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If max_pfn is not initialized, the block layer may use wrong DMA masks.
Replace open-coded shifts by PFN_DOWN(), and drop the "0 on coldfire"
comment, as it is not even true on all Coldfires, let alone all
m68knommu platforms.
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Greg Ungerer <gerg@uclinux.org>
Tested-By: Greg Ungerer <gerg@uclinux.org>
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If max_pfn is not initialized, the various /proc/kpage* files are empty,
and selftests/vm/mlock2-tests will fail. max_pfn is also used by the
block layer to calculate DMA masks.
Switch from init_bootmem_node() to init_bootmem(), as there's only one
memory node on Sun-3. This will initialize min_low_pfn and max_low_pfn,
which was also not done before.
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Greg Ungerer <gerg@uclinux.org>
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If max_pfn is not initialized, the various /proc/kpage* files are empty,
and selftests/vm/mlock2-tests will fail. max_pfn is also used by the
block layer to calculate DMA masks.
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Greg Ungerer <gerg@uclinux.org>
Tested-by: Greg Ungerer <gerg@uclinux.org>
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If max_pfn is not initialized, the various /proc/kpage* files are empty,
and selftests/vm/mlock2-tests will fail. max_pfn is also used by the
block layer to calculate DMA masks.
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Greg Ungerer <gerg@uclinux.org>
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The snd_rawmidi_global_ops structures are never modified, so declare them
as const.
Done with the help of Coccinelle.
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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Merge misc fixes from Andrew Morton:
"A bunch of fixes"
* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
slub: mark the dangling ifdef #else of CONFIG_SLUB_DEBUG
slub: avoid irqoff/on in bulk allocation
slub: create new ___slab_alloc function that can be called with irqs disabled
mm: fix up sparse warning in gfpflags_allow_blocking
ocfs2: fix umask ignored issue
PM/OPP: add entry in MAINTAINERS
kernel/panic.c: turn off locks debug before releasing console lock
kernel/signal.c: unexport sigsuspend()
kasan: fix kmemleak false-positive in kasan_module_alloc()
fat: fix fake_offset handling on error path
mm/hugetlbfs: fix bugs in fallocate hole punch of areas with holes
mm/page-writeback.c: initialize m_dirty to avoid compile warning
various: fix pci_set_dma_mask return value checking
mm: loosen MADV_NOHUGEPAGE to enable Qemu postcopy on s390
mm: vmalloc: don't remove inexistent guard hole in remove_vm_area()
tools/vm/page-types.c: support KPF_IDLE
ncpfs: don't allow negative timeouts
configfs: allow dynamic group creation
MAINTAINERS: add Moritz as reviewer for FPGA Manager Framework
slab.h: sprinkle __assume_aligned attributes
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer fixes from Thomas Gleixner:
"Two timer fixlets from Arnd:
- Use proper constant size in the FSL timer driver
- Prevent a build error for legacy platforms"
* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
clocksource: Disallow drivers for ARCH_USES_GETTIMEOFFSET
clocksource/fsl: Avoid harmless 64-bit warnings
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for_each_available_child_of_node performs an of_node_get on each iteration,
so a break out of the loop requires an of_node_put.
A simplified version of the semantic patch that fixes this problem is as
follows (http://coccinelle.lip6.fr):
// <smpl>
@@
expression root,e;
local idexpression child;
@@
for_each_available_child_of_node(root, child) {
... when != of_node_put(child)
when != e = child
(
return child;
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+ of_node_put(child);
? return ...;
)
...
