Commit Graph

664309 Commits

Author SHA1 Message Date
Marcin Niestroj
4eecbe8188 iio: trigger: fix NULL pointer dereference in iio_trigger_write_current()
In case oldtrig == trig == NULL (which happens when we set none
trigger, when there is already none set) there is a NULL pointer
dereference during iio_trigger_put(trig). Below is kernel output when
this occurs:

[   26.741790] Unable to handle kernel NULL pointer dereference at virtual address 00000000
[   26.750179] pgd = cacc0000
[   26.752936] [00000000] *pgd=8adc6835, *pte=00000000, *ppte=00000000
[   26.759531] Internal error: Oops: 17 [#1] SMP ARM
[   26.764261] Modules linked in: usb_f_ncm u_ether usb_f_acm u_serial usb_f_fs libcomposite configfs evbug
[   26.773844] CPU: 0 PID: 152 Comm: synchro Not tainted 4.12.0-rc1 #2
[   26.780128] Hardware name: Freescale i.MX6 Ultralite (Device Tree)
[   26.786329] task: cb1de200 task.stack: cac92000
[   26.790892] PC is at iio_trigger_write_current+0x188/0x1f4
[   26.796403] LR is at lock_release+0xf8/0x20c
[   26.800696] pc : [<c0736f34>]    lr : [<c016efb0>]    psr: 600d0013
[   26.800696] sp : cac93e30  ip : cac93db0  fp : cac93e5c
[   26.812193] r10: c0e64fe8  r9 : 00000000  r8 : 00000001
[   26.817436] r7 : cb190810  r6 : 00000010  r5 : 00000001  r4 : 00000000
[   26.823982] r3 : 00000000  r2 : 00000000  r1 : cb1de200  r0 : 00000000
[   26.830528] Flags: nZCv  IRQs on  FIQs on  Mode SVC_32  ISA ARM  Segment none
[   26.837683] Control: 10c5387d  Table: 8acc006a  DAC: 00000051
[   26.843448] Process synchro (pid: 152, stack limit = 0xcac92210)
[   26.849475] Stack: (0xcac93e30 to 0xcac94000)
[   26.853857] 3e20:                                     00000001 c0736dac c054033c cae6b680
[   26.862060] 3e40: cae6b680 00000000 00000001 cb3f8610 cac93e74 cac93e60 c054035c c0736db8
[   26.870264] 3e60: 00000001 c054033c cac93e94 cac93e78 c029bf34 c0540348 00000000 00000000
[   26.878469] 3e80: cb3f8600 cae6b680 cac93ed4 cac93e98 c029b320 c029bef0 00000000 00000000
[   26.886672] 3ea0: 00000000 cac93f78 cb2d41fc caed3280 c029b214 cac93f78 00000001 000e20f8
[   26.894874] 3ec0: 00000001 00000000 cac93f44 cac93ed8 c0221dcc c029b220 c0e1ca39 cb2d41fc
[   26.903079] 3ee0: cac93f04 cac93ef0 c0183ef0 c0183ab0 cb2d41fc 00000000 cac93f44 cac93f08
[   26.911282] 3f00: c0225eec c0183ebc 00000001 00000000 c0223728 00000000 c0245454 00000001
[   26.919485] 3f20: 00000001 caed3280 000e20f8 cac93f78 000e20f8 00000001 cac93f74 cac93f48
[   26.927690] 3f40: c0223680 c0221da4 c0246520 c0245460 caed3283 caed3280 00000000 00000000
[   26.935893] 3f60: 000e20f8 00000001 cac93fa4 cac93f78 c0224520 c02235e4 00000000 00000000
[   26.944096] 3f80: 00000001 000e20f8 00000001 00000004 c0107f84 cac92000 00000000 cac93fa8
[   26.952299] 3fa0: c0107de0 c02244e8 00000001 000e20f8 0000000e 000e20f8 00000001 fbad2484
[   26.960502] 3fc0: 00000001 000e20f8 00000001 00000004 beb6b698 00064260 0006421c beb6b4b4
[   26.968705] 3fe0: 00000000 beb6b450 b6f219a0 b6e2f268 800d0010 0000000e cac93ff4 cac93ffc
[   26.976896] Backtrace:
[   26.979388] [<c0736dac>] (iio_trigger_write_current) from [<c054035c>] (dev_attr_store+0x20/0x2c)
[   26.988289]  r10:cb3f8610 r9:00000001 r8:00000000 r7:cae6b680 r6:cae6b680 r5:c054033c
[   26.996138]  r4:c0736dac r3:00000001
[   26.999747] [<c054033c>] (dev_attr_store) from [<c029bf34>] (sysfs_kf_write+0x50/0x54)
[   27.007686]  r5:c054033c r4:00000001
[   27.011290] [<c029bee4>] (sysfs_kf_write) from [<c029b320>] (kernfs_fop_write+0x10c/0x224)
[   27.019579]  r7:cae6b680 r6:cb3f8600 r5:00000000 r4:00000000
[   27.025271] [<c029b214>] (kernfs_fop_write) from [<c0221dcc>] (__vfs_write+0x34/0x120)
[   27.033214]  r10:00000000 r9:00000001 r8:000e20f8 r7:00000001 r6:cac93f78 r5:c029b214
[   27.041059]  r4:caed3280
[   27.043622] [<c0221d98>] (__vfs_write) from [<c0223680>] (vfs_write+0xa8/0x170)
[   27.050959]  r9:00000001 r8:000e20f8 r7:cac93f78 r6:000e20f8 r5:caed3280 r4:00000001
[   27.058731] [<c02235d8>] (vfs_write) from [<c0224520>] (SyS_write+0x44/0x98)
[   27.065806]  r9:00000001 r8:000e20f8 r7:00000000 r6:00000000 r5:caed3280 r4:caed3283
[   27.073582] [<c02244dc>] (SyS_write) from [<c0107de0>] (ret_fast_syscall+0x0/0x1c)
[   27.081179]  r9:cac92000 r8:c0107f84 r7:00000004 r6:00000001 r5:000e20f8 r4:00000001
[   27.088947] Code: 1a000009 e1a04009 e3a06010 e1a05008 (e5943000)
[   27.095244] ---[ end trace 06d1dab86d6e6bab ]---

