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| author | Armin Wolf <W_Armin@gmx.de> | 2021-10-21 22:05:31 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-02-16 14:54:30 +0300 |
| commit | ad53060bdfc34bb2fcc5bfff8a6f56bd425b964a (patch) | |
| tree | 6ead1209cc2f8114db71fbf6ffa4e6d7b4b6a878 /scripts | |
| parent | 3c75d1017cb362b6a4e0935746ef5da28250919f (diff) | |
| download | linux-ad53060bdfc34bb2fcc5bfff8a6f56bd425b964a.tar.xz | |
hwmon: (dell-smm) Speed up setting of fan speed
commit c0d79987a0d82671bff374c07f2201f9bdf4aaa2 upstream.
When setting the fan speed, i8k_set_fan() calls i8k_get_fan_status(),
causing an unnecessary SMM call since from the two users of this
function, only i8k_ioctl_unlocked() needs to know the new fan status
while dell_smm_write() ignores the new fan status.
Since SMM calls can be very slow while also making error reporting
difficult for dell_smm_write(), remove the function call from
i8k_set_fan() and call it separately in i8k_ioctl_unlocked().
Tested on a Dell Inspiron 3505.
Signed-off-by: Armin Wolf <W_Armin@gmx.de>
Reviewed-by: Pali Rohár <pali@kernel.org>
Link: https://lore.kernel.org/r/20211021190531.17379-6-W_Armin@gmx.de
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'scripts')
0 files changed, 0 insertions, 0 deletions