* usability of device nodes with devfs
@ 2003-07-16 14:42 Oliver Neukum
2003-07-17 16:01 ` Christoph Hellwig
0 siblings, 1 reply; 2+ messages in thread
From: Oliver Neukum @ 2003-07-16 14:42 UTC (permalink / raw)
To: linux-kernel
Hi,
is it a requirement that nodes created with devfs can be opened
successfully from the moment the device is registered?
Regards
Oliver
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: usability of device nodes with devfs
2003-07-16 14:42 usability of device nodes with devfs Oliver Neukum
@ 2003-07-17 16:01 ` Christoph Hellwig
0 siblings, 0 replies; 2+ messages in thread
From: Christoph Hellwig @ 2003-07-17 16:01 UTC (permalink / raw)
To: Oliver Neukum; +Cc: linux-kernel
On Wed, Jul 16, 2003 at 04:42:05PM +0200, Oliver Neukum wrote:
> Hi,
>
> is it a requirement that nodes created with devfs can be opened
> successfully from the moment the device is registered?
For 2.4 which has a direct connection from devfs entries to file operations
this is indeed a requirement. For 2.5 devfs is merely a way to perform
mknod from kernelspace so there is no such requirement. Just still have
to be setup for I/O when calling register_chardev/add_disk, though.
^ permalink raw reply [flat|nested] 2+ messages in thread
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