linux-kernel - Re: [PATCH V6 1/3] 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: <1554287791.20869.6.camel@suse.com>
Date:   Wed, 03 Apr 2019 12:36:31 +0200
From:   Oliver Neukum <oneukum@...e.com>
To:     "Ji-Ze Hong (Peter Hong)" <hpeter@...il.com>,
        peter_hong@...tek.com.tw, johan@...nel.org,
        gregkh@...uxfoundation.org
Cc:     "Ji-Ze Hong (Peter Hong)" <hpeter+linux_kernel@...il.com>,
        linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org
Subject: Re: [PATCH V6 1/3] USB: serial: f81232: clear overrun flag

On Mi, 2019-04-03 at 16:40 +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 overrun and flush the worker on close() &
> suspend().
> 
> Cc: Oliver Neukum <oneukum@...e.com>
> Signed-off-by: Ji-Ze Hong (Peter Hong) <hpeter+linux_kernel@...il.com>
Reviewed-by: Oliver Neukum <oneukum@...e.com>