add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/drivers/mfd/pcf50633-adc.c
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@@ -136,6 +136,7 @@
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 			     void *callback_param)
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 {
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 	struct pcf50633_adc_request *req;
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+	int ret;
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 	/* req is freed when the result is ready, in interrupt handler */
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 	req = kmalloc(sizeof(*req), GFP_KERNEL);
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@@ -147,7 +148,11 @@
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 	req->callback = callback;
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 	req->callback_param = callback_param;
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-	return adc_enqueue_request(pcf, req);
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+	ret = adc_enqueue_request(pcf, req);
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+	if (ret)
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+		kfree(req);
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+
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+	return ret;
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 }
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 EXPORT_SYMBOL_GPL(pcf50633_adc_async_read);
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