}
// </smpl>
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull irq fixes from Thomas Gleixner:
"Three fixes for the ARM GIC interrupt controller from Marc addressing
various shortcomings versus boot initialization and suspend/resume"
* 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
irqchip/gic: Add save/restore of the active state
irqchip/gic: Clear enable bits before restoring them
irqchip/gic: Make sure all interrupts are deactivated at boot
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Pull MTD fixes from Brian Norris:
- MAINTAINERS updates for brcmnand driver
- Fix reboot hangs seen when multiple NAND flash chips are registered
with the same controller
- Fix build issues on jz4740 NAND driver; the error was introduced in
4.3, so I guess nobody really cared, but we might as well fix it
* tag 'for-linus-20151120' of git://git.infradead.org/linux-mtd:
MAINTAINERS: brcmnand: Add co-maintainer for Broadcom SoCs
MAINTAINERS: brcmnand: Add Broadcom internal mailing-list
mtd: nand: fix shutdown/reboot for multi-chip systems
mtd: jz4740_nand: fix build on jz4740 after removing gpio.h
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Calling synchronize_irq() right before free_irq() is quite useless. On one
hand the IRQ can easily fire again before free_irq() is entered, on the
other hand free_irq() itself calls synchronize_irq() internally (in a race
condition free way) before any state associated with the IRQ is freed.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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WARN_ON() only takes a condition argument. I have changed these to
WARN() instead.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
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Add missing pm_runtime_mark_last_busy to apds9960_set_power_state
function.
Unless pm_runtime_mark_last_busy is called the
pm_runtime_put_autosuspend may put the device into suspend before the
delay time requested.
Signed-off-by: Matt Ranostay <mranostay@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
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Returning zero from the measurment function has the side effect of
corrupting the triggered buffer readings, better to use -EINVAL than
a zero measurement reading.
The INVALID status happens even it isn't out of range
sometimes roughly once every second or two. This can be from an
invalid second signal return path. Hence there are spurious zero
readings from the triggered buffer, and warning messages in the kernel
log.
Signed-off-by: Matt Ranostay <mranostay@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
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Starting with commit fd2bb310ca (Staging: iio: Move evgen interrupt
generation to irq_work) event processing is handled by calling
both the top half and the threaded part properly simulating real
hardware interrupts making use of threaded interrupts.
This way the processing is split in 2 parts:
* the IRQ handler that runs in IRQ context and only saves the event
timestamp
* the threaded handler that runs in process context, reads the events
and pushes the in the userspace.
If the IRQ handler returns IRQ_HANDLED the threaded handler is not
even being called since the interrupt is considered to be processed.
Because the iio dummy driver processes the events in the threaded
handler the IRQ handler must return IRQ_WAKE_THREAD so that the
threaded part would be awakened and called.
Signed-off-by: Ioana Ciornei <ciorneiioana@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
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Use the component framework to keep the display on till the
playback in progress.
Signed-off-by: Subhransu S. Prusty <subhransu.s.prusty@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
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This patch uses hdmi framework in video to fill audio infoframe.
Signed-off-by: Subhransu S. Prusty <subhransu.s.prusty@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
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The DAI ops are used for triggering HDMI streams and configuring
the parameters
Signed-off-by: Subhransu S. Prusty <subhransu.s.prusty@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
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Power up/down the AFG node during runtime resume/suspend.
Signed-off-by: Subhransu S. Prusty <subhransu.s.prusty@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
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This adds HDA based HDMI driver to be used in platforms like SKL
and onwards
Register the hdmi driver with hda bus and register dais.
Also parse the widget and initialize identified pin and converter
widgets.
For simplification, currently only one pin and one converter
widget are enabled on board, as well as limit the rates supported
to simples ones and not based on ELD. This things will come
eventually once basic support for this is merged
Signed-off-by: Subhransu S. Prusty <subhransu.s.prusty@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into asoc-intel
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The first argument to the WARN() macro has to be a condition. I'm sort
of disappointed that this code doesn't generate a compiler warning. I
guess -Wformat-extra-args doesn't work in the kernel.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
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This extends the structure definition of ext_device and adds
definition for dma_params which will be used when hdmi codec.
Signed-off-by: Subhransu S. Prusty <subhransu.s.prusty@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Acked-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Mark Brown <broonie@kernel.org>
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"data" is always NULL in this function. I think we should be passing
"&data" to sst_prepare_and_post_msg() instead of "data".
