Questions tagged [android-kernel]

Core component of Android OS that bridges between applications and the actual data processing done at the hardware level. It is based on the Linux kernel.

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bionic/libc/include/sys/epoll.h:67:8: error: redefinition of 'epoll_event'

I am getting the following exception while building the ROM for a lineageos project and need some help diagnosing and resolving the issue: In file included from device/lenovo/tb8504f/camera/QCamera2/util/QCameraDisplay.cpp:53: In file included from…
dazza5000
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error: invalid application of 'sizeof' to an incomplete type 'struct snd_codec_metadata'

I am getting the following exception while building the ROM for a lineageos project and need some help diagnosing and resolving the issue: FAILED:…
dazza5000
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recipe for target 'arch/arm64/boot/dts/qcom/msm8917-pmi8937-qrd-sku5.dtb' failed

I am getting the following exception while building the recovery for a lineageos project and need some help diagnosing and resolving the issue: ERROR (phandle_references): Reference to non-existent node or label "smb_int_default" ERROR…
dazza5000
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ebtables.c:61:3: error: implicit declaration of function 'xt_compat_calc_jump' [-Werror=implicit-function-declaration]

I am getting the following exception while building the recovery for a lineageos project and need some help diagnosing and resolving the issue Device tree:=…
dazza5000
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*** Missing UAPI file /home/lineageos/kernel/lenovo/tb8504f/include/uapi/linux/netfilter/xt_DSCP.h. Stop. while building recoveryimage

I am trying to build the kernel for a custom ROM and am getting the following exception: *** Missing UAPI file /home/lineageos/kernel/lenovo/tb8504f/include/uapi/linux/netfilter/xt_DSCP.h. Stop. I've installed the following package on Ubuntu, but…
dazza5000
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Android Kernel - Unable to activate CONFIG_USB_ETH=y in the kernel dot config

I am trying to configure Android Kernel (msm-4.4)to have USB-CDC Ethernet Support in order to implement USB tethering in the low level. What I want to do is to migrate what's done in the following link to Android:…
mozcelikors
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Interact with virtual serial device in polling mode in linux C

I'm trying to enable polling support for a serial over USB driver on an android kernel, so that I can debug it using kgdboc. I based myself on the code from these…
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How to enable zram swap in Android Build/kernel?

How to enable zram as swap device in android linux kernel ? Is there any way create zram before init process ? kernelcmdline or kernel config. As per zram.txt no default way.
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How to access members of nested struct and assign them the values read from device tree?

Following is my device tree: Can anybody correct this code, I'm new to c and driver development, how to access members of a nested struct and assign the values read from device tree and populate it the values in sys class. I'm expecting the…
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Can't run my goldfish kernel with android emulator

I am trying to compile the goldfish kernel: (is it the right branch? cross-compile toolchain?) git clone https://android.googlesource.com/kernel/goldfish cd goldfish git checkout -t origin/android-goldfish-3.10 -b android-goldfish-3.10 export…
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How to modify the touchscreen driver on android to get automatic fast screen touching?

My device is huawei p7,the app would detect the root permission,so i want to midify the ts driver to get automatic fast screen touching.. The ts driver…
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Android kernel module compile error

Well. I am going to add an android kernel module.Here is how am I doing it. First, I created a vuln directory under the /drives with these files in it.(Kconfig,Makefile,vuln.c) The content of Kconfig is config VULN tristate "vuln module" …
Xudong Shao
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Converting source blob Android kernel back to Git repository

Hope this is the right place to ask, and not softwareengineering.stackexchange. A couple of enterprising people released a CM11 build for my ancient (Samsung Galaxy S DUOS, released 2012) Android device some time ago. I successfully rebuilt it…
michaeljt
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How to identify build-specific kernel files?

The Linux kernel repository contains files for various supported architectures, but in actual build, not all files are used. If I have a modified Linux kernel source code, which contains all the files from the original tree but doesn't use them, how…
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I have an Android app to communicate with pic micro controller using uart pin. But i cant install the app on device. Any solution?

Am using odroid C2 with Android 5.1, And using Github code (https://github.com/androidthings/sample-uartloopback/tree/master/app). I can see COM Port in Device manager when i connect the RX TX pin with PC using a bridge. And I can't install the app…
Aadhi
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