firewire: Move fw_card kref functions into linux/firewire.h

When writing a firewire driver that doesn't deal with struct fw_device
objects (e.g. it only publishes FireWire units and doesn't subscribe to
them), you likely need to keep referenced to struct fw_card objects so
that you can send messages to other nodes. This patch moves
fw_card_put(), fw_card_get() and fw_card_release() into the public
include/linux/firewire.h header instead of drivers/firewire/core.h, and
adds EXPORT_SYMBOL_GPL(fw_card_release).

The firewire-sbp-target module requires these so it can keep a reference
to the fw_card object in order that it can fetch ORBs to execute and
read/write related data and status information.

Signed-off-by: Chris Boot <bootc@bootc.net>
Acked-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Cc: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>

3 files changed, 15 insertions, 15 deletions

diff --git a/drivers/firewire/core-card.c b/drivers/firewire/core-card.c
index cc595eba7ba9..f5552b362efc 100644
--- a/drivers/firewire/core-card.c
+++ b/drivers/firewire/core-card.c
@@ -676,6 +676,7 @@ void fw_card_release(struct kref *kref)
 
         complete(&card->done);
 }
+EXPORT_SYMBOL_GPL(fw_card_release);
 
 void fw_core_remove_card(struct fw_card *card)
 {
diff --git a/drivers/firewire/core.h b/drivers/firewire/core.h
index 9047f5547d98..b5a2f6197053 100644
--- a/drivers/firewire/core.h
+++ b/drivers/firewire/core.h
@@ -120,21 +120,6 @@ int fw_compute_block_crc(__be32 *block);
 void fw_schedule_bus_reset(struct fw_card *card, bool delayed, bool short_reset);
 void fw_schedule_bm_work(struct fw_card *card, unsigned long delay);
 
-static inline struct fw_card *fw_card_get(struct fw_card *card)
-{
-        kref_get(&card->kref);
-
-        return card;
-}
-
-void fw_card_release(struct kref *kref);
-
-static inline void fw_card_put(struct fw_card *card)
-{
-        kref_put(&card->kref, fw_card_release);
-}
-
-
 /* -cdev */
 
 extern const struct file_operations fw_device_ops;
diff --git a/include/linux/firewire.h b/include/linux/firewire.h
index 46831303b0b9..e83c24af358a 100644
--- a/include/linux/firewire.h
+++ b/include/linux/firewire.h
@@ -135,6 +135,20 @@ struct fw_card {
         __be32 maint_utility_register;
 };
 
+static inline struct fw_card *fw_card_get(struct fw_card *card)
+{
+        kref_get(&card->kref);
+
+        return card;
+}
+
+void fw_card_release(struct kref *kref);
+
+static inline void fw_card_put(struct fw_card *card)
+{
+        kref_put(&card->kref, fw_card_release);
+}
+
 struct fw_attribute_group {
         struct attribute_group *groups[2];
         struct attribute_group group;