From: "Bjørn Mork" <bjorn-yOkvZcmFvRU@public•gmane.org>
To: Ming Lei <ming.lei-Z7WLFzj8eWMS+FvcfC7Uqw@public•gmane.org>
Cc: "David S. Miller" <davem-fT/PcQaiUtIeIZ0/mPfg9Q@public•gmane.org>,
Greg Kroah-Hartman
<gregkh-hQyY1W1yCW8ekmWlsbkhG0B+6BGkLq7r@public•gmane.org>,
Jiri Kosina <jkosina-AlSwsSmVLrQ@public•gmane.org>,
Alan Stern
<stern-nwvwT67g6+6dFdvTe/nMLpVzexx5G7lz@public•gmane.org>,
Oliver Neukum <oneukum-l3A5Bk7waGM@public•gmane.org>,
netdev-u79uwXL29TY76Z2rM5mHXA@public•gmane.org,
linux-usb-u79uwXL29TY76Z2rM5mHXA@public•gmane.org,
linux-input-u79uwXL29TY76Z2rM5mHXA@public•gmane.org
Subject: Re: [PATCH 7/7] usbnet: qmi_wwan: don't recover device if suspend fails in system sleep
Date: Tue, 05 Mar 2013 08:09:35 +0100 [thread overview]
Message-ID: <877glmqq4w.fsf@nemi.mork.no> (raw)
In-Reply-To: <1362456103-24956-8-git-send-email-ming.lei-Z7WLFzj8eWMS+FvcfC7Uqw@public.gmane.org> (Ming Lei's message of "Tue, 5 Mar 2013 12:01:43 +0800")
Ming Lei <ming.lei-Z7WLFzj8eWMS+FvcfC7Uqw@public•gmane.org> writes:
> If suspend callback fails in system sleep context, usb core will
> ignore the failure and let system sleep go ahead further, so
> this patch doesn't recover device under this situation.
>
> Cc: Bjørn Mork <bjorn-yOkvZcmFvRU@public•gmane.org>
> Signed-off-by: Ming Lei <ming.lei-Z7WLFzj8eWMS+FvcfC7Uqw@public•gmane.org>
> ---
> drivers/net/usb/qmi_wwan.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/net/usb/qmi_wwan.c b/drivers/net/usb/qmi_wwan.c
> index efb5c7c..fce18be 100644
> --- a/drivers/net/usb/qmi_wwan.c
> +++ b/drivers/net/usb/qmi_wwan.c
> @@ -294,7 +294,7 @@ static int qmi_wwan_suspend(struct usb_interface *intf, pm_message_t message)
>
> if (intf == info->control && info->subdriver && info->subdriver->suspend)
> ret = info->subdriver->suspend(intf, message);
> - if (ret < 0)
> + if (ret < 0 && PMSG_IS_AUTO(msg))
> usbnet_resume(intf);
> err:
> return ret;
NAK. We if the device cannot suspend, then it cannot do suspend halfways
either. Whether the caller will ignore the error or not, is irrelevant.
Bjørn
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next prev parent reply other threads:[~2013-03-05 7:09 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-03-05 4:01 [PATCH 0/7] USB: don't recover device if suspend fails in system sleep Ming Lei
2013-03-05 4:01 ` [PATCH 1/7] USB: adds comment on suspend callback Ming Lei
2013-03-05 13:16 ` Ming Lei
[not found] ` <1362456103-24956-1-git-send-email-ming.lei-Z7WLFzj8eWMS+FvcfC7Uqw@public.gmane.org>
2013-03-05 4:01 ` [PATCH 2/7] USB: serial: handle suspend failure path correctly Ming Lei
2013-03-05 4:01 ` [PATCH 3/7] USBHID: don't recover device if suspend fails in system sleep Ming Lei
2013-03-05 4:01 ` [PATCH 4/7] usbnet: cdc_mbim: " Ming Lei
[not found] ` <1362456103-24956-5-git-send-email-ming.lei-Z7WLFzj8eWMS+FvcfC7Uqw@public.gmane.org>
2013-03-05 7:09 ` Bjørn Mork
2013-03-05 11:07 ` Ming Lei
2013-03-05 13:46 ` Bjørn Mork
2013-03-05 14:50 ` Ming Lei
2013-03-05 15:03 ` Bjørn Mork
2013-03-05 15:29 ` Ming Lei
2013-03-05 16:08 ` Bjørn Mork
[not found] ` <87wqtlommw.fsf-lbf33ChDnrE/G1V5fR+Y7Q@public.gmane.org>
2013-03-05 16:54 ` Alan Stern
2013-03-05 17:35 ` Bjørn Mork
2013-03-06 2:51 ` Ming Lei
2013-03-06 3:03 ` Ming Lei
[not found] ` <CACVXFVN=i10cVS3RQ7jGrJAfsC+r2t61z7XOVKWMAMqKKELZCg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2013-03-06 7:06 ` Bjørn Mork
2013-03-06 7:50 ` Ming Lei
2013-03-06 8:32 ` Bjørn Mork
2013-03-05 4:01 ` [PATCH 5/7] usbnet: smsc95xx: " Ming Lei
2013-03-05 4:01 ` [PATCH 6/7] usbnet: smsc75xx: " Ming Lei
2013-03-05 4:01 ` [PATCH 7/7] usbnet: qmi_wwan: " Ming Lei
[not found] ` <1362456103-24956-8-git-send-email-ming.lei-Z7WLFzj8eWMS+FvcfC7Uqw@public.gmane.org>
2013-03-05 7:09 ` Bjørn Mork [this message]
2013-03-05 12:27 ` Ming Lei
2013-03-05 5:14 ` [PATCH 0/7] USB: " Ming Lei
2013-03-05 7:03 ` Bjørn Mork
2013-03-05 10:55 ` Ming Lei
2013-03-05 12:50 ` Oliver Neukum
[not found] ` <3703451.5FViJ58GpZ-7ztolUikljGernLeA6q8OA@public.gmane.org>
2013-03-05 13:08 ` Ming Lei
2013-03-05 13:28 ` Oliver Neukum
2013-03-05 14:03 ` Ming Lei
2013-03-05 13:18 ` Bjørn Mork
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