xen: Use evtchn_type_t as a type for event channels
Make event channel functions pass event channel port using
evtchn_port_t type. It eliminates signed <-> unsigned conversion.
Signed-off-by: Yan Yankovskyi <yyankovskyi@gmail.com>
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Link: https://lore.kernel.org/r/20200323152343.GA28422@kbp1-lhp-F74019
Signed-off-by: Juergen Gross <jgross@suse.com>
diff --git a/drivers/xen/evtchn.c b/drivers/xen/evtchn.c
index 052b55a..6e0b1dd 100644
--- a/drivers/xen/evtchn.c
+++ b/drivers/xen/evtchn.c
@@ -83,7 +83,7 @@ struct per_user_data {
struct user_evtchn {
struct rb_node node;
struct per_user_data *user;
- unsigned port;
+ evtchn_port_t port;
bool enabled;
};
@@ -138,7 +138,8 @@ static void del_evtchn(struct per_user_data *u, struct user_evtchn *evtchn)
kfree(evtchn);
}
-static struct user_evtchn *find_evtchn(struct per_user_data *u, unsigned port)
+static struct user_evtchn *find_evtchn(struct per_user_data *u,
+ evtchn_port_t port)
{
struct rb_node *node = u->evtchns.rb_node;
@@ -163,7 +164,7 @@ static irqreturn_t evtchn_interrupt(int irq, void *data)
struct per_user_data *u = evtchn->user;
WARN(!evtchn->enabled,
- "Interrupt for port %d, but apparently not enabled; per-user %p\n",
+ "Interrupt for port %u, but apparently not enabled; per-user %p\n",
evtchn->port, u);
disable_irq_nosync(irq);
@@ -286,7 +287,7 @@ static ssize_t evtchn_write(struct file *file, const char __user *buf,
mutex_lock(&u->bind_mutex);
for (i = 0; i < (count/sizeof(evtchn_port_t)); i++) {
- unsigned port = kbuf[i];
+ evtchn_port_t port = kbuf[i];
struct user_evtchn *evtchn;
evtchn = find_evtchn(u, port);
@@ -361,7 +362,7 @@ static int evtchn_resize_ring(struct per_user_data *u)
return 0;
}
-static int evtchn_bind_to_user(struct per_user_data *u, int port)
+static int evtchn_bind_to_user(struct per_user_data *u, evtchn_port_t port)
{
struct user_evtchn *evtchn;
struct evtchn_close close;
@@ -423,7 +424,7 @@ static void evtchn_unbind_from_user(struct per_user_data *u,
static DEFINE_PER_CPU(int, bind_last_selected_cpu);
-static void evtchn_bind_interdom_next_vcpu(int evtchn)
+static void evtchn_bind_interdom_next_vcpu(evtchn_port_t evtchn)
{
unsigned int selected_cpu, irq;
struct irq_desc *desc;