CONFIG_IDEDISK_MULTI_MODE in 2.4.21

I have an ide compact flash device on a couple of machines that reports dma errors. In 2.4.20 I was able to set CONFIG_IDEDISK_MULTI_MODE and the errors went away and all was peachy.

Now the errors are back in 2.4.21, and I noticed that the code that actually implemented CONFIG_IDEDISK_MULTI_MODE was gone, such that enabling the option did nothing.

I copied back in the old code from 2.4.20 for the option but I still get errors, I am guessing that it was removed because something was changed so that it no longer mattered or something.

So is CONFIG_IDEDISK_MULTI_MODE somehow obsolete or was this an over site?

If CONFIG_IDEDISK_MULTI_MODE is not supposed to matter anymore what should we do about trying to fix the errors that CONFIG_IDEDISK_MULTI_MODE used to (set_multimode: status=0x51 { DriveReady SeekComplete Error } &
set_multimode: error=0x04 { DriveStatusError })?

We now just check if the device claims it supports multimode and if so try and set a mode that is suitable