Messages in this thread | | | Date | Wed, 16 Nov 2005 15:39:09 +0800 | From | Tony <> | Subject | Re: MOD_INC_USE_COUNT |
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Ralf Baechle wrote: > On Tue, Nov 15, 2005 at 11:56:33AM +0800, Tony wrote: > > >>>Not strange at all. The typical network driver is implemented using >>>pci_register_driver which will set the owner filed of the driver's struct >>>driver which then is being used for internal reference counting. Other >>>busses or line disciplines (SLIP, PPP, AX.25 ...) need to do the equivalent >>>or the kernel will believe reference counting isn't necessary and it's >>>ok to unload the module at any time. >>> >>>In which driver did you hit this problem? >>> >>> Ralf >>> >> >>I have a radio connected to host using ethernet. I'm writing a radio >>driver that masquerade radio as a NIC. when the module is loaded, I just >>register_netdev a net_device struct, while unregister_netdev at module >>cleanup. > > > register_netdev / unregister_netdev don't deal with the .owner stuff, so > your bug isn't there. If your NIC is a PCI card, it should register it's > driver through pci_register_driver which would deal with the necessary > reference counting. If it's implemented as a platform device you're > presumably calling driver_register() before platform_device_register() and > driver_register() would do the necessary magic for you. If you're using a > different bus it may have it's own variant of driver_register which you > should call. If you don't, you have a problem :-) > > Ralf > That is indeed my problem. My driver is none of types of drivers, it's just a software virtual one. I think I should mimic the way SLIP handle it. thank a loooooooot!!!
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