diff options
| author | Chunyan Zhang <zhang.chunyan@linaro.org> | 2016-03-28 15:55:42 +0800 |
|---|---|---|
| committer | Alexander Shishkin <alexander.shishkin@linux.intel.com> | 2016-04-08 16:08:00 +0300 |
| commit | f57af6df6af23c086cfe023896822200eee48dd1 (patch) | |
| tree | ae00b00985d7547b8d1cdb30397d0ac14d793d5c /drivers/hwtracing/stm | |
| parent | e787bc463cc1fe3f51b0cd7bf540236318f69cf1 (diff) | |
stm class: Fix integer boundary checks for master range
Master IDs are of unsigned int type, yet in the configfs policy code
we're validating user's input against INT_MAX. This is both pointless
and misleading as the real limits are imposed by the stm device's
[sw_start..sw_end] (which are also limited by the spec to be no larger
than 2^16-1).
Clean this up by getting rid of the redundant comparisons.
Signed-off-by: Chunyan Zhang <zhang.chunyan@linaro.org>
Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Reviewed-by: Laurent Fert <laurent.fert@intel.com>
Diffstat (limited to 'drivers/hwtracing/stm')
| -rw-r--r-- | drivers/hwtracing/stm/policy.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/drivers/hwtracing/stm/policy.c b/drivers/hwtracing/stm/policy.c index 1db189657b2b..e8b50b1ac619 100644 --- a/drivers/hwtracing/stm/policy.c +++ b/drivers/hwtracing/stm/policy.c @@ -107,8 +107,7 @@ stp_policy_node_masters_store(struct config_item *item, const char *page, goto unlock; /* must be within [sw_start..sw_end], which is an inclusive range */ - if (first > INT_MAX || last > INT_MAX || first > last || - first < stm->data->sw_start || + if (first > last || first < stm->data->sw_start || last > stm->data->sw_end) { ret = -ERANGE; goto unlock; |