Commit Graph

494481 Commits

Author SHA1 Message Date
Arnd Bergmann
a572c9dd83 Merge tag 'samsung-defconfig-v3.18' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung into fixes
Pull "Samsung defconfig update for v3.18" from Kukjin Kim:

- enable max77802 rtc and clock drivers for exynos_defconfig
  : enable the kernel config options to have the drivers for
    max77802 including rtc and 2-ch 32kHz clock outputs

* tag 'samsung-defconfig-v3.18' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung:
  ARM: exynos_defconfig: Enable max77802 rtc and clock drivers

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2014-11-27 14:26:52 +01:00
Arnd Bergmann
d168c852d3 Merge tag 'samsung-fixes-v3.18' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung into fixes
Pull "Samsung fixes for v3.18" from Kukjin Kim:

- explicitly set dr_mode on exynos5250-snow
  this is required when kernel is built with USB gadget support.

* tag 'samsung-fixes-v3.18' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung:
  ARM: dts: Explicitly set dr_mode on exynos5250-snow

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2014-11-27 14:24:41 +01:00
Marc Zyngier
9a343b9eb8 ARM: tegra: irq: fix buggy usage of irq_data irq field
The crazy gic_arch_extn thing that Tegra uses contains multiple
references to the irq field in struct irq_data, and uses this
to directly poke hardware register.

But irq is the *virtual* irq number, something that has nothing
to do with the actual HW irq (stored in the hwirq field). And once
we put the stacked domain code in action, the whole thing explodes,
as these two values are *very* different:

root@bacon-fat:~# cat /proc/interrupts
            CPU0       CPU1
 16:      25801       2075       GIC  29  twd
 17:          0          0       GIC  73  timer0
112:          0          0      GPIO  58  c8000600.sdhci cd
123:          0          0      GPIO  69  c8000200.sdhci cd
279:       1126          0       GIC 122  serial
281:          0          0       GIC  70  7000c000.i2c
282:          0          0       GIC 116  7000c400.i2c
283:          0          0       GIC 124  7000c500.i2c
284:        300          0       GIC  85  7000d000.i2c
[...]

Just replacing all instances of irq with hwirq fixes the issue.

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Acked-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2014-11-27 14:01:55 +01:00
Pablo Neira Ayuso
b59eaf9e28 netfilter: combine IPv4 and IPv6 nf_nat_redirect code in one module
This resolves linking problems with CONFIG_IPV6=n:

net/built-in.o: In function `redirect_tg6':
xt_REDIRECT.c:(.text+0x6d021): undefined reference to `nf_nat_redirect_ipv6'

Reported-by: Andreas Ruprecht <rupran@einserver.de>
Reported-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2014-11-27 13:08:42 +01:00
Alvaro Neira
1b63d4b9b5 netfilter: nf_tables_bridge: set the pktinfo for IPv4/IPv6 traffic
This patch adds the missing bits to allow to match per meta l4proto from
the bridge. Example:

  nft add rule bridge filter input ether type {ip, ip6} meta l4proto udp counter

Signed-off-by: Alvaro Neira Ayuso <alvaroneay@gmail.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2014-11-27 13:08:29 +01:00
Alvaro Neira
68b0faa87d netfilter: nf_tables_bridge: export nft_reject_ip*hdr_validate functions
This patch exports the functions nft_reject_iphdr_validate and
nft_reject_ip6hdr_validate to use it in follow up patches.
These functions check if the IPv4/IPv6 header is correct.

Signed-off-by: Alvaro Neira Ayuso <alvaroneay@gmail.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2014-11-27 12:58:05 +01:00
Florian Westphal
c41884ce05 netfilter: conntrack: avoid zeroing timer
add a __nfct_init_offset annotation member to struct nf_conn to make
it clear which members are covered by the memset when the conntrack
is allocated.

This avoids zeroing timer_list and ct_net; both are already inited
explicitly.

Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2014-11-27 12:41:06 +01:00
Takashi Iwai
acf403ecc4 Merge branch 'topic/usb-resume' into for-next
Merge the proper mixer resume support for quirk codes.
2014-11-27 12:40:51 +01:00
Florian Westphal
abc86d0f99 netfilter: xt_recent: relax ip_pkt_list_tot restrictions
The maximum value for the hitcount parameter is given by
"ip_pkt_list_tot" parameter (default: 20).

Exceeding this value on the command line will cause the rule to be
rejected.  The parameter is also readonly, i.e. it cannot be changed
without module unload or reboot.

Store size per table, then base nstamps[] size on the hitcount instead.

