diff options
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 08:22:07 +0200 |
commit | cf5502e81afe9d7a4abad999c79eb54d53316c2e (patch) | |
tree | bf6e4a1b6143f84ebba9b1669805a13856825ea5 /drivers/misc | |
parent | f9469082126cebb7337db3992d143f5e4edfe629 (diff) |
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 c439c827eea8..0ef759671b54 100644 --- a/drivers/misc/lis3lv02d/lis3lv02d.h +++ b/drivers/misc/lis3lv02d/lis3lv02d.h @@ -284,6 +284,7 @@ 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); |