Re: [PATCH 2/2] scsi: Use new __dma_buffer to align sense buffer inscsi_cmnd

[Alan Cox]

On Fri, 21 Dec 2007 13:30:08 +1100
Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx> wrote:

> The sense buffer ins scsi_cmnd can nowadays be DMA'ed into directly
> by some low level drivers (that typically happens with USB mass
> storage).

Should that not be fixed in USB storage by using pci_alloc_coherent on the
PCI device of the hub not peeing directly into kernel space ?

It's also incomplete as a fix because I don't see what guarantees the
buffer size will always exceed cache line size

Alan
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