-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On Wed, Jul 18, 2007 at 04:14:36PM +0200, [EMAIL PROTECTED] wrote: > Erik Mouw wrote: >> When two or more devices share an IRQ line, the kernel calls the first >> ISR for that line. When the first IRQ returns IRQ_HANDLED, the kernel >> won't call the ISR for the second device until one ISR returns >> IRQ_HANDLED. > > I'm not quite sure I understand this. I had the impression that if (with > shared interrupt lines) one interrupt routine exits with IRQ_HANDLED > interrupt is considered handled by the kernel (set aside the procedure to > disable the interrupt in the device itself). Only when certain interrupt > routine returns IRQ_NONE another interrupt routine can then try to service > the same pending interrupt!?!?
That's exactly what I meant, but you put it in a better way :) 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) iD8DBQFGnnW9/PlVHJtIto0RAjSQAJ45Deedg/YET+2Yie7mXGPOsGUJQQCfebtq ue9cbfmmxeD9r/SBQPtmq80= =5CkJ -----END PGP SIGNATURE----- -- To unsubscribe from this list: send an email with "unsubscribe kernelnewbies" to [EMAIL PROTECTED] Please read the FAQ at http://kernelnewbies.org/FAQ
