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    USB: ehci-orion: Call ehci_reset before ehci_halt · bcfa4e68
    Simon Kagstrom 提交于
    I noticed that USB initialization didn't setup correctly on my kirkwood
    based board (OpenRD base) if I hadn't initialized USB in U-boot first.
    The error message looks like this:
    
      ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
      orion-ehci orion-ehci.0: Marvell Orion EHCI
      orion-ehci orion-ehci.0: new USB bus registered, assigned bus number 1
      orion-ehci orion-ehci.0: can't setup
      orion-ehci orion-ehci.0: USB bus 1 deregistered
      orion-ehci orion-ehci.0: init orion-ehci.0 fail, -110
      orion-ehci: probe of orion-ehci.0 failed with error -110
    
    which is caused by ehci_halt() timing out in the handshake() call. I
    noticed that U-boot does a reset before calling handshake(), so this
    patch does the same thing for Linux. USB now works for me.
    Signed-off-by: NSimon Kagstrom <simon.kagstrom@netinsight.net>
    Acked-by: NNicolas Pitre <nico@marvell.com>
    Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
    bcfa4e68
ehci-orion.c 7.1 KB