linux-kernel - Re: [PATCH v2 2/2] intel_th: the number of masters should be (sw_end

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Message-ID: <CAG2=9p9=H93g0JipbvG8DT9NzkCAVrfNi9-5vW8COWtnKEGZDA@mail.gmail.com>
Date:	Thu, 28 Jan 2016 11:41:38 +0800
From:	Chunyan Zhang <zhang.chunyan@...aro.org>
To:	Alexander Shishkin <alexander.shishkin@...ux.intel.com>
Cc:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2 2/2] intel_th: the number of masters should be (sw_end
 - sw_start + 1)

Hi Alex,

Is there any problem on this patch, I noticed that you lost this patch
when you sent a patchset to Greg for 4.4 merge.

Thanks,
Chunyan

On Fri, Dec 11, 2015 at 6:48 PM, Chunyan Zhang <zhang.chunyan@...aro.org> wrote:
> sw_end represents the last software master, sw_start is index of the
> first master, so the number of software masters should be
> sw_end - sw_start + 1.
>
> Signed-off-by: Chunyan Zhang <zhang.chunyan@...aro.org>
> ---
>  drivers/hwtracing/intel_th/sth.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/hwtracing/intel_th/sth.c b/drivers/hwtracing/intel_th/sth.c
> index 56101c3..28917d7 100644
> --- a/drivers/hwtracing/intel_th/sth.c
> +++ b/drivers/hwtracing/intel_th/sth.c
> @@ -173,7 +173,7 @@ static int intel_th_sw_init(struct sth_device *sth)
>         sth->stm.sw_start = reg & 0xffff;
>         sth->stm.sw_end = reg >> 16;
>
> -       sth->sw_nmasters = sth->stm.sw_end - sth->stm.sw_start;
> +       sth->sw_nmasters = sth->stm.sw_end - sth->stm.sw_start + 1;
>         dev_dbg(sth->dev, "sw_start: %x sw_end: %x masters: %x nchannels: %x\n",
>                 sth->stm.sw_start, sth->stm.sw_end, sth->sw_nmasters,
>                 sth->stm.sw_nchannels);
> --
> 1.9.1
>