diff options
| author | Tony Lindgren <tony@atomide.com> | 2011-06-14 05:53:42 -0700 |
|---|---|---|
| committer | Tony Lindgren <tony@atomide.com> | 2011-06-14 05:53:42 -0700 |
| commit | b8ce9fb8e18af7466e0b915bb5979322cdace322 (patch) | |
| tree | eec6f9b58ce154fd863f0f78b374a697a5a7139b /drivers/xen/events.c | |
| parent | c8e0bf95fc01d6e2ca585fe08010800b6c56e823 (diff) | |
| parent | e9e35c5a2b2c803b5e2f25906d8ffe110670ceb6 (diff) | |
Merge branch 'fixes-v3.0-rc3' into devel-fixes
Diffstat (limited to 'drivers/xen/events.c')
| -rw-r--r-- | drivers/xen/events.c | 18 |
1 files changed, 9 insertions, 9 deletions
diff --git a/drivers/xen/events.c b/drivers/xen/events.c index 3ff822b48145..553da68bd510 100644 --- a/drivers/xen/events.c +++ b/drivers/xen/events.c @@ -626,6 +626,9 @@ int xen_allocate_pirq_gsi(unsigned gsi) * * Note: We don't assign an event channel until the irq actually started * up. Return an existing irq if we've already got one for the gsi. + * + * Shareable implies level triggered, not shareable implies edge + * triggered here. */ int xen_bind_pirq_gsi_to_irq(unsigned gsi, unsigned pirq, int shareable, char *name) @@ -664,16 +667,13 @@ int xen_bind_pirq_gsi_to_irq(unsigned gsi, pirq_query_unmask(irq); /* We try to use the handler with the appropriate semantic for the - * type of interrupt: if the interrupt doesn't need an eoi - * (pirq_needs_eoi returns false), we treat it like an edge - * triggered interrupt so we use handle_edge_irq. - * As a matter of fact this only happens when the corresponding - * physical interrupt is edge triggered or an msi. + * type of interrupt: if the interrupt is an edge triggered + * interrupt we use handle_edge_irq. * - * On the other hand if the interrupt needs an eoi (pirq_needs_eoi - * returns true) we treat it like a level triggered interrupt so we - * use handle_fasteoi_irq like the native code does for this kind of + * On the other hand if the interrupt is level triggered we use + * handle_fasteoi_irq like the native code does for this kind of * interrupts. + * * Depending on the Xen version, pirq_needs_eoi might return true * not only for level triggered interrupts but for edge triggered * interrupts too. In any case Xen always honors the eoi mechanism, @@ -681,7 +681,7 @@ int xen_bind_pirq_gsi_to_irq(unsigned gsi, * hasn't received an eoi yet. Therefore using the fasteoi handler * is the right choice either way. */ - if (pirq_needs_eoi(irq)) + if (shareable) irq_set_chip_and_handler_name(irq, &xen_pirq_chip, handle_fasteoi_irq, name); else |