• Zhang Run's avatar
    net: usb: asix: ax88772_bind return error when hw_reset fail · 6eea3527
    Zhang Run authored
    The ax88772_bind() should return error code immediately when the PHY
    was not reset properly through ax88772a_hw_reset().
    Otherwise, The asix_get_phyid() will block when get the PHY
    Identifier from the PHYSID1 MII registers through asix_mdio_read()
    due to the PHY isn't ready. Furthermore, it will produce a lot of
    error message cause system crash.As follows:
    asix 1-1:1.0 (unnamed net_device) (uninitialized): Failed to write
     reg index 0x0000: -71
    asix 1-1:1.0 (unnamed net_device) (uninitialized): Failed to send
     software reset: ffffffb9
    asix 1-1:1.0 (unnamed net_device) (uninitialized): Failed to write
     reg index 0x0000: -71
    asix 1-1:1.0 (unnamed net_device) (uninitialized): Failed to enable
     software MII access
    asix 1-1:1.0 (unnamed net_device) (uninitialized): Failed to read
     reg index 0x0000: -71
    asix 1-1:1.0 (unnamed net_device) (uninitialized): Failed to write
     reg index 0x0000: -71
    asix 1-1:1.0 (unnamed net_device) (uninitialized): Failed to enable
     software MII access
    asix 1-1:1.0 (unnamed net_device) (uninitialized): Failed to read
     reg index 0x0000: -71
    ...
    Signed-off-by: default avatarZhang Run <zhang.run@zte.com.cn>
    Reviewed-by: default avatarYang Wei <yang.wei9@zte.com.cn>
    Tested-by: default avatarMarcel Ziswiler <marcel.ziswiler@toradex.com>
    Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
    6eea3527
asix_devices.c 36.3 KB