[PATCH linux dev-4.10 v2 3/3] fsi: core: Add check for master property no-scan-on-init

[Christopher Bostic]

Prior to scanning a master check if the optional property
no-scan-on-init is present.  If it is then avoid scanning.  This is
necessary in cases where a master scan could interfere with another
FSI master on the same bus.

Signed-off-by: Christopher Bostic <cbostic at linux.vnet.ibm.com>
---
v2 - Remove changes in hub and gpio masters and make check for device
     tree property in the core itself.
---
 drivers/fsi/fsi-core.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/fsi/fsi-core.c b/drivers/fsi/fsi-core.c
index 9b83f1a..7b06b0d 100644
--- a/drivers/fsi/fsi-core.c
+++ b/drivers/fsi/fsi-core.c
@@ -900,6 +900,7 @@ static ssize_t master_break_store(struct device *dev,
 int fsi_master_register(struct fsi_master *master)
 {
 	int rc;
+	struct device_node *np;
 
 	if (!master)
 		return -EINVAL;
@@ -927,7 +928,9 @@ int fsi_master_register(struct fsi_master *master)
 		return rc;
 	}
 
-	fsi_master_scan(master);
+	np = dev_of_node(&master->dev);
+	if (!of_property_read_bool(np, "no-scan-on-init"))
+		fsi_master_scan(master);
 
 	return 0;
 }
-- 
1.8.2.2