linux-kernel - Re: [PATCH v2 1/1] ucsi_ccg: Check DEV

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: <Yd2OTRrtP1XgxmHA@kroah.com>
Date:   Tue, 11 Jan 2022 15:03:57 +0100
From:   Greg KH <gregkh@...uxfoundation.org>
To:     Wayne Chang <waynec@...dia.com>
Cc:     heikki.krogerus@...ux.intel.com, linux-kernel@...r.kernel.org,
        linux-usb@...r.kernel.org, singhanc@...dia.com
Subject: Re: [PATCH v2 1/1] ucsi_ccg: Check DEV_INT bit only when starting
 CCG4

On Tue, Jan 11, 2022 at 09:36:43PM +0800, Wayne Chang wrote:
> From: Sing-Han Chen <singhanc@...dia.com>
> 
> after driver sending the UCSI_START cmd, CCGx would
> clear Bit 0:Device Interrupt in the INTR_REG if CCGX
> reset successfully.
> 
> however, there might be a chance that other bits in
> INTR_REG are not cleared due to internal data queued
> in PPM and cause the driver thinks CCGx reset failed.
> 
> the commit checks bit 0 in INTR_REG and ignore other
> bits. ucsi driver would reset PPM later.
> 
> Signed-off-by: Sing-Han Chen <singhanc@...dia.com>
> Signed-off-by: Wayne Chang <waynec@...dia.com>
> ---
>  drivers/usb/typec/ucsi/ucsi_ccg.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)

What commit id does this fix?

thanks,

greg k-h