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greybus: protocol.c: fix a kernel panic caused by __gb_protocol_register

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__gb_protocol_register check if the protocol is not already registred,
and then register it. It register in existing->lists but at this point,
existing is always NULL (we exist just before if not).
Use gb_protocols instead.

Signed-off-by: Alexandre Bailon <abailon@baylibre.com>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
This commit is contained in:
Alexandre Bailon 2015-01-22 15:23:37 +08:00 committed by Greg Kroah-Hartman
parent 89210f64ba
commit c2f792382b
1 changed files with 1 additions and 1 deletions
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2
drivers/staging/greybus/protocol.c
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@ -70,7 +70,7 @@ int __gb_protocol_register(struct gb_protocol *protocol, struct module *module)
* We need to insert the protocol here, before the existing one
* (or before the head if we searched the whole list)
*/
list_add_tail(&protocol->links, &existing->links);
list_add_tail(&protocol->links, &gb_protocols);
spin_unlock_irq(&gb_protocols_lock);
pr_info("Registered %s protocol.\n", protocol->name);