[PATCH v2 13/18] drivers/fsi: Remove all scanned devices during master unregister
From: christopher.lee.bostic at gmail.com <hidden>
Date: 2017-01-12 22:34:18
Also in:
linux-devicetree, lkml
Subsystem:
fsi subsystem, the rest · Maintainers:
Eddie James, Linus Torvalds
From: Chris Bostic <redacted>
Master will remove all previously scanned devices during an
unregister operation. This will be necessary should any master
attempt to register more than once.
Signed-off-by: Chris Bostic <redacted>
---
V2 - Remove list heads and explicit master device list management
int the fsi master and fsi slave structs. Instead utilize the
device_for_each_child method already available.
---
drivers/fsi/fsi-core.c | 14 ++++++++++++++
1 file changed, 14 insertions(+)
diff --git a/drivers/fsi/fsi-core.c b/drivers/fsi/fsi-core.c
index af7965f..28b82d1 100644
--- a/drivers/fsi/fsi-core.c
+++ b/drivers/fsi/fsi-core.c@@ -428,12 +428,26 @@ int fsi_master_register(struct fsi_master *master) } EXPORT_SYMBOL_GPL(fsi_master_register); +static int fsi_slave_device_remove(struct device *dev, void *data) +{ + put_device(dev); + return 0; +} + +static int fsi_master_slave_remove(struct device *dev, void *data) +{ + device_for_each_child(dev, NULL, fsi_slave_device_remove); + device_unregister(dev); + return 0; +} + void fsi_master_unregister(struct fsi_master *master) { if (!master || !master->dev) return; ida_simple_remove(&master_ida, master->idx); + device_for_each_child(master->dev, NULL, fsi_master_slave_remove); put_device(master->dev); } EXPORT_SYMBOL_GPL(fsi_master_unregister);
--
1.8.2.2