On Wed, 26 Dec 2007 10:40:22 -0800 "raki john" <[email protected]> wrote: > Hi All, > > I am working with pxamci driver(2.6.22.1). I have made , core and host > as separate modules. > > what is the correct order of loading the modules > > i am doing in this order first core (mmc_core.ko), then card(mmc_block.ko) > after that host driver ( pxamci.ko). Is this correct. > If you're using just insmod, then yes, this is a valid order. The only thing that is crucial is that mmc_core is loaded before any of the other. If you use modprobe that will happen automatically. > I do not know much about Linux device model. > There's lots of info on the web and in the Documentation/ directory of the kernel source if you want to indulge yourself. > i saw that pxamci.ko driver registers it self as platform_driver. When > does its probe function is called. Is it called immediately after > platform_driver_register(&pxamci_driver) is called. > For pxamci, yes. More specifically, the probe function is called when there is both a driver (created by platform_driver_register()) and a device (platform_device_register()) available. But since the device is added very early in the pxamci case, the magic will happen when the driver registers. > also in card driver (mmc_block.ko) in block.c file i saw a probe > function(mmc_blk_probe). How does it is invoked . > When the corresponding device is registered. In this case it is whenever a card is detected and initialized. Rgds Pierre
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