Commit Graph

664322 Commits

Author SHA1 Message Date
Larry Finger 21a9509e2a staging: rtl8723bs: Fix possible usage of NULL pointer in core/rtw_debug.c
Smatch reports the following:

  CHECK   drivers/staging/rtl8723bs/core/rtw_debug.c
drivers/staging/rtl8723bs/core/rtw_debug.c:454 proc_get_survey_info() error: we previously assumed 'phead' could be null (see line 453)
drivers/staging/rtl8723bs/core/rtw_debug.c:455 proc_get_survey_info() warn: variable dereferenced before check 'phead' (see line 454)

In the code, there are two successive calls to get_head(). The second
is removed.

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-09 09:26:28 +02:00
Larry Finger f195f7d5fd staging: rtl8723bs: Fix indenting problems in core/rtw_xmit.c
Smatch logs the following:

  CHECK   drivers/staging/rtl8723bs/core/rtw_xmit.c
drivers/staging/rtl8723bs/core/rtw_xmit.c:277 _rtw_init_xmit_priv() warn: inconsistent indenting
drivers/staging/rtl8723bs/core/rtw_xmit.c:294 _rtw_free_xmit_priv() warn: inconsistent indenting
drivers/staging/rtl8723bs/core/rtw_xmit.c:295 _rtw_free_xmit_priv() warn: inconsistent indenting
drivers/staging/rtl8723bs/core/rtw_xmit.c:946 xmitframe_addmic() warn: inconsistent indenting

These are fixed with white-space changes.

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-09 09:26:28 +02:00
Larry Finger 1793db1d1c staging: rtl8723bs: Fix indenting problem for hal/hal_com.c
Smatch lists the following:

  CHECK   drivers/staging/rtl8723bs/hal/hal_com_phycfg.c
drivers/staging/rtl8723bs/hal/hal_com_phycfg.c:2090 Hal_ChannelPlanToRegulation() warn: inconsistent indenting

Fixed by changing the white space.

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-09 09:26:28 +02:00
Larry Finger 0952abb043 staging: rtl8723bs: Fix indening problem in hal/hal_com_phycfg.c
Smatch reports the following:

  CHECK   drivers/staging/rtl8723bs/hal/hal_com_phycfg.c
drivers/staging/rtl8723bs/hal/hal_com_phycfg.c:2090 Hal_ChannelPlanToRegulation() warn: inconsistent indenting

This warning is fixed with a white-space change.

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-09 09:26:28 +02:00
Larry Finger d9be20120a staging: rtl8723bs: Fix indenting problems in hal/HalHWImg8723B_BB.c
Smatch lists the following:

  CHECK   drivers/staging/rtl8723bs/hal/HalHWImg8723B_BB.c
drivers/staging/rtl8723bs/hal/HalHWImg8723B_BB.c:314 ODM_ReadAndConfig_MP_8723B_AGC_TAB() warn: for statement not indented
drivers/staging/rtl8723bs/hal/HalHWImg8723B_BB.c:583 ODM_ReadAndConfig_MP_8723B_PHY_REG() warn: for statement not indented
drivers/staging/rtl8723bs/hal/HalHWImg8723B_BB.c:586 ODM_ReadAndConfig_MP_8723B_PHY_REG() warn: inconsistent indenting

These were all fixed with white-space changes.

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-09 09:26:28 +02:00
Larry Finger 7e2b0aaec6 staging: rtl8723bs: Fix potential usage while NULL error in hal/rtl8723b_hal_init.c
Smatch logs the following:

  CHECK   drivers/staging/rtl8723bs/hal/rtl8723b_hal_init.c
drivers/staging/rtl8723bs/hal/rtl8723b_hal_init.c:518 rtl8723b_FirmwareDownload() error: we previously assumed 'pFirmware' could be null (see line 382)

Fixing this error required a rewrite of the error exits from this routine.