To fix that problem call iio_trigger_put(trig) only when trig is not
NULL.

Fixes: d5d24bcc0a ("iio: trigger: close race condition in acquiring trigger reference")
Signed-off-by: Marcin Niestroj <m.niestroj@grinn-global.com>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2017-05-21 12:36:59 +01:00
Jacopo Mondi
c545171968 iio: adc: max9611: Fix attribute measure unit
The power and current "shunt-resistor" attribute's 'show' function
displays the resistor value in milli-Ohms, while the ABI description
specifies it should be displayed in Ohms. Fix it.

Reported-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Jacopo Mondi <jacopo+renesas@jmondi.org>
Tested-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2017-05-14 16:38:55 +01:00
Dan Carpenter
5ba5b437ef iio: adc: ti_am335x_adc: allocating too much in probe
We should be allocating enough information for a tiadc_device struct
which is about 400 bytes but instead we allocate enough for a second
iio_dev struct which is over 2000 bytes.

Fixes: fea89e2dfc ("iio: adc: ti_am335x_adc: use variable names for sizeof() operator")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2017-05-14 16:21:13 +01:00
Eduardo Molinas
f35327f16b iio: adc: sun4i-gpadc-iio: Fix module autoload when OF devices are registered
If the driver is built as a module, it won't be autloaded if the devices
are registered via OF code because the OF device table
entries are not exported as aliases

Before the patch:
$ modinfo drivers/iio/adc/sun4i-gpadc-iio.ko | grep alias
alias:          platform:sun6i-a31-gpadc-iio
alias:          platform:sun5i-a13-gpadc-iio
alias:          platform:sun4i-a10-gpadc-iio

After the patch:
$ modinfo drivers/iio/adc/sun4i-gpadc-iio.ko | grep alias
alias:          of:N*T*Callwinner,sun8i-a33-thsC*
alias:          of:N*T*Callwinner,sun8i-a33-ths
alias:          platform:sun6i-a31-gpadc-iio
alias:          platform:sun5i-a13-gpadc-iio
alias:          platform:sun4i-a10-gpadc-iio

Signed-off-by: Eduardo Molinas <edu.molinas@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2017-05-07 14:45:41 +01:00
Eduardo Molinas
f83e36e0a3 iio: adc: sun4i-gpadc-iio: Fix module autoload when PLATFORM devices are registered
If the driver is built as a module, it won't be autloaded if the devices
are registered via PLATFORM code because the PLATFORM device table
entries are not exported as aliases

Before the patch:
$ modinfo drivers/iio/adc/sun4i-gpadc-iio.ko | grep alias
$

After the patch:
$ modinfo drivers/iio/adc/sun4i-gpadc-iio.ko | grep alias
alias:          platform:sun6i-a31-gpadc-iio
alias:          platform:sun5i-a13-gpadc-iio
alias:          platform:sun4i-a10-gpadc-iio

Signed-off-by: Eduardo Molinas <edu.molinas@gmail.com>
Acked-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2017-05-07 14:44:42 +01:00
Matt Ranostay
9122b54f26 iio: proximity: as3935: fix iio_trigger_poll issue
Using iio_trigger_poll() can oops when multiple interrupts
happen before the first is handled.

