change system file

hc

2024-10-09 244b2c5ca8b14627e4a17755e5922221e121c771

 kernel/drivers/net/wan/fsl_ucc_hdlc.c
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@@ -34,6 +34,8 @@
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 #define TDM_PPPOHT_SLIC_MAXIN
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 #define RX_BD_ERRORS (R_CD_S | R_OV_S | R_CR_S | R_AB_S | R_NO_S | R_LG_S)
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+static int uhdlc_close(struct net_device *dev);
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+
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 static struct ucc_tdm_info utdm_primary_info = {
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 	.uf_info = {
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 		.tsa = 0,
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@@ -708,6 +710,7 @@
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 	hdlc_device *hdlc = dev_to_hdlc(dev);
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 	struct ucc_hdlc_private *priv = hdlc->priv;
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 	struct ucc_tdm *utdm = priv->utdm;
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+	int rc = 0;
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 	if (priv->hdlc_busy != 1) {
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 		if (request_irq(priv->ut_info->uf_info.irq,
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@@ -731,10 +734,13 @@
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 		napi_enable(&priv->napi);
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 		netdev_reset_queue(dev);
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 		netif_start_queue(dev);
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-		hdlc_open(dev);
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+
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+		rc = hdlc_open(dev);
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+		if (rc)
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+			uhdlc_close(dev);
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 	}
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-	return 0;
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+	return rc;
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 }
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 static void uhdlc_memclean(struct ucc_hdlc_private *priv)
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@@ -823,6 +829,8 @@
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 	netif_stop_queue(dev);
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 	netdev_reset_queue(dev);
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 	priv->hdlc_busy = 0;
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+
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+	hdlc_close(dev);
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 	return 0;
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 }
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@@ -1245,9 +1253,11 @@
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 free_dev:
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 	free_netdev(dev);
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 undo_uhdlc_init:
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-	iounmap(utdm->siram);
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+	if (utdm)
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+		iounmap(utdm->siram);
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 unmap_si_regs:
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-	iounmap(utdm->si_regs);
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+	if (utdm)
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+		iounmap(utdm->si_regs);
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 free_utdm:
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 	if (uhdlc_priv->tsa)
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 		kfree(utdm);