From 9da36a7ec42135428e1d41621e3703429bda3b2e Mon Sep 17 00:00:00 2001
From: Parshuram Thombare <pthombar@cadence.com>
Date: Thu, 21 May 2020 11:32:22 +0200
Subject: [PATCH] i3c: master add i3c_master_attach_boardinfo to preserve boardinfo
Git-commit: 9da36a7ec42135428e1d41621e3703429bda3b2e
Patch-mainline: v5.10-rc1
References: git-fixes

Boardinfo was lost if I3C object for devices with boardinfo
available are not created or not added to the I3C device list
because of some failure e.g. SETDASA failed, retrieve info failed etc
This patch adds i3c_master_attach_boardinfo which scan boardinfo list
in the master object and 'attach' it to the I3C device object.

Fixes: 3a379bbcea0a ("i3c: Add core I3C infrastructure")
Signed-off-by: Parshuram Thombare <pthombar@cadence.com>
Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com>
Link: https://lore.kernel.org/linux-i3c/1590053542-389-1-git-send-email-pthombar@cadence.com
Acked-by: Takashi Iwai <tiwai@suse.de>

---
 drivers/i3c/master.c | 19 +++++++++++++++++--
 1 file changed, 17 insertions(+), 2 deletions(-)

diff --git a/drivers/i3c/master.c b/drivers/i3c/master.c
index 97f2e29265da..cc7564446ccd 100644
--- a/drivers/i3c/master.c
+++ b/drivers/i3c/master.c
@@ -1782,6 +1782,21 @@ static void i3c_master_bus_cleanup(struct i3c_master_controller *master)
 	i3c_master_detach_free_devs(master);
 }
 
+static void i3c_master_attach_boardinfo(struct i3c_dev_desc *i3cdev)
+{
+	struct i3c_master_controller *master = i3cdev->common.master;
+	struct i3c_dev_boardinfo *i3cboardinfo;
+
+	list_for_each_entry(i3cboardinfo, &master->boardinfo.i3c, node) {
+		if (i3cdev->info.pid != i3cboardinfo->pid)
+			continue;
+
+		i3cdev->boardinfo = i3cboardinfo;
+		i3cdev->info.static_addr = i3cboardinfo->static_addr;
+		return;
+	}
+}
+
 static struct i3c_dev_desc *
 i3c_master_search_i3c_dev_duplicate(struct i3c_dev_desc *refdev)
 {
@@ -1837,10 +1852,10 @@ int i3c_master_add_i3c_dev_locked(struct i3c_master_controller *master,
 	if (ret)
 		goto err_detach_dev;
 
+	i3c_master_attach_boardinfo(newdev);
+
 	olddev = i3c_master_search_i3c_dev_duplicate(newdev);
 	if (olddev) {
-		newdev->boardinfo = olddev->boardinfo;
-		newdev->info.static_addr = olddev->info.static_addr;
 		newdev->dev = olddev->dev;
 		if (newdev->dev)
 			newdev->dev->desc = newdev;
-- 
2.16.4