[linux-dvb] Re: Kernel oops with ttusb_dec

[Alex Woods <linux-dvb@giblets.org>]

> Does this mean that the kernel from SuSE has no internal crc32 functions?
>

Sod's law, really.  After digging around in various kernels, it seems that the 
crc32 function that the ttusb_dec uses first appears in kernel 2.4.22.  For a 
quick fix, cut these lines out of ttusb_dec.c:ttusb_dec_boot_dsp() :

        crc32_csum = crc32(~0L, firmware, 56) ^ ~0L;
        memcpy(&tmp, &firmware[56], 4);
        crc32_check = htonl(tmp);
        if (crc32_csum != crc32_check) {
                printk("%s: crc32 check of DSP code failed (calculated "
                       "0x%08x != 0x%08x in file), file invalid.\n",
                        __FUNCTION__, crc32_csum, crc32_check);
                return -1;
        }


As for something more long term I'm not too sure.  I guess it depends on what 
version of the kernel is considered the minimum requirement for the next 
tarball release of the drivers.

Cheers,
Alex



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