[DM/MAILBOX] Fixup platform request will deadlock

GuEe-GUI · Rbb666 · commit 7b7e4686afb6 · 2024-12-02T21:14:34.000+08:00
Signed-off-by: GuEe-GUI &lt;2991707448@qq.com&gt;
diff --git a/components/drivers/mailbox/mailbox.c b/components/drivers/mailbox/mailbox.c
@@ -253,7 +253,11 @@ struct rt_mbox_chan *rt_mbox_request_by_index(struct rt_mbox_client *client, int
 
     if (!rt_ofw_data(ctrl_np))
     {
+        rt_spin_unlock(&mbox_ops_lock);
+
         rt_platform_ofw_request(ctrl_np);
+
+        rt_spin_lock(&mbox_ops_lock);
     }
 
     ctrl = rt_ofw_data(ctrl_np);

Original file line number	Diff line number	Diff line change
`@@ -253,7 +253,11 @@ struct rt_mbox_chan rt_mbox_request_by_index(struct rt_mbox_client client, int`
`253`	`253`
`254`	`254`	`if (!rt_ofw_data(ctrl_np))`
`255`	`255`	`{`
	`256`	`+ rt_spin_unlock(&mbox_ops_lock);`
	`257`	`+`
`256`	`258`	`rt_platform_ofw_request(ctrl_np);`
	`259`	`+`
	`260`	`+ rt_spin_lock(&mbox_ops_lock);`
`257`	`261`	`}`
`258`	`262`
`259`	`263`	`ctrl = rt_ofw_data(ctrl_np);`