On Tue, 7 Jun 2011 23:56:21 -0700 Dan Williams <dan.j.williams@xxxxxxxxx> wrote: > > The dma parameter restriction could be due to software (HBA drivers, > > or subsystem). The value should be whatever the dma device driver says > > it is in such case? > > I'm assuming that the dma driver is taking responsibility for setting > this correctly. How would this work otherwise... HBA driver or > subsystem queries the dmaengine device and then sets this parameter on > its behalf? In other words dmanengine *is* the subsystem, if I am > understanding your definition. Oops, I meant that the subsystem is software layer above dmaengine. For example, SCSI subsystem sets the limit of max number of sglist entries. That is, it is possible that software layer above dmaengine could set dma limit, which is smaller than the limit of dmaengine? -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