The module parameter is retained for backwards compatibility.

Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2014-11-27 12:40:31 +01:00
Lars-Peter Clausen
c4ee42a050 ASoC: twl6040: Cleanup manual bias level transitions
Set the CODEC driver's suspend_bias_off flag rather than manually going to
SND_SOC_BIAS_OFF in suspend and SND_SOC_BIAS_STANDBY in resume. This makes
the code a bit shorter and cleaner.

Since the ASoC core now takes care of setting the bias level to
SND_SOC_BIAS_OFF when removing the CODEC there is no need to do it manually
anymore either.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Mark Brown <broonie@kernel.org>
2014-11-27 11:18:27 +00:00
Lars-Peter Clausen
3ec8d20364 ASoC: twl4030: Cleanup manual bias level transitions
Since the ASoC core now takes care of setting the bias level to
SND_SOC_BIAS_OFF when removing the CODEC there is no need to do it manually
anymore.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Mark Brown <broonie@kernel.org>
2014-11-27 11:18:05 +00:00
Lars-Peter Clausen
90db15e17e ASoC: tlv320dac33: Cleanup manual bias level transitions
Since the ASoC core now takes care of setting the bias level to
SND_SOC_BIAS_OFF when removing the CODEC there is no need to do it manually
anymore.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Mark Brown <broonie@kernel.org>
2014-11-27 11:17:34 +00:00
Lars-Peter Clausen
68f438378c ASoC: tlv320aic3x: Cleanup manual bias level transitions
Since the ASoC core now takes care of setting the bias level to
SND_SOC_BIAS_OFF when removing the CODEC there is no need to do it manually
anymore.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Mark Brown <broonie@kernel.org>
2014-11-27 11:17:02 +00:00
Lars-Peter Clausen
f10c0a71e6 ASoC: tlv320aic32x4: Cleanup manual bias level transitions
Set the CODEC driver's suspend_bias_off flag rather than manually going to
SND_SOC_BIAS_OFF in suspend and SND_SOC_BIAS_STANDBY in resume. This makes
the code a bit shorter and cleaner.

Since the ASoC core now takes care of setting the bias level to
SND_SOC_BIAS_OFF when removing the CODEC there is no need to do it manually
anymore either.

The manual transition to SND_SOC_BIAS_STANDBY at the end of CODEC probe()
can also be removed as the core will automatically do this after the CODEC
has been probed.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Mark Brown <broonie@kernel.org>
2014-11-27 11:16:35 +00:00
Lars-Peter Clausen
a43a262901 ASoC: tlv320aix31xx: Cleanup manual bias level transitions
Set the CODEC driver's suspend_bias_off flag rather than manually going to
SND_SOC_BIAS_OFF in suspend and SND_SOC_BIAS_STANDBY in resume. This makes
the code a bit shorter and cleaner.

Since the ASoC core now takes care of setting the bias level to
SND_SOC_BIAS_OFF when removing the CODEC there is no need to do it manually
anymore either.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Acked-by: Jyri Sarha <jsarha@ti.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2014-11-27 11:16:07 +00:00
Lars-Peter Clausen
aabb87f003 ASoC: tlv320aic23: Cleanup manual bias level transitions
Set the CODEC driver's suspend_bias_off flag rather than manually going to
SND_SOC_BIAS_OFF in suspend and SND_SOC_BIAS_STANDBY in resume. This makes
the code a bit shorter and cleaner.

Since the ASoC core now takes care of setting the bias level to
SND_SOC_BIAS_OFF when removing the CODEC there is no need to do it manually
anymore either.

The manual transition to SND_SOC_BIAS_STANDBY at the end of CODEC probe()
can also be removed as the core will automatically do this after the CODEC
has been probed.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Mark Brown <broonie@kernel.org>
2014-11-27 11:15:27 +00:00
Lars-Peter Clausen
0eef4ed597 ASoC: sn95031: Cleanup bias level transitions
Since the ASoC core now takes care of setting the bias level to
SND_SOC_BIAS_OFF when removing the CODEC there is no need to do it manually
anymore.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Mark Brown <broonie@kernel.org>
2014-11-27 11:15:00 +00:00
Lars-Peter Clausen
68d27bc63c ASoC: lm49453: Cleanup manual bias level transitions
Since the ASoC core now takes care of setting the bias level to
SND_SOC_BIAS_OFF when removing the CODEC there is no need to do it manually
anymore.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Mark Brown <broonie@kernel.org>
2014-11-27 11:14:39 +00:00
Lars-Peter Clausen
6200b75a8b ASoC: cq93vc: Cleanup manual bias level transitions
Remove the manual transition back to SND_SOC_BIAS_STANDBY in resume. This
is already be automatically handled by the ASoC core.