Fixes: 3d9ff34622ba ('ASoC: Intel: sst: add stream operations')
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Tested-by: Dinesh Mirche <dinesh.mirche@intel.com>
Acked-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
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As we are now passing the filter data as pointers to the drivers,
we can take the final step and also pass the filter function the
same way. I'm keeping this change separate, as there it's less
obvious that this is a net win.
Upsides of this are:
- The ASoC drivers are completely independent from the DMA engine
implementation, which simplifies the Kconfig logic and in theory
allows the same sound drivers to be built in a kernel that supports
different kinds of dmaengine drivers.
- Consistency with other subsystems and drivers
On the other hand, we have a few downsides:
- The s3c24xx-dma driver now needs to be built-in for the ac97 platform
device to be instantiated on s3c2440.
- samsung_dmaengine_pcm_config cannot be marked 'const' any more
because the filter function pointer needs to be set at runtime.
This is safe as long we don't have multiple different DMA engines
in thet same system at runtime, but is nonetheless ugly.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
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As this driver can now be compiled for ARM64, we get a new warning
as a result of passing a DMA filter data pointer through an 'int':
sound/soc/sh/fsi.c: In function 'fsi_dma_probe':
sound/soc/sh/fsi.c:1372:24: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
shdma_chan_filter, (void *)io->dma_id,
We already know that we only need the legacy filter function on
arch/sh, so we can hide the legacy DMA interface function
behind an #ifdef. This has the other advantage of no longer
depending on the shdma_chan_filter function to be visible.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Mark Brown <broonie@kernel.org>
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This is a little endian device, but so far we've been relying on
the regmap mmio bus handling this for us without explicitly
stating that fact. After commit 4a98da2164cf (regmap-mmio: Use
native endianness for read/write, 2015-10-29), the regmap mmio
bus will read/write with the __raw_*() IO accessors, instead of
using the readl/writel() APIs that do proper byte swapping for
little endian devices.
So if we're running on a big endian processor and haven't
specified the endianness explicitly in the regmap config or in
DT, we're going to switch from doing little endian byte swapping
to big endian accesses without byte swapping, leading to some
confusing results. Specify the endianness explicitly so that the
regmap core properly byte swaps the accesses for us.
Cc: Kenneth Westfield <kwestfie@codeaurora.org>
Cc: Kevin Hilman <khilman@linaro.org>
Cc: Tyler Baker <tyler.baker@linaro.org>
Cc: Simon Arlott <simon@fire.lp0.eu>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
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Liu reported that running certain parts of xfstests threw the
following error:
BUG: sleeping function called from invalid context at mm/page_alloc.c:3190
in_atomic(): 1, irqs_disabled(): 0, pid: 6, name: kworker/u16:0
