On Tue, May 23, 2017 at 12:58:07PM +0530, Madhu K wrote:
Hi Greg,
Thanks for your response.
On Tue, May 23, 2017 at 12:04 PM, Greg KH <greg@kroah.com> wrote:
On Tue, May 23, 2017 at 11:58:31AM +0530, Madhu K wrote: > Hi All, > > why there is no character device entry present in /sys/class? where as block > and net device entries are present.
I see character devices there, but not the device nodes. I don't see block device nodes there either.
If I am wrong please correct me, there is a folder called block in /sys/class. is block not containing block device nodes?
Nope, look closer :)
> Not only in /sys/class, for that matter why there is no character device > entries present in /sys file system.
What do you exactly mean by "character device entries"?
like block and net why there is no char folder
Again, look closer please.
> please help me to understand for what purpose char devices are kept away from / > sys file system.
Have you read the driver model chapter in the Linux Device drivers book, or the in-kernel sysfs documentation?
Again, please read all of the copious documentation that we have written already about this topic. If after that, you still have questions, I will be more than glad to help answer them. thanks, greg k-h