Use iio_trigger_poll_chained() instead and use the timestamp
when processed, since it will be in theory be 2 ms max latency.

Fixes: 24ddb0e4bb ("iio: Add AS3935 lightning sensor support")
Cc: stable@vger.kernel.org
Signed-off-by: Matt Ranostay <matt.ranostay@konsulko.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2017-05-07 13:21:55 +01:00
Matt Ranostay
275292d3a3 iio: proximity: as3935: fix AS3935_INT mask
AS3935 interrupt mask has been incorrect so valid lightning events
would never trigger an buffer event. Also noise interrupt should be
BIT(0).

Fixes: 24ddb0e4bb ("iio: Add AS3935 lightning sensor support")
CC: stable@vger.kernel.org
Signed-off-by: Matt Ranostay <matt.ranostay@konsulko.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2017-04-27 16:28:57 +01:00
Dan Carpenter
35fa70dfd6 iio: adc: Max9611: checking for ERR_PTR instead of NULL in probe
devm_iio_device_alloc() doesn't return ERR_PTRs, it returns NULLs.

Fixes: 69780a3bbc ("iio: adc: Add Maxim max9611 ADC driver")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2017-04-26 07:24:48 +01:00
Matt Ranostay
6272c0de13 iio: proximity: as3935: recalibrate RCO after resume
According to the datasheet the RCO must be recalibrated
on every power-on-reset. Also remove mutex locking in the
calibration function since callers other than the probe
function (which doesn't need it) will have a lock.

Fixes: 24ddb0e4bb ("iio: Add AS3935 lightning sensor support")
Cc: George McCollister <george.mccollister@gmail.com>
Signed-off-by: Matt Ranostay <matt.ranostay@konsulko.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2017-04-26 07:06:31 +01:00
Laura Abbott
e44adf05b8 staging/android: Update Ion TODO list
Most of the items have been taken care of by a clean up series. Remove
the completed items and add a few new ones.

Signed-off-by: Laura Abbott <labbott@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-18 20:43:14 +02:00
Laura Abbott
804ca94a98 staging: android: ion: Set query return value
This never got set in the ioctl. Properly set a return value of 0 on
success.

Signed-off-by: Laura Abbott <labbott@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-18 20:43:14 +02:00
Laura Abbott
15c6098cfe staging: android: ion: Remove ion_handle and ion_client
ion_handle was introduced as an abstraction to represent a reference to
a buffer via an ion_client. As frameworks outside of Ion evolved, the dmabuf
emerged as the preferred standard for use in the kernel. This has made
the ion_handle an unnecessary abstraction and prone to race
conditions. ion_client is also now only used internally. We have enough
mechanisms for race conditions and leaks already so just drop ion_handle
and ion_client. This also includes ripping out most of the debugfs
infrastructure since much of that was tied to clients and handles.
The debugfs infrastructure was prone to give confusing data (orphaned
allocations) so it can be replaced with something better if people
actually want it.

Signed-off-by: Laura Abbott <labbott@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-18 20:43:14 +02:00
Laura Abbott
e3b914bc7e staging: android: ion: Drop ion_map_kernel interface
Nobody uses this interface externally. Drop it.

Signed-off-by: Laura Abbott <labbott@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-18 20:43:14 +02:00
Laura Abbott
2f87f50b23 staging: android: ion: Rework heap registration/enumeration
The current model of Ion heap registration  is based on the outdated
model of board files. The replacement for board files (devicetree)
isn't a good replacement for what Ion wants to do. In actuality, Ion
wants to show what memory is available in the system for something else
to figure out what to use. Switch to a model where Ion creates its
device unconditionally and heaps are registed as available regions.
Currently, only system and CMA heaps are converted over to the new
model. Carveout and chunk heaps can be converted over when someone wants
to figure out how.

Signed-off-by: Laura Abbott <labbott@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-18 20:43:14 +02:00
Laura Abbott
eb9751dbe6 staging: android: ion: Collapse internal header files
Ion current has ion_priv.h and ion.h as header files. ion.h was intended
to be used for public APIs but Ion never ended up really having anything
public. Combine the two headers so there is only one internal header.

Signed-off-by: Laura Abbott <labbott@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-18 20:43:14 +02:00
Laura Abbott
ddeb587b94 staging: android: ion: Get rid of ion_phys_addr_t
Once upon a time, phys_addr_t was not everywhere in the kernel. These
days it is used enough places that having a separate Ion type doesn't
make sense. Remove the extra type and just use phys_addr_t directly.

