In Process cotext you can hold spin_lock and also you can up().. And its better to use spin_lock_irqsave intead of spin_lock in process context..
Naveed Latif
On 2/8/06,
Hareesh Nagarajan <hareesh.nagarajan@xxxxxxxxx> wrote:
Hi:
In process context (and interrupt context, while we are at it) can we
hold a spin lock and call up() (on a semaphore)? Apart from the usual
issues pertaining with deadlocks - are we guaranteed that an up is a
non-blocking operation?
Thanks,
Hareesh
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