From: Oliver Neukum <oneukum@suse.com>
To: Hayes Wang <hayeswang@realtek.com>
Cc: netdev@vger.kernel.org, nic_swsd@realtek.com,
linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org
Subject: Re: [PATCH net 2/2] r8152: reset device when tx timeout
Date: Tue, 28 Jul 2015 10:56:39 +0200 [thread overview]
Message-ID: <1438073799.11934.4.camel@suse.com> (raw)
In-Reply-To: <1394712342-15778-158-Taiwan-albertk@realtek.com>
On Tue, 2015-07-28 at 15:36 +0800, Hayes Wang wrote:
> The device reset is necessary if the hw becomes abnormal and stops
> transmitting packets.
You are not the first one to face this problem. Hence there
is a helper:
* usb_queue_reset_device - Reset a USB device from an atomic context
* @iface: USB interface belonging to the device to reset
*
* This function can be used to reset a USB device from an atomic
* context, where usb_reset_device() won't work (as it blocks).
Please use it if you can. Your version for example is buggy.
It will oops if you unplug the device while a reset is scheduled.
Regards
Oliver
next prev parent reply other threads:[~2015-07-28 8:56 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-07-28 7:36 [PATCH net 0/2] r8152: device reset Hayes Wang
2015-07-28 7:36 ` [PATCH net 1/2] r8152: add pre_reset and post_reset Hayes Wang
2015-07-28 8:52 ` Oliver Neukum
[not found] ` <1438073562.11934.2.camel-IBi9RG/b67k@public.gmane.org>
2015-07-28 9:52 ` Hayes Wang
2015-07-28 12:05 ` Oliver Neukum
2015-07-28 7:36 ` [PATCH net 2/2] r8152: reset device when tx timeout Hayes Wang
2015-07-28 8:56 ` Oliver Neukum [this message]
2015-07-28 9:52 ` Hayes Wang
2015-07-28 12:08 ` [PATCH net v2 0/2] r8152: device reset Hayes Wang
2015-07-28 12:08 ` [PATCH net v2 1/2] r8152: add pre_reset and post_reset Hayes Wang
2015-07-28 12:08 ` [PATCH net v2 2/2] r8152: reset device when tx timeout Hayes Wang
2015-07-28 12:14 ` Oliver Neukum
2015-07-28 12:31 ` Hayes Wang
2015-07-28 12:58 ` Oliver Neukum
2015-07-29 2:06 ` Hayes Wang
2015-07-29 7:22 ` Oliver Neukum
2015-07-29 11:09 ` Hayes Wang
2015-07-29 12:39 ` [PATCH net v3 0/2] r8152: device reset Hayes Wang
2015-07-29 12:39 ` [PATCH net v3 1/2] r8152: add pre_reset and post_reset Hayes Wang
2015-07-29 12:39 ` [PATCH net v3 2/2] r8152: reset device when tx timeout Hayes Wang
2015-07-30 21:04 ` [PATCH net v3 0/2] r8152: device reset David Miller
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1438073799.11934.4.camel@suse.com \
--to=oneukum@suse.com \
--cc=hayeswang@realtek.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-usb@vger.kernel.org \
--cc=netdev@vger.kernel.org \
--cc=nic_swsd@realtek.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).