Messages in this thread | | | Subject | Re: [PATCH, IDE] Blacklist CD-912E/ATK | From | Alan Cox <> | Date | Tue, 22 Nov 2005 20:26:19 +0000 |
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> The drive is clearly broken. Adding blacklist to drivers/ide/ide-dma.c > for this model ("CD-912E/ATK") fixes this problem.
That may be the case but knowing if th drive is the problem is more tricky.
Firstly try it on a different controller Secondly check for other firmware revisions Thirdly blacklist only your firmware rev if there are others
> hdc: DMA disabled > ------------[ cut here ]------------ > kernel BUG at drivers/ide/ide-iops.c:949! > invalid operand: 0000 [#1]
That is an IDE layer bug not a drive incompatibility. It may be one triggered the other but until the BUG the kernel was correctly behaving and had just turned off DMA anyway.
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