From mboxrd@z Thu Jan 1 00:00:00 1970 From: Aviv Greenberg Subject: Re: Strange network timeouts w/ 2.6.30.5 Date: Sun, 23 Aug 2009 22:18:08 +0300 Message-ID: <20090823191808.GA29972@linux-gec2.site> References: <985009134.71250769263099.JavaMail.root@mail.holmansrus.com> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: QUOTED-PRINTABLE Cc: Walt Holman , David Miller , linux-kernel@vger.kernel.org, netdev@vger.kernel.org To: Krzysztof Halasa Return-path: Content-Disposition: inline In-Reply-To: Sender: linux-kernel-owner@vger.kernel.org List-Id: netdev.vger.kernel.org On Thu, Aug 20, 2009 at 03:45:21PM +0200, Krzysztof Halasa wrote: =20 > Signed-off-by: Krzysztof Ha=C5=82asa >=20 > diff --git a/drivers/net/e100.c b/drivers/net/e100.c > index 014dfb6..b610088 100644 > --- a/drivers/net/e100.c > +++ b/drivers/net/e100.c > @@ -1762,9 +1762,12 @@ static int e100_rx_indicate(struct nic *nic, s= truct rx *rx, > =20 > if (ioread8(&nic->csr->scb.status) & rus_no_res) > nic->ru_running =3D RU_SUSPENDED; > +#ifndef CONFIG_X86 > + /* FIXME interferes with swiotlb. */ > pci_dma_sync_single_for_device(nic->pdev, rx->dma_addr, > sizeof(struct rfd), > PCI_DMA_BIDIRECTIONAL); > +#endif > return -ENODATA; > } > =20 > --=20 Why do you use PCI_DMA_BIDIRECTIONAL? From what i get, the device write= s and the cpu reads - so the direction should be PCI_DMA_FROMDEVICE. Maybe just m= aybe the=20 bi-directionality bites you in the swiotlb case. > Krzysztof Halasa > -- > To unsubscribe from this list: send the line "unsubscribe linux-kerne= l" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/