3 locks held by kworker/u16:0/6:
#0: ("writeback"){++++.+}, at: [<ffffffff8107f083>] process_one_work+0x173/0x730
#1: ((&(&wb->dwork)->work)){+.+.+.}, at: [<ffffffff8107f083>] process_one_work+0x173/0x730
#2: (&type->s_umount_key#44){+++++.}, at: [<ffffffff811e6805>] trylock_super+0x25/0x60
CPU: 5 PID: 6 Comm: kworker/u16:0 Tainted: G OE 4.3.0+ #3
Hardware name: Red Hat KVM, BIOS Bochs 01/01/2011
Workqueue: writeback wb_workfn (flush-btrfs-108)
ffffffff81a3abab ffff88042e282ba8 ffffffff8130191b ffffffff81a3abab
0000000000000c76 ffff88042e282ba8 ffff88042e27c180 ffff88042e282bd8
ffffffff8108ed95 ffff880400000004 0000000000000000 0000000000000c76
Call Trace:
[<ffffffff8130191b>] dump_stack+0x4f/0x74
[<ffffffff8108ed95>] ___might_sleep+0x185/0x240
[<ffffffff8108eea2>] __might_sleep+0x52/0x90
[<ffffffff811817e8>] __alloc_pages_nodemask+0x268/0x410
[<ffffffff8109a43c>] ? sched_clock_local+0x1c/0x90
[<ffffffff8109a6d1>] ? local_clock+0x21/0x40
[<ffffffff810b9eb0>] ? __lock_release+0x420/0x510
[<ffffffff810b534c>] ? __lock_acquired+0x16c/0x3c0
[<ffffffff811ca265>] alloc_pages_current+0xc5/0x210
[<ffffffffa0577105>] ? rbio_is_full+0x55/0x70 [btrfs]
[<ffffffff810b7ed8>] ? mark_held_locks+0x78/0xa0
[<ffffffff81666d50>] ? _raw_spin_unlock_irqrestore+0x40/0x60
[<ffffffffa0578c0a>] full_stripe_write+0x5a/0xc0 [btrfs]
[<ffffffffa0578ca9>] __raid56_parity_write+0x39/0x60 [btrfs]
[<ffffffffa0578deb>] run_plug+0x11b/0x140 [btrfs]
[<ffffffffa0578e33>] btrfs_raid_unplug+0x23/0x70 [btrfs]
[<ffffffff812d36c2>] blk_flush_plug_list+0x82/0x1f0
[<ffffffff812e0349>] blk_sq_make_request+0x1f9/0x740
[<ffffffff812ceba2>] ? generic_make_request_checks+0x222/0x7c0
[<ffffffff812cf264>] ? blk_queue_enter+0x124/0x310
[<ffffffff812cf1d2>] ? blk_queue_enter+0x92/0x310
[<ffffffff812d0ae2>] generic_make_request+0x172/0x2c0
[<ffffffff812d0ad4>] ? generic_make_request+0x164/0x2c0
[<ffffffff812d0ca0>] submit_bio+0x70/0x140
[<ffffffffa0577b29>] ? rbio_add_io_page+0x99/0x150 [btrfs]
[<ffffffffa0578a89>] finish_rmw+0x4d9/0x600 [btrfs]
[<ffffffffa0578c4c>] full_stripe_write+0x9c/0xc0 [btrfs]
[<ffffffffa057ab7f>] raid56_parity_write+0xef/0x160 [btrfs]
[<ffffffffa052bd83>] btrfs_map_bio+0xe3/0x2d0 [btrfs]
[<ffffffffa04fbd6d>] btrfs_submit_bio_hook+0x8d/0x1d0 [btrfs]
[<ffffffffa05173c4>] submit_one_bio+0x74/0xb0 [btrfs]
[<ffffffffa0517f55>] submit_extent_page+0xe5/0x1c0 [btrfs]
[<ffffffffa0519b18>] __extent_writepage_io+0x408/0x4c0 [btrfs]
[<ffffffffa05179c0>] ? alloc_dummy_extent_buffer+0x140/0x140 [btrfs]
[<ffffffffa051dc88>] __extent_writepage+0x218/0x3a0 [btrfs]
[<ffffffff810b7ed8>] ? mark_held_locks+0x78/0xa0
[<ffffffffa051e2c9>] extent_write_cache_pages.clone.0+0x2f9/0x400 [btrfs]
[<ffffffffa051e422>] extent_writepages+0x52/0x70 [btrfs]
[<ffffffffa05001f0>] ? btrfs_set_inode_index+0x70/0x70 [btrfs]
[<ffffffffa04fcc17>] btrfs_writepages+0x27/0x30 [btrfs]
[<ffffffff81184df3>] do_writepages+0x23/0x40
[<ffffffff81212229>] __writeback_single_inode+0x89/0x4d0
[<ffffffff81212a60>] ? writeback_sb_inodes+0x260/0x480
[<ffffffff81212a60>] ? writeback_sb_inodes+0x260/0x480
[<ffffffff8121295f>] ? writeback_sb_inodes+0x15f/0x480
[<ffffffff81212ad2>] writeback_sb_inodes+0x2d2/0x480
[<ffffffff810b1397>] ? down_read_trylock+0x57/0x60
