linux-kernel - Re: [PATCH V2 1/4] USB: serial: f81232: clear overrun flag

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20180905143933.GC1089@localhost>
Date:   Wed, 5 Sep 2018 16:39:33 +0200
From:   Johan Hovold <johan@...nel.org>
To:     "Ji-Ze Hong (Peter Hong)" <hpeter@...il.com>
Cc:     johan@...nel.org, gregkh@...uxfoundation.org,
        linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org,
        peter_hong@...tek.com.tw, hpeter+linux_kernel@...il.com,
        Oliver Neukum <oneukum@...e.com>
Subject: Re: [PATCH V2 1/4] USB: serial: f81232: clear overrun flag

On Thu, Aug 30, 2018 at 09:47:10AM +0800, Ji-Ze Hong (Peter Hong) wrote:
> The F81232 will report data and LSR with bulk like following format:
> bulk-in data: [LSR(1Byte)+DATA(1Byte)][LSR(1Byte)+DATA(1Byte)]...
> 
> LSR will auto clear frame/parity/break error flag when reading by H/W,
> but overrrun will only cleared when reading LSR. So this patch add a
> worker to read LSR when OE.
> 
> Cc: Oliver Neukum <oneukum@...e.com>
> Signed-off-by: Ji-Ze Hong (Peter Hong) <hpeter+linux_kernel@...il.com>
> ---
> v2:
>         1: Add flush_work(&port_priv->lsr_work) in f81232_close().
>            Thanks for notice by Oliver Neukum

Looks like you ignored Oliver's comment that you needed to take care of
any pending lsr work both and close and suspend.

Johan