-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On Tue, Jul 17, 2007 at 05:47:09PM +0530, Rajendra Stalekar wrote: > From: Erik Mouw [mailto:mouw@xxxxxxxxxxxx] >> On Tue, Jul 17, 2007 at 05:26:44PM +0530, Rajendra Stalekar wrote: >> > 1. Why is it not correct to install the interrupt handler during driver >> > initialization and it's better to install it when we are actually opening >> > the device. >> >> Because you would be servicing interrupts for an unused device. That >> wastes: >> - CPU time >> - Memory resources >> - Energy (important for laptop users) > > Rajendra :- When we are not using the device itself(i.e. not opened the > device) , what kind of interrupts can we get for that device? Depends on the device and the driver. For a ethernet device you could receive interrupts for broadcast packets, for example. Erik - -- They're all fools. Don't worry. Darwin may be slow, but he'll eventually get them. -- Matthew Lammers in alt.sysadmin.recovery -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.6 (GNU/Linux) iD8DBQFGnLcN/PlVHJtIto0RAoh1AJ9LbSsQ1bnX5hhddQEQCzFbvyFOFwCfR0EE eE3ExwyDFSokztlgKjcRW+8= =FFW1 -----END PGP SIGNATURE----- -- To unsubscribe from this list: send an email with "unsubscribe kernelnewbies" to ecartis@xxxxxxxxxxxx Please read the FAQ at http://kernelnewbies.org/FAQ