Signed-off-by: Laura Abbott <labbott@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-18 20:43:14 +02:00
Laura Abbott
b0c7cb2623 staging: android: ion: Break the ABI in the name of forward progress
Several of the Ion ioctls were designed in such a way that they
necessitate compat ioctls. We're breaking a bunch of other ABIs and
cleaning stuff up anyway so let's follow the ioctl guidelines and clean
things up while everyone is busy converting things over anyway. As part
of this, also remove the useless alignment field from the allocation
structure.

Signed-off-by: Laura Abbott <labbott@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-18 20:43:14 +02:00
Laura Abbott
62b3a094cb staging: android: ion: Stop butchering the DMA address
Now that we have proper caching, stop setting the DMA address manually.
It should be set after properly calling dma_map.

Signed-off-by: Laura Abbott <labbott@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-18 20:43:14 +02:00
Laura Abbott
204f672255 staging: android: ion: Use CMA APIs directly
When CMA was first introduced, its primary use was for DMA allocation
and the only way to get CMA memory was to call dma_alloc_coherent. This
put Ion in an awkward position since there was no device structure
readily available and setting one up messed up the coherency model.
These days, CMA can be allocated directly from the APIs. Switch to using
this model to avoid needing a dummy device. This also mitigates some of
the caching problems (e.g. dma_alloc_coherent only returning uncached
memory).

Signed-off-by: Laura Abbott <labbott@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-18 20:41:12 +02:00
Laura Abbott
e4231bcda7 cma: Introduce cma_for_each_area
Frameworks (e.g. Ion) may want to iterate over each possible CMA area to
allow for enumeration. Introduce a function to allow a callback.

Signed-off-by: Laura Abbott <labbott@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-18 20:41:12 +02:00
Laura Abbott
f318dd083c cma: Store a name in the cma structure
Frameworks that may want to enumerate CMA heaps (e.g. Ion) will find it
useful to have an explicit name attached to each region. Store the name
in each CMA structure.

Signed-off-by: Laura Abbott <labbott@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-18 20:41:12 +02:00
Greg Kroah-Hartman
df47c0a638 Fifth set of IIO fixes for the 4.11 cycle.
As these are rather late in the cycle, they may sneak over into 4.12.
 There is a fix for a regression caused by another fix (hid sensors
 hardware seems to vary a lot in how various corner cases are handled).
 
 * ad7303
   - fix channel description. Numeric values were being passed as characters
   presumably leading to garbage from the userspace interface.
 * as3935
   - the write data macro was wrong so fix it.
 * bmp280
   - incorrect handling of negative values as being unsigned broke humidity
   calculation.
 * hid-sensor
   - Restore the poll and hysteresis values after resume as some hardware
   doesn't do it.
 * stm32-trigger
   - buglet in reading the sampling frequency
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Merge tag 'iio-fixes-for-4.11e' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-next

Jonathan writes:

Fifth set of IIO fixes for the 4.11 cycle.

As these are rather late in the cycle, they may sneak over into 4.12.
There is a fix for a regression caused by another fix (hid sensors
hardware seems to vary a lot in how various corner cases are handled).

* ad7303
  - fix channel description. Numeric values were being passed as characters
  presumably leading to garbage from the userspace interface.
* as3935
  - the write data macro was wrong so fix it.
* bmp280
  - incorrect handling of negative values as being unsigned broke humidity
  calculation.
* hid-sensor
  - Restore the poll and hysteresis values after resume as some hardware
  doesn't do it.
* stm32-trigger
  - buglet in reading the sampling frequency
2017-04-18 19:38:38 +02:00
Greg Kroah-Hartman
d47e538235 Fourth set of IIO new device support, features and cleanups for the 4.12 cycle
New device support
 * max1117, 1118 and 1119
   - new ADC driver
 * max9611
   - new ADC driver
 * pm8xxx hk/xoadc
   - new driver with some shared features broken out from the SPMI vadc.
 * sun4i-gpadc
   - A33 thermal sensor support (with associated rework)
 * stm32-dac
   - new driver and bindings
 * stm32 trigger
   - enable support of quadrature encoder device and counter modes
 
 Features
 * apds9960
   - use the runtime pm for normal suspend
 * stm32-adc
   - add opition to sest resolution via devicetree
 * xoadc
   - augment DT bindings to deal with some weird mux cases
 
