On Sun, Aug 14, 2016 at 03:03:16PM +0000, Karl Beldan wrote: > check_cache_range() warns that the top boundaries are not properly > aligned while flushing and invalidating the buffers and make these > operations to fail. > ATM the RX bottom boundaries are aligned by design with EMAC_RXBUF_SIZE, > properly aligned with ARCH_DMA_MINALIGN, however the top ones are not. > > This gets rid of the warnings: > CACHE: Misaligned operation at range > > Signed-off-by: Karl Beldan <karl.beldan+...@gmail.com> > --- > drivers/net/davinci_emac.c | 6 ++++-- > 1 file changed, 4 insertions(+), 2 deletions(-) > > diff --git a/drivers/net/davinci_emac.c b/drivers/net/davinci_emac.c > index 947bfab..55461b0 100644 > --- a/drivers/net/davinci_emac.c > +++ b/drivers/net/davinci_emac.c > @@ -632,7 +632,8 @@ static int davinci_eth_send_packet (struct eth_device > *dev, > EMAC_CPPI_EOP_BIT); > > flush_dcache_range((unsigned long)packet, > - (unsigned long)packet + length); > + round_up((unsigned long)packet + length, > + ARCH_DMA_MINALIGN));
It's preferred to use:
(unsigned long)packet + ALIGN(length, PKTALIGN));
here instead of ARCH_DMA_MINALIGN.
--
Tom
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