• Alan Stern's avatar
    USB: break apart flush_endpoint and disable_endpoint · 95cf82f9
    Alan Stern authored
    This patch (as988) breaks usb_hcd_endpoint_disable() apart into two
    routines.  The first, usb_hcd_flush_endpoint() does the -ESHUTDOWN
    unlinking of all URBs in the endpoint's queue and waits for them to
    complete.  The second, usb_hcd_disable_endpoint() -- renamed for
    better grammatical style -- merely calls the HCD's endpoint_disable
    method.  The changeover is easy because the routine currently has only
    one caller.
    
    This separation of function will be exploited in the following patch:
    When a device is suspended, the core will be able to cancel all
    outstanding URBs for that device while leaving the HCD's
    endpoint-related data structures intact for later.
    
    As an added benefit, HCDs no longer need to check for existing URBs in
    their endpoint_disable methods.  It is now guaranteed that there will
    be none.
    Signed-off-by: default avatarAlan Stern <stern@rowland.harvard.edu>
    Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
    95cf82f9
message.c 53.1 KB