[<ffffffff811e6805>] ? trylock_super+0x25/0x60
[<ffffffff810d629f>] ? rcu_read_lock_sched_held+0x4f/0x90
[<ffffffff81212d0c>] __writeback_inodes_wb+0x8c/0xc0
[<ffffffff812130b5>] wb_writeback+0x2b5/0x500
[<ffffffff810b7ed8>] ? mark_held_locks+0x78/0xa0
[<ffffffff810660a8>] ? __local_bh_enable_ip+0x68/0xc0
[<ffffffff81213362>] ? wb_do_writeback+0x62/0x310
[<ffffffff812133c1>] wb_do_writeback+0xc1/0x310
[<ffffffff8107c3d9>] ? set_worker_desc+0x79/0x90
[<ffffffff81213842>] wb_workfn+0x92/0x330
[<ffffffff8107f133>] process_one_work+0x223/0x730
[<ffffffff8107f083>] ? process_one_work+0x173/0x730
[<ffffffff8108035f>] ? worker_thread+0x18f/0x430
[<ffffffff810802ed>] worker_thread+0x11d/0x430
[<ffffffff810801d0>] ? maybe_create_worker+0xf0/0xf0
[<ffffffff810801d0>] ? maybe_create_worker+0xf0/0xf0
[<ffffffff810858df>] kthread+0xef/0x110
[<ffffffff8108f74e>] ? schedule_tail+0x1e/0xd0
[<ffffffff810857f0>] ? __init_kthread_worker+0x70/0x70
[<ffffffff816673bf>] ret_from_fork+0x3f/0x70
[<ffffffff810857f0>] ? __init_kthread_worker+0x70/0x70
The issue is that we've got the software context pinned while
calling blk_flush_plug_list(), which flushes callbacks that
are allowed to sleep. btrfs and raid has such callbacks.
Flip the checks around a bit, so we can enable preempt a bit
earlier and flush plugs without having preempt disabled.
This only affects blk-mq driven devices, and only those that
register a single queue.
Reported-by: Liu Bo <bo.li.liu@oracle.com>
Tested-by: Liu Bo <bo.li.liu@oracle.com>
Cc: stable@kernel.org
Signed-off-by: Jens Axboe <axboe@fb.com>
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fsl8250_handle_irq is now used by the of_serial driver, and that fails
if it is a loadable module:
ERROR: "fsl8250_handle_irq" [drivers/tty/serial/of_serial.ko] undefined!
This exports the symbol to avoid randconfig errors.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Fixes: d43b54d269d2 ("serial: Enable Freescale 16550 workaround on arm")
Cc: Scott Wood <scottwood@freescale.com>
Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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8250_mid uses rational_best_approximation() function, so the
driver needs to select CONFIG_RATIONAL option.
This fixes build error when CONFIG_RATIONAL is not enabled:
drivers/built-in.o: In function `mid8250_set_termios':
8250_mid.c:(.text+0x10169a): undefined reference to `rational_best_approximation'
Reported-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Acked-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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The data to audit/record is in the 'from' buffer (ie., the input
read buffer).
Fixes: 72586c6061ab ("n_tty: Fix auditing support for cannonical mode")
Cc: stable <stable@vger.kernel.org> # 4.1+
Cc: Miloslav Trmač <mitr@redhat.com>
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Acked-by: Laura Abbott <labbott@fedoraproject.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Since commit 7d8c70d8048c ("serial: mctrl-gpio: rename init function"),
crisv32 either do not build or crash as follows.
Unable to handle kernel NULL pointer dereference
Linux 4.3.0-rc7-next-20151101 #1 Sun Nov 1 11:41:28 PST 2015
...
