Hello,
< mandeep_sandhu@xxxxxxxxxxx> wrote:
> just to add to this...a MAJOR number is used by the kernel to
> figure out which driver to call and the MINOR number is simply passed
> on to the device driver for its use. The driver uses this minor num.
> to distinguish btw. the various devices it controls.
>
> Major num serves as an index into an array which holds the various
> drivers registered with the kernel.
I dont know how to communicate my concern. I can't digest how come
MAJOR NUMBER identifies the driver rather than the device type as I
see different drivers for different devices of the same type but the
device file is ALWAYS the same. E.g (i dont know if this is a good
example or not) when i say /dev/video0 the kernel knows i am talking
about the tv capture card and when i say /dev/video1 the kernel knows
that i am talking of my webcam. Now the major number of both are the
same but the device driver is definatelly not the same. How do you
explain that?
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