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-09 09:26:28 +02:00
Larry Finger 6557ddfec3 staging: rtl8723bs: Fix various errors in os_dep/ioctl_cfg80211.c
Smatch lists the following:

  CHECK   drivers/staging/rtl8723bs/os_dep/ioctl_cfg80211.c
drivers/staging/rtl8723bs/os_dep/ioctl_cfg80211.c:470 rtw_cfg80211_ibss_indicate_connect() error: we previously assumed 'scanned' could be null (see line 466)
drivers/staging/rtl8723bs/os_dep/ioctl_cfg80211.c:942 rtw_cfg80211_set_encryption() warn: inconsistent indenting
drivers/staging/rtl8723bs/os_dep/ioctl_cfg80211.c:955 rtw_cfg80211_set_encryption() error: buffer overflow 'psecuritypriv->dot11DefKey' 4 <= 4
drivers/staging/rtl8723bs/os_dep/ioctl_cfg80211.c:1017 rtw_cfg80211_set_encryption() error: buffer overflow 'padapter->securitypriv.dot118021XGrpKey' 5 <= 5
drivers/staging/rtl8723bs/os_dep/ioctl_cfg80211.c:1216 cfg80211_rtw_set_default_key() warn: inconsistent indenting
drivers/staging/rtl8723bs/os_dep/ioctl_cfg80211.c:2498 rtw_cfg80211_monitor_if_xmit_entry() error: we previously assumed 'skb' could be null (see line 2495)
drivers/staging/rtl8723bs/os_dep/ioctl_cfg80211.c:2850 cfg80211_rtw_start_ap() warn: if statement not indented
drivers/staging/rtl8723bs/os_dep/ioctl_cfg80211.c:2860 cfg80211_rtw_start_ap() warn: if statement not indented
drivers/staging/rtl8723bs/os_dep/ioctl_cfg80211.c:3417 rtw_cfg80211_preinit_wiphy() warn: inconsistent indenting
drivers/staging/rtl8723bs/os_dep/ioctl_cfg80211.c:3547 rtw_wdev_alloc() info: ignoring unreachable code.

The indenting warnings were fixed by simple white space changes.

The section where 'scanned' could be null required an immediate exit from
the routine at that point. A similar fix was required where 'skb' could be null.

The two buffer overflow errors were caused by off-by-one errors. While
locating these problems, another one was found in os_dep/ioctl_linux.c.

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-09 09:26:28 +02:00
Larry Finger e62bb9252c staging: rtl8723bs: Fix indenting mistake in os_dep/mlme_linux.c
Smatch reports the following warning:

  CHECK   drivers/staging/rtl8723bs/os_dep/mlme_linux.c
drivers/staging/rtl8723bs/os_dep/mlme_linux.c:149 rtw_os_indicate_disconnect() warn: inconsistent indenting

Again, a simple change in the white space fixes this problem.

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-09 09:26:28 +02:00
Larry Finger 72544c5f9d staging: rtl8723bs: Fix indenting warning in os_dep/os_intfs.c
Smatch logs the following warning:

  CHECK   drivers/staging/rtl8723bs/os_dep/os_intfs.c
drivers/staging/rtl8723bs/os_dep/os_intfs.c:1082 ips_netdrv_open() warn: inconsistent indenting

A simple change in the white space handles this warning.

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-09 09:26:27 +02:00
Larry Finger 2679a3fbef staging: rtl8723bs: Fix dereference before check warning in os_dep/recv_linux.c
Smatch lists the following warning:

  CHECK   drivers/staging/rtl8723bs/os_dep/recv_linux.c
drivers/staging/rtl8723bs/os_dep/recv_linux.c:353 rtw_recv_indicatepkt() warn: variable dereferenced before check 'precv_frame' (see line 312)

This warning is fixed by removing the test at line 353.

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-09 09:26:27 +02:00
Larry Finger c49c1f2bde staging: rtl8723bs: Fix indenting warning in os_dep/rtw_proc.c
Smatch lists the following warning:

  CHECK   drivers/staging/rtl8723bs/os_dep/rtw_proc.c
drivers/staging/rtl8723bs/os_dep/rtw_proc.c:102 rtw_drv_proc_open() warn: inconsistent indenting

This warning is fixed with a simple change in the white space.

