Question

mmap more than one buffer in kernel is crashing please help (using dma_mmap_coherent)

score 318 · Answer 1 · 2020-09-30 19:40:21

318

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mmap more than one buffer in kernel is crashing please help (using dma_mmap_coherent)

Published on 30 September 2020 at 19:40

score 141 · Answer 2 · 2023-11-23 18:49:06

141

Views

Writing to a simple char device module from the user space with echo - Cannot see the write taking place

Published on 23 November 2023 at 18:49

score 535 · Answer 3 · 2020-12-09 12:42:53

535

Views

why Variable has incomplete type 'struct file_operations' though importing fs.h?

Published on 09 December 2020 at 12:42

score 621 · Answer 4 · 2017-05-14 13:38:02

621

Views

Why doesn't device_create return error when a file already exists?

Published on 14 May 2017 at 13:38

score 20 · Answer 5 · 2018-05-17 21:20:01

20

Views

Infinite printing on read command of character device (through cat command)

Published on 17 May 2018 at 21:20

score 47 · Answer 6 · 2021-06-21 05:38:49

47

Views

Python reads empty bytearray from character device

Published on 21 June 2021 at 05:38

score 2.5k · Answer 7 · 2017-02-14 20:41:05

2.5k

Views

Write to debugfs from Linux Kernel Module

Published on 14 February 2017 at 20:41

score 6.1k · Answer 8 · 2017-02-14 20:01:30

6.1k

Views

Getting ENOTTY on ioctl for a Linux Kernel Module

Published on 14 February 2017 at 20:01

score 1.2k · Answer 9 · 2016-06-20 09:41:44

1.2k

Views

map reserver memory at boot to user space using remap_pfn_range

Published on 20 June 2016 at 09:41

score 382 · Answer 10 · 2020-05-26 10:18:00

382

Views

Why does module failed to load? (/dev/scull0 : no such device or address)

Published on 26 May 2020 at 10:18

score 327 · Answer 11 · 2020-05-26 12:46:28

327

Views

kernel output weird dmesg of my driver module

Published on 26 May 2020 at 12:46

score 310 · Answer 12 · 2020-05-31 11:15:14

310

Views

How to debug kernel log?

Published on 31 May 2020 at 11:15

score 84 · Answer 13 · 2019-03-12 18:43:16

84

Views

Replacing `chardev` by `mmap`

Published on 12 March 2019 at 18:43

score 1.4k · Answer 14 · 2020-02-03 18:58:26

1.4k

Views

Why does cat call read() twice when once was enough?

Published on 03 February 2020 at 18:58

score 638 · Answer 15 · 2020-04-24 03:17:27

638

Views

Segmentation fault while trying to boot after adding a device driver

Published on 24 April 2020 at 03:17

score 642 · Answer 16 · 2022-07-30 11:09:42

642

Views

how to get struct device's private data in the Linux's chrdev ->open() function?

Published on 30 July 2022 at 11:09

score 18k · Answer 17 · 2016-10-13 04:20:46

18k

Views

Opening a device file fails due to No such device or address

Published on 13 October 2016 at 04:20

score 736 · Answer 18 · 2016-10-19 09:23:05

736

Views

Should Linux character devices terminate read() with newline

Published on 19 October 2016 at 09:23

score 819 · Answer 19 · 2017-10-22 18:20:46

819

Views

Simple character device not working as expected

Published on 22 October 2017 at 18:20

score 202 · Answer 20 · 2014-04-29 19:48:47

202

Views

How stable are major and minor mode of a chardev?

Published on 29 April 2014 at 19:48

List Question

mmap more than one buffer in kernel is crashing please help (using dma_mmap_coherent)

Writing to a simple char device module from the user space with echo - Cannot see the write taking place

why Variable has incomplete type 'struct file_operations' though importing fs.h?

Why doesn't device_create return error when a file already exists?

Infinite printing on read command of character device (through cat command)

Python reads empty bytearray from character device

Write to debugfs from Linux Kernel Module

Getting ENOTTY on ioctl for a Linux Kernel Module

map reserver memory at boot to user space using remap_pfn_range

Why does module failed to load? (/dev/scull0 : no such device or address)

kernel output weird dmesg of my driver module

How to debug kernel log?

Replacing `chardev` by `mmap`

Why does cat call read() twice when once was enough?

Segmentation fault while trying to boot after adding a device driver

how to get struct device's private data in the Linux's chrdev ->open() function?

Opening a device file fails due to No such device or address

Should Linux character devices terminate read() with newline

Simple character device not working as expected

How stable are major and minor mode of a chardev?

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