From: Oliver Neukum <oneukum@suse.com>
To: robert.foss@collabora.com
Cc: pprabhu@chromium.org, gregkh@linuxfoundation.org,
linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org
Subject: Re: [PACTH v1] cdc-wdm: Clear read pipeline in case of error
Date: Tue, 02 Aug 2016 14:23:15 +0200 [thread overview]
Message-ID: <1470140595.30985.20.camel@suse.com> (raw)
In-Reply-To: <1469729992-6228-1-git-send-email-robert.foss@collabora.com>
On Thu, 2016-07-28 at 14:19 -0400, robert.foss@collabora.com wrote:
> From: Prathmesh Prabhu <pprabhu@chromium.org>
>
> Implemented queued response handling. This queue is processed every
> time the
> WDM_READ flag is cleared.
>
> In case of a read error, userspace may not actually read the data,
> since the
> driver returns an error through wdm_poll. After this, the underlying
> device may
> attempt to send us more data, but the queue is not processed. While
> userspace is
> also blocked, because the read error is never cleared.
Could you explain why user space cannot just read more data?
That will clear the error.
Regards
Oliver
next prev parent reply other threads:[~2016-08-02 14:43 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-07-28 18:19 [PACTH v1] cdc-wdm: Clear read pipeline in case of error robert.foss
2016-08-02 12:23 ` Oliver Neukum [this message]
2016-08-02 13:54 ` Robert Foss
2016-08-02 13:59 ` Oliver Neukum
2016-08-02 14:37 ` Robert Foss
2016-08-03 10:39 ` Oliver Neukum
2016-08-04 17:44 ` Robert Foss
2016-08-07 8:59 ` Oliver Neukum
2016-08-08 14:38 ` Robert Foss
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