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-09 09:26:27 +02:00
Larry Finger 9ad88c71d3 staging: rtl8723bs: Fix indenting warning in os_dep/xmit_linux.c
Smatch issues the warning

  CHECK   drivers/staging/rtl8723bs/os_dep/xmit_linux.c
drivers/staging/rtl8723bs/os_dep/xmit_linux.c:42 _rtw_pktfile_read() warn: inconsistent indenting

A simple indent changes fixes this.

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-09 09:26:27 +02:00
Linus Torvalds 78d91a75b4 Merge branch 'for-linus' of git://git.kernel.dk/linux-block
Pull block fixes from Jens Axboe:
 "Here's a pull request for 4.11-rc, fixing a set of issues mostly
  centered around the new scheduling framework. These have been brewing
  for a while, but split up into what we absolutely need in 4.11, and
  what we can defer until 4.12. These are well tested, on both single
  queue and multiqueue setups, and with and without shared tags. They
  fix several hangs that have happened in testing.

  This is obviously larger than I would have preferred at this point in
  time, but I don't think we can shave much off this and still get the
  desired results.

  In detail, this pull request contains:

   - a set of five fixes for NVMe, mostly from Christoph and one from
     Roland.

   - a series from Bart, fixing issues with dm-mq and SCSI shared tags
     and scheduling. Note that one of those patches commit messages may
     read like an optimization, but it is in fact an important fix for
     queue restarts in particular.

   - a series from Omar, most importantly fixing a hang with multiple
     hardware queues when we fail to get a driver tag. Another important
     fix in there is for resizing hardware queues, which nbd does when
     handling multiple sockets for one connection.

   - fixing an imbalance in putting the ctx for hctx request allocations
     from Minchan"

* 'for-linus' of git://git.kernel.dk/linux-block:
  blk-mq: Restart a single queue if tag sets are shared
  dm rq: Avoid that request processing stalls sporadically
  scsi: Avoid that SCSI queues get stuck
  blk-mq: Introduce blk_mq_delay_run_hw_queue()
  blk-mq: remap queues when adding/removing hardware queues
  blk-mq-sched: fix crash in switch error path
  blk-mq-sched: set up scheduler tags when bringing up new queues
  blk-mq-sched: refactor scheduler initialization
  blk-mq: use the right hctx when getting a driver tag fails
  nvmet: fix byte swap in nvmet_parse_io_cmd
  nvmet: fix byte swap in nvmet_execute_write_zeroes
  nvmet: add missing byte swap in nvmet_get_smart_log
  nvme: add missing byte swap in nvme_setup_discard
  nvme: Correct NVMF enum values to match NVMe-oF rev 1.0
  block: do not put mq context in blk_mq_alloc_request_hctx
2017-04-08 11:56:58 -07:00
Linus Torvalds c3df1c7c36 Late pin control fix for v4.11:
An issue was detected with pin control hos on the Freescale i.MX after
 the refactorings for more general group and function handling. We now
 have the proper fix for this.
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Merge tag 'pinctrl-v4.11-4' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl

Pull pin control fix from Linus Walleij:
 "This late fix for pin control is hopefully the last I send this cycle.

  The problem was detected early in the v4.11 release cycle and there
  has been some back and forth on how to solve it. Sadly the proper fix
  arrives late, but at least not too late.

  An issue was detected with pin control on the Freescale i.MX after the
  refactorings for more general group and function handling.

  We now have the proper fix for this"

* tag 'pinctrl-v4.11-4' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl:
  pinctrl: core: Fix pinctrl_register_and_init() with pinctrl_enable()
2017-04-08 11:43:38 -07:00
Linus Torvalds 894ca30cf6 powerpc fixes for 4.11 #7
Headed to stable:
  - disable HFSCR[TM] if TM is not supported, fixes a potential host kernel crash
    triggered by a hostile guest, but only in configurations that no one uses
  - don't try to fix up misaligned load-with-reservation instructions
  - fix flush_(d|i)cache_range() called from modules on little endian kernels
  - add missing global TLB invalidate if cxl is active
  - fix missing preempt_disable() in crc32c-vpmsum
 
