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rtl_init_one() currently enables PCI wakeups if the ethernet device is found to be WOL-capable. There is no need to do this when rtl8169_set_wol() will correctly enable or disable the same wakeup flag when WOL is activated/deactivated. This works around an ACPI DSDT bug which prevents the Acer laptop models Aspire ES1-533, Aspire ES1-732, PackardBell ENTE69AP and Gateway NE533 from entering S3 suspend - even when no ethernet cable is connected. On these platforms, the DSDT says that GPE08 is a wakeup source for ethernet, but this GPE fires as soon as the system goes into suspend, waking the system up immediately. Having the wakeup normally disabled avoids this issue in the default case. With this change, WOL will continue to be unusable on these platforms (it will instantly wake up if WOL is later enabled by the user) but we do not expect this to be a commonly used feature on these consumer laptops. We have separately determined that WOL works fine without any ACPI GPEs enabled during sleep, so a DSDT fix or override would be possible to make WOL work. Signed-off-by: Daniel Drake <drake@endlessm.com> Signed-off-by: David S. Miller <davem@davemloft.net> |
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Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. 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.