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20 TechQA 2023-11-23T18:49:06.910000Writing to a simple char device module from the user space with echo - Cannot see the write taking place
179 views
Asked by user3719581
how to get struct device's private data in the Linux's chrdev ->open() function?
672 views
Asked by candylife9
Module parameter array in Linux module not showing up in sysfs
397 views
Asked by Alessio Malavasi
Python reads empty bytearray from character device
86 views
Asked by TecDroiD
why Variable has incomplete type 'struct file_operations' though importing fs.h?
579 views
Asked by oki doki
mmap more than one buffer in kernel is crashing please help (using dma_mmap_coherent)
361 views
Asked by Mathieeo
How to debug kernel log?
329 views
Asked by autistic456
kernel output weird dmesg of my driver module
348 views
Asked by autistic456
Why does module failed to load? (/dev/scull0 : no such device or address)
417 views
Asked by autistic456
Segmentation fault while trying to boot after adding a device driver
670 views
Asked by Sharat Chandra
Are system calls thread-safe?
508 views
Asked by Ahmad Afkande
Changing default permissions on IOctl cdev
424 views
Asked by Alex Hoffmann
Why does cat call read() twice when once was enough?
1.4k views
Asked by Dsrivast
Replacing `chardev` by `mmap`
101 views
Asked by Cijay
Infinite printing on read command of character device (through cat command)
60 views
Asked by Santino
Why am I getting an error message when trying to "cat" my char device driver?
1.5k views
Asked by toastedDeli
Simple character device not working as expected
847 views
Asked by Cassie H.
character device: choose the device to read/write
680 views
Asked by PierreOlivier
Registering Mapped Linux Character Device Memory with cudaHostRegister Results in Invalid Argument
974 views
Asked by Yoelson
Why doesn't device_create return error when a file already exists?
668 views
Asked by Mateusz Piotrowski