Commit f3aa2c6f authored Feb 12, 2018 by Christopher Bostic Committed by Greg Kroah-Hartman Mar 14, 2018

fsi: core: Add check for master property no-scan-on-init



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@linux.vnet.ibm.com>
Acked-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Joel Stanley <joel@jms.id.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

parent dd798739

drivers/fsi/fsi-core.c

+4 −1

Original line number	Diff line number	Diff line
		@@ -901,6 +901,7 @@ static DEVICE_ATTR(break, 0200, NULL, master_break_store);
		int fsi_master_register(struct fsi_master *master)
		{
		int rc;
		struct device_node *np;

		if (!master)
		return -EINVAL;
		@@ -928,6 +929,8 @@ int fsi_master_register(struct fsi_master *master)
		return rc;
		}

		np = dev_of_node(&master->dev);
		if (!of_property_read_bool(np, "no-scan-on-init"))
		fsi_master_scan(master);

		return 0;

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