On 16.10.23 09:28, Juergen Gross wrote:
Hello Juergen
Instead of having a common function for allocating a single IRQ or a
consecutive number of IRQs, split up the functionality into the callers
of xen_allocate_irqs_dynamic().
This allows to handle any allocation error in xen_irq_init() gracefully
instead of panicing the system. Let xen_irq_init() return the irq_info
pointer or NULL in case of an allocation error.
Additionally set the IRQ into irq_info already at allocation time, as
otherwise the IRQ would be '0' (which is a valid IRQ number) until
being set.
Signed-off-by: Juergen Gross <jgross@xxxxxxxx>
---
drivers/xen/events/events_base.c | 74 +++++++++++++++++++-------------
1 file changed, 44 insertions(+), 30 deletions(-)
[snip]
@@ -1725,6 +1738,7 @@ void rebind_evtchn_irq(evtchn_port_t evtchn, int irq)
so there should be a proper type */
BUG_ON(info->type == IRQT_UNBOUND);
+ info->irq = irq;
I failed to understand why this is added here. Doesn't irq remain the
same, and info->irq remains valid? Could you please clarify.
Other changes lgtm.
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