Read and Download Device Driver Interview Questions Answers Free Ebooks in PDF format - ALGEBRA REGENTS JANUARY 2013 ANSWERS IMPERIALISM REVIEW ANSWER KEY BHU BSC. Linux Device Driver Interview Questions And Answers Pdf DownloadLinux device driver interview questions and answers. Free Pdf Download 2009. Download Free Device Drivers Job Interview Questions Answers PDF. Download Linux Device Drivers Questions PDF. Enter a valid e-mail address.
Device drivers take on a special role in the Linux kernel. They are distinct programmatically abstracted “black boxes” that make a particular piece of hardware respond to a well-defined internal programming interface; they hide completely the details of how the device works.
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How to make a unique acces to linux kernel driver from application
I have such task to do: There is an existing driver for some device (NVMe storage in my case), and I want to have unique access for it from my application (i.e. only my app can sent ioctl's to this ...
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nr_cpu_ids vs NR_CPUS in Linux Kernel
I am trying to understand how many processors are supported by Linux Kernel.grep NR_CPUS /boot/config-`uname -r` Will give me the maximum number of processors supported by kernel, which I can ...
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setting up a development environment for Linux device driver
I am trying to read the LDD book by Jonathan Corbet, Greg Kroah-Hartman, Alessandro Rubini and implement the sample modules. So to begin with, I tried setting up a development system. Installed Ubuntu ...
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How procfs outputs /proc/iomem?
I have looked into similar questions on this site (listed at the end) but still feel like missing a couple points, hopefully someone can help here: Is there a hook into the proc file system that ...
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Does applying a device tree overlay trigger driver probing?
Say I have a Linux system running on an SoC (by which I mean an ARM CPU hooked up to an FPGA). If I reprogram the FPGA with a new bitstream, the devices attached to the system have now changed. It's ...
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How to avoid virtual fragmentation problem for 32 bit linux kernel?
Everybody knows the problem of virtual memory fragmentation in a system. How can we improve the fragmentation problem from the kernel driver perspective in 32-bit kernel?Since we can't control the ...
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What is the right function to have chip specific initialization in Linux i2c drivers
I am trying to initialize a status register of a ADT746x chip. The Linux kernel has hwmon drivers for this chip, but it is not configured.I need to initialize few sets of register as soon as device ...
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How to use libnl with netlink socket for connect devices to AP with WPA2?
I've developed in C language, some function for managing wifi programmatically, on my embedded device. The code below shows the function that I use to associate and connect my device to an open AP (...
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why tty and ttyS character devices have the same major number?
The output of /proc/devices shows 3 devices with the same major number.Does major number is unique number?cat /proc/devices:Character devices: ...
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Linux Device Drivers Interview Questions
insmod printk doesn't work, but works for rmmod
Since I'm still learning about kernel module programming, unable to figure out the rational behind the issue. When I run insmod hello.ko, dmesg or /var/logs/message doesn't show/print the message, ...
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what is the meaning of obj-m: in Linux device driver Makefile
Interview Questions And Answers Pdf
I am very new to Linux device drivers.In Makefile what is obj-m?What is the difference between obj-m and obj-m+?
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YOCTO : Modify Linux OS features by editing it's device tree
I am using YOCTO project SUMO release to Build Linux kernel for my embedded board. I want to customize the features of my board. They told me to edit the device tree file.My question is what is ...
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What do I need to do to set up usb audio gadget i/o on a beaglebone running debian?
I want to use alsa on a Beaglebone Black to send audio through usb audio out and receive it on my computer. I have seen that there are some gadgets in a legacy folder in the kernel, and seen some ...
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Is there any limit on the iterations with seq_file
I wrote a basic code which will print process name using seq_file in proc file.#include <linux/module.h>#include <linux/init.h>#include <linux/kernel.h> #include <linux/...
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how does device tree work? how does any devices and drivers registered on Bus?
how does device tree work? how does any devices and drivers registered on Bus ? how does struct bus_type ,struct device and struct device_driver establish connection with each other ?
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