Since the ASoC core now takes care of setting the bias level to
SND_SOC_BIAS_OFF when removing the CODEC there is no need to do it manually
anymore either.

The manual transition to SND_SOC_BIAS_STANDBY at the end of CODEC probe()
can also be removed as the core will automatically do this after the CODEC
has been probed. While we are at it also remove the unused codec field from
the cq93vc struct so the whole probe function can be removed.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Mark Brown <broonie@kernel.org>
2014-11-27 11:11:50 +00:00
Lars-Peter Clausen
002fe7c831 ASoC: cq93vc: Remove unused state struct
While two of the fields in the cq93vc driver state struct are initialized
none of them are ever acutally read again. So remove the whole struct.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Mark Brown <broonie@kernel.org>
2014-11-27 11:11:30 +00:00
Jie Yang
525b8634d8 ASoC: Intel: Remove useless loopback volume control for Broadwell
On Broadwell, the ADSP FW don't support loopback record volume tuning,
so here remove this control.

Signed-off-by: Jie Yang <yang.jie@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2014-11-27 11:00:50 +00:00
Beniamino Galvani
1327ecd47f spi: meson: Select REGMAP_MMIO
The Meson SPIFC driver uses regmap mmio functions and so it must
select REGMAP_MMIO to avoid the following build error:

spi-meson-spifc.c: undefined reference to `devm_regmap_init_mmio_clk'

Reported-by: Jim Davis <jim.epost@gmail.com>
Signed-off-by: Beniamino Galvani <b.galvani@gmail.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2014-11-27 11:00:16 +00:00
Dan Carpenter
d98123a76b ASoC: sigmadsp: uninitialized variable in sigmadsp_activate_ctrl()
The "changed" variable should be set to false at the start.

Fixes: a35daac77a ('ASoC: sigmadsp: Add support for fw v2')
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
2014-11-27 10:59:33 +00:00
Thomas Gleixner
89de77a8c5 Merge branch 'clockevents/3.19' of http://git.linaro.org/people/daniel.lezcano/linux into timers/core
Daniel Lezcano muttered:

 * Marvell timer updates from Ezequiel Garcia
   - Add missing clock enable calls for armada
   - Change source clock for clocksource and watchdog
 * SIRF timer updates from Yanchang Li
   - Make clock rate configurable
2014-11-27 11:47:38 +01:00
Zidan Wang
3ad5e861a7 ASoC: wm8960: Move register initialisation to I2C driver probe()
We must ensure that the clocking configuration is valid as rapidly as possible.
And do software reset before the others registers updates, or the registers
will be reset to the default state.

Signed-off-by: Zidan Wang <b50113@freescale.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2014-11-27 10:35:02 +00:00
Steven Walter
f6af675ef5 Bluetooth: Automatically flushable packets aren't allowed on LE links
The Bluetooth spec states that automatically flushable packets may not
be sent over a LE-U link.

Signed-off-by: Steven Walter <stevenrwalter@gmail.com>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2014-11-27 12:12:27 +02:00
Dan Carpenter
69eba10e60 ALSA: hda - using uninitialized data
In olden times the snd_hda_param_read() function always set "*start_id"
but in 2007 we introduced a new return and it causes uninitialized data
bugs in a couple of the callers: print_codec_info() and
hdmi_parse_codec().

Fixes: e8a7f136f5 ('[ALSA] hda-intel - Improve HD-audio codec probing robustness')
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2014-11-27 09:34:41 +01:00
Phillip Lougher
9c06a46f15 Squashfs: add LZ4 compression support
Add support for reading file systems compressed with the
LZ4 compression algorithm.

This patch adds the LZ4 decompressor wrapper code.

Signed-off-by: Phillip Lougher <phillip@squashfs.org.uk>
2014-11-27 07:44:11 +00:00
Ashwin Chaugule
86c22f8c9a Mailbox: Add support for Platform Communication Channel
ACPI 5.0+ spec defines a generic mode of communication
between the OS and a platform such as the BMC. This medium
(PCC) is typically used by CPPC (ACPI CPU Performance management),
RAS (ACPI reliability protocol) and MPST (ACPI Memory power
states).