 And a fix for selftests build changes that went in this release:
  - selftests/powerpc: Fix standalone powerpc build
 
 Thanks to:
   Benjamin Herrenschmidt, Frederic Barrat, Oliver O'Halloran, Paul Mackerras.
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Merge tag 'powerpc-4.11-7' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux

Pull powerpc fixes from Michael Ellerman:
 "Some more powerpc fixes for 4.11:

  Headed to stable:

   - disable HFSCR[TM] if TM is not supported, fixes a potential host
     kernel crash triggered by a hostile guest, but only in
     configurations that no one uses

   - don't try to fix up misaligned load-with-reservation instructions

   - fix flush_(d|i)cache_range() called from modules on little endian
     kernels

   - add missing global TLB invalidate if cxl is active

   - fix missing preempt_disable() in crc32c-vpmsum

  And a fix for selftests build changes that went in this release:

   - selftests/powerpc: Fix standalone powerpc build

  Thanks to: Benjamin Herrenschmidt, Frederic Barrat, Oliver O'Halloran,
  Paul Mackerras"

* tag 'powerpc-4.11-7' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
  powerpc/crypto/crc32c-vpmsum: Fix missing preempt_disable()
  powerpc/mm: Add missing global TLB invalidate if cxl is active
  powerpc/64: Fix flush_(d|i)cache_range() called from modules
  powerpc: Don't try to fix up misaligned load-with-reservation instructions
  powerpc: Disable HFSCR[TM] if TM is not supported
  selftests/powerpc: Fix standalone powerpc build
2017-04-08 11:06:12 -07:00
Chris Salls cf01fb9985 mm/mempolicy.c: fix error handling in set_mempolicy and mbind.
In the case that compat_get_bitmap fails we do not want to copy the
bitmap to the user as it will contain uninitialized stack data and leak
sensitive data.

Signed-off-by: Chris Salls <salls@cs.ucsb.edu>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-04-08 10:57:55 -07:00
Liping Zhang 425fffd886 sysctl: report EINVAL if value is larger than UINT_MAX for proc_douintvec
Currently, inputting the following command will succeed but actually the
value will be truncated:

  # echo 0x12ffffffff > /proc/sys/net/ipv4/tcp_notsent_lowat

This is not friendly to the user, so instead, we should report error
when the value is larger than UINT_MAX.

Fixes: e7d316a02f ("sysctl: handle error writing UINT_MAX to u32 fields")
Signed-off-by: Liping Zhang <zlpnobody@gmail.com>
Cc: Subash Abhinov Kasiviswanathan <subashab@codeaurora.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-04-08 10:27:40 -07:00
Lorenzo Bianconi 510c010630 iio: imu: st_lsm6dsx: use i2c/spi device name for iio_dev name
Use the correct chip name (e.g. lsm6dsm) as suffix for iio_dev name
instead of a generic one (lsm6dsx)

Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@st.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2017-04-08 18:09:40 +01:00
Linus Walleij 63c3ecd946 iio: adc: add a driver for Qualcomm PM8xxx HK/XOADC
The Qualcomm PM8xxx PMICs contain a simpler ADC than its
successors (already in the kernel as qcom-spmi-vadc.c):
the HK/XO ADC (Housekeeping/Chrystal oscillator ADC).

As far as I can understand this is equal to the PMICs
using SSBI transport and encompass PM8018, PM8038,
PM8058, and PM8921, so this is shortly named PM8xxx.

This ADC monitors a bunch of on-board voltages and the die
temperature of the PMIC itself, but it can also be routed
to convert a few external MPPs (multi-purpose pins). On
the APQ8060 DragonBoard this feature is used to let this
ADC convert an analog ALS (Ambient Light Sensor) voltage
signal from a Capella CM3605 ALS into a LUX value.

Developed and tested with APQ8060 DragonBoard based on
Ivan's driver and Rama Krishna's patches. The SPMI VADC
driver is quite different, but share enough minor
functionality that I have split out to the common file
in a previous patch.

Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-arm-msm@vger.kernel.org
Cc: Ivan T. Ivanov <iivanov.xz@gmail.com>
Cc: Andy Gross <andy.gross@linaro.org>
Cc: Bjorn Andersson <bjorn.andersson@linaro.org>
Cc: Stephen Boyd <sboyd@codeaurora.org>
Cc: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Cc: Rama Krishna Phani A <rphani@codeaurora.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2017-04-08 17:42:26 +01:00
Linus Walleij e932d4f041 iio: adc: break out common code from SPMI VADC
The SPMI VADC and the earlier XOADC share a subset of
common code, so to be able to use the same code in both
drivers, we break out a separate file with the common code,
prefix exported functions that are no longer static with
qcom_* and bake an object qcom-spmi-vadc.o that contains both
files: qcom-vadc-common.o and qcom-spmi-vadc-core.o.

As we need to follow the procedure for making a kernel module
or compiled in object from several files, but still want to
produce the same module name, rename the qcom-spmi-vadc.c
file to qcom-spmi-vadc-core.c so we can bake the two objects
into qcom-spmi-vadc.o

Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-arm-msm@vger.kernel.org
Cc: Ivan T. Ivanov <iivanov.xz@gmail.com>
Cc: Andy Gross <andy.gross@linaro.org>
Cc: Bjorn Andersson <bjorn.andersson@linaro.org>
Cc: Stephen Boyd <sboyd@codeaurora.org>
Cc: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Cc: Rama Krishna Phani A <rphani@codeaurora.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2017-04-08 17:40:49 +01:00
Linus Walleij 96b3c83303 iio: xoadc: augment DT bindings a bit
In order to accommodate in a logical manner for the premuxed channels
in PM8921 and the similarly addressed channels in later PMICs, we
need a twocell arrangement with premux and analog mux setting as
a tuple to uniquely identify a hardware channel.

These bindings are not yet in use, so it should be fine to augment
them before we actually start using it in drivers and device trees.

This scheme came out of lengthy discussions and reverse-engineering
and reading of the few information sources we have.

Cc: devicetree@vger.kernel.org
Acked-by: Rob Herring <robh+dt@kernel.org>
Suggested-by: Björn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2017-04-08 17:40:07 +01:00
Quentin Schulz 808a8b7377 iio: adc: sun4i-gpadc-iio: add support for A33 thermal sensor
This adds support for the Allwinner A33 thermal sensor.

Unlike the A10, A13 and A31, the Allwinner A33 only has one channel
which is dedicated to the thermal sensor. Moreover, its thermal sensor
does not generate interruptions, thus we only need to directly read the
register storing the temperature value.

The MFD used by the A10, A13 and A31, was created to avoid breaking the
DT binding, but since the nodes for the ADC weren't there for the A33,
it is not needed.

Though the A33 does not have an internal ADC, it has a thermal sensor
which shares the same registers with GPADC of the already supported SoCs
and almost the same bits, for the same purpose (thermal sensor).

The thermal sensor behaves exactly the same (except the presence of
interrupts or not) on the different SoCs.

Signed-off-by: Quentin Schulz <quentin.schulz@free-electrons.com>
Acked-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2017-04-08 17:35:47 +01:00
Quentin Schulz e3f6e7263b iio: adc: sun4i-gpadc-iio: move code used in MFD probing to new function
This moves code used in MFD probing to a new sun4i_gpadc_probe_mfd
function.

This driver was initially written for A10, A13 and A31 SoCs which
already had a DT binding for this IP, thus we needed to use an MFD to
probe the different drivers without changing the DT binding of these
SoCs.

For SoCs that will require to create a DT binding for this IP, we can
avoid using an MFD, thus we need two separate functions: one for probing
via MFD and one for probing without MFD.

This split the code specific to MFD probing in a function separated from
the driver probe function.

Signed-off-by: Quentin Schulz <quentin.schulz@free-electrons.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2017-04-08 17:34:03 +01:00
Jacopo Mondi 69780a3bbc iio: adc: Add Maxim max9611 ADC driver
Add iio driver for Maxim max9611 and max9612 current-sense amplifiers
with 12-bits ADC interface.

