2009/7/24 Johannes <joh.schrimpf@xxxxxxxxx>: > Hi Steve, > > thanks for the answer. Here is the part of the code which handles the > IN-transfer. I used the same code on an Olimex (Atmel AT91 cpu) development > board using linux 2.6.23 and it worked well. Two possible reason: 1, Buffers allocated by kmalloc is not cache aligned in your kernel version, and which has touched someone before. 2,OMAP3 uses ARMv7 core, I guess it is related with cpu speculative read, which may lead to cache inconsistent bug. You can verify it by adding cache invalidation manually in arm dma unmap. Thanks. -- Lei Ming -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