Call Trace: [<c0004a0e>] show_stack+0x0/0x9e
[<c004c0c0>] printk+0x0/0x2c
[<c00059d4>] show_registers+0x14a/0x1c2
[<c004c0c0>] printk+0x0/0x2c
[<c0004b52>] die_if_kernel+0x7c/0x9e
[<c0005346>] do_page_fault+0x32e/0x3e6
[<c01dc59c>] of_get_property+0x0/0x2c
[<c01e0558>] of_irq_parse_raw+0x12a/0x376
[<c01dc59c>] of_get_property+0x0/0x2c
[<c0053aca>] get_page_from_freelist+0x73e/0x856
[<c01dc59c>] of_get_property+0x0/0x2c
[<c0008912>] d_mmu_refill+0x10a/0x112
[<c01b488c>] devm_kmalloc+0x40/0x56
[<c01b47d0>] add_dr+0xc/0x1c
[<c01b4800>] devm_add_action+0x2/0x4e
[<c01abdbc>] mctrl_gpio_init_noauto+0x1c/0x76
[<c01abf9e>] mctrl_gpio_init+0x22/0x110
The function call in the etraxfs-uart driver was not renamed,
possibly due to interference with commit 7b9c5162c182 ("serial:
etraxfs-uart: use mctrl_gpio helpers for handling modem signals").
Fixes: 7d8c70d8048c ("serial: mctrl-gpio: rename init function")
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Acked-by: Niklas Cassel <nks@flawful.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Earlycon support for Freescale lpuart should only be enabled when
console support is enabled.
Fixes: 1d59b382f1c4 ("serial: fsl_lpuart: add earlycon support")
Acked-by: Stefan Agner <stefan@agner.ch>
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Use the device name when registering an interrupt so that multiple
ports don't all have the same interrupt name.
Signed-off-by: Simon Arlott <simon@fire.lp0.eu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Recent abstraction of tty buffer work introduced api to manage
tty input kworker; use it.
Fixes: e176058f0de5 ("tty: Abstract tty buffer work")
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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The correct lock order is atomic_write_lock => termios_rwsem, as
established by tty_write() => n_tty_write().
Fixes: c274f6ef1c666 ("tty: Hold termios_rwsem for tcflow(TCIxxx)")
Reported-and-Tested-by: Dmitry Vyukov <dvyukov@google.com>
Cc: <stable@vger.kernel.org> # v3.18+
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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The #ifdef of CONFIG_SLUB_DEBUG is located very far from the associated
#else. For readability mark it with a comment.
Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
Acked-by: Christoph Lameter <cl@linux.com>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: David Rientjes <rientjes@google.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Alexander Duyck <alexander.h.duyck@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Use the new function that can do allocation while interrupts are disabled.
Avoids irq on/off sequences.
Signed-off-by: Christoph Lameter <cl@linux.com>
Cc: Jesper Dangaard Brouer <brouer@redhat.com>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: David Rientjes <rientjes@google.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Alexander Duyck <alexander.h.duyck@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Bulk alloc needs a function like that because it enables interrupts before
calling __slab_alloc which promptly disables them again using the expensive
local_irq_save().
Signed-off-by: Christoph Lameter <cl@linux.com>
Cc: Jesper Dangaard Brouer <brouer@redhat.com>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: David Rientjes <rientjes@google.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Alexander Duyck <alexander.h.duyck@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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sparse says:
include/linux/gfp.h:274:26: warning: incorrect type in return expression (different base types)
include/linux/gfp.h:274:26: expected bool
include/linux/gfp.h:274:26: got restricted gfp_t
...add a forced cast to silence the warning.
Signed-off-by: Jeff Layton <jeff.layton@primarydata.com>
Cc: Mel Gorman <mgorman@techsingularity.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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New created file's mode is not masked with umask, and this makes umask not
work for ocfs2 volume.
Fixes: 702e5bc ("ocfs2: use generic posix ACL infrastructure")
Signed-off-by: Junxiao Bi <junxiao.bi@oracle.com>
Cc: Gang He <ghe@suse.com>
Cc: Mark Fasheh <mfasheh@suse.de>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Add entry for operating performance points into MAINTAINERS file. This
will also allow get_maintainers to list OPP stakeholders properly.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Stephen Boyd <sboyd@codeaurora.org>
Cc: Rafael Wysocki <rjw@rjwysocki.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Commit 08d78658f393 ("panic: release stale console lock to always get the
logbuf printed out") introduced an unwanted bad unlock balance report when
panic() is called directly and not from OOPS (e.g. from out_of_memory()).
The difference is that in case of OOPS we disable locks debug in
oops_enter() and on direct panic call nobody does that.
