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authorJeremy Kerr <jk@ozlabs.org>2019-11-08 15:49:35 +1030
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2019-11-08 11:23:07 +0100
commit2e32c2d675ac19730ec656322414649f04eddaa8 (patch)
tree29812b93d4ea34e3282eade64c817f39b2e46b5b /drivers/fsi
parent4180468e16cd4e332027ab680bf5e31ca257e9dc (diff)
downloadlinux-2e32c2d675ac19730ec656322414649f04eddaa8.tar.bz2
fsi: Add fsi-master class
This change adds a device class for FSI masters, allowing access under /sys/class/fsi-master/, and easier udev rules. Signed-off-by: Jeremy Kerr <jk@ozlabs.org> Signed-off-by: Joel Stanley <joel@jms.id.au> Acked-by: Alistair Popple <alistair@popple.id.au> Link: https://lore.kernel.org/r/20191108051945.7109-2-joel@jms.id.au Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/fsi')
-rw-r--r--drivers/fsi/fsi-core.c13
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/fsi/fsi-core.c b/drivers/fsi/fsi-core.c
index 1f76740f33b6..0861f6097b33 100644
--- a/drivers/fsi/fsi-core.c
+++ b/drivers/fsi/fsi-core.c
@@ -1241,6 +1241,10 @@ static ssize_t master_break_store(struct device *dev,
static DEVICE_ATTR(break, 0200, NULL, master_break_store);
+struct class fsi_master_class = {
+ .name = "fsi-master",
+};
+
int fsi_master_register(struct fsi_master *master)
{
int rc;
@@ -1249,6 +1253,7 @@ int fsi_master_register(struct fsi_master *master)
mutex_init(&master->scan_lock);
master->idx = ida_simple_get(&master_ida, 0, INT_MAX, GFP_KERNEL);
dev_set_name(&master->dev, "fsi%d", master->idx);
+ master->dev.class = &fsi_master_class;
rc = device_register(&master->dev);
if (rc) {
@@ -1350,8 +1355,15 @@ static int __init fsi_init(void)
rc = bus_register(&fsi_bus_type);
if (rc)
goto fail_bus;
+
+ rc = class_register(&fsi_master_class);
+ if (rc)
+ goto fail_class;
+
return 0;
+ fail_class:
+ bus_unregister(&fsi_bus_type);
fail_bus:
unregister_chrdev_region(fsi_base_dev, FSI_CHAR_MAX_DEVICES);
return rc;
@@ -1360,6 +1372,7 @@ postcore_initcall(fsi_init);
static void fsi_exit(void)
{
+ class_unregister(&fsi_master_class);
bus_unregister(&fsi_bus_type);
unregister_chrdev_region(fsi_base_dev, FSI_CHAR_MAX_DEVICES);
ida_destroy(&fsi_minor_ida);