This patch adds PCC support as a Mailbox Controller. As of
ACPI v5.1 there is no provision for clients to lookup mailbox
controllers in a way that Linux expects. e.g. in DT the clients
can list the mailboxes they can associate with in the DT binding
and then provide a unique index to lookup a channel within a mailbox.
Since the ACPI spec doesn't have anything similar, we introduce a
mailbox controller specific API so that when the client calls it,
we know to lookup in the context of a specific controller. This
also helps in keeping a consistent interface across DT and ACPI
for such drivers.

This patch implements basic PCC support using the ACPI v5.1
structures. IRQ mode support will be provided as follow up patches.

Signed-off-by: Ashwin Chaugule <ashwin.chaugule@linaro.org>
Reviewed-by: Mark Brown <broonie@kernel.org>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
2014-11-27 12:51:09 +05:30
Suman Anna
8841a66aaa mailbox/omap: adapt to the new mailbox framework
The OMAP mailbox driver and its existing clients (remoteproc
for OMAP4+) are adapted to use the generic mailbox framework.

The main changes for the adaptation are:
  - The tasklet used for Tx is replaced with the state machine from
    the generic mailbox framework. The workqueue used for processing
    the received messages stays intact for minimizing the effects on
    the OMAP mailbox clients.
  - The existing exported client API, omap_mbox_get, omap_mbox_put and
    omap_mbox_send_msg are deleted, as the framework provides equivalent
    functionality. A OMAP-specific omap_mbox_request_channel is added
    though to support non-DT way of requesting mailboxes.
  - The OMAP mailbox driver is integrated with the mailbox framework
    through the proper implementations of mbox_chan_ops, except for
    .last_tx_done and .peek_data. The OMAP mailbox driver does not need
    these ops, as it is completely interrupt driven.
  - The OMAP mailbox driver uses a custom of_xlate controller ops that
    allows phandles for the pargs specifier instead of indexing to avoid
    any channel registration order dependencies.
  - The new framework does not support multiple clients operating on a
    single channel, so the reference counting logic is simplified.
  - The remoteproc driver (current client) is adapted to use the new API.
    The notifier callbacks used within this client is replaced with the
    regular callbacks from the newer framework.
  - The exported OMAP mailbox API are limited to omap_mbox_save_ctx,
    omap_mbox_restore_ctx, omap_mbox_enable_irq & omap_mbox_disable_irq,
    with the signature modified to take in the new mbox_chan handle instead
    of the OMAP specific omap_mbox handle. The first 2 will be removed when
    the OMAP mailbox driver is adapted to runtime_pm. The other exported
    API omap_mbox_request_channel will be removed once existing legacy
    users are converted to DT.

Signed-off-by: Suman Anna <s-anna@ti.com>
Cc: Ohad Ben-Cohen <ohad@wizery.com>
Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
2014-11-27 12:51:04 +05:30
Sudeep Holla
97b0c7bd2e mailbox: add tx_prepare client callback
If the mailbox controller expects the payload is in place before
initiating the transmit, then it's impossible to reuse the list
maintained by core mailbox code currently. Maintaining another list
for sending the message in the controller seems totally unnecessary
as core mailbox library already provides that feature.

This patch introduces tx_prepare callback in mbox_client which
can be used by the core mailbox library before initiating the
transaction through mbox->ops->send_data. The client driver can
implement this callback to ensure the payload is copied to the
shared memory.

Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
2014-11-27 12:50:59 +05:30
Andrew Bresticker
52a49306d7 mailbox: Don't unnecessarily re-arm the polling timer
poll_txdone() will unconditionally re-arm the polling timer if there was
an active request, even if the active request completed and no other
requests were submitted.  This is fixed by:
 - only re-arming the timer if the controller reported that the current
   transmission has not completed, and,
 - moving the call to poll_txdone() into msg_submit() so that the
   controller gets polled (and the timer re-armed, if necessary) whenever
   a new message is submitted.

Signed-off-by: Andrew Bresticker <abrestic@chromium.org>
Reviewed-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
2014-11-27 12:21:27 +05:30
Dan Carpenter
fc625960ed USB: adutux: NULL dereferences on disconnect
Both "dev->udev" and "interface->dev" are NULL.  These printks are not
very interesting so I just deleted them.

