Re: [PATCH 5/5] staging: tidspbridge: check the return value of kstrtol

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On Fri, Jun 29, 2012 at 01:49:21PM -0500, Omar Ramirez Luna wrote:
> And silence the following warning:
> 
> drivers/staging/tidspbridge/pmgr/dbll.c:
>     In function 'dbll_rmm_alloc':
> drivers/staging/tidspbridge/pmgr/dbll.c:1124:
>     warning: ignoring return value of 'kstrtol',
>     declared with attribute warn_unused_result
> 
> Since the code is using strict_strol it was replaced for kstrtol
> as the former is obsolete now.
> 
> Signed-off-by: Omar Ramirez Luna <omar.ramirez@xxxxxxxxxx>
> ---
>  drivers/staging/tidspbridge/pmgr/dbll.c |    7 +++++--
>  1 files changed, 5 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/staging/tidspbridge/pmgr/dbll.c b/drivers/staging/tidspbridge/pmgr/dbll.c
> index 9f07036..3858aa1 100644
> --- a/drivers/staging/tidspbridge/pmgr/dbll.c
> +++ b/drivers/staging/tidspbridge/pmgr/dbll.c
> @@ -1120,8 +1120,11 @@ static int dbll_rmm_alloc(struct dynamic_loader_allocate *this,
>  	   or DYN_EXTERNAL, then mem granularity information is present
>  	   within the section name - only process if there are at least three
>  	   tokens within the section name (just a minor optimization) */
> -	if (count >= 3)
> -		strict_strtol(sz_last_token, 10, (long *)&req);
> +	if (count >= 3) {
> +		ret = kstrtol(sz_last_token, 10, (long *)&req);

req is an s32 so this will corrupt memory on a 64 bit system.  One
option would be to use.
		ret = kstrtos32(sz_last_token, 10, &req);
But maybe a better option might be to change the type of "req" to
some more normal C type if there isn't a specific reason for it to
be s32.

regards,
dan carpenter

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