[Linux-parport] parport not automatically released by child
Eddy De Greef
degreef at imec.be
Thu Jan 15 09:32:02 GMT 2004
On 2004.01.14 15:06 Eddy De Greef wrote:
> on some older 2.4 kernels, I experience the following problem:
> when a process opens /dev/parport0 and then forks, and the child
> claims the port and exits without releasing it, the parent process
> can no longer claim the port. I would expect that the port is
> automatically released when the child exits.
> The most recent kernel on which I have seen this is 2.4.20.
> On a 2.4.22 kernel, everything seems to work fine.
> So my question is: is this really a bug in older kernels that has
> been fixed recently? Or is my assumption that the child process
> should release the port automatically wrong?
Correction: I made a mistake in my test on a 2.4.22 kernel.
The problem appears to occur with all kernel versions.
So the question is: is this a kernel bug or not?
More information about the Linux-parport