Fixes: 03270634e2 ('USB: Add ADU support for Ontrak ADU devices')
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-11-26 19:50:15 -08:00
Markus Elfring
daa3d67fa3 firmware class: Deletion of an unnecessary check before the function call "vunmap"
The vunmap() function performes also input parameter validation. Thus the test
around the call is not needed.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-11-26 19:41:15 -08:00
Kweh, Hock Leong
000deba73a firmware loader: fix hung task warning dump
When using request_firmware_nowait() with FW_ACTION_NOHOTPLUG param to
expose user helper interface, if the user do not react immediately, after
120 seconds there will be a hung task warning message dumped as below:

[ 3000.784235] INFO: task kworker/0:0:8259 blocked for more than 120 seconds.
[ 3000.791281]       Tainted: G            E 3.16.0-rc1-yocto-standard #41
[ 3000.798082] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 3000.806072] kworker/0:0     D cd0075c8     0  8259      2 0x00000000
[ 3000.812765] Workqueue: events request_firmware_work_func
[ 3000.818253]  cd375e18 00000046 0000000e cd0075c8 000000f0 cd40ea00 cd375fec 1b883e89
[ 3000.826374]  0000026b cd40ea00 80000000 00000001 cd0075c8 00000000 cd375de4 c119917f
[ 3000.834492]  cd563360 cd375df4 c119a0ab cd563360 00000000 cd375e24 c119a1d6 00000000
[ 3000.842616] Call Trace:
[ 3000.845252]  [<c119917f>] ? kernfs_next_descendant_post+0x3f/0x50
[ 3000.851543]  [<c119a0ab>] ? kernfs_activate+0x6b/0xc0
[ 3000.856790]  [<c119a1d6>] ? kernfs_add_one+0xd6/0x130
[ 3000.862047]  [<c15fdb02>] schedule+0x22/0x60
[ 3000.866548]  [<c15fd195>] schedule_timeout+0x175/0x1d0
[ 3000.871887]  [<c119b391>] ? __kernfs_create_file+0x71/0xa0
[ 3000.877574]  [<c119bb9a>] ? sysfs_add_file_mode_ns+0xaa/0x180
[ 3000.883533]  [<c15fe84f>] wait_for_completion+0x6f/0xb0
[ 3000.888961]  [<c1065200>] ? wake_up_process+0x40/0x40
[ 3000.894219]  [<c13cb600>] _request_firmware+0x750/0x9f0
[ 3000.899666]  [<c1382a7f>] ? n_tty_receive_buf2+0x1f/0x30
[ 3000.905200]  [<c13cba02>] request_firmware_work_func+0x22/0x50
[ 3000.911235]  [<c10550d2>] process_one_work+0x122/0x380
[ 3000.916571]  [<c1055859>] worker_thread+0xf9/0x470
[ 3000.921555]  [<c1055760>] ? create_and_start_worker+0x50/0x50
[ 3000.927497]  [<c1055760>] ? create_and_start_worker+0x50/0x50
[ 3000.933448]  [<c105a5ff>] kthread+0x9f/0xc0
[ 3000.937850]  [<c15ffd40>] ret_from_kernel_thread+0x20/0x30
[ 3000.943548]  [<c105a560>] ? kthread_worker_fn+0x100/0x100

This patch change the wait_for_completion() function call to
wait_for_completion_interruptible() function call for solving the issue.

Cc: Matt Fleming <matt.fleming@intel.com>
Signed-off-by: Kweh, Hock Leong <hock.leong.kweh@intel.com>
Acked-by: Ming Lei <ming.lei@canonical.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-11-26 19:41:15 -08:00
Johannes Berg
d45333294d devcoredump: provide a one-way disable function
Since device/firmware coredumps can contain private data, it can
be desirable to turn them off unconditionally to be certain that
no such data will be collected by the system.

To achieve this, provide a "disabled" sysfs class attribute that
can only be changed from 0 to 1 and not back. Upon disabling,
discard existing coredumps and stop storing new ones.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-11-26 19:40:12 -08:00
Joe Perches
e135303bd5 device: Add dev_<level>_once variants
Add the equivalents to pr_<level>_once.

Suggested-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Joe Perches <joe@perches.com>
Acked-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-11-26 19:40:11 -08:00
Arend van Spriel
d32394fae9 ath: ath9k: use debugfs_create_devm_seqfile() helper for seq_file entries
Use the helper to get rid of the file operations per debugfs file. The
struct ath9k_softc pointer is set as device driver data to be obtained
in the seq_file read operation.

Signed-off-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-11-26 19:38:37 -08:00
Arend van Spriel
631bee257b ath: use seq_file api for ath9k debugfs files
The debugfs files that are defined in debug.c which are read-only
and using a simple_open as .open file operation have been modified
to use the single_open seq_file API. This simplifies the read
functions defining the file contents.

