Xu Nakajima wrote:

> Hello,
> Can anyone explain in short why is firmware needed in
> the zd1211 rewrite driver and there is no need for
> firmware in the regular zd1211 driver?

The firmware is contained inside the driver itself.

Having the firmware outside the driver, allows us 

- to save memory space, which the firmware would consume inside the
- to upgrade the firmware easily
- to prevent licensing issues
> And what, in short ,does firmware_class module do in
> this context?

It simply creates a directory in /sys/class/firmware, including
the file entries needed for the firmware upload, sends an uevent to udevd,
waits for the userspace to write the firmware into the
/sys/class/firmware directory and reads the firmware after it has
been written. 



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