[dpdk-dev] [PATCH] igb_uio: remove device reset in open
Gregory Etelson
gregory at weka.io
Fri Oct 20 21:01:41 CEST 2017
On Friday, 20 October 2017 19:57:38 IDT Ferruh Yigit wrote:
> On 10/20/2017 9:55 AM, Ferruh Yigit wrote:
> > Remove device reset during application start, the reset for application
> > exit still there.
> >
> > Reset in open removed because of following comments:
> > 1- Device reset not completed when VF driver loaded, which cause VF PMD
> >
> > initialization error.
> > Adding delay can solve the issue but will increase driver load time.
> >
> > 2- Reset will be issues all devices unconditionally, not very efficient
> >
> > way.
> >
> > Fixes: b58eedfc7dd5 ("igb_uio: issue FLR during open and release of device
> > file") Cc: stable at dpdk.org
> >
> > Signed-off-by: Ferruh Yigit <ferruh.yigit at intel.com>
>
> Hi Jingjing, Shijith, Gregory, Harish,
>
> Can you please test this on top of current master (which has already
> Jingjin's fix) ?
>
> Thanks,
> ferruh
>
sure.
> > ---
> > Cc: Jianfeng Tan <jianfeng.tan at intel.com>
> > Cc: Jingjing Wu <jingjing.wu at intel.com>
> > Cc: Shijith Thotton <shijith.thotton at caviumnetworks.com>
> > Cc: Gregory Etelson <gregory at weka.io>
> > Cc: Harish Patil <harish.patil at cavium.com>
> > Cc: George Prekas <george.prekas at epfl.ch>
> > Cc: Sergio Gonzalez Monroy <sergio.gonzalez.monroy at intel.com>
> > ---
> >
> > lib/librte_eal/linuxapp/igb_uio/igb_uio.c | 2 --
> > 1 file changed, 2 deletions(-)
> >
> > diff --git a/lib/librte_eal/linuxapp/igb_uio/igb_uio.c
> > b/lib/librte_eal/linuxapp/igb_uio/igb_uio.c index f7ef82554..fd320d87d
> > 100644
> > --- a/lib/librte_eal/linuxapp/igb_uio/igb_uio.c
> > +++ b/lib/librte_eal/linuxapp/igb_uio/igb_uio.c
> > @@ -336,8 +336,6 @@ igbuio_pci_open(struct uio_info *info, struct inode
> > *inode)>
> > struct pci_dev *dev = udev->pdev;
> > int err;
> >
> > - pci_reset_function(dev);
> > -
> >
> > /* set bus master, which was cleared by the reset function */
> > pci_set_master(dev);
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