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: <Znfznzd6Mt55XsmN@kekkonen.localdomain>
Date: Sun, 23 Jun 2024 10:06:23 +0000
From: Sakari Ailus <sakari.ailus@...ux.intel.com>
To: Wentong Wu <wentong.wu@...el.com>
Cc: tomas.winkler@...el.com, gregkh@...uxfoundation.org,
	linux-kernel@...r.kernel.org, stable@...r.kernel.org,
	Jason Chen <jason.z.chen@...el.com>
Subject: Re: [PATCH 1/6] mei: vsc: Enhance IVSC chipset reset toggling

Hi Wentong,

Thanks for the set.

On Sun, Jun 23, 2024 at 05:30:51PM +0800, Wentong Wu wrote:
> Implementing the hardware recommendation to toggle the chipset reset.
> 
> Fixes: 566f5ca97680 ("mei: Add transport driver for IVSC device")
> Cc: stable@...r.kernel.org # for 6.8+
> Signed-off-by: Wentong Wu <wentong.wu@...el.com>
> Tested-by: Jason Chen <jason.z.chen@...el.com>
> ---
>  drivers/misc/mei/vsc-tp.c | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/drivers/misc/mei/vsc-tp.c b/drivers/misc/mei/vsc-tp.c
> index e6a98dba8a73..dcab5174bf00 100644
> --- a/drivers/misc/mei/vsc-tp.c
> +++ b/drivers/misc/mei/vsc-tp.c
> @@ -350,6 +350,8 @@ void vsc_tp_reset(struct vsc_tp *tp)
>  	disable_irq(tp->spi->irq);
>  
>  	/* toggle reset pin */
> +	gpiod_set_value_cansleep(tp->resetfw, 1);
> +	msleep(VSC_TP_RESET_PIN_TOGGLE_INTERVAL_MS);
>  	gpiod_set_value_cansleep(tp->resetfw, 0);
>  	msleep(VSC_TP_RESET_PIN_TOGGLE_INTERVAL_MS);
>  	gpiod_set_value_cansleep(tp->resetfw, 1);

Looking at the patch, the driver appears to leave the reset signal enabled.
As it currently works, also the polarity appears to be wrong.

Could you addrss this, after this patch?

-- 
Kind regards,

Sakari Ailus

Powered by blists - more mailing lists

Powered by Openwall GNU/*/Linux Powered by OpenVZ