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    USB: Defer Set-Interface for suspended devices · 55151d7d
    Alan Stern 提交于
    This patch (as1128) fixes one of the problems related to the new PM
    infrastructure.  We are not allowed to register new child devices
    during the middle of a system sleep transition, but unbinding a USB
    driver causes the core to automatically install altsetting 0 and
    thereby create new endpoint pseudo-devices.
    
    The patch fixes this problem (and the related problem that installing
    altsetting 0 will fail if the device is suspended) by deferring the
    Set-Interface call until some later time when it is legal and can
    succeed.  Possible later times are: when a new driver is being probed
    for the interface, and when the interface is being resumed.
    Signed-off-by: NAlan Stern <stern@rowland.harvard.edu>
    Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
    55151d7d
driver.c 50.1 KB