workqueue: skip the node_nr_active update for non-unbound workqueuesgrafted

apply_wqattrs_commit() updates node_nr_active->max unconditionally.
wq->node_nr_active[] is only allocated for unbound workqueues, so guard
the call before per-cpu workqueues start using this path.

No functional change: only unbound workqueues reach apply_wqattrs_*()
today.

Signed-off-by: Breno Leitao <leitao@debian.org>
Signed-off-by: Tejun Heo <tj@kernel.org>

1 files changed, 69 insertions, 0 deletions

diff --git a/include/media/videobuf2-dvb.h b/include/media/videobuf2-dvb.h
new file mode 100644
index 000000000..2d577b945
--- /dev/null
+++ b/include/media/videobuf2-dvb.h
@@ -0,0 +1,69 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _VIDEOBUF2_DVB_H_
+#define	_VIDEOBUF2_DVB_H_
+
+#include <media/dvbdev.h>
+#include <media/dmxdev.h>
+#include <media/dvb_demux.h>
+#include <media/dvb_net.h>
+#include <media/dvb_frontend.h>
+#include <media/videobuf2-v4l2.h>
+
+/* We don't actually need to include media-device.h here */
+struct media_device;
+
+/*
+ * TODO: This header file should be replaced with videobuf2-core.h
+ * Currently, vb2_thread is not a stuff of videobuf2-core,
+ * since vb2_thread has many dependencies on videobuf2-v4l2.
+ */
+
+struct vb2_dvb {
+	/* filling that the job of the driver */
+	char			*name;
+	struct dvb_frontend	*frontend;
+	struct vb2_queue	dvbq;
+
+	/* vb2-dvb state info */
+	struct mutex		lock;
+	int			nfeeds;
+
+	/* vb2_dvb_(un)register manages this */
+	struct dvb_demux	demux;
+	struct dmxdev		dmxdev;
+	struct dmx_frontend	fe_hw;
+	struct dmx_frontend	fe_mem;
+	struct dvb_net		net;
+};
+
+struct vb2_dvb_frontend {
+	struct list_head felist;
+	int id;
+	struct vb2_dvb dvb;
+};
+
+struct vb2_dvb_frontends {
+	struct list_head felist;
+	struct mutex lock;
+	struct dvb_adapter adapter;
+	int active_fe_id; /* Indicates which frontend in the felist is in use */
+	int gate; /* Frontend with gate control 0=!MFE,1=fe0,2=fe1 etc */
+};
+
+int vb2_dvb_register_bus(struct vb2_dvb_frontends *f,
+			 struct module *module,
+			 void *adapter_priv,
+			 struct device *device,
+			 struct media_device *mdev,
+			 short *adapter_nr,
+			 int mfe_shared);
+
+void vb2_dvb_unregister_bus(struct vb2_dvb_frontends *f);
+
+struct vb2_dvb_frontend *vb2_dvb_alloc_frontend(struct vb2_dvb_frontends *f, int id);
+void vb2_dvb_dealloc_frontends(struct vb2_dvb_frontends *f);
+
+struct vb2_dvb_frontend *vb2_dvb_get_frontend(struct vb2_dvb_frontends *f, int id);
+int vb2_dvb_find_frontend(struct vb2_dvb_frontends *f, struct dvb_frontend *p);
+
+#endif			/* _VIDEOBUF2_DVB_H_ */