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| author | Enric Balletbo i Serra <enric.balletbo@collabora.com> | 2018-07-04 11:45:50 +0300 |
|---|---|---|
| committer | MyungJoo Ham <myungjoo.ham@samsung.com> | 2018-10-02 04:16:41 +0300 |
| commit | 23c7b54ca1cd1797ef39169ab85e6d46f1c2d061 (patch) | |
| tree | c04d424c2507228ea6cffb310f9b50b6b738296e /drivers/devfreq/governor_simpleondemand.c | |
| parent | 17b57b1883c1285f3d0dc2266e8f79286a7bef38 (diff) | |
| download | linux-23c7b54ca1cd1797ef39169ab85e6d46f1c2d061.tar.xz | |
PM / devfreq: Fix devfreq_add_device() when drivers are built as modules.
When the devfreq driver and the governor driver are built as modules,
the call to devfreq_add_device() or governor_store() fails because the
governor driver is not loaded at the time the devfreq driver loads. The
devfreq driver has a build dependency on the governor but also should
have a runtime dependency. We need to make sure that the governor driver
is loaded before the devfreq driver.
This patch fixes this bug by adding a try_then_request_governor()
function. First tries to find the governor, and then, if it is not found,
it requests the module and tries again.
Fixes: 1b5c1be2c88e (PM / devfreq: map devfreq drivers to governor using name)
Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Reviewed-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: MyungJoo Ham <myungjoo.ham@samsung.com>
Diffstat (limited to 'drivers/devfreq/governor_simpleondemand.c')
0 files changed, 0 insertions, 0 deletions