add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/drivers/usb/chipidea/core.c
..
..
@@ -966,8 +966,15 @@
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 			     strlen(ci->roles[role]->name)))
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 			break;
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-	if (role == CI_ROLE_END || role == ci->role)
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+	if (role == CI_ROLE_END)
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 		return -EINVAL;
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+
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+	mutex_lock(&ci->mutex);
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+
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+	if (role == ci->role) {
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+		mutex_unlock(&ci->mutex);
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+		return n;
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+	}
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 	pm_runtime_get_sync(dev);
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 	disable_irq(ci->irq);
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@@ -977,6 +984,7 @@
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 		ci_handle_vbus_change(ci);
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 	enable_irq(ci->irq);
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 	pm_runtime_put_sync(dev);
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+	mutex_unlock(&ci->mutex);
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 	return (ret == 0) ? n : ret;
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 }
..
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@@ -1012,6 +1020,7 @@
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 		return -ENOMEM;
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 	spin_lock_init(&ci->lock);
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+	mutex_init(&ci->mutex);
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 	ci->dev = dev;
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 	ci->platdata = dev_get_platdata(dev);
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 	ci->imx28_write_fix = !!(ci->platdata->flags &
..
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@@ -1081,7 +1090,7 @@
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 	ret = ci_usb_phy_init(ci);
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 	if (ret) {
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 		dev_err(dev, "unable to init phy: %d\n", ret);
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-		return ret;
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+		goto ulpi_exit;
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 	}
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 	ci->hw_bank.phys = res->start;