From: Holger Brunck <holger.brunck@hitachienergy.com>
Date: Wed, 29 Apr 2026 11:42:07 +0000 (+0200)
Subject: net: wan: fsl_ucc_hdlc: fix uhdlc_memclean
X-Git-Tag: v7.1-rc3~26^2~53
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=1a57efe250a13906396c2a4792f0090f142f9844;p=thirdparty%2Fkernel%2Flinux.git

net: wan: fsl_ucc_hdlc: fix uhdlc_memclean

Unmapping of uf_regs is done from ucc_fast_free and doesn't need to be
done explicitly. If already unmapped ucc_fast_free will crash.

Fixes: c19b6d246a35 ("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>
---

diff --git a/drivers/net/wan/fsl_ucc_hdlc.c b/drivers/net/wan/fsl_ucc_hdlc.c
index 3bd57527b1be..8155e92af14e 100644
--- a/drivers/net/wan/fsl_ucc_hdlc.c
+++ b/drivers/net/wan/fsl_ucc_hdlc.c
@@ -773,11 +773,6 @@ static void uhdlc_memclean(struct ucc_hdlc_private *priv)
 	kfree(priv->tx_skbuff);
 	priv->tx_skbuff = NULL;
 
-	if (priv->uf_regs) {
-		iounmap(priv->uf_regs);
-		priv->uf_regs = NULL;
-	}
-
 	if (priv->uccf) {
 		ucc_fast_free(priv->uccf);
 		priv->uccf = NULL;