 Cleanups
 * ad5933
   - protect direct mode using claim and release helpers
 * ade7759
   - S_IRUGO and friends to octal in two goes
 * adis16203
   - drop unnecessary brackets
 * hid-sensor
   - fix unbalanced pm_runtieme_enable error when probing after remove
 * lsm6dsx
   - use actual part numbers for device name when known
   - simplify data read pin parsing
 * mpu3050
   - avoid double reporting errors
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Merge tag 'iio-for-4.12d' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-next

Jonathan writes:

Fourth set of IIO new device support, features and cleanups for the 4.12 cycle

New device support
* max1117, 1118 and 1119
  - new ADC driver
* max9611
  - new ADC driver
* pm8xxx hk/xoadc
  - new driver with some shared features broken out from the SPMI vadc.
* sun4i-gpadc
  - A33 thermal sensor support (with associated rework)
* stm32-dac
  - new driver and bindings
* stm32 trigger
  - enable support of quadrature encoder device and counter modes

Features
* apds9960
  - use the runtime pm for normal suspend
* stm32-adc
  - add opition to sest resolution via devicetree
* xoadc
  - augment DT bindings to deal with some weird mux cases

Cleanups
* ad5933
  - protect direct mode using claim and release helpers
* ade7759
  - S_IRUGO and friends to octal in two goes
* adis16203
  - drop unnecessary brackets
* hid-sensor
  - fix unbalanced pm_runtieme_enable error when probing after remove
* lsm6dsx
  - use actual part numbers for device name when known
  - simplify data read pin parsing
* mpu3050
  - avoid double reporting errors
2017-04-18 17:13:31 +02:00
Martin Karamihov
18125dc003 staging: rtl8192u: fix incorrect type in assignment in ieee80211_tx.c
This patch fixes the following sparse warning:
ieee80211_tx.c:174:36: incorrect type in assignment (different base types)
ieee80211_tx.c:174:36: expected unsigned short [unsigned] [short] [usertype] <noident>
ieee80211_tx.c:174:36: got restricted __be16 [usertype] <noident>

by adding left side cast to __be16.

Signed-off-by: Martin Karamihov <martinowar@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-18 13:57:05 +02:00
Aishwarya Pant
df93c720e1 staging: rtl8188eu: fix sparse signedness warnings in rtw_generate_ie
Changed the type of wpa_ie_len from (int *) to (unsigned int *) in the
function rtw_get_wpa_ie(..) to suppress signedness mismatch warnings in
rtw_generate_ie of the type-

drivers/staging/rtl8188eu//core/rtw_ieee80211.c:1009:60: warning: incorrect
type in argument 2 (different signedness)
drivers/staging/rtl8188eu//core/rtw_ieee80211.c:1009:60:    expected int
*wpa_ie_len
drivers/staging/rtl8188eu//core/rtw_ieee80211.c:1009:60:    got unsigned
int *<noident>

Signed-off-by: Aishwarya Pant <aishpant@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-18 13:54:25 +02:00
Aishwarya Pant
8321643ccc staging: rtl8188eu: fix sparse signedness warnings in rtw_set_ie
Changed the type of sz from (int) to (unsigned int) to suppress
signedness mismatch warnings of the type-

drivers/staging/rtl8188eu//core/rtw_ieee80211.c:258:97: warning:
incorrect type in argument 5 (different signedness)
drivers/staging/rtl8188eu//core/rtw_ieee80211.c:258:97:    expected
unsigned int [usertype] *frlen
drivers/staging/rtl8188eu//core/rtw_ieee80211.c:258:97:    got int
*<noident>

Signed-off-by: Aishwarya Pant <aishpant@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-18 13:54:25 +02:00
Aishwarya Pant
af27bea462 staging: rtl8188eu: fix sparse signedness warnings in rtw_get_ie
Changed the type of len from (int *) to (unsigned int *) in the
function rtw_get_ie(..) and wherever this function is called to
suppress signedness mismatch warnings of the type-

drivers/staging/rtl8188eu//core/rtw_ap.c:78:60: warning: incorrect type
in argument 3 (different signedness)
drivers/staging/rtl8188eu//core/rtw_ap.c:78:60:    expected int *len
drivers/staging/rtl8188eu//core/rtw_ap.c:78:60:    got unsigned int
*<noident>

Signed-off-by: Aishwarya Pant <aishpant@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-18 13:54:25 +02:00
Colin Ian King
d9c7dd5db1 staging: rtl8723bs: clean up identical code on an if statement
The two different paths for an if statement are identical and hence
we can just replace it with the single statement.

Detected by CoverityScan, CID#1428443 ("Identical code for
different branches")

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-18 13:54:25 +02:00
Colin Ian King
ff8d351d71 staging: rtl8723bs: remove redundant comparisons of unsigned ints with >= 0
The comparison of mode >= 0 is redundant as mode is a u32 and this
is always true.  Remove this redundant code.

