lkml.org 
[lkml]   [2008]   [Jul]   [11]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH] uio: uio_pdrv_genirq V3
Magnus Damm wrote:
> - kept irq control spinlock to serialize user space access
I think you want to assert, that after a succeeded

echo 0 > /dev/uioX

the userspace doesn't need to check for a pending irq?! What happens if
the irq triggers before you take the lock?

Best regards
Uwe

--
Uwe Kleine-König, Software Engineer
Digi International GmbH Branch Breisach, Küferstrasse 8, 79206 Breisach, Germany
Tax: 315/5781/0242 / VAT: DE153662976 / Reg. Amtsgericht Dortmund HRB 13962
--
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: 2008-07-11 12:21    [W:0.035 / U:0.636 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site