Re: [PATCH 1/3] wl1251: fix TSF calculation

[Guido Gavilanes <gavilanes@ismb.it>]

Hello all,

Regarding the TSF, is there a way to read from an outside program the
TSF to help stations or programs have a "synchronization" low level
reference time?

Any ideas would be appreciated!
Thank you!
Guido

On Sat, 2012-06-16 at 22:26 +0300, Grazvydas Ignotas wrote:
> Cast MSB part of current TSF to u64 to prevent loss of most
> significant bits. MSB should also be shifted by 32.
> 
> Patch based on old maemo patch by:
> Yuri Kululin <ext-yuri.kululin@nokia.com>
> Yuri Ershov <ext-yuri.ershov@nokia.com>
> 
> Signed-off-by: Grazvydas Ignotas <notasas@gmail.com>
> ---
>  drivers/net/wireless/ti/wl1251/acx.c |    2 +-
>  1 files changed, 1 insertions(+), 1 deletions(-)
> 
> diff --git a/drivers/net/wireless/ti/wl1251/acx.c b/drivers/net/wireless/ti/wl1251/acx.c
> index ad87a1a..db6430c 100644
> --- a/drivers/net/wireless/ti/wl1251/acx.c
> +++ b/drivers/net/wireless/ti/wl1251/acx.c
> @@ -869,7 +869,7 @@ int wl1251_acx_tsf_info(struct wl1251 *wl, u64 *mactime)
>  	}
>  
>  	*mactime = tsf_info->current_tsf_lsb |
> -		(tsf_info->current_tsf_msb << 31);
> +		((u64)tsf_info->current_tsf_msb << 32);
>  
>  out:
>  	kfree(tsf_info);