mirrors/linux-stable
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git synced 2024-10-02 07:04:24 +00:00
Code Issues Releases Wiki Activity

thermal: int340x: delete bogus length check

Browse source 
This check has a signedness bug and does not work.  If "length" is
larger than "PAGE_SIZE" then "PAGE_SIZE - length" is not negative
but instead it is a large unsigned value.  Fortunately, Takashi Iwai
changed this code to use scnprint() instead of snprintf() so now
"length" is never larger than "PAGE_SIZE - 1" and the check can be
removed.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Dan Carpenter 2021-09-30 15:28:03 +03:00 committed by Rafael J. Wysocki
parent 9e1ff307c7
commit 52628a85dd
1 changed files with 4 additions and 5 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

9
drivers/thermal/intel/int340x_thermal/int3400_thermal.c
View file

@ -129,11 +129,10 @@ static ssize_t available_uuids_show(struct device *dev,
for (i = 0; i < INT3400_THERMAL_MAXIMUM_UUID; i++) {
if (priv->uuid_bitmap & (1 << i))
if (PAGE_SIZE - length > 0)
length += scnprintf(&buf[length],
PAGE_SIZE - length,
"%s\n",
int3400_thermal_uuids[i]);
length += scnprintf(&buf[length],
PAGE_SIZE - length,
"%s\n",
int3400_thermal_uuids[i]);
}
return length;