add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/drivers/usb/chipidea/otg.c
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@@ -166,8 +166,10 @@
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 static void ci_handle_id_switch(struct ci_hdrc *ci)
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 {
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-	enum ci_role role = ci_otg_role(ci);
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+	enum ci_role role;
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+	mutex_lock(&ci->mutex);
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+	role = ci_otg_role(ci);
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 	if (role != ci->role) {
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 		dev_dbg(ci->dev, "switching from %s to %s\n",
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 			ci_role(ci)->name, ci->roles[role]->name);
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@@ -197,6 +199,7 @@
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 		if (role == CI_ROLE_GADGET)
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 			ci_handle_vbus_change(ci);
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 	}
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+	mutex_unlock(&ci->mutex);
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 }
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 /**
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  * ci_otg_work - perform otg (vbus/id) event handle