Detected with CoverityScan ("Unsigned compared against 0")

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-18 13:54:25 +02:00
Kevin Wern
baa7a586b5 staging: media/platform/bcm2835: remove gstreamer workaround
Gstreamer's v4l2src reacted poorly to certain outputs from the bcm2835
video driver's ioctl ops function vidioc_enum_framesizes, so a
workaround was created that could be activated by user input. This
workaround would replace the driver's ioctl ops struct with another,
similar struct--only with no function pointed to by
vidioc_enum_framesizes. With no response, gstreamer would attempt to
continue with some default settings that happened to work better.

However, this bug has been fixed in gstreamer since 2014, so we
shouldn't include this workaround in the stable version of the driver.

Signed-off-by: Kevin Wern <kevin.m.wern@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-18 13:54:24 +02:00
Tobin C. Harding
7c1c43615d staging: ks7010: fix checkpatch SPLIT_STRING
Checkpatch emits WARNING: quoted string split across lines.

Concatenate string onto single line.

Signed-off-by: Tobin C. Harding <me@tobin.cc>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-18 13:47:31 +02:00
Tobin C. Harding
f1e79f4b96 staging: ks7010: refactor SDIO read/write helpers
Driver SDIO code uses helper functions to do IO to the SDIO
device. Current helpers handle IO of a single byte as well as
multi-byte. Driver predominately uses single byte IO. If the
common case is made simple it simplifies the whole driver. The common
case can be made simple by splitting the multi-byte and single byte
calls into separate functions, i.e 4 functions in total, read single
byte, read multi-byte, write single byte, write multi-byte.

Also, we need to handle the debug code. Currently debug calls after
read/write fail access the IO buffer. This buffer, at best, does not hold
useful data on the error path, at worst is uninitialized and holds
garbage.

Split read/write helper functions into two functions each, one for
single byte IO and one for multi-byte IO. Fix all call sites. Do not
change the program logic.

Signed-off-by: Tobin C. Harding <me@tobin.cc>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-18 13:47:31 +02:00
Tobin C. Harding
a9d58d9ad8 staging: ks7010: fix checkpatch LINE_SPACING
Checkpatch emits CHECK: Please don't use multiple blank lines.

Remove multiple blank lines.

Signed-off-by: Tobin C. Harding <me@tobin.cc>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-18 13:47:31 +02:00
Tobin C. Harding
132f541532 staging: ks7010: fix checkpatch SPACE_BEFORE_TAB
Checkpatch emits WARNING: please, no space before tabs.

Remove space before tabs.

Signed-off-by: Tobin C. Harding <me@tobin.cc>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-18 13:47:31 +02:00
Tobin C. Harding
0dd30a74b9 staging: ks7010: remove err_ from non-error path label
goto label includes 'err_' suffix but is executed on non-error paths.

Remove err_ suffix from goto label.

Signed-off-by: Tobin C. Harding <me@tobin.cc>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-18 13:47:31 +02:00
Tobin C. Harding
e61e73d71b staging: ks7010: clean up SDIO source comments
SDIO code currently has a number of unneeded comments. Following
kernel coding style we do not need extraneous comments, especially on
code where it is clear what is being done. Spelling typos can be
fixed.

Remove unnecessary comments, fix typos in comments.

Signed-off-by: Tobin C. Harding <me@tobin.cc>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-18 13:47:31 +02:00
Tobin C. Harding
3dfb942f03 staging: ks7010: add struct comment to ks_sdio_card
ks_sdio_card structure description does not have a kernel doc format
comment.

Add kernel doc format comment to struct ks_sdio_card.

Signed-off-by: Tobin C. Harding <me@tobin.cc>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-18 13:47:31 +02:00
Tobin C. Harding
18bd6dd1f8 staging: ks7010: move hw info into dev private data
Currently driver uses a hardware information struct description to
group some SDIO related functionality (work, work queue, sdio private
data pointer). This structure is then embedded in the device private
data structure. Having nested structures described in different header
files means that to view the device private data programmers must open
two header files. This structure could be embedded anonymously in the
device private data and achieve the same result (grouping of function
specific to SDIO) without the need to open multiple headers. However,
the SDIO private data structure already has various different data and
pointers, adding the embedded structure adds little extra meaning and
lengthens all the dereferences throughout the driver, often meaning
addition line breaks and braces. We can increase readability and
reduce code complexity by moving the hardware information data and
pointers to directly be within the device private data structure
description.

