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| author | Armin Wolf <W_Armin@gmx.de> | 2023-09-07 08:26:37 +0300 |
|---|---|---|
| committer | Guenter Roeck <linux@roeck-us.net> | 2023-10-27 17:27:24 +0300 |
| commit | a54fe61639d9f3b6765fee32edda7cfceb6d705a (patch) | |
| tree | 9709cc7d9bec857e1cfdfc4f1a422ce0906078c0 /lib/crypto/mpi/mpiutil.c | |
| parent | 7da8a635436029957c5350da3acf51d78ed64071 (diff) | |
| download | linux-a54fe61639d9f3b6765fee32edda7cfceb6d705a.tar.xz | |
hwmon: (sch5627) Use regmap for pwm map register caching
Accessing virtual registers is very inefficient, so pwm map values
should be cached when possible, else userspace could effectively do
a DOS attack by reading pwm map values in a while loop.
Use the regmap cache to cache those values.
Tested on a Fujitsu Esprimo P720.
Signed-off-by: Armin Wolf <W_Armin@gmx.de>
Link: https://lore.kernel.org/r/20230907052639.16491-4-W_Armin@gmx.de
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Diffstat (limited to 'lib/crypto/mpi/mpiutil.c')
0 files changed, 0 insertions, 0 deletions