Fixes: 08d78658f393 ("panic: release stale console lock to always get the logbuf printed out")
Reported-by: kernel test robot <ying.huang@linux.intel.com>
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Cc: HATAYAMA Daisuke <d.hatayama@jp.fujitsu.com>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Jiri Kosina <jkosina@suse.cz>
Cc: Baoquan He <bhe@redhat.com>
Cc: Prarit Bhargava <prarit@redhat.com>
Cc: Xie XiuQi <xiexiuqi@huawei.com>
Cc: Seth Jennings <sjenning@redhat.com>
Cc: "K. Y. Srinivasan" <kys@microsoft.com>
Cc: Jan Kara <jack@suse.cz>
Cc: Petr Mladek <pmladek@suse.cz>
Cc: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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sigsuspend() is nowhere used except in signal.c itself, so we can mark it
static do not pollute the global namespace.
But this patch is more than a boring cleanup patch, it fixes a real issue
on UserModeLinux. UML has a special console driver to display ttys using
xterm, or other terminal emulators, on the host side. Vegard reported
that sometimes UML is unable to spawn a xterm and he's facing the
following warning:
WARNING: CPU: 0 PID: 908 at include/linux/thread_info.h:128 sigsuspend+0xab/0xc0()
It turned out that this warning makes absolutely no sense as the UML
xterm code calls sigsuspend() on the host side, at least it tries. But
as the kernel itself offers a sigsuspend() symbol the linker choose this
one instead of the glibc wrapper. Interestingly this code used to work
since ever but always blocked signals on the wrong side. Some recent
kernel change made the WARN_ON() trigger and uncovered the bug.
It is a wonderful example of how much works by chance on computers. :-)
Fixes: 68f3f16d9ad0f1 ("new helper: sigsuspend()")
Signed-off-by: Richard Weinberger <richard@nod.at>
Reported-by: Vegard Nossum <vegard.nossum@oracle.com>
Tested-by: Vegard Nossum <vegard.nossum@oracle.com>
Acked-by: Oleg Nesterov <oleg@redhat.com>
Cc: <stable@vger.kernel.org> [3.5+]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Kmemleak reports the following leak:
unreferenced object 0xfffffbfff41ea000 (size 20480):
comm "modprobe", pid 65199, jiffies 4298875551 (age 542.568s)
hex dump (first 32 bytes):
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
backtrace:
[<ffffffff82354f5e>] kmemleak_alloc+0x4e/0xc0
[<ffffffff8152e718>] __vmalloc_node_range+0x4b8/0x740
[<ffffffff81574072>] kasan_module_alloc+0x72/0xc0
[<ffffffff810efe68>] module_alloc+0x78/0xb0
[<ffffffff812f6a24>] module_alloc_update_bounds+0x14/0x70
[<ffffffff812f8184>] layout_and_allocate+0x16f4/0x3c90
[<ffffffff812faa1f>] load_module+0x2ff/0x6690
[<ffffffff813010b6>] SyS_finit_module+0x136/0x170
[<ffffffff8239bbc9>] system_call_fastpath+0x16/0x1b
[<ffffffffffffffff>] 0xffffffffffffffff
kasan_module_alloc() allocates shadow memory for module and frees it on
module unloading. It doesn't store the pointer to allocated shadow memory
because it could be calculated from the shadowed address, i.e.
kasan_mem_to_shadow(addr).
Since kmemleak cannot find pointer to allocated shadow, it thinks that
memory leaked.
Use kmemleak_ignore() to tell kmemleak that this is not a leak and shadow
memory doesn't contain any pointers.
Signed-off-by: Andrey Ryabinin <aryabinin@virtuozzo.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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For the root directory, . and .. are faked (using dir_emit_dots()) and
ctx->pos is reset from 2 to 0.
A corrupted root directory could cause fat_get_entry() to fail, but
->iterate() (fat_readdir()) reports progress to the VFS (with ctx->pos
rewound to 0), so any following calls to ->iterate() continue to return
the same entries again and again.
