On Mon, May 10, 2010 at 06:42, Oskar Schirmer wrote: > With dma based spi transmission, data corruption > is observed occasionally. With dma buffers located > right next to msg and xfer fields, cache lines > correctly flushed in preparation for dma usage > may be polluted again when writing to fields > in the same cache line. > > Make sure cache fields used with dma do not > share cache lines with fields changed during > dma handling. As both fields are part of a > struct that is allocated via kzalloc, thus > cache aligned, moving the fields to the 1st > position and insert padding for alignment > does the job. Acked-by: Mike Frysinger <vapier@xxxxxxxxxx> i'm guessing Dmitry will pick it up now -mike -- To unsubscribe from this list: send the line "unsubscribe linux-input" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
