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mailbox: check ops prior calling

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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>
This commit is contained in:
Ibai Erkiaga 2019-09-27 11:36:54 +01:00 committed by Michal Simek
parent ff1b0da4ed
commit 22673b4d53
1 changed files with 6 additions and 2 deletions
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8
drivers/mailbox/mailbox-uclass.c
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@ -63,7 +63,8 @@ int mbox_get_by_index(struct udevice *dev, int index, struct mbox_chan *chan)
return ret; return ret;
} }
ret = ops->request(chan); if (ops->request)
ret = ops->request(chan);
if (ret) { if (ret) {
debug("ops->request() failed: %d\n", ret); debug("ops->request() failed: %d\n", ret);
return ret; return ret;
@ -94,7 +95,10 @@ int mbox_free(struct mbox_chan *chan)
debug("%s(chan=%p)\n", __func__, 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) int mbox_send(struct mbox_chan *chan, const void *data)