hi all,
in my driver i need to provide synchronous read/write
operations to the application. moreover, operation
cancellation is also needed.
-what is the most recommended way to wait for
completion of an urb?
-i was planning to use a modified version of
usb_start_wait_urb() used inside usb_bulk
David Brownell wrote:
There's another wait/synchronize primitive that
I found at one point, I think the block layer
used it, which involved a bit less inlined code
and didn't necessarily require everything to be
interruptible. I lost track of it though.
Found it again, also in :
prepare_to_wait
Prageeth wrote:
hi all,
in my driver i need to provide synchronous read/write
operations to the application. moreover, operation
cancellation is also needed.
-what is the most recommended way to wait for
completion of an urb?
Submit using usb_submit_urb(), then if you don't need
operation cancel
hi,
thanks for all the replies.
-i call wait_for_completion() from my read/write entry
points
-in URB's completion handler, call complete()
-when cancellation needed, call usb_unlink_urb()
-the URB's completion handler gets called with err
code on cancellation
-thus, cancellation also uses the s
Am Freitag, 8. August 2003 10:37 schrieb Prageeth:
> hi all,
>
> in my driver i need to provide synchronous read/write
> operations to the application. moreover, operation
> cancellation is also needed.
>
> -what is the most recommended way to wait for
> completion of an urb?
Use a struct compl
