[PATCH] vmbus: re-enable tasklet
Stephen Hemminger
stephen at networkplumber.org
Thu Jun 29 23:31:20 UTC 2017
On Thu, 22 Jun 2017 16:16:54 -0700
Stephen Hemminger <stephen at networkplumber.org> wrote:
> This problem shows up in 4.11 when netvsc driver is removed and reloaded.
> The problem is that the channel is closed during module removal and the
> tasklet for processing responses is disabled. When module is reloaded
> the channel is reopened but the tasklet is marked as disabled.
>
> Patch for upstream is pending, but less urgent since problem doesn't
> happen with network driver in 4.12.
>
> Signed-off-by: Stephen Hemminger <sthemmin at microsoft.com>
> ---
> drivers/hv/channel.c | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/drivers/hv/channel.c b/drivers/hv/channel.c
> index 321b8833fa6f..36c9ce191b74 100644
> --- a/drivers/hv/channel.c
> +++ b/drivers/hv/channel.c
> @@ -606,6 +606,8 @@ static int vmbus_close_internal(struct vmbus_channel *channel)
> get_order(channel->ringbuffer_pagecount * PAGE_SIZE));
>
> out:
> + /* re-enable tasklet for use on re-open */
> + tasklet_enable(&channel->callback_event);
> return ret;
> }
>
Ping.
What is the state of this patch? Why is it not queued for 4.11 stable?
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