Staging: hv: Move the definition of the function get_stor_device()
In preparation for further cleaning up storvsc.c move the definition
of the inline function get_stor_device() from storvsc.c to
storvsc_api.h.
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Hank Janssen <hjanssen@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/drivers/staging/hv/storvsc_api.h b/drivers/staging/hv/storvsc_api.h
index d985bbf..4e66507 100644
--- a/drivers/staging/hv/storvsc_api.h
+++ b/drivers/staging/hv/storvsc_api.h
@@ -137,6 +137,21 @@
struct storvsc_request_extension reset_request;
};
+
+/* Get the stordevice object iff exists and its refcount > 1 */
+static inline struct storvsc_device *get_stor_device(struct hv_device *device)
+{
+ struct storvsc_device *stor_device;
+
+ stor_device = (struct storvsc_device *)device->ext;
+ if (stor_device && atomic_read(&stor_device->ref_count) > 1)
+ atomic_inc(&stor_device->ref_count);
+ else
+ stor_device = NULL;
+
+ return stor_device;
+}
+
/* Interface */
int stor_vsc_on_host_reset(struct hv_device *device);