Format specifier %p can leak kernel addresses while not valuing the
kptr_restrict system settings. When kptr_restrict is set to (1), kernel
pointers printed using the %pK format specifier will be replaced with 0's.
So that %pK will not leak kernel pointers to unprivileged users.
So change the format specifier from %p to %pK.
Debugging Note : &pK prints only Zeros as address. if you need actual
address information, pls echo 0 to kptr_restrict.
$ echo 0 > /proc/sys/kernel/kptr_restrict
Change-Id: I0baf2be2d5a476e2e4267f20b99d0ddf5492469e
Signed-off-by: Mallikarjuna Reddy Amireddy <mamire@codeaurora.org>
ITE tech touch driver puts the controller to IDLE state in suspend
function through an i2c write into controller register space. But
due to multiple triggers of fb blank events, the suspend
function is called repeatatively without resume, and the driver
causes i2c nacks in suspend function while again putting the
controller is IDLE state. This keeps the QUP5 clock ON and XO shutdown
doesn't happen.
This change prevents the touch driver to execute the i2c write, to
put the controller in IDLE state, by repeatative fb blank events,
and causes XO shutdown to happen within time limits.
Change-Id: Ie3ee6b861c10ae901dea54f252f6a799d688f02a
Signed-off-by: Shantanu Jain <shjain@codeaurora.org>
ITE tech touch driver dynamically detects the controller attached
to the device in its probe. And if the driver fails to identify
the controller, it exits the probe with the error code. But in the
probe error path, it doesn't retain the error code, replace it
with zero and registers the device instead of failing.
This change corrects the probe error path of ITE tech touch driver
and makes sure it returns the error code if it fails.
Change-Id: I8f193ee10076b6cf058b0a6940db54f71f70b758
Signed-off-by: Shantanu Jain <shjain@codeaurora.org>
Add low reset gpio and delay reset support for ITE tech
driver.
ITE tech controller support low reset gpio configuration. This
property is parsed from the DT, and reset gpio is set to low.
Reset delay value is also parsed from DT which is required by the
ITE tech controller.
Change-Id: I314677747e8bbbcb273cd898376bbe03197c8c25
Signed-off-by: Shantanu Jain <shjain@codeaurora.org>
Do not put the ITE tech touchscreen driver in infinite
loop while probing.
Sometimes, when there is multiple touchscreen support on the
same snapdragon device, then the dynamic detection is used
to confirm which touchscreen is connected to the device.
So, this change will not make the CPUs to get hogged with
infinite loop of ITE tech driver.
Now it can easily get out of probe with error path releasing
the resources properly.
Change-Id: Ib9905017fc18999e7ab7c9cb8bc1af398f5f9791
Signed-off-by: Shantanu Jain <shjain@codeaurora.org>
WCD audio codecs contain SPI slave hardware module to provide access
to codec memory and SPI register space. Change adds driver for this
slave hardware. This driver uses regmap for SPI internal register
accesses and plugs in to standard SPI framework as child device to
master controller driver.
CRs-Fixed: 1049012
Change-Id: I0640ac1ed60a2ec3633636760593211ecd2f9c2d
Signed-off-by: Bhalchandra Gajare <gajare@codeaurora.org>
