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[ Upstream commit27161db090] While phylink_pcs_ops :: pcs_get_state does return void, xpcs_get_state() does check for a non-zero return code from xpcs_get_state_c37_sgmii() and prints that as a message to the kernel log. However, a non-zero return code from xpcs_read() is translated into "return false" (i.e. zero as int) and the I/O error is therefore not printed. Fix that. Fixes:b97b5331b8("net: pcs: add C37 SGMII AN support for intel mGbE controller") Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com> Link: https://lore.kernel.org/r/20220720112057.3504398-1-vladimir.oltean@nxp.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
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 Restructured Text 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.