In a device driver for some PCI hardware, I have an ioctl call that waits for an incoming interrupt on the PCI bus. Using wait_queue_head开发者_运维问答_t, I put the task to sleep by calling schedule(
I was reading the LK开发者_开发知识库MPG ( See Section 4.1.4. Unregistering A Device ) and it wasn\'t clear to me when to use the try_module_get / module_put functions.Some of the LKMPG examples use t
My latest microprocessor( Freescale iMX233 ) has 8 hardware overlay plus inbuilt YUV to RGB conversion functionality.开发者_如何学Python They have exposed these functionality through v4l2 driver. v4l2
According to the list of API changes in the 2.6 kernel series on LWN the .owner field of struct proc_dir_entry was removed in the 2.6.30 Kernel.
I am writing a kernel module and need to perform reads from an existing block device. (/dev/something).
I compiled and ran the chardev.c example from the lkmpg and when writing to the device received an unexpected error开发者_StackOverflow:
I\'m building a an \'external\' module ( devic开发者_运维百科e driver ), i.e. it\'s not in the Linux kernel source tree, but in a separate unrelated source tree.
I was trying to compile the linux kernel, but getting some errors. While running the top Makefile i am getting the following errors :-
I\'m writing a Linux filesystem driver, and found this code in a tutorial. From there, I came across this modified version of the previous code, which makes it compile on 3.x kernels. However it seems
I am cross compiling kernel module using my own generated toolchain of yocto kirkston source but it\'s throwing error that "/bin/sh: 1: scripts/mod/modpost: not found". I could see modpost.c
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