Re: [PATCH v2 1/3] hv: hv_util: move vmbus_open() to a later place

[Jason Wang]

On Mon, Feb 2, 2015 at 12:35 PM, Dexuan Cui <decui@xxxxxxxxxxxxx> wrote:
> Before the line vmbus_open() returns, srv->util_cb can be already 
> running
> and the variables, like util_fw_version, are needed by the 
> srv->util_cb.
>
> So we have to make sure the variables are initialized before the 
> vmbus_open().
>
> CC: "K. Y. Srinivasan" <kys@xxxxxxxxxxxxx>
> Reviewed-by: Vitaly Kuznetsov <vkuznets@xxxxxxxxxx>
> Signed-off-by: Dexuan Cui <decui@xxxxxxxxxxxxx>
> ---
>
> v2:
> This is a RESEND.
> I just added Vitaly's Reviewed-by.
>
>  drivers/hv/hv_util.c | 11 ++++++-----
>  1 file changed, 6 insertions(+), 5 deletions(-)
>
> diff --git a/drivers/hv/hv_util.c b/drivers/hv/hv_util.c
> index 3b9c9ef..c5be773 100644
> --- a/drivers/hv/hv_util.c
> +++ b/drivers/hv/hv_util.c
> @@ -340,12 +340,8 @@ static int util_probe(struct hv_device *dev,
>  
>  	set_channel_read_state(dev->channel, false);
>  
> -	ret = vmbus_open(dev->channel, 4 * PAGE_SIZE, 4 * PAGE_SIZE, NULL, 
> 0,
> -			srv->util_cb, dev->channel);
> -	if (ret)
> -		goto error;
> -
>  	hv_set_drvdata(dev, srv);
> +
>  	/*
>  	 * Based on the host; initialize the framework and
>  	 * service version numbers we will negotiate.
> @@ -365,6 +361,11 @@ static int util_probe(struct hv_device *dev,
>  		hb_srv_version = HB_VERSION;
>  	}
>  
> +	ret = vmbus_open(dev->channel, 4 * PAGE_SIZE, 4 * PAGE_SIZE, NULL, 
> 0,
> +			srv->util_cb, dev->channel);
> +	if (ret)
> +		goto error;
> +
>  	return 0;
>  
>  error:
> --
> 1.9.1

Reviewed-by: Jason Wang <jasowang@xxxxxxxxxx>

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