+0x5c/0x80)
(dspi_shutdown) from [<805845f8>] (device_shutdown+0x17c/0x220)
(device_shutdown) from [<80143ef8>] (kernel_restart+0xc/0x50)
(kernel_restart) from [<801441cc>] (__do_sys_reboot+0x18c/0x210)
(__do_sys_reboot) from [<80100060>] (ret_fast_syscall+0x0/0x28)
DMA-API: Mapped at:
dma_alloc_attrs+0xa4/0x130
dspi_probe+0x568/0x7b4
platform_drv_probe+0x6c/0xa4
really_probe+0x208/0x348
driver_probe_device+0x5c/0xb4
Fixes: 90ba37033cb9 ("spi: spi-fsl-dspi: Add DMA support for Vybrid")
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Acked-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/1591803717-11218-1-git-send-email-krzk@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>
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The variable ret is being initialized with a value that is never read
and it is being updated later with a new value. The initialization is
redundant and can be removed.
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Addresses-Coverity: ("Unused value")
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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The variable ret is being initialized with a value that is never read
and it is being updated later with a new value. The initialization is
redundant and can be removed.
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Addresses-Coverity: ("Unused value")
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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In function nvmet_async_event_process() we only process AENs iff
there is an open slot on the ctrl->async_event_cmds[] && aen
event list posted by the target is not empty. This keeps host
posted AEN outstanding if target generated AEN list is empty.
We do cleanup the target generated entries from the aen list in
nvmet_ctrl_free()-> nvmet_async_events_free() but we don't
process AEN posted by the host. This leads to following problem :-
When processing admin sq at the time of nvmet_sq_destroy() holds
an extra percpu reference(atomic value = 1), so in the following code
path after switching to atomic rcu, release function (nvmet_sq_free())
is not getting called which blocks the sq->free_done in
nvmet_sq_destroy() :-
nvmet_sq_destroy()
percpu_ref_kill_and_confirm()
- __percpu_ref_switch_mode()
-- __percpu_ref_switch_to_atomic()
--- call_rcu() -> percpu_ref_switch_to_atomic_rcu()
---- /* calls switch callback */
- percpu_ref_put()
-- percpu_ref_put_many(ref, 1)
--- else if (unlikely(atomic_long_sub_and_test(nr, &ref->count)))
---- ref->release(ref); <---- Not called.
This results in indefinite hang:-
void nvmet_sq_destroy(struct nvmet_sq *sq)
...
if (ctrl && ctrl->sqs && ctrl->sqs[0] == sq) {
nvmet_async_events_process(ctrl, status);
percpu_ref_put(&sq->ref);
}
percpu_ref_kill_and_confirm(&sq->ref, nvmet_confirm_sq);
wait_for_completion(&sq->confirm_done);
wait_for_completion(&sq->free_done); <-- Hang here
Which breaks the further disconnect sequence. This problem seems to be
introduced after commit 64f5e9cdd711b ("nvmet: fix memory leak when
removing namespaces and controllers concurrently").
This patch processes ctrl->async_event_cmds[] in the admin sq destroy()
context irrespetive of aen_list. Also we get rid of the controller's
aen_list processing in the nvmet_sq_destroy() context and just ignore
ctrl->aen_list.
This results in nvmet_async_events_process() being called from workqueue
context so we adjust the code accordingly.
Fixes: 64f5e9cdd711 ("nvmet: fix memory leak when removing namespaces and controllers concurrently ")
Signed-off-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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While the NVMe specification allows the device to access the host memory
buffer in host DRAM from all power states, hosts will fail access to
DRAM during S3 and similar power states.
Fixes: d916b1be94b6 ("nvme-pci: use host managed power state for suspend")
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Keith Busch <kbusch@kernel.org>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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Asynchronous event notifications do not have an associated request.
When fcp_io() fails we unconditionally call nvme_cleanup_cmd() which
leads to a crash.
Fixes: 16686f3a6c3c ("nvme: move common call to nvme_cleanup_cmd to core layer")
Signed-off-by: Daniel Wagner <dwagner@suse.de>
Reviewed-by: Himanshu Madhani <hmadhani2024@gmail.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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nvmet_tcp_ops is never modified and can be made const to allow the
compiler to put it in read-only memory, as done in other transports.
Before:
text data bss dec hex filename
16164 160 12 16336 3fd0 drivers/nvme/target/tcp.o
After:
text data bss dec hex filename
16277 64 12 16353 3fe1 drivers/nvme/target/tcp.o
Signed-off-by: Max Gurtovoy <maxg@mellanox.com>
Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com>
Reviewed-by: Israel Rukshin <israelr@mellanox.com>
Acked-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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nvme_tcp_mq_ops and nvme_tcp_admin_mq_ops are never modified and can be
made const to allow the compiler to put them in read-only memory.