Signed-off-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-11-26 19:38:37 -08:00
Arend van Spriel
98210b7f73 debugfs: add helper function to create device related seq_file
This patch adds a helper function that simplifies adding a
so-called single_open sequence file for device drivers. The
calling device driver needs to provide a read function and
a device pointer. The field struct seq_file::private will
reference the device pointer upon call to the read function
so the driver can obtain his data from it and do its task
of providing the file content using seq_printf() calls and
alike. Using this helper function also gets rid of the need
to specify file operations per debugfs file.

Signed-off-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-11-26 19:38:37 -08:00
Dmitry Eremin-Solenikov
50d1e7d107 serial: pxa: hold port.lock when reporting modem line changes
Both uart_handle_dcd_change() and uart_handle_cts_change() require a
port lock to be held and will emit a warning when lockdep is enabled.
Held corresponding lock.

This fixes the following warnings:

------------[ cut here ]------------
WARNING: CPU: 0 PID: 0 at drivers/tty/serial/serial_core.c:2760 uart_handle_dcd_change+0xc8/0xf8()
Modules linked in:
CPU: 0 PID: 0 Comm: swapper Not tainted 3.18.0-rc5+ #26
[<c000dff8>] (unwind_backtrace) from [<c000bc70>] (show_stack+0x10/0x14)
[<c000bc70>] (show_stack) from [<c00192ac>] (warn_slowpath_common+0x6c/0x8c)
[<c00192ac>] (warn_slowpath_common) from [<c00192e8>] (warn_slowpath_null+0x1c/0x24)
[<c00192e8>] (warn_slowpath_null) from [<c0182984>] (uart_handle_dcd_change+0xc8/0xf8)
[<c0182984>] (uart_handle_dcd_change) from [<c018625c>] (serial_pxa_irq+0x268/0x3b0)
[<c018625c>] (serial_pxa_irq) from [<c004d0d4>] (handle_irq_event_percpu+0x50/0x16c)
[<c004d0d4>] (handle_irq_event_percpu) from [<c004d22c>] (handle_irq_event+0x3c/0x5c)
[<c004d22c>] (handle_irq_event) from [<c004f7d0>] (handle_level_irq+0x94/0x118)
[<c004f7d0>] (handle_level_irq) from [<c004ca0c>] (generic_handle_irq+0x20/0x30)
[<c004ca0c>] (generic_handle_irq) from [<c004cbe0>] (__handle_domain_irq+0x38/0x70)
[<c004cbe0>] (__handle_domain_irq) from [<c00085c4>] (ichp_handle_irq+0x24/0x34)
[<c00085c4>] (ichp_handle_irq) from [<c000c7e4>] (__irq_svc+0x44/0x54)
Exception stack(0xc07c7f58 to 0xc07c7fa0)
7f40:                                                       00000001 00000001
7f60: 00000000 20000013 c07c6000 00000000 00000000 c07ce0a4 c07d7798 00000000
7f80: c07e8fb8 0000004c 00000000 c07c7fa0 c0044798 c0009f20 20000013 ffffffff
[<c000c7e4>] (__irq_svc) from [<c0009f20>] (arch_cpu_idle+0x28/0x38)
[<c0009f20>] (arch_cpu_idle) from [<c003c974>] (cpu_startup_entry+0x1b8/0x220)
[<c003c974>] (cpu_startup_entry) from [<c0338c54>] (start_kernel+0x39c/0x40c)
---[ end trace 4c1b7ae03f6d9d30 ]---
------------[ cut here ]------------
WARNING: CPU: 0 PID: 0 at drivers/tty/serial/serial_core.c:2791 uart_handle_cts_change+0xa0/0xdc()
Modules linked in:
CPU: 0 PID: 0 Comm: swapper Tainted: G        W      3.18.0-rc5+ #26
[<c000dff8>] (unwind_backtrace) from [<c000bc70>] (show_stack+0x10/0x14)
[<c000bc70>] (show_stack) from [<c00192ac>] (warn_slowpath_common+0x6c/0x8c)
[<c00192ac>] (warn_slowpath_common) from [<c00192e8>] (warn_slowpath_null+0x1c/0x24)
[<c00192e8>] (warn_slowpath_null) from [<c018528c>] (uart_handle_cts_change+0xa0/0xdc)
[<c018528c>] (uart_handle_cts_change) from [<c018624c>] (serial_pxa_irq+0x258/0x3b0)
[<c018624c>] (serial_pxa_irq) from [<c004d0d4>] (handle_irq_event_percpu+0x50/0x16c)
[<c004d0d4>] (handle_irq_event_percpu) from [<c004d22c>] (handle_irq_event+0x3c/0x5c)
[<c004d22c>] (handle_irq_event) from [<c004f7d0>] (handle_level_irq+0x94/0x118)
[<c004f7d0>] (handle_level_irq) from [<c004ca0c>] (generic_handle_irq+0x20/0x30)
[<c004ca0c>] (generic_handle_irq) from [<c004cbe0>] (__handle_domain_irq+0x38/0x70)
[<c004cbe0>] (__handle_domain_irq) from [<c00085c4>] (ichp_handle_irq+0x24/0x34)
[<c00085c4>] (ichp_handle_irq) from [<c000c7e4>] (__irq_svc+0x44/0x54)
Exception stack(0xc07c7f58 to 0xc07c7fa0)
7f40:                                                       00000001 00000001
7f60: 00000000 20000013 c07c6000 00000000 00000000 c07ce0a4 c07d7798 00000000
7f80: c07e8fb8 0000004c 00000000 c07c7fa0 c0044798 c0009f20 20000013 ffffffff
[<c000c7e4>] (__irq_svc) from [<c0009f20>] (arch_cpu_idle+0x28/0x38)
[<c0009f20>] (arch_cpu_idle) from [<c003c974>] (cpu_startup_entry+0x1b8/0x220)
[<c003c974>] (cpu_startup_entry) from [<c0338c54>] (start_kernel+0x39c/0x40c)
---[ end trace 4c1b7ae03f6d9d31 ]---

Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Acked-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-11-26 19:35:49 -08:00
Markus Elfring
48f5cde566 tty-hvsi_lib: Deletion of an unnecessary check before the function call "tty_kref_put"
The tty_kref_put() function tests whether its argument is NULL and then
returns immediately. Thus the test around the call is not needed.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-11-26 19:35:49 -08:00
Markus Elfring
a211b1af19 tty: Deletion of unnecessary checks before two function calls
The functions put_device() and tty_kref_put() test whether their argument
is NULL and then return immediately.
Thus the test around the call is not needed.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-11-26 19:35:49 -08:00
Christian Riesch
8bfbe2de76 n_tty: Fix read_buf race condition, increment read_head after pushing data
Commit 19e2ad6a09 ("n_tty: Remove overflow
tests from receive_buf() path") moved the increment of read_head into
the arguments list of read_buf_addr(). Function calls represent a
sequence point in C. Therefore read_head is incremented before the
character c is placed in the buffer. Since the circular read buffer is
a lock-less design since commit 6d76bd2618
("n_tty: Make N_TTY ldisc receive path lockless"), this creates a race
condition that leads to communication errors.

This patch modifies the code to increment read_head _after_ the data
is placed in the buffer and thus fixes the race for non-SMP machines.
To fix the problem for SMP machines, memory barriers must be added in
a separate patch.

Signed-off-by: Christian Riesch <christian.riesch@omicron.at>
Cc: <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-11-26 19:35:48 -08:00
Jiri Slaby
91905b6f4a parport: parport_pc, do not remove parent devices early
When the parport_pc module is removed from the system, all parport
devices are iterated in parport_pc_exit and removed by a call to
parport_pc_unregister_port. Note that some parport devices have its
'struct device' parent, known as port->dev.  And when port->dev is a
platform device, it is destroyed in parport_pc_exit too.

Now, when parport_pc_unregister_port is called for a going port,
drv->detach(port) is called for every parport driver in the system.
ppdev can be one of them. ppdev's detach() tears down its per-port
sysfs directory, which established port->dev as a parent earlier.

But since parport_pc_exit kills port->dev parents before unregisters
ports proper, ppdev's sysfs directory has no living parent anymore.
This results in the following warning:

WARNING: CPU: 1 PID: 785 at fs/sysfs/group.c:219 sysfs_remove_group+0x9b/0xa0
sysfs group ffffffff81c69e20 not found for kobject 'parport1'
Modules linked in: parport_pc(E-) ppdev(E) [last unloaded: ppdev]
CPU: 1 PID: 785 Comm: rmmod Tainted: G        W   E  3.18.0-rc5-next-20141120+ #824
...
Call Trace:
...
 [<ffffffff810aff76>] warn_slowpath_fmt+0x46/0x50
 [<ffffffff8123d81b>] sysfs_remove_group+0x9b/0xa0
 [<ffffffff814c27e7>] dpm_sysfs_remove+0x57/0x60
 [<ffffffff814b6ac9>] device_del+0x49/0x240
 [<ffffffff814b6ce2>] device_unregister+0x22/0x70
 [<ffffffff814b6dac>] device_destroy+0x3c/0x50
 [<ffffffffc012209a>] pp_detach+0x4a/0x60 [ppdev]
 [<ffffffff814b32dd>] parport_remove_port+0x11d/0x150
 [<ffffffffc0137328>] parport_pc_unregister_port+0x28/0xf0 [parport_pc]
 [<ffffffffc0138c0e>] parport_pc_exit+0x76/0x468 [parport_pc]
 [<ffffffff81128dbc>] SyS_delete_module+0x18c/0x230

It is also easily reproducible on qemu with two dummy ports '-parallel
/dev/null -parallel /dev/null'.

