• David Brownell's avatar
    [PATCH] usbcore misc cleanup · 846f917c
    David Brownell authored
    This has minor usbcore cleanups:
    
    DOC:
        - the changes passing a usb_interface to driver probe() and disconnect()
          weren't reflected in their adjacent docs.  likewise they still said
          it was possible to get a null usb_device_id (no more).
    
        - the (root) hub API restrictions from rmk's ARM patch weren't
          flagged
    
        - mention the non-dma-coherent cache issue for usb_buffer_alloc()
    
        - mention disconnect() cleanup issue with usb_{control,bulk}_msg()
          [ you can't cancel those urbs from disconnect() ]
    
    CODE
        - make driver ioctl() use 'usb_interface' too ... this update
          also resolves an old 'one instance per device' bad assumption
    
        - module locking on driver->ioctl() was goofy, kept BKL way too
          long and didn't try_inc_mod_count() like the rest of usbcore
    
        - hcd unlink code treated iso inappropriately like interrupt;
          only interrupt still wants that automagic mode
    
        - move iso init out of ohci into shared submit_urb logic
    
        - remove interrupt transfer length restriction; hcds that don't
          handle packetization (just like bulk :) should be updated,
          but device drivers won't care for now.
    846f917c
message.c 22 KB