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Kevin Hao 86ad5c4ac7 net: ti: icssg-prueth: Add optional dependency on HSR 
[ Upstream commit e3998b6e90 ]

Commit 95540ad674 ("net: ti: icssg-prueth: Add support for HSR frame
forward offload") introduced support for offloading HSR frame forwarding,
which relies on functions such as is_hsr_master() provided by the HSR
module. Although HSR provides stubs for configurations with HSR
disabled, this driver still requires an optional dependency on HSR.
Otherwise, build failures will occur when icssg-prueth is built-in
while HSR is configured as a module.
  ld.lld: error: undefined symbol: is_hsr_master
  >>> referenced by icssg_prueth.c:710 (drivers/net/ethernet/ti/icssg/icssg_prueth.c:710)
  >>>               drivers/net/ethernet/ti/icssg/icssg_prueth.o:(icssg_prueth_hsr_del_mcast) in archive vmlinux.a
  >>> referenced by icssg_prueth.c:681 (drivers/net/ethernet/ti/icssg/icssg_prueth.c:681)
  >>>               drivers/net/ethernet/ti/icssg/icssg_prueth.o:(icssg_prueth_hsr_add_mcast) in archive vmlinux.a
  >>> referenced by icssg_prueth.c:1812 (drivers/net/ethernet/ti/icssg/icssg_prueth.c:1812)
  >>>               drivers/net/ethernet/ti/icssg/icssg_prueth.o:(prueth_netdevice_event) in archive vmlinux.a

  ld.lld: error: undefined symbol: hsr_get_port_ndev
  >>> referenced by icssg_prueth.c:712 (drivers/net/ethernet/ti/icssg/icssg_prueth.c:712)
  >>>               drivers/net/ethernet/ti/icssg/icssg_prueth.o:(icssg_prueth_hsr_del_mcast) in archive vmlinux.a
  >>> referenced by icssg_prueth.c:712 (drivers/net/ethernet/ti/icssg/icssg_prueth.c:712)
  >>>               drivers/net/etherneteth_hsr_del_mcast) in archive vmlinux.a
  >>> referenced by icssg_prueth.c:683 (drivers/net/ethernet/ti/icssg/icssg_prueth.c:683)
  >>>               drivers/net/ethernet/ti/icssg/icssg_prueth.o:(icssg_prueth_hsr_add_mcast) in archive vmlinux.a
  >>> referenced 1 more times

Fixes: 95540ad674 ("net: ti: icssg-prueth: Add support for HSR frame forward offload")
Signed-off-by: Kevin Hao <haokexin@gmail.com>
Cc: stable@vger.kernel.org
Link: https://patch.msgid.link/20260207-icssg-dep-v3-1-8c47c1937f81@gmail.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
History 2026-03-04 07:21:56 -05:00
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README 

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the reStructuredText markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.