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xen/evtchn: use rb_entry() 

To make the code clearer, use rb_entry() instead of container_of() to
deal with rbtree.

Signed-off-by: Geliang Tang <geliangtang@gmail.com>
Reviewed-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Juergen Gross <jgross@suse.com>
This commit is contained in:
Geliang Tang 2016-12-20 22:02:20 +08:00 committed by Juergen Gross
parent 7ecec8503a
commit 2f60b28831
1 changed files with 2 additions and 2 deletions
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4
drivers/xen/evtchn.c
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@ -125,7 +125,7 @@ static int add_evtchn(struct per_user_data *u, struct user_evtchn *evtchn)
while (*new) { while (*new) {
struct user_evtchn *this; struct user_evtchn *this;
this = container_of(*new, struct user_evtchn, node); this = rb_entry(*new, struct user_evtchn, node);
parent = *new; parent = *new;
if (this->port < evtchn->port) if (this->port < evtchn->port)
@ -157,7 +157,7 @@ static struct user_evtchn *find_evtchn(struct per_user_data *u, unsigned port)
while (node) { while (node) {
struct user_evtchn *evtchn; struct user_evtchn *evtchn;
evtchn = container_of(node, struct user_evtchn, node); evtchn = rb_entry(node, struct user_evtchn, node);
if (evtchn->port < port) if (evtchn->port < port)
node = node->rb_left; node = node->rb_left;