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x86/intel_rdt: Trim whitespace while parsing schemata input

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Schemata is displayed in tabular format which introduces some whitespace
to show data in a tabular format.

Writing back the same data fails as the parser does not handle the
whitespace.

Trim the leading and trailing whitespace before parsing.

Reported-by: Prakhya, Sai Praneeth <sai.praneeth.prakhya@intel.com>
Signed-off-by: Vikas Shivappa <vikas.shivappa@linux.intel.com>
Tested-by: Prakhya, Sai Praneeth <sai.praneeth.prakhya@intel.com>
Cc: fenghua.yu@intel.com
Cc: tony.luck@intel.com
Cc: ravi.v.shankar@intel.com
Cc: vikas.shivappa@intel.com
Link: http://lkml.kernel.org/r/1492645804-17465-3-git-send-email-vikas.shivappa@linux.intel.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Vikas Shivappa 2017-04-19 16:50:03 -07:00 committed by Thomas Gleixner
parent adcbdd7030
commit 634b0e0491
1 changed files with 2 additions and 1 deletions
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3
arch/x86/kernel/cpu/intel_rdt_schemata.c
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@ -141,6 +141,7 @@ static int parse_line(char *line, struct rdt_resource *r)
id = strsep(&dom, "=");
if (!dom || kstrtoul(id, 10, &dom_id))
return -EINVAL;
dom = strim(dom);
list_for_each_entry(d, &r->domains, list) {
if (d->id == dom_id) {
if (r->parse_ctrlval(dom, r, d))
@ -214,7 +215,7 @@ ssize_t rdtgroup_schemata_write(struct kernfs_open_file *of,
dom->have_new_ctrl = false;
while ((tok = strsep(&buf, "\n")) != NULL) {
resname = strsep(&tok, ":");
resname = strim(strsep(&tok, ":"));
if (!tok) {
ret = -EINVAL;
goto out;