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Diffstat (limited to 'kernel/drivers/mailbox/pcc.c')
-rw-r--r--kernel/drivers/mailbox/pcc.c12
1 files changed, 9 insertions, 3 deletions
diff --git a/kernel/drivers/mailbox/pcc.c b/kernel/drivers/mailbox/pcc.c
index 7e91d68a3..45d85aea9 100644
--- a/kernel/drivers/mailbox/pcc.c
+++ b/kernel/drivers/mailbox/pcc.c
@@ -122,7 +122,7 @@ struct mbox_chan *pcc_mbox_request_channel(struct mbox_client *cl,
*/
chan = get_pcc_channel(subspace_id);
- if (!chan || chan->cl) {
+ if (IS_ERR(chan) || chan->cl) {
dev_err(dev, "Channel not found for idx: %d\n", subspace_id);
return ERR_PTR(-EBUSY);
}
@@ -198,7 +198,7 @@ static int pcc_send_data(struct mbox_chan *chan, void *data)
return 0;
}
-static struct mbox_chan_ops pcc_chan_ops = {
+static const struct mbox_chan_ops pcc_chan_ops = {
.send_data = pcc_send_data,
};
@@ -352,4 +352,10 @@ static int __init pcc_init(void)
return 0;
}
-device_initcall(pcc_init);
+
+/*
+ * Make PCC init postcore so that users of this mailbox
+ * such as the ACPI Processor driver have it available
+ * at their init.
+ */
+postcore_initcall(pcc_init);