linux-stable.git/drivers/mfd, branch linux-3.4.y

mfd: tc6393xb: Fail ohci suspend if full state restore is required

2015-04-14T09:33:43+00:00

commit 1a5fb99de4850cba710d91becfa2c65653048589 upstream.

Some boards with TC6393XB chip require full state restore during system
resume thanks to chip's VCC being cut off during suspend (Sharp SL-6000
tosa is one of them). Failing to do so would result in ohci Oops on
resume due to internal memory contentes being changed. Fail ohci suspend
on tc6393xb is full state restore is required.

Recommended workaround is to unbind tmio-ohci driver before suspend and
rebind it after resume.

Signed-off-by: Dmitry Eremin-Solenikov 
Signed-off-by: Lee Jones 
Signed-off-by: Zefan Li

mfd: max8997: Fix possible NULL pointer dereference on i2c_new_dummy error

2014-05-06T14:51:41+00:00

commit 97dc4ed3fa377ec91bb60ba98b70d645c2099384 upstream.

During probe the driver allocates dummy I2C devices for RTC, haptic and
MUIC with i2c_new_dummy() but it does not check the return value of this
calls.

In case of error (i2c_new_device(): memory allocation failure or I2C
address cannot be used) this function returns NULL which is later used
by i2c_unregister_device().

If i2c_new_dummy() fails for RTC, haptic or MUIC devices, fail also the
probe for main MFD driver.

Signed-off-by: Krzysztof Kozlowski 
Signed-off-by: Lee Jones 
Signed-off-by: Greg Kroah-Hartman

mfd: max8998: Fix possible NULL pointer dereference on i2c_new_dummy error

2014-05-06T14:51:41+00:00

commit ed26f87b9f71693a1d1ee85f5e6209601505080f upstream.

During probe the driver allocates dummy I2C device for RTC with i2c_new_dummy() but it does not check the return value of this call.

In case of error (i2c_new_device(): memory allocation failure or I2C
address cannot be used) this function returns NULL which is later used
by i2c_unregister_device().

If i2c_new_dummy() fails for RTC device, fail also the probe for
main MFD driver.

Signed-off-by: Krzysztof Kozlowski 
Signed-off-by: Lee Jones 
Signed-off-by: Greg Kroah-Hartman

mfd: max8925: Fix possible NULL pointer dereference on i2c_new_dummy error

2014-05-06T14:51:41+00:00

commit 96cf3dedc491d2f1f66cc26217f2b06b0c7b6797 upstream.

During probe the driver allocates dummy I2C devices for RTC and ADC
with i2c_new_dummy() but it does not check the return value of this
calls.

In case of error (i2c_new_device(): memory allocation failure or I2C
address cannot be used) this function returns NULL which is later used
by i2c_unregister_device().

If i2c_new_dummy() fails for RTC or ADC devices, fail also the probe
for main MFD driver.

Signed-off-by: Krzysztof Kozlowski 
Signed-off-by: Lee Jones 
Signed-off-by: Greg Kroah-Hartman

mfd: adp5520: Restore mode bits on resume

2013-05-08T02:51:57+00:00

commit c6cc25fda58da8685ecef3f179adc7b99c8253b2 upstream.

The adp5520 unfortunately also clears the BL_EN bit when the nSTNDBY bit is
cleared. So we need to make sure to restore it during resume if it was set
before suspend.

Signed-off-by: Lars-Peter Clausen 
Acked-by: Michael Hennerich 
Signed-off-by: Samuel Ortiz 
Signed-off-by: Greg Kroah-Hartman

mfd: Only unregister platform devices allocated by the mfd core

2013-01-17T16:50:45+00:00

commit b9fbb62eb61452d728c39b2e5020739c575aac53 upstream.

mfd_remove_devices would iterate over all devices sharing a parent with
an mfd device regardless of whether they were allocated by the mfd core
or not. This especially caused problems when the device structure was
not contained within a platform_device, because to_platform_device is
used on each device pointer.

This patch defines a device_type for mfd devices and checks this is
present from mfd_remove_devices_fn before processing the device.

Signed-off-by: Charles Keepax 
Tested-by: Peter Tyser 
Reviewed-by: Mark Brown 
Signed-off-by: Samuel Ortiz 
Signed-off-by: Greg Kroah-Hartman

mfd: wm8994: Add support for WM1811 rev E

2013-01-17T16:50:45+00:00

commit fee546ce8cfd9dea1f53175f627e17ef5ff05df4 upstream.

This is supported identically to the previous revisions.

Signed-off-by: Mark Brown 
Signed-off-by: Samuel Ortiz 
Signed-off-by: Greg Kroah-Hartman

mfd: max8925: Move _IO resources out of ioport_ioresource

2012-10-12T20:38:38+00:00

commit bee6e1fa617b1fb7f6f91033428410e05f5ab0ed upstream.

The removal of mach/io.h from most ARM platforms also set the range of
valid IO ports to be empty for most platforms when previously any 32
bit integer had been valid. This makes it impossible to add IO resources
as the added range is smaller than that of the root resource for IO ports.

Since we're not really using IO memory at all fix this by defining our
own root resource outside the normal tree and make that the parent of
all IO resources. This also ensures we won't conflict with read IO ports
if we ever run on a platform which happens to use them.

Signed-off-by: Mark Brown 
Acked-by: Arnd Bergmann 
Acked-by: Haojian Zhuang 
Tested-by: Haojian Zhuang 
Signed-off-by: Samuel Ortiz 
Signed-off-by: Greg Kroah-Hartman

ARM: pxa: remove irq_to_gpio from ezx-pcap driver

2012-08-15T15:10:32+00:00

commit 59ee93a528b94ef4e81a08db252b0326feff171f upstream.

The irq_to_gpio function was removed from the pxa platform
in linux-3.2, and this driver has been broken since.

There is actually no in-tree user of this driver that adds
this platform device, but the driver can and does get enabled
on some platforms.

Without this patch, building ezx_defconfig results in:

drivers/mfd/ezx-pcap.c: In function 'pcap_isr_work':
drivers/mfd/ezx-pcap.c:205:2: error: implicit declaration of function 'irq_to_gpio' [-Werror=implicit-function-declaration]

Signed-off-by: Arnd Bergmann 
Acked-by: Haojian Zhuang 
Cc: Samuel Ortiz 
Cc: Daniel Ribeiro 
Signed-off-by: Greg Kroah-Hartman

random: remove rand_initialize_irq()

2012-08-15T15:10:29+00:00

commit c5857ccf293968348e5eb4ebedc68074de3dcda6 upstream.

With the new interrupt sampling system, we are no longer using the
timer_rand_state structure in the irq descriptor, so we can stop
initializing it now.

[ Merged in fixes from Sedat to find some last missing references to
  rand_initialize_irq() ]

Signed-off-by: "Theodore Ts'o" 
Signed-off-by: Sedat Dilek 
Signed-off-by: Greg Kroah-Hartman