On Wed, 19 Apr 2017, Vikas Shivappa wrote:

> Schemata is displayed in tabular format which introduces some whitespace
> to show data in a tabular format. If user wants to input the same data
> that is displayed, the parsing fails. Trim the leading and trailing
> whitespace to help parse such data.
> 
> Reported-by: Prakhya, Sai Praneeth <[email protected]>
> Signed-off-by: Vikas Shivappa <[email protected]>
> Tested-by: Prakhya, Sai Praneeth <[email protected]>
> ---
>  arch/x86/kernel/cpu/intel_rdt_schemata.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/arch/x86/kernel/cpu/intel_rdt_schemata.c 
> b/arch/x86/kernel/cpu/intel_rdt_schemata.c
> index 9467a00..3cfa1ca 100644
> --- a/arch/x86/kernel/cpu/intel_rdt_schemata.c
> +++ b/arch/x86/kernel/cpu/intel_rdt_schemata.c
> @@ -143,7 +143,7 @@ static int parse_line(char *line, struct rdt_resource *r)
>               return -EINVAL;
>       list_for_each_entry(d, &r->domains, list) {
>               if (d->id == dom_id) {
> -                     if (r->parse_ctrlval(dom, r, d))
> +                     if (r->parse_ctrlval(strim(dom), r, d))
>                               return -EINVAL;
>                       goto next;
>               }
> @@ -220,7 +220,7 @@ ssize_t rdtgroup_schemata_write(struct kernfs_open_file 
> *of,
>                       goto out;
>               }
>               for_each_enabled_rdt_resource(r) {
> -                     if (!strcmp(resname, r->name) &&
> +                     if (!strcmp(strim(resname), r->name) &&

Both strims() invocations are just silly. They can be done before the loop
once instead of doing them over and over again.

Thanks,

        tglx

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