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| Filename | Latest commit message | Latest commit date |
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e0511f6c1c
Actually there's nothing wrong with the two changes marked as "Fixes", they just revealed a problem which has been existing before. After having switched r8169 to phylib it was reported that WoL from shutdown doesn't work any longer (WoL from suspend isn't affected). Reason is that during shutdown phy_disconnect()->phy_detach()-> phy_suspend() is called. A similar issue occurs when the phylib state machine calls phy_suspend() when handling state PHY_HALTED. Core of the problem is that phy_suspend() suspends the PHY when it should not due to WoL. phy_suspend() checks for WoL already, but this works only if the PHY driver handles WoL (what is rarely the case). Typically WoL is handled by the MAC driver. phylib knows about this and handles it in mdio_bus_phy_may_suspend(), but that's used only when suspending the system, not in other cases like shutdown. Therefore factor out the relevant check from mdio_bus_phy_may_suspend() to a new function phy_may_suspend() and use it in phy_suspend(). Last but not least change phy_detach() to call phy_suspend() before attached_dev is set to NULL. phy_suspend() accesses attached_dev when checking whether the MAC driver activated WoL. Fixes: |
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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.
See Documentation/00-INDEX for a list of what is contained in each file.
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.