[v4,1/6] i3c: master: make sure ->boardinfo is initialized in add_i3c_dev_locked()
diff mbox series

Message ID 20191210101502.8401-2-pgaj@cadence.com
State New
Headers show
Series
  • I3C device addresing adjustments
Related show

Commit Message

Przemysław Gaj Dec. 10, 2019, 10:14 a.m. UTC
From: Vitor Soares <vitor.soares@synopsys.com>

The newdev->boardinfo assignment was missing in
i3c_master_add_i3c_dev_locked() and hence the ->of_node info isn't
propagated to i3c_dev_desc.

Fix this by trying to initialize device i3c_dev_boardinfo if available.

Cc: <stable@vger.kernel.org>
Fixes: 3a379bbcea0a ("i3c: Add core I3C infrastructure")
Signed-off-by: Vitor Soares <vitor.soares@synopsys.com>
Signed-off-by: Przemyslaw Gaj <pgaj@cadence.com>
---
Change in v4:
  - Remove addrstatus check, this will be sent as a separate patch

Change in v3:
  - None

Changes in v2:
  - Change commit message
  - Change i3c_master_search_i3c_boardinfo(newdev) to i3c_master_init_i3c_dev_boardinfo(newdev)
  - Add fixes, stable tags
---
 drivers/i3c/master.c | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)
 mode change 100644 => 100755 drivers/i3c/master.c

Patch
diff mbox series

diff --git a/drivers/i3c/master.c b/drivers/i3c/master.c
index 043691656245..5c06c41e6660
--- a/drivers/i3c/master.c
+++ b/drivers/i3c/master.c
@@ -1774,6 +1774,22 @@  i3c_master_search_i3c_dev_duplicate(struct i3c_dev_desc *refdev)
 	return NULL;
 }
 
+static void i3c_master_init_i3c_dev_boardinfo(struct i3c_dev_desc *dev)
+{
+	struct i3c_master_controller *master = i3c_dev_get_master(dev);
+	struct i3c_dev_boardinfo *boardinfo;
+
+	if (dev->boardinfo)
+		return;
+
+	list_for_each_entry(boardinfo, &master->boardinfo.i3c, node) {
+		if (dev->info.pid == boardinfo->pid) {
+			dev->boardinfo = boardinfo;
+			return;
+		}
+	}
+}
+
 /**
  * i3c_master_add_i3c_dev_locked() - add an I3C slave to the bus
  * @master: master used to send frames on the bus
@@ -1854,6 +1870,8 @@  int i3c_master_add_i3c_dev_locked(struct i3c_master_controller *master,
 	if (ret)
 		goto err_detach_dev;
 
+	i3c_master_init_i3c_dev_boardinfo(newdev);
+
 	/*
 	 * Depending on our previous state, the expected dynamic address might
 	 * differ: