diff options
| author | Ian Campbell <ian.campbell@citrix.com> | 2011-03-10 16:08:04 +0000 |
|---|---|---|
| committer | Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> | 2011-03-10 14:48:33 -0500 |
| commit | 653378acdd477a299f468e396c7719911ac57881 (patch) | |
| tree | 1a0840e9fb0eaef25fd4b16fedef49445cf9186e | |
| parent | be49472f0460455e8e0d9e6593837e09cbcc9ad7 (diff) | |
xen: events: simplify comment
It is never valid assume any particular relationship between a Xen
PIRQ number and and Linux IRQ number so there is no need to hedge when
saying so.
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
| -rw-r--r-- | drivers/xen/events.c | 10 | ||||
| -rw-r--r-- | include/xen/events.h | 4 |
2 files changed, 4 insertions, 10 deletions
diff --git a/drivers/xen/events.c b/drivers/xen/events.c index 684b0950538..0b27080b191 100644 --- a/drivers/xen/events.c +++ b/drivers/xen/events.c @@ -583,13 +583,9 @@ int xen_allocate_pirq(unsigned gsi, int shareable, char *name) return xen_map_pirq_gsi(gsi, gsi, shareable, name); } -/* xen_map_pirq_gsi might allocate irqs from the top down, as a - * consequence don't assume that the irq number returned has a low value - * or can be used as a pirq number unless you know otherwise. - * - * One notable exception is when xen_map_pirq_gsi is called passing an - * hardware gsi as argument, in that case the irq number returned - * matches the gsi number passed as second argument. +/* + * Do not make any assumptions regarding the relationship between the + * IRQ number returned here and the Xen pirq argument. * * 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. diff --git a/include/xen/events.h b/include/xen/events.h index 962da2ced5b..f6fed9498aa 100644 --- a/include/xen/events.h +++ b/include/xen/events.h @@ -68,9 +68,7 @@ int xen_set_callback_via(uint64_t via); void xen_evtchn_do_upcall(struct pt_regs *regs); void xen_hvm_evtchn_do_upcall(void); -/* Allocate an irq for a physical interrupt, given a gsi. "Legacy" - * GSIs are identity mapped; others are dynamically allocated as - * usual. */ +/* Allocate an irq for a physical interrupt, given a gsi. */ int xen_allocate_pirq(unsigned gsi, int shareable, char *name); int xen_map_pirq_gsi(unsigned pirq, unsigned gsi, int shareable, char *name); |