The result is that userspace will never see the end of the directory,
causing e.g. 'ls' to hang in a getdents() loop.
[hirofumi@mail.parknet.co.jp: cleanup and make sure to correct fake_offset]
Reported-by: Vegard Nossum <vegard.nossum@oracle.com>
Tested-by: Vegard Nossum <vegard.nossum@oracle.com>
Signed-off-by: Richard Weinberger <richard.weinberger@gmail.com>
Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Hugh Dickins pointed out problems with the new hugetlbfs fallocate hole
punch code. These problems are in the routine remove_inode_hugepages and
mostly occur in the case where there are holes in the range of pages to be
removed. These holes could be the result of a previous hole punch or
simply sparse allocation. The current code could access pages outside the
specified range.
remove_inode_hugepages handles both hole punch and truncate operations.
Page index handling was fixed/cleaned up so that the loop index always
matches the page being processed. The code now only makes a single pass
through the range of pages as it was determined page faults could not race
with truncate. A cond_resched() was added after removing up to
PAGEVEC_SIZE pages.
Some totally unnecessary code in hugetlbfs_fallocate() that remained from
early development was also removed.
Tested with fallocate tests submitted here:
http://librelist.com/browser//libhugetlbfs/2015/6/25/patch-tests-add-tests-for-fallocate-system-call/
And, some ftruncate tests under development
Fixes: b5cec28d36f5 ("hugetlbfs: truncate_hugepages() takes a range of pages")
Signed-off-by: Mike Kravetz <mike.kravetz@oracle.com>
Acked-by: Hugh Dickins <hughd@google.com>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Cc: Davidlohr Bueso <dave@stgolabs.net>
Cc: "Hillf Danton" <hillf.zj@alibaba-inc.com>
Cc: <stable@vger.kernel.org> [4.3]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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When building kernel with gcc 5.2, the below warning is raised:
mm/page-writeback.c: In function 'balance_dirty_pages.isra.10':
mm/page-writeback.c:1545:17: warning: 'm_dirty' may be used uninitialized in this function [-Wmaybe-uninitialized]
unsigned long m_dirty, m_thresh, m_bg_thresh;
The m_dirty{thresh, bg_thresh} are initialized in the block of "if
(mdtc)", so if mdts is null, they won't be initialized before being used.
Initialize m_dirty to zero, also initialize m_thresh and m_bg_thresh to
keep consistency.
They are used later by if condition: !mdtc || m_dirty <=
dirty_freerun_ceiling(m_thresh, m_bg_thresh)
If mdtc is null, dirty_freerun_ceiling will not be called at all, so the
initialization will not change any behavior other than just ceasing the
compile warning.
(akpm: the patch actually reduces .text size by ~20 bytes on gcc-4.x.y)
[akpm@linux-foundation.org: add comment]
Signed-off-by: Yang Shi <yang.shi@linaro.org>
Cc: Tejun Heo <tj@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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pci_set_dma_mask returns a negative errno value, not a bool like
pci_dma_supported. This of course was just a giant test for attention :)
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reported-by: Jongman Heo <jongman.heo@samsung.com>
Tested-by: Jongman Heo <jongman.heo@samsung.com> [pcnet32]
Acked-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Cc: Hans Verkuil <hverkuil@xs4all.nl>
Cc: Antti Palosaari <crope@iki.fi>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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MADV_NOHUGEPAGE processing is too restrictive. kvm already disables
hugepage but hugepage_madvise() takes the error path when we ask to turn
on the MADV_NOHUGEPAGE bit and the bit is already on. This causes Qemu's
new postcopy migration feature to fail on s390 because its first action is
to madvise the guest address space as NOHUGEPAGE. This patch modifies the
code so that the operation succeeds without error now.
For consistency reasons do the same for MADV_HUGEPAGE.
Signed-off-by: Jason J. Herne <jjherne@linux.vnet.ibm.com>
Reviewed-by: Andrea Arcangeli <aarcange@redhat.com>
Acked-by: Christian Borntraeger <borntraeger@de.ibm.com>
Acked-by: David Rientjes <rientjes@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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