So switch the order of killing the two structures. But since port is
freed by parport_pc_unregister_port, we have to remember port->dev
in a local variable.

Perhaps nothing worse than the warning happens thanks to the device
refcounting. We *should* be on the safe side.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Reviewed-by: Takashi Iwai <tiwai@suse.de>
Tested-by: Martin Pluskal <mpluskal@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-11-26 19:33:57 -08:00
Stephen Boyd
5b48e0605a spmi: Remove shutdown/suspend/resume kernel-doc
These members of the driver structure are not present.
Remove them from the kernel-doc.

Cc: Josh Cartwright <joshc@codeaurora.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-11-26 19:33:57 -08:00
Hans Verkuil
2180a0d41a carma-fpga-program: drop videobuf dependency
This driver abuses videobuf helper functions. This is a bad idea
because:

1) this driver is completely unrelated to media drivers
2) the videobuf API is deprecated and will be removed eventually

This patch replaces the videobuf functions with the normal DMA kernel
API.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-11-26 19:30:05 -08:00
Hans Verkuil
27361ff56d carma-fpga: drop videobuf dependency
This driver abuses videobuf helper functions. This is a bad idea
because:

1) this driver is completely unrelated to media drivers
2) the videobuf API is deprecated and will be removed eventually

This patch replaces the videobuf functions with the normal DMA kernel
API.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-11-26 19:30:05 -08:00
Hans Verkuil
e976a725e0 carma-fpga-program.c: fix compile errors
drivers/misc/carma/carma-fpga-program.c: In function 'fpga_program_dma':
drivers/misc/carma/carma-fpga-program.c:529:2: error: expected ';' before 'if'
  if (ret) {
  ^
drivers/misc/carma/carma-fpga-program.c: In function 'fpga_read':
drivers/misc/carma/carma-fpga-program.c:752:45: error: 'ppos' undeclared (first use in this function)
  return simple_read_from_buffer(buf, count, ppos,
                                             ^
drivers/misc/carma/carma-fpga-program.c:752:45: note: each undeclared identifier is reported only once for each function it appears in
drivers/misc/carma/carma-fpga-program.c: In function 'fpga_llseek':
drivers/misc/carma/carma-fpga-program.c:765:27: error: 'file' undeclared (first use in this function)
  return fixed_size_llseek(file, offset, origin, priv->fw_size);
                           ^
drivers/misc/carma/carma-fpga-program.c:759:9: warning: unused variable 'newpos' [-Wunused-variable]
  loff_t newpos;
         ^
drivers/misc/carma/carma-fpga-program.c: In function 'fpga_read':
drivers/misc/carma/carma-fpga-program.c:754:1: warning: control reaches end of non-void function [-Wreturn-type]
 }
 ^
drivers/misc/carma/carma-fpga-program.c: In function 'fpga_llseek':
drivers/misc/carma/carma-fpga-program.c:766:1: warning: control reaches end of non-void function [-Wreturn-type]
 }
 ^
scripts/Makefile.build:263: recipe for target 'drivers/misc/carma/carma-fpga-program.o' failed

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-11-26 19:30:05 -08:00
Pali Rohár
723493ca59 i8k: Fix temperature bug handling in i8k_get_temp()
Static array prev[] was incorrectly initialized. It should be initialized to
some "invalid" temperature value (above I8K_MAX_TEMP).

Next, function should store "invalid" value to prev[] (above I8K_MAX_TEMP),
not valid (= I8K_MAX_TEMP) because whole temperature bug handling will not
work.

And last part, to not break existing detection of temperature sensors, register
them also if i8k report too high temperature (above I8K_MAX_TEMP). This is
needed because some sensors are sometimes turned off (e.g sensor on GPU which
can be turned off/on) and in this case SMM report too high value.

To prevent reporting "invalid" values to userspace, return -EINVAL. In this case
sensors which are currently turned off (e.g optimus/powerexpress/enduro gpu)
are reported as "N/A" by lm-sensors package.

Signed-off-by: Pali Rohár <pali.rohar@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-11-26 19:29:36 -08:00