Datasheet publicly available at:
https://datasheets.maximintegrated.com/en/ds/MAX9611-MAX9612.pdf

Signed-off-by: Jacopo Mondi <jacopo+renesas@jmondi.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2017-04-08 17:26:06 +01:00
Jacopo Mondi 3fed601c1c iio: Documentation: Add max9611 sysfs documentation
Add documentation for max9611 driver.
Document attributes describing value of shunt resistor installed between
RS+ and RS- voltage sense inputs.

Signed-off-by: Jacopo Mondi <jacopo+renesas@jmondi.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2017-04-08 17:26:03 +01:00
Jacopo Mondi 2a70d55029 dt-bindings: iio: adc: Add max9611 ADC
Add device tree bindings documentation for Maxim max9611/max9612 current
sense amplifier.

Signed-off-by: Jacopo Mondi <jacopo+renesas@jmondi.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2017-04-08 17:25:59 +01:00
Tejun Heo 27f395b857 MAINTAINERS: separate out kernfs maintainership
Separate out kernfs from driver core and add myself as a
co-maintainer.

Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-08 18:15:32 +02:00
Fabrice Gasnier 77a9febfd8 iio: stm32 trigger: fix sampling_frequency read
When prescaler (PSC) is 0, it means div factor is 1: counter clock
frequency is equal to input clk / (PSC + 1).
When reload value is 8 for example, counter counts 9 cycles, from 0 to 8.
This is handled in frequency write routine, by writing respectively:
- prescaler - 1 to PSC
- reload value - 1 to ARR
This fix does the opposite when reading the frequency from PSC and ARR:
- prescaler is PSC + 1
- reload value is ARR + 1

Thus, PSC may be 0, depending on requested sampling frequency (div 1).
In this case, reading freq wrongly reports 0, instead of computing and
reporting correct value.
Remove test on !psc and !arr.

Small test on stm32f4 (example on tim1_trgo), before this fix:
$ cd /sys/bus/iio/devices/triggerX
$ echo 10000 > sampling_frequency
$ cat sampling_frequency
0

After this fix:
$ echo 10000 > sampling_frequency
$ cat sampling_frequency
10000

Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2017-04-08 16:35:08 +01:00
NeilBrown c8a139d001 sysfs: be careful of error returns from ops->show()
ops->show() can return a negative error code.
Commit 65da3484d9 ("sysfs: correctly handle short reads on PREALLOC attrs.")
(in v4.4) caused this to be stored in an unsigned 'size_t' variable, so errors
would look like large numbers.
As a result, if an error is returned, sysfs_kf_read() will return the
value of 'count', typically 4096.

Commit 17d0774f80 ("sysfs: correctly handle read offset on PREALLOC attrs")
(in v4.8) extended this error to use the unsigned large 'len' as a size for
memmove().
Consequently, if ->show returns an error, then the first read() on the
sysfs file will return 4096 and could return uninitialized memory to
user-space.
If the application performs a subsequent read, this will trigger a memmove()
with extremely large count, and is likely to crash the machine is bizarre ways.

This bug can currently only be triggered by reading from an md
sysfs attribute declared with __ATTR_PREALLOC() during the
brief period between when mddev_put() deletes an mddev from
the ->all_mddevs list, and when mddev_delayed_delete() - which is
scheduled on a workqueue - completes.
Before this, an error won't be returned by the ->show()
After this, the ->show() won't be called.

I can reproduce it reliably only by putting delay like
	usleep_range(500000,700000);
early in mddev_delayed_delete(). Then after creating an
md device md0 run
  echo clear > /sys/block/md0/md/array_state; cat /sys/block/md0/md/array_state

The bug can be triggered without the usleep.

