diff options
| author | Rusty Russell <rusty@rustcorp.com.au> | 2007-07-26 10:41:03 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-07-26 11:35:17 -0700 |
| commit | e2c9784325490c878b7f69aeec1bed98b288bd97 (patch) | |
| tree | d474007607c713a30db818107ca0581269f059a2 /include/linux/lguest_bus.h | |
| parent | b2b47c214f4e85ce3968120d42e8b18eccb4f4e3 (diff) | |
lguest: documentation III: Drivers
Documentation: The Drivers
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux/lguest_bus.h')
| -rw-r--r-- | include/linux/lguest_bus.h | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/include/linux/lguest_bus.h b/include/linux/lguest_bus.h index c9b4e05fee4..d27853ddc64 100644 --- a/include/linux/lguest_bus.h +++ b/include/linux/lguest_bus.h @@ -15,11 +15,14 @@ struct lguest_device { void *private; }; -/* By convention, each device can use irq index+1 if it wants to. */ +/*D:380 Since interrupt numbers are arbitrary, we use a convention: each device + * can use the interrupt number corresponding to its index. The +1 is because + * interrupt 0 is not usable (it's actually the timer interrupt). */ static inline int lgdev_irq(const struct lguest_device *dev) { return dev->index + 1; } +/*:*/ /* dma args must not be vmalloced! */ void lguest_send_dma(unsigned long key, struct lguest_dma *dma); |