While preparing for this refactoring it was noted that the identifier
currently used for the delayed work is 'rw_wq', this is confusing
since the 'wq' suffix typically means 'work queue'. This identifier
would be more meaningful if it used the suffix 'dwork' as does the
declaration of queue_delayed_work() (include/linux/workqueue.h).

The identifier for the work queue is currently 'ks7010sdio_wq'. This
identifier can be shortened without loss of meaning because there is
only one work queue within the driver. Identifier 'wq' is typical
within in-tree driver code and aptly describes the pointer.

Current pointer to the SDIO private data is identified by 'sdio_card',
this is sufficiently meaningful from within the hw_info structure but
once the hw_info_t structure is removed the pointer would be better to
have a prefix appended to it to retain the prior level of meaning.

Move members from struct hw_info_t to struct ks_wlan_private.

Rename identifiers;
struct delayed_work pointer 'rw_wq' to 'rw_dwork'.
struct workqueue_struct pointer 'ks7010sdio_wq' to 'wq'.
struct ks_sdio_card  pointer 'sdio_card' to 'ks_sdio_card'.

Remove structure description hw_info_t. Fix init/destroy calls. Fix
all call sites, SDIO private data access calls, and queuing calls.

Signed-off-by: Tobin C. Harding <me@tobin.cc>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-18 13:47:31 +02:00
Tobin C. Harding
321dabdc74 staging: ks7010: move tasklet_struct to ks_wlan_private
Currently a pointer to the tasklet_struct used for bottom half
processing on the receive path is within the hw_info_t structure. This
structure is then embedded in the device private data
structure. Having the tasklet_struct nested does not add meaning to
the device private data, device private data already (and typically)
has various data relating to the device, there is no real need to
separate the tasklet_struct to a SDIO specific structure. While not
adding allot of extra meaning having the nested structure means the
programmer must open two header files to read the description of the
device private data, the code would be easier to read if the device
private data struct description was not spread over two files.

Move tasklet_struct out of sdio header file and into the device
private data structure description.

Signed-off-by: Tobin C. Harding <me@tobin.cc>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-18 13:33:17 +02:00
Tobin C. Harding
07e483c14b staging: ks7010: rename wakeup work struct
struct work_struct uses identifier ks_wlan_wakeup_task, this is
confusing because the 'task' suffix implies that this is a
tasklet_struct instead of a work struct. Suffix 'work' would be more
clear. The code would be easier to read if it followed the principle
of least surprise and used the 'work' suffix for a work_struct
identifier.

Rename work_struct structure 'ks_wlan_wakeup_task' to 'wakeup_work'.

Signed-off-by: Tobin C. Harding <me@tobin.cc>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-18 13:33:17 +02:00
Tobin C. Harding
b9ca8bb4e4 staging: ks7010: clean up SDIO header comments
SDIO header file does not use kernel doc format struct
comments. Adding them aids readability and enables documentation to be
built from the source code. Other comments may be tidied up as we do this.

Add kernel format struct comments. Tidy up comments.

Signed-off-by: Tobin C. Harding <me@tobin.cc>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-18 13:33:17 +02:00
Tobin C. Harding
055da4f9b9 staging: ks7010: fix complete_handler
complete_handler() takes void * types as parameters. void * parameters are then
cast to struct types. Call sites for this function either pass in NULL
or pointers to the struct types cast to void *. This casting is
unnecessary and can be removed.

Struct tx_device_buffer (which contains a pointer member to the
complete_handler() function) has as member 'ks_wlan_priv *priv' this is
unnecessary, we always have a pointer to this struct there is no need
to store it here.

The complete_handler can be more clearly defined by using struct
pointer types instead of void * types. The code is currently
unnecessarily complex, storing and passing extraneous pointer
parameters.

Remove unnecessary parameters, unnecessary casting to/from 'void
*'. Fix all call sites involving complete_handler().

Signed-off-by: Tobin C. Harding <me@tobin.cc>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-18 13:33:17 +02:00
Tobin C. Harding
68711cebcb staging: ks7010: replace defines with enum types
Header has multiple constants defined using preprocessor
directive. In the cases where these are an integer progression an
enumeration type can be used. Doing so adds documentation to the code
and makes the usage explicit. Maintain original constant value, this
value is returned by the device.

Replace (integer progression) preprocessor constants with enumeration
type.

Signed-off-by: Tobin C. Harding <me@tobin.cc>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-18 13:33:17 +02:00
Tobin C. Harding
bfee6a2319 staging: ks7010: create reg_status_type enum type
SDIO header currently defines unused constants READ_STATUS_BUSY and
WRITE_STATUS_IDLE. There are reciprocal constants that are used
READ_STATUS_IDLE and WRITE_STATUS_BUSY. We can roll these into a
single enumeration type and remove the two that are unused.

