Commit 851bba80 authored Apr 29, 2026 by Holger Brunck Committed by Jakub Kicinski May 02, 2026

net: wan: fsl_ucc_hdlc: fix ucc_hdlc_remove



If the driver is used in a non tdm mode priv->utdm is a NULL pointer.
Therefore we need to check this pointer first before checking si_regs.

Fixes: c19b6d24 ("drivers/net: support hdlc function for QE-UCC")
Signed-off-by: Holger Brunck <holger.brunck@hitachienergy.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

parent 1a57efe2

drivers/net/wan/fsl_ucc_hdlc.c

+2 −2

Original line number	Diff line number	Diff line
		@@ -1250,12 +1250,12 @@ static void ucc_hdlc_remove(struct platform_device *pdev)

		uhdlc_memclean(priv);

		if (priv->utdm->si_regs) {
		if (priv->utdm && priv->utdm->si_regs) {
		iounmap(priv->utdm->si_regs);
		priv->utdm->si_regs = NULL;
		}

		if (priv->utdm->siram) {
		if (priv->utdm && priv->utdm->siram) {
		iounmap(priv->utdm->siram);
		priv->utdm->siram = NULL;
		}