Russell, On Thu, Apr 14, 2011 at 5:30 PM, Russell King - ARM Linux <linux@xxxxxxxxxxxxxxxx> wrote: > On Thu, Apr 14, 2011 at 04:52:48PM -0500, Fernando Guzman Lugo wrote: >> From: Ramesh Gupta <grgupta@xxxxxx> >> >> This patch is to flush the iommu page table entries from L1 and L2 >> caches using dma_map_single. This also simplifies the implementation >> by removing the functions flush_iopgd_range/flush_iopte_range. > > No. This usage is just wrong. If you're going to use the DMA API then > unmap it, otherwise the DMA API debugging will go awol. > Thank you for the comments, this particular memory is always a write from the A9 for MMU programming and only read from the slave processor, that is the reason for not calling the unmap. I can re-look into the changes to call unmap in a proper way as this impacts the DMA API. Are there any other ways to perform only flush the memory from L1/L2 caches? regards Ramesh Gupta G -- 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