Add enumeration type containing IDLE/BUSY pair that are currently used
within the SDIO source. Change source to use new enum types.

Signed-off-by: Tobin C. Harding <me@tobin.cc>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-18 13:33:17 +02:00
Darryl T. Agostinelli
4330887f2e staging: greybus: uart.c: Remove include linux/serial.h
$ make includecheck | grep staging
./drivers/staging/greybus/uart.c: linux/serial.h is included more than once.

Signed-off-by: Darryl T. Agostinelli <dagostinelli@gmail.com>
Reviewed-by: Alex Elder <elder@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-18 13:27:16 +02:00
Darryl T. Agostinelli
6163904e01 staging: greybus: light.c: Remove include linux/version.h
Fixes:
$ make versioncheck | grep staging
./drivers/staging/greybus/light.c: 15 linux/version.h not needed.

Signed-off-by: Darryl T. Agostinelli <dagostinelli@gmail.com>
Reviewed-by: Rui Miguel Silva <rmfrfs@gmail.com>
Reviewed-by: Alex Elder <elder@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-18 13:27:15 +02:00
Skanda Guruanand
54094ee812 staging: lustre: Fix sparse endianness warnings cast to restricted __le64 and __le32
The struct lu_dirpage elements in lustre_idl.h file are modified to
__le64 and __le32 types since the  elements are always converted from
litte endian to processor native format in mdc_request.c file.

Following warnings are removed by this fix.

drivers/staging/lustre/lustre/mdc/mdc_request.c:958:42: warning: cast to restricted __le64
drivers/staging/lustre/lustre/mdc/mdc_request.c:959:42: warning: cast to restricted __le64
drivers/staging/lustre/lustre/mdc/mdc_request.c:962:42: warning: cast to restricted __le64
drivers/staging/lustre/lustre/mdc/mdc_request.c:963:42: warning: cast to restricted __le64
drivers/staging/lustre/lustre/mdc/mdc_request.c:985:50: warning: cast to restricted __le32
drivers/staging/lustre/lustre/mdc/mdc_request.c:1193:24: warning: cast to restricted __le64
drivers/staging/lustre/lustre/mdc/mdc_request.c:1328:25: warning: cast to restricted __le64
drivers/staging/lustre/lustre/mdc/mdc_request.c:1329:23: warning: cast to restricted __le64
drivers/staging/lustre/lustre/mdc/mdc_request.c:1332:25: warning: cast to restricted __le64
drivers/staging/lustre/lustre/mdc/mdc_request.c:1333:23: warning: cast to restricted __le64

Signed-off-by: Skanda Guruanand <skanda.kashyap@gmail.com>
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-18 13:27:15 +02:00
Craig Inches
983ca9b321 Staging: lustre cleanup macros in libcfs_private.h
This resolves a checkpatch warning that "Single statement macros should
not use a do {} while (0) loop" by removing the loop and adjusting line
length accordingly.

Signed-off-by: Craig Inches <Craig@craiginches.com>
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-18 13:27:15 +02:00
Alexandre Bailon
2e2fd6be42 staging: greybus: make cport_quiesce() method optional
The cport_quiesce() method is mandatory in the case of
the es2 Greybus hd controller to shutdown the cports on
the es2 controller.
In order to add support of another controller which may not
need to shutdown its cports, make the cport_quiesce() optional,
and check if the controller implement it before to use it.

Signed-off-by: Alexandre Bailon <abailon@baylibre.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-18 13:27:15 +02:00
Paul Gortmaker
4064771da8 staging/media: make atomisp vlv2_plat_clock explicitly non-modular
The Makefile / Kconfig currently controlling compilation of this code is:

clock/Makefile:obj-$(CONFIG_INTEL_ATOMISP)     += vlv2_plat_clock.o

atomisp/Kconfig:menuconfig INTEL_ATOMISP
atomisp/Kconfig:        bool "Enable support to Intel MIPI camera drivers"

...meaning that it currently is not being built as a module by anyone.

Lets remove the modular code that is essentially orphaned, so that
when reading the driver there is no doubt it is builtin-only.

Since module_init was already not in use by this driver, the init
ordering remains unchanged with this commit.

Also note that MODULE_DEVICE_TABLE is a no-op for non-modular code.

We also delete the MODULE_LICENSE tag etc. since all that information
is already contained at the top of the file in the comments.

Cc: Mauro Carvalho Chehab <mchehab@kernel.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Alan Cox <alan@linux.intel.com>
Cc: linux-media@vger.kernel.org
Cc: devel@driverdev.osuosl.org
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-18 13:27:15 +02:00