Before:
text data bss dec hex filename
53102 6885 576 60563 ec93 drivers/nvme/host/tcp.o
After:
text data bss dec hex filename
53422 6565 576 60563 ec93 drivers/nvme/host/tcp.o
Signed-off-by: Rikard Falkeborn <rikard.falkeborn@gmail.com>
Acked-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Max Gurtovoy <maxg@mellanox.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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device_add_disk() is negated by del_gendisk().
alloc_disk_node() is negated by put_disk().
In nvme_alloc_ns(), device_add_disk() is one of the last things being
called in the success case, and only void functions are being called
after this. Therefore this call should not be negated in the error path.
The superfluous call to del_gendisk() leads to the following prints:
[ 7.839975] kobject: '(null)' (000000001ff73734): is not initialized, yet kobject_put() is being called.
[ 7.840865] WARNING: CPU: 2 PID: 361 at lib/kobject.c:736 kobject_put+0x70/0x120
Fixes: 33cfdc2aa696 ("nvme: enforce extended LBA format for fabrics metadata")
Signed-off-by: Niklas Cassel <niklas.cassel@wdc.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Max Gurtovoy <maxg@mellanox.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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to fixup conflicts in arch/x86/kernel/cpu/mce/core.c so MCE specific follow
up patches can be applied without creating a horrible merge conflict
afterwards.
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Convert the last oldstyle defined vector to IDTENTRY_SYSVEC:
- Implement the C entry point with DEFINE_IDTENTRY_SYSVEC
- Emit the ASM stub with DECLARE_IDTENTRY_SYSVEC
- Remove the ASM idtentries in 64-bit
- Remove the BUILD_INTERRUPT entries in 32-bit
- Remove the old prototypes
Fixup the related XEN code by providing the primary C entry point in x86 to
avoid cluttering the generic code with X86'isms.
No functional change.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Andy Lutomirski <luto@kernel.org>
Link: https://lore.kernel.org/r/20200521202119.741950104@linutronix.de
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Convert the XEN/PV hypercall to IDTENTRY:
- Emit the ASM stub with DECLARE_IDTENTRY
- Remove the ASM idtentry in 64-bit
- Remove the open coded ASM entry code in 32-bit
- Remove the old prototypes
The handler stubs need to stay in ASM code as they need corner case handling
and adjustment of the stack pointer.
Provide a new C function which invokes the entry/exit handling and calls
into the XEN handler on the interrupt stack if required.
The exit code is slightly different from the regular idtentry_exit() on
non-preemptible kernels. If the hypercall is preemptible and need_resched()
is set then XEN provides a preempt hypercall scheduling function.
Move this functionality into the entry code so it can use the existing
idtentry functionality.
[ mingo: Build fixes. ]
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Andy Lutomirski <luto@kernel.org>
Acked-by: Juergen Gross <jgross@suse.com>
Tested-by: Juergen Gross <jgross@suse.com>
Link: https://lore.kernel.org/r/20200521202118.055270078@linutronix.de
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As a preparatory change for making alloc_intr_gate() __init split
xen_callback_vector() into callback vector setup via hypercall
(xen_setup_callback_vector()) and interrupt gate allocation
(xen_alloc_callback_vector()).
xen_setup_callback_vector() is being called twice: on init and upon
system resume from xen_hvm_post_suspend(). alloc_intr_gate() only
needs to be called once.
Suggested-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lkml.kernel.org/r/20200428093824.1451532-2-vkuznets@redhat.com
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It is not the common usage to have a comma between the name and the
email address, so remove it.
Signed-off-by: Jean Delvare <jdelvare@suse.de>
Cc: Kukjin Kim <kgene@kernel.org>
Cc: Krzysztof Kozlowski <krzk@kernel.org>
Reviewed-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
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Fixes: f54736925a4f ("i2c: npcm7xx: Add support for slave mode for Nuvoton")
Signed-off-by: kernel test robot <lkp@intel.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
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git://anongit.freedesktop.org/drm/drm-misc into drm-next
In core, DRM connectors now notify userspace of hotplug events via
sysfs. In drivers, sun4i now uses 4 bits to store the clock's m divider;
ast sets up 24/32-bit color mode correctly.
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20200611075007.GA15098@linux-uq9g
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Currently the switch statement for format->cpp[0] value 4 assigns
color_index which is never read again and then falls through to the
default case and returns. This looks like a missing break statement
bug. Fix this by adding a break statement.
Addresses-Coverity: ("Unused value")
Fixes: 259d14a76a27 ("drm/ast: Split ast_set_vbios_mode_info()")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Tested-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20200610115804.1132338-1-colin.king@canonical.com
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