Am Samstag, 30. Mai 2009 23:57:58 schrieb Russell King - ARM Linux: > > > Basically, the DMA API operates at cache line granularity and only > > > expects a _single_ buffer to be mapped per unit of granularity at any > > > one time. > > > > Thank you, that's very clear. > > > > Unfortunately I'm not the one doing this - anything that goes through > > usb_control_msg() could cause this since that function takes a pointer > > for the data buffer and internally kmalloc's the setup buffer. > > Well, USB is plainly buggy then. No, kmalloc must return memory aligned to a cache line. Somethings wrong with memory allocations on that platform. Do you define ARCH_KMALLOC_MINALIGN? Regards Oliver -- 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
