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Date:   Mon, 20 May 2019 13:49:38 +0800
From:   Zhangshaokun <zhangshaokun@...ilicon.com>
To:     <linux-kernel@...r.kernel.org>
CC:     Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        "Greg Kroah-Hartman" <gregkh@...uxfoundation.org>
Subject: Re: [PATCH] intel_th: msu: Fix unused variable warning on arm64
 platform

please ignore this patch, I will update it and resend it.

On 2019/5/20 11:23, Shaokun Zhang wrote:
> Fix this compiler warning on arm64 platform.
> 
> Cc: Alexander Shishkin <alexander.shishkin@...ux.intel.com>
> Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
> Signed-off-by: Shaokun Zhang <zhangshaokun@...ilicon.com>
> ---
>  drivers/hwtracing/intel_th/msu.c | 8 +++-----
>  1 file changed, 3 insertions(+), 5 deletions(-)
> 
> diff --git a/drivers/hwtracing/intel_th/msu.c b/drivers/hwtracing/intel_th/msu.c
> index 81bb54fa3ce8..e15ed5c308e1 100644
> --- a/drivers/hwtracing/intel_th/msu.c
> +++ b/drivers/hwtracing/intel_th/msu.c
> @@ -780,7 +780,7 @@ static int __msc_buffer_win_alloc(struct msc_window *win,
>  static int msc_buffer_win_alloc(struct msc *msc, unsigned int nr_blocks)
>  {
>  	struct msc_window *win;
> -	int ret = -ENOMEM, i;
> +	int ret = -ENOMEM;
>  
>  	if (!nr_blocks)
>  		return 0;
> @@ -812,7 +812,7 @@ static int msc_buffer_win_alloc(struct msc *msc, unsigned int nr_blocks)
>  		goto err_nomem;
>  
>  #ifdef CONFIG_X86
> -	for (i = 0; i < ret; i++)
> +	for (int i = 0; i < ret; i++)
>  		/* Set the page as uncached */
>  		set_memory_uc((unsigned long)msc_win_block(win, i), 1);
>  #endif
> @@ -860,8 +860,6 @@ static void __msc_buffer_win_free(struct msc *msc, struct msc_window *win)
>   */
>  static void msc_buffer_win_free(struct msc *msc, struct msc_window *win)
>  {
> -	int i;
> -
>  	msc->nr_pages -= win->nr_blocks;
>  
>  	list_del(&win->entry);
> @@ -871,7 +869,7 @@ static void msc_buffer_win_free(struct msc *msc, struct msc_window *win)
>  	}
>  
>  #ifdef CONFIG_X86
> -	for (i = 0; i < win->nr_blocks; i++)
> +	for (int i = 0; i < win->nr_blocks; i++)
>  		/* Reset the page to write-back */
>  		set_memory_wb((unsigned long)msc_win_block(win, i), 1);
>  #endif
> 

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