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Reimplemented atomic destructive read. Revised irq control capabilities.

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This commit is contained in:
Bahadir Balban
2009-12-13 18:49:35 +02:00
parent c7069a8e8e
commit 0c4bd69357
3 changed files with 17 additions and 22 deletions
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16
src/generic/capability.c
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@@ -726,6 +726,10 @@ struct capability *cap_match_irqctrl(struct capability *cap,
if (!(cap->access & CAP_IRQCTRL_REGISTER))
return 0;
break;
case IRQ_CONTROL_WAIT:
if (!(cap->access & CAP_IRQCTRL_WAIT))
return 0;
break;
default:
/* We refuse to accept anything else */
return 0;
@@ -892,13 +896,13 @@ int cap_irq_check(struct ktcb *registrant, unsigned int req,
return -ENOCAP;
/*
* Find the device capability and
* check that it allows irq registration
* If it is an irq registration, find the device
* capability and check that it allows irq registration.
*/
if (!cap_find(current, cap_match_devmem,
&args, CAP_TYPE_MAP_PHYSMEM))
return -ENOCAP;
if (req == IRQ_CONTROL_REGISTER)
if (!cap_find(current, cap_match_devmem,
&args, CAP_TYPE_MAP_PHYSMEM))
return -ENOCAP;
return 0;
}