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authorBenjamin Herrenschmidt <benh@kernel.crashing.org>2012-12-14 10:32:52 +1100
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2012-12-14 10:32:52 +1100
commitd526e85f60fce9aa2a1432cbd06e3cf20c1644c8 (patch)
tree8432d5f7f36254fcfea5a1c2d38a93a4fac42a8b /lib/of-reconfig-notifier-error-inject.c
parent1a9bd45412665e73c72612b6f744378d860e02a8 (diff)
downloadop-kernel-dev-d526e85f60fce9aa2a1432cbd06e3cf20c1644c8.zip
op-kernel-dev-d526e85f60fce9aa2a1432cbd06e3cf20c1644c8.tar.gz
powerpc+of: Rename and fix OF reconfig notifier error inject module
This module used to inject errors in the pSeries specific dynamic reconfiguration notifiers. Those are gone however, replaced by generic notifiers for changes to the device-tree. So let's update the module to deal with these instead and rename it along the way. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: Akinobu Mita <akinobu.mita@gmail.com>
Diffstat (limited to 'lib/of-reconfig-notifier-error-inject.c')
-rw-r--r--lib/of-reconfig-notifier-error-inject.c51
1 files changed, 51 insertions, 0 deletions
diff --git a/lib/of-reconfig-notifier-error-inject.c b/lib/of-reconfig-notifier-error-inject.c
new file mode 100644
index 0000000..8dc7986
--- /dev/null
+++ b/lib/of-reconfig-notifier-error-inject.c
@@ -0,0 +1,51 @@
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/of.h>
+
+#include "notifier-error-inject.h"
+
+static int priority;
+module_param(priority, int, 0);
+MODULE_PARM_DESC(priority, "specify OF reconfig notifier priority");
+
+static struct notifier_err_inject reconfig_err_inject = {
+ .actions = {
+ { NOTIFIER_ERR_INJECT_ACTION(OF_RECONFIG_ATTACH_NODE) },
+ { NOTIFIER_ERR_INJECT_ACTION(OF_RECONFIG_DETACH_NODE) },
+ { NOTIFIER_ERR_INJECT_ACTION(OF_RECONFIG_ADD_PROPERTY) },
+ { NOTIFIER_ERR_INJECT_ACTION(OF_RECONFIG_REMOVE_PROPERTY) },
+ { NOTIFIER_ERR_INJECT_ACTION(OF_RECONFIG_UPDATE_PROPERTY) },
+ {}
+ }
+};
+
+static struct dentry *dir;
+
+static int err_inject_init(void)
+{
+ int err;
+
+ dir = notifier_err_inject_init("OF-reconfig",
+ notifier_err_inject_dir, &reconfig_err_inject, priority);
+ if (IS_ERR(dir))
+ return PTR_ERR(dir);
+
+ err = of_reconfig_notifier_register(&reconfig_err_inject.nb);
+ if (err)
+ debugfs_remove_recursive(dir);
+
+ return err;
+}
+
+static void err_inject_exit(void)
+{
+ of_reconfig_notifier_unregister(&reconfig_err_inject.nb);
+ debugfs_remove_recursive(dir);
+}
+
+module_init(err_inject_init);
+module_exit(err_inject_exit);
+
+MODULE_DESCRIPTION("OF reconfig notifier error injection module");
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Akinobu Mita <akinobu.mita@gmail.com>");
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