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| author | Kai-Heng Feng <kai.heng.feng@canonical.com> | 2021-04-30 14:07:35 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-06-03 08:59:08 +0200 |
| commit | e0c7f6cce1cf4d4f8821c067b54e284126826c47 (patch) | |
| tree | bb2a331dd94f8803721943d3fd259637c71d82ab /drivers/misc | |
| parent | bd7a3b3ed9e35ba1057fd9f3a308cc56576d47a5 (diff) | |
| download | linux-e0c7f6cce1cf4d4f8821c067b54e284126826c47.tar.gz linux-e0c7f6cce1cf4d4f8821c067b54e284126826c47.tar.bz2 linux-e0c7f6cce1cf4d4f8821c067b54e284126826c47.zip | |
platform/x86: hp_accel: Avoid invoking _INI to speed up resume
[ Upstream commit 79d341e26ebcdbc622348aaaab6f8f89b6fdb25f ]
hp_accel can take almost two seconds to resume on some HP laptops.
The bottleneck is on evaluating _INI, which is only needed to run once.
Resolve the issue by only invoking _INI when it's necessary. Namely, on
probe and on hibernation restore.
Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
Acked-by: Éric Piel <eric.piel@trempplin-utc.net>
Link: https://lore.kernel.org/r/20210430060736.590321-1-kai.heng.feng@canonical.com
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/misc')
| -rw-r--r-- | drivers/misc/lis3lv02d/lis3lv02d.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/misc/lis3lv02d/lis3lv02d.h b/drivers/misc/lis3lv02d/lis3lv02d.h index 1b0c99883c57..c008eecfdfe8 100644 --- a/drivers/misc/lis3lv02d/lis3lv02d.h +++ b/drivers/misc/lis3lv02d/lis3lv02d.h @@ -271,6 +271,7 @@ struct lis3lv02d { int regs_size; u8 *reg_cache; bool regs_stored; + bool init_required; u8 odr_mask; /* ODR bit mask */ u8 whoami; /* indicates measurement precision */ s16 (*read_data) (struct lis3lv02d *lis3, int reg); |