Fixes: 65da3484d9 ("sysfs: correctly handle short reads on PREALLOC attrs.")
Fixes: 17d0774f80 ("sysfs: correctly handle read offset on PREALLOC attrs")
Cc: stable@vger.kernel.org
Signed-off-by: NeilBrown <neilb@suse.com>
Acked-by: Tejun Heo <tj@kernel.org>
Reported-and-tested-by: Miroslav Benes <mbenes@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-08 17:33:32 +02:00
Johan Hovold cf903e9d3a Documentation: stable-kernel-rules: fix stable-tag format
A patch documenting how to specify which kernels a particular fix should
be backported to (seemingly) inadvertently added a minus sign after the
kernel version. This particular stable-tag format had never been used
prior to this patch, and was neither present when the patch in question
was first submitted (it was added in v2 without any comment).

Drop the minus sign to avoid any confusion.

Fixes: fdc81b7910 ("stable_kernel_rules: Add clause about specification of kernel versions to patch.")
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-08 17:33:31 +02:00
Ivan Safonov 1375baa965 staging:r8188eu: remove sw_encrypt member of security_priv struct
sw_encrypt always is 0. Replace sw_encrypt with 0.

Signed-off-by: Ivan Safonov <insafonov@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-08 17:11:54 +02:00
Ivan Safonov 82407f388e staging:r8188eu: remove software_encrypt member of registry_priv struct
Value of this variable does not changed after initialization.
Replace software_encrypt with its default value.

Signed-off-by: Ivan Safonov <insafonov@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-08 17:11:54 +02:00
Ivan Safonov d79640dac7 staging:r8188eu: replace rtw_software_encrypt with its default value
rtw_software_encrypt used only once and does not changed.
Replace it with 0.

Signed-off-by: Ivan Safonov <insafonov@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-08 17:11:54 +02:00
Ivan Safonov 2288387936 staging:r8188eu: remove sw_decrypt member of security_priv struct
sw_decrypt always is 0, so replace it with 0.

Signed-off-by: Ivan Safonov <insafonov@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-08 17:11:54 +02:00
Ivan Safonov 8c986111a6 staging:r8188eu: remove software_decrypt member of registry_priv struct
Value of this variable has no changes, and used once.
Replace software_decrypt with its value.

Signed-off-by: Ivan Safonov <insafonov@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-08 17:11:53 +02:00
Ivan Safonov 0e7018b4b0 staging:r8188eu: replace rtw_software_decrypt with its value
rtw_software_decrypt used only once and does not changed.
Replace it with 0.

Signed-off-by: Ivan Safonov <insafonov@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-08 17:11:53 +02:00
Haim Daniel 361b3f54ba staging: vc04_services: add parenthesis to macros
vchi_cfg.h: fix checkpatch ERROR: Macros with complex values should be enclosed in parenthesis

Signed-off-by: Haim Daniel <haimdaniel@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-08 17:05:59 +02:00
Andrea della Porta e45c237912 staging: comedi: drivers: s626.c - fixed checkpatch issue about data type
staging: comedi: drivers: s626.c - fixed the following checkpatch issue:
CHECK: Prefer kernel type 's16' over 'int16_t'
#1939: FILE: drivers/staging/comedi/drivers/s626.c:1939:
+               int16_t dacdata = (int16_t)data[i];

Signed-off-by: Andrea della Porta <sfaragnaus@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-08 17:05:59 +02:00
Andrea della Porta 1bb90b68ab staging: rts5208: ms.c fixed checkpatch warning - using __func__ instead of hardcoded name
staging: rts5208: ms.c Fixed checkpatch warning:
WARNING: Prefer using "%s", __func__ to embedded function names
#2597: FILE: rts5208/ms.c:2597:
+       dev_dbg(rtsx_dev(chip), "ms_build_l2p_tbl: %d\n", seg_no);

Signed-off-by: Andrea della Porta <sfaragnaus@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-08 17:05:59 +02:00
Ioana Radulescu 141a10aead staging: fsl-mc/dpio: Fix early writing of valid bit
Commands written to the QMan software portals have a valid
bit in the "verb" field of the command that, when set with
the right value, notifies the hardware that the command is
fully written and ready to be processed.

The "verb" field should be the last one to be written in the
swp command registers, after all other fields are filled in.
The current implementation doesn't follow this rule for all
commands, which may result in an incompletely configured
command being processed by the hardware. Enforce the correct
order of writes to avoid this situation.

