Driver core: change add_uevent_var to use a struct
This changes the uevent buffer functions to use a struct instead of a
long list of parameters. It does no longer require the caller to do the
proper buffer termination and size accounting, which is currently wrong
in some places. It fixes a known bug where parts of the uevent
environment are overwritten because of wrong index calculations.
Many thanks to Mathieu Desnoyers for finding bugs and improving the
error handling.
Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Cc: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
Cc: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/drivers/amba/bus.c b/drivers/amba/bus.c
index 268e301..6b94fb7 100644
--- a/drivers/amba/bus.c
+++ b/drivers/amba/bus.c
@@ -44,15 +44,12 @@
}
#ifdef CONFIG_HOTPLUG
-static int amba_uevent(struct device *dev, char **envp, int nr_env, char *buf, int bufsz)
+static int amba_uevent(struct device *dev, struct kobj_uevent_env *env)
{
struct amba_device *pcdev = to_amba_device(dev);
- int retval = 0, i = 0, len = 0;
+ int retval = 0;
- retval = add_uevent_var(envp, nr_env, &i,
- buf, bufsz, &len,
- "AMBA_ID=%08x", pcdev->periphid);
- envp[i] = NULL;
+ retval = add_uevent_var(env, "AMBA_ID=%08x", pcdev->periphid);
return retval;
}
#else