Some mailbox hardware doesn't have to perform any additional operations
on startup of shutdown, so make these optional.
Signed-off-by: Bjorn Andersson <bjorn.andersson@xxxxxxxxxx>
---
Changes since v5:
- None
drivers/mailbox/mailbox.c | 16 ++++++++++------
1 file changed, 10 insertions(+), 6 deletions(-)
diff --git a/drivers/mailbox/mailbox.c b/drivers/mailbox/mailbox.c
index 4671f8a12872..505651ce9dcc 100644
--- a/drivers/mailbox/mailbox.c
+++ b/drivers/mailbox/mailbox.c
@@ -352,11 +352,14 @@ struct mbox_chan *mbox_request_channel(struct mbox_client *cl, int index)
spin_unlock_irqrestore(&chan->lock, flags);
- ret = chan->mbox->ops->startup(chan);
- if (ret) {
- dev_err(dev, "Unable to startup the chan (%d)\n", ret);
- mbox_free_channel(chan);
- chan = ERR_PTR(ret);
+ if (chan->mbox->ops->startup) {
+ ret = chan->mbox->ops->startup(chan);
+
+ if (ret) {
+ dev_err(dev, "Unable to startup the chan (%d)\n", ret);
+ mbox_free_channel(chan);
+ chan = ERR_PTR(ret);
+ }
}
mutex_unlock(&con_mutex);
@@ -405,7 +408,8 @@ void mbox_free_channel(struct mbox_chan *chan)
if (!chan || !chan->cl)
return;
- chan->mbox->ops->shutdown(chan);
+ if (chan->mbox->ops->shutdown)
+ chan->mbox->ops->shutdown(chan);
/* The queued TX requests are simply aborted, no callbacks are made */
spin_lock_irqsave(&chan->lock, flags);
--
2.12.0
--
To unsubscribe from this list: send the line "unsubscribe linux-soc" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
