The driver will only work if a) you compiled it from source, and had the correct kernel source installed at the same time, or b) installed the driver that matched the kernel you currently have running.
The best thing to do (well, the simplest at least), would be to download the pre-built Suse rpm package, and install that. The package name is "smartlink-softmodem.<someversion>.rpm".
Cheers,
mj
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