From 22673b4d53fc5ad82f632d6cdaae2950190ef214 Mon Sep 17 00:00:00 2001 From: Ibai Erkiaga Date: Fri, 27 Sep 2019 11:36:54 +0100 Subject: [PATCH] mailbox: check ops prior calling Check if request and free operations are present prior calling to the functions. Signed-off-by: Ibai Erkiaga Signed-off-by: Michal Simek --- drivers/mailbox/mailbox-uclass.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/drivers/mailbox/mailbox-uclass.c b/drivers/mailbox/mailbox-uclass.c index 1b4a5863c9..809f26b202 100644 --- a/drivers/mailbox/mailbox-uclass.c +++ b/drivers/mailbox/mailbox-uclass.c @@ -63,7 +63,8 @@ int mbox_get_by_index(struct udevice *dev, int index, struct mbox_chan *chan) return ret; } - ret = ops->request(chan); + if (ops->request) + ret = ops->request(chan); if (ret) { debug("ops->request() failed: %d\n", ret); return ret; @@ -94,7 +95,10 @@ int mbox_free(struct mbox_chan *chan) debug("%s(chan=%p)\n", __func__, chan); - return ops->free(chan); + if (ops->free) + return ops->free(chan); + + return 0; } int mbox_send(struct mbox_chan *chan, const void *data) -- 2.39.5