linux-kernel - [PATCH 3/5] firewire: core: add helper function to detect data of iso resource structure

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Message-ID: <20240812235210.28458-4-o-takashi@sakamocchi.jp>
Date: Tue, 13 Aug 2024 08:52:08 +0900
From: Takashi Sakamoto <o-takashi@...amocchi.jp>
To: linux1394-devel@...ts.sourceforge.net
Cc: linux-kernel@...r.kernel.org
Subject: [PATCH 3/5] firewire: core: add helper function to detect data of iso resource structure

It depends on the function assigned to release member to identify
resource structure.

This commit adds a helper function to identify iso_resource structure.

Signed-off-by: Takashi Sakamoto <o-takashi@...amocchi.jp>
---
 drivers/firewire/core-cdev.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/firewire/core-cdev.c b/drivers/firewire/core-cdev.c
index e72f91cc3711..6fe2a2ea9869 100644
--- a/drivers/firewire/core-cdev.c
+++ b/drivers/firewire/core-cdev.c
@@ -161,6 +161,11 @@ static struct iso_resource *to_iso_resource(struct client_resource *resource)
 
 static void release_iso_resource(struct client *, struct client_resource *);
 
+static int is_iso_resource(const struct client_resource *resource)
+{
+	return resource->release == release_iso_resource;
+}
+
 static void schedule_iso_resource(struct iso_resource *r, unsigned long delay)
 {
 	client_get(r->client);
@@ -170,7 +175,7 @@ static void schedule_iso_resource(struct iso_resource *r, unsigned long delay)
 
 static void schedule_if_iso_resource(struct client_resource *resource)
 {
-	if (resource->release == release_iso_resource)
+	if (is_iso_resource(resource))
 		schedule_iso_resource(to_iso_resource(resource), 0);
 }
 
-- 
2.43.0