On 11/9/07, Grant Likely <[EMAIL PROTECTED]> wrote:
> On 11/9/07, Domen Puncer <[EMAIL PROTECTED]> wrote:
> > On 09/11/07 00:31 -0500, Jon Smirl wrote:
> > > This is the reason I couldn't get user space started or connect to my
> > > nfs server. Patch is against current linus git.
> > >
> > > mpc5200 fec driver is corrupting memory. This patch fixes two bugs
> > > where the wrong skb buffer was being referenced.
> > >
> > > Signed-off-by: Jon Smirl <[EMAIL PROTECTED]>
> >
> > Acked-by: Domen Puncer <[EMAIL PROTECTED]>
>
> Signed-off-by: Grant Likely <[EMAIL PROTECTED]>
>
> Jeff, can you please pick this up for .24?
This is didn't make it into rc3. Without this patch this driver is broken.
>
> Thanks,
> g.
>
> >
> > I can't test it at the moment, but the patch is obviously correct,
> > mapped buffer should be the _same_ as submitted.
> >
> > >
> > > ---
> > >
> > > drivers/net/fec_mpc52xx.c | 4 ++--
> > > 1 files changed, 2 insertions(+), 2 deletions(-)
> > >
> > >
> > > diff --git a/drivers/net/fec_mpc52xx.c b/drivers/net/fec_mpc52xx.c
> > > index a8a0ee2..ddfcc0b 100644
> > > --- a/drivers/net/fec_mpc52xx.c
> > > +++ b/drivers/net/fec_mpc52xx.c
> > > @@ -422,7 +422,7 @@ static irqreturn_t mpc52xx_fec_rx_interrupt(int
> > > irq, void *dev_id)
> > >
> > > rskb = bcom_retrieve_buffer(priv->rx_dmatsk, &status,
> > > (struct bcom_bd **)&bd);
> > > - dma_unmap_single(&dev->dev, bd->skb_pa, skb->len,
> > > DMA_FROM_DEVICE);
> > > + dma_unmap_single(&dev->dev, bd->skb_pa, rskb->len,
> > > DMA_FROM_DEVICE);
> > >
> > > /* Test for errors in received frame */
> > > if (status & BCOM_FEC_RX_BD_ERRORS) {
> > > @@ -467,7 +467,7 @@ static irqreturn_t mpc52xx_fec_rx_interrupt(int
> > > irq, void *dev_id)
> > > bcom_prepare_next_buffer(priv->rx_dmatsk);
> > >
> > > bd->status = FEC_RX_BUFFER_SIZE;
> > > - bd->skb_pa = dma_map_single(&dev->dev, rskb->data,
> > > + bd->skb_pa = dma_map_single(&dev->dev, skb->data,
> > > FEC_RX_BUFFER_SIZE, DMA_FROM_DEVICE);
> > >
> > > bcom_submit_next_buffer(priv->rx_dmatsk, skb);
> > >
> > >
> > > --
> > > Jon Smirl
> > > [EMAIL PROTECTED]
> >
> > --
> > Domen Puncer | Research & Development
> > .............................................................................................
> > Telargo d.o.o. | Zagrebška cesta 20 | 2000 Maribor | Slovenia
> > .............................................................................................
> > www.telargo.com
> >
>
>
> --
> Grant Likely, B.Sc., P.Eng.
> Secret Lab Technologies Ltd.
> [EMAIL PROTECTED]
> (403) 399-0195
>
--
Jon Smirl
[EMAIL PROTECTED]
_______________________________________________
Linuxppc-dev mailing list
Linuxppc-dev@ozlabs.org
https://ozlabs.org/mailman/listinfo/linuxppc-dev
