RE: [PATCH v2] raw/ntb: add check for disabling interrupt in dev close ops

["Ling, WeiX" <weix.ling@intel.com>]

> -----Original Message-----
> From: Junfeng Guo <junfeng.guo@intel.com>
> Sent: Wednesday, June 28, 2023 5:12 PM
> To: Wu, Jingjing <jingjing.wu@intel.com>
> Cc: dev@dpdk.org; stable@dpdk.org; He, Xingguang
> <xingguang.he@intel.com>; Laatz, Kevin <kevin.laatz@intel.com>; Guo,
> Junfeng <junfeng.guo@intel.com>
> Subject: [PATCH v2] raw/ntb: add check for disabling interrupt in dev close
> ops
> 
> During EAL cleanup stage, all bus devices are cleaned up properly.
> In the meantime, the ntb example app will also do the device cleanup
> process, which may call the dev ops '*dev->dev_ops->dev_close' twice.
> 
> If this dev ops for ntb was called twice, the interrupt handle for EAL will be
> disabled twice and will lead to error for the seconde time. Like this: "EAL:
> Error disabling MSI-X interrupts for fd xx"
> 
> Thus, this patch added the check process for disabling interrupt in dev_close
> ops, to ensure that interrupt only be disabled once.
> 
> Fixes: 1cab1a40ea9b ("bus: cleanup devices on shutdown")
> Cc: stable@dpdk.org
> 
> Signed-off-by: Junfeng Guo <junfeng.guo@intel.com>
> ---
>  drivers/raw/ntb/ntb.c | 5 +++++
>  1 file changed, 5 insertions(+)
> 

Tested-by: Wei Ling <weix.ling@intel.com>