[dpdk-dev] [PATCH] igb_uio: remove device reset in open

Ferruh Yigit ferruh.yigit at intel.com
Fri Oct 20 18:57:38 CEST 2017


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

> ---
> 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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