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    USB: Enhance usage of pm_message_t · 65bfd296
    Alan Stern 提交于
    This patch (as1177) modifies the USB core suspend and resume
    routines.  The resume functions now will take a pm_message_t argument,
    so they will know what sort of resume is occurring.  The new argument
    is also passed to the port suspend/resume and bus suspend/resume
    routines (although they don't use it for anything but debugging).
    
    In addition, special pm_message_t values are used for user-initiated,
    device-initiated (i.e., remote wakeup), and automatic suspend/resume.
    By testing these values, drivers can tell whether or not a particular
    suspend was an autosuspend.  Unfortunately, they can't do the same for
    resumes -- not until the pm_message_t argument is also passed to the
    drivers' resume methods.  That will require a bigger change.
    
    IMO, the whole Power Management framework should have been set up this
    way in the first place.
    Signed-off-by: NAlan Stern <stern@rowland.harvard.edu>
    Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
    65bfd296
hcd.c 58.9 KB