Ralf Baechle wrote:

I have no idea how big the soundblaster microcode being loaded actually is,
that is if the reduced size of 0x1f00 will be sufficient.

The biggest file is WFM0001A.CSP with 0x2df0 bytes.

I don't see how the old ioctl can possibly have been
used before so there isn't a compatibility problem.

The code uses SNDRV_SB_CSP_MAX_MICROCODE_FILE_SIZE but doesn't care what
the size field of the ioctl code is, so we could use any random value on
those architectures.

Or you could entirely sidestep the problem and use request_firmware()
but I guess that's more effort than you want to invest.

The driver already implements this for a bunch of predefined CSP code
blobs.  I'm not sure whether anybody has ever loaded additional .csp
files.


Regards,
Clemens