lkml.org 
[lkml]   [2001]   [Jun]   [21]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: Is it useful to support user level drivers
On Thu, 21 Jun 2001, Oliver Neukum wrote:

> > Lastly an IRQ kernel module can disable_irq() from interrupt handler
> > and enable it again only on explicit acknowledge from user.
>
> Unless you need that interrupt to be enabled to deliver the signal or let

Need not. Signal and other event delivery mechanisms has nothing
common with disable/enable_irq().

> userspace reenable the interrupt.

"user acknowledge" is mean that.


> In addition, how do you handle shared interrupts ?

It is impossible, see my another message.

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-03-22 12:55    [W:0.111 / U:27.052 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site