From: Ibai Erkiaga ibai.erkiaga-elorza@xilinx.com
Check if request and free operations are present prior calling to the functions.
Signed-off-by: Ibai Erkiaga ibai.erkiaga-elorza@xilinx.com Signed-off-by: Michal Simek michal.simek@xilinx.com ---
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 1b4a5863c9e5..809f26b20258 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)