Signed-off-by: Ioana Radulescu <ruxandra.radulescu@nxp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-08 17:05:59 +02:00
Prasant Jalan ad3dbb9a10 staging: rtl8712: fixed multiple line derefence issue
Checkpatch emits WARNING: Avoid multiple line dereference.

Checkpatch warning is fixed by:
* Trivial indentation improvement and
* Using += instead of + helps shortening the statement.

Signed-off-by: Prasant Jalan <prasant.jalan@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-08 17:05:59 +02:00
Tejaswini Poluri b76cc94a10 staging: rtl8712: code style fix
Fixed the warnings from checkpatch.pl on file rtl8712/mlme_linux.c
Avoided multiple line dereferences in the code

Signed-off-by: Tejaswini Poluri <tejaswinipoluri3@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-08 17:05:59 +02:00
Alex Wilson 919a9bb607 staging: fbtft: fix type assignment warning
Sparse spits out a warning that a __be16 was being assigned to a u16.
Change the type of txbuf16 to __be16 b/c it's a restricted type and
prevents mixing endianness.

Signed-off-by: Alex Wilson <alex.david.wilson@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-08 17:05:59 +02:00
Andrea della Porta ca86987cd4 staging: xgifb: added blankline after decl.
Fixed checkpatch warning:
WARNING: Missing a blank line after declarations
#882: FILE: drivers/staging/xgifb/XGI_main_26.c:882:
+                               const u8 *f =
XGI_TV_filter[filter_tb].filter[filter];
+                               pr_debug("FilterTable[%d]-%d: %*ph\n",

Signed-off-by: Andrea della Porta <sfaragnaus@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-08 17:05:59 +02:00
Prasant Jalan 271dbae3c6 staging: sm750fb: removed line continuations in quoted strings
checkpatch gives WARNING: Avoid line continuations in quoted strings.

Trivial fix by removing line continuations and adding another quote at
the start of next line.

Signed-off-by: Prasant Jalan <prasant.jalan@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-08 17:00:52 +02:00
Prasant Jalan 4895398d03 staging: sm750fb: fixing function return with lock held
lynxfb_suspend() & lynxfb_resume() return on errors while holding
console_lock.

Adding 'goto' such that proper cleanups can be done before returning
from function and therefore console_lock can be released before
returning.

Signed-off-by: Prasant Jalan <prasant.jalan@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-08 17:00:51 +02:00
Andrea della Porta d6171ba858 staging: sm750fb: ddk750_display.c - fixed checkpatch warning: line over 80 chars
staging: sm750fb: ddk750_display.c - fixed the following checkpatch warning:
WARNING: line over 80 characters
#149: FILE: drivers/staging/sm750fb/ddk750_display.c:149:
+               swPanelPowerSequence((output & PNL_SEQ_MASK) >> PNL_SEQ_OFFSET, 4);

Signed-off-by: Andrea della Porta <sfaragnaus@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-08 17:00:51 +02:00
Aishwarya Pant 951142c293 staging: bcm2835-audio: remove unnecessary log messages
Remove unnecessary log messages in the driver which are just tracking
function entry and exits.

Signed-off-by: Aishwarya Pant <aishpant@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-08 16:58:42 +02:00
Colin Ian King 34bc8f9392 staging: bcm2835-camera: fix spelling mistake: "elementry" -> "elementary"
trivial fix to spelling mistake in various comments and pr_debug messages

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-08 16:58:18 +02:00
Maciek Borzecki 76b4580bf4 staging wlan-ng: fix type mismatch warnings in mkpdrlist()
struct  hfa384x_pdrec len and code fields as clearly little endian,
mark both fields as such. pda->buf is also clearly little endian.

Fixes sparse warnings:

  drivers/staging/wlan-ng/prism2fw.c:613:16: warning: cast to restricted __le16
  drivers/staging/wlan-ng/prism2fw.c:616:21: warning: cast to restricted __le16
  drivers/staging/wlan-ng/prism2fw.c:625:21: warning: cast to restricted __le16

Signed-off-by: Maciek Borzecki <maciek.borzecki@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-08 16:54:17 +02:00