netdev - Please apply 5b1e38c0792cc7a44997328de37d393f81b2501a to 5.15

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Message-ID: <20251204002517.GC468348@ax162>
Date: Wed, 3 Dec 2025 17:25:17 -0700
From: Nathan Chancellor <nathan@...nel.org>
To: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Sasha Levin <sashal@...nel.org>
Cc: stable@...r.kernel.org, netdev@...r.kernel.org,
	Ioana Ciornei <ioana.ciornei@....com>
Subject: Please apply 5b1e38c0792cc7a44997328de37d393f81b2501a to 5.15

Hi stable folks,

Please apply commit 5b1e38c0792c ("dpaa2-mac: bail if the dpmacs fwnode
is not found") to 5.15, where it addresses an instance of
-Wsometimes-uninitialized with clang-21 and newer, introduced by commit
3264f599c1a8 ("net: dpaa2-mac: Add ACPI support for DPAA2 MAC driver")
in 5.14.

  drivers/net/ethernet/freescale/dpaa2/dpaa2-mac.c:54:13: error: variable 'parent' is used uninitialized whenever 'if' condition is false [-Werror,-Wsometimes-uninitialized]
     54 |         } else if (is_acpi_node(fwnode)) {
        |                    ^~~~~~~~~~~~~~~~~~~~
  drivers/net/ethernet/freescale/dpaa2/dpaa2-mac.c:58:29: note: uninitialized use occurs here
     58 |         fwnode_for_each_child_node(parent, child) {
        |                                    ^~~~~~
  drivers/net/ethernet/freescale/dpaa2/dpaa2-mac.c:54:9: note: remove the 'if' if its condition is always true
     54 |         } else if (is_acpi_node(fwnode)) {
        |                ^~~~~~~~~~~~~~~~~~~~~~~~~
  drivers/net/ethernet/freescale/dpaa2/dpaa2-mac.c:43:39: note: initialize the variable 'parent' to silence this warning
     43 |         struct fwnode_handle *fwnode, *parent, *child  = NULL;
        |                                              ^
        |                                               = NULL

It applies and builds cleanly for me. If there are any issues, please
let me know.

Cheers,
Nathan