* Venkatraman S <svenkatr@xxxxxx> [100311 07:04]: > Tony Lindgren wrote: > > > > Does the driver still work in PIO mode? > > > > We need to have the drivers capable to fail over to PIO mode > > as the DMA channels can run out. > > > > The driver doesn't have an automatic fallback to PIO, > even without my patch. A error return from omap_request_dma is > propogated all the way back to the transfer request. > The decision to use_dma (the variable) is unaltered. OK, that might explain some nasty surprises then.. With these patches, does the driver still work in PIO mode though? > Infact, it would be easier to implement a runtime fallback after > this patch is > merged as I have separated out the capability and runtime selection. > (dma_caps and dma_in_use). Sounds good to me, thanks for looking into it. Regards, Tony -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
