Re: [PATCH] 2.4.22-pre4 ide module fix init_cmd640_vlb

[Jeff Chua]

One more thing ... when compiled as a module, DMA can't be enabled!
If compiled as non-modules (CONFIG_IDE=y, CONFIG_BLK_DEV_IDE=y), DMA works
fine.

# hdparm -d 1 /dev/hda

/dev/hda:
 setting using_dma to 1 (on)
 HDIO_SET_DMA failed: Operation not permitted
 using_dma    =  0 (off)

My .config ...

	CONFIG_IDE=m
	CONFIG_BLK_DEV_IDE=m
	CONFIG_BLK_DEV_IDEDISK=m
	CONFIG_IDEDISK_MULTI_MODE=y
	CONFIG_BLK_DEV_CMD640=y
	CONFIG_BLK_DEV_CMD640_ENHANCED=y
	CONFIG_BLK_DEV_IDEPCI=y
	CONFIG_IDEPCI_SHARE_IRQ=y
	CONFIG_BLK_DEV_IDEDMA_PCI=y
	CONFIG_IDEDMA_PCI_AUTO=y
	CONFIG_BLK_DEV_IDEDMA=y
	CONFIG_BLK_DEV_PIIX=y
	CONFIG_IDEDMA_AUTO=y
	CONFIG_BLK_DEV_IDE_MODES=y

Thanks,
Jeff
[ [e-mail] ]

On Fri, 11 Jul 2003, Jeff Chua wrote:

> On Thu, 10 Jul 2003, James Bourne wrote:
>
> > On 10 Jul 2003, Alan Cox wrote:
> >
> > > And stops it working for everyone else. The function does exist too. See
> > > drivers/ide/pci/cmd640.c
>
> Sorry. Missed this one.
>
>
> > Here's a patch that does that exact thing, I haven't tested it though.
> >
>
> "make" doesn't seem to pick up ide/pci/cmd640.c when IDE is compiled as a
> module.
>
> 	touch drivers/ide/pci/cmd640.c; make; make modules;
> 	*** it doesn't compile cmd640.c
>
>
> Jeff
>
>
>
>