> Hi folks, > > I am trying to enable the whole musb HS DMA code on Blackfin. But > found the is no place to clean the DMA interrupt flag in musbhsdma.c. > As a result, the irq always happens with the same DMA irq source. I > add some code to clear the DMA interrupt. Did I miss something here? The DMA interrupt register is cleared on a read. I don't think you need to explicitly clear it. > > After enabling the musb HS DMA code for Blackfin, normal operation is > OK for mount/umount U-disks. But when I tried to write large file to > the U-DISK (such as 10Mbyte or 100Mbyte), speed is very slow and mush > slower than PIO mode, IMO. > Did you guy meet this issue before on OMAP? > > Thanks > -Bryan - Anand -- 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
