wait queue sharing..

wait queue sharing..

[Mohan]

Hello All,

I have a question regarding the wait queues. I have a driver
pxausb_core.o which is the core driver which does all USB endpoint
handling and hardware interaction. I have one more driver on top of it
usb-serial which provides for the user-level interaction(like read,
write, ioctl).
I have implemented a blocking ioctl, which sends events about the state
of USB device(enumerated, suspended, disconnected, etc).
For this ioctl, i have declared a wait_queue and initialized (using
init_waitqueue_head() func.) in the usb_ctl.c which is part of
pxausb_core.o. (it has usb_send.c, usb_recv.c, usb_ctl.c, usb_ep0.c).
I am using that wait_queue variable in usb-ser.c.

I just wanted to clarify myself whether the wait queues can be shared
between two driver modules.

Thank you...
regards,
mohan

Re: wait queue sharing..

[Kedar Sovani]

Yes, technically, you can share the wait queue between two modules.
Ofcourse, provided you can manage to initialise it before any use.

Kedar.

On Fri, 11 Mar 2005 17:11:18 +0530, Mohan <mohanv@aftek.com> wrote:
> Hello All,
> 
> I have a question regarding the wait queues. I have a driver
> pxausb_core.o which is the core driver which does all USB endpoint
> handling and hardware interaction. I have one more driver on top of it
> usb-serial which provides for the user-level interaction(like read,
> write, ioctl).
> I have implemented a blocking ioctl, which sends events about the state
> of USB device(enumerated, suspended, disconnected, etc).
> For this ioctl, i have declared a wait_queue and initialized (using
> init_waitqueue_head() func.) in the usb_ctl.c which is part of
> pxausb_core.o. (it has usb_send.c, usb_recv.c, usb_ctl.c, usb_ep0.c).
> I am using that wait_queue variable in usb-ser.c.
> 
> I just wanted to clarify myself whether the wait queues can be shared
> between two driver modules.
> 
> Thank you...
> regards,
> mohan