diff options
| author |   Matt Ranostay <mranostay@gmail.com> | 2016-09-30 21:45:30 -0700 |
|---|---|---|
| committer |   Sebastian Reichel <sre@kernel.org> | 2016-10-19 05:06:28 +0200 |
| commit | 950b6c2d110e8df65b9d2704cc7039f3d0d9f7b2 (patch) | |
| tree | 205f5a3dfec7543484920eaf9671f0945c52c595 /drivers/power | |
| parent | power: supply: improve function-level documentation (diff) | |
| download | linux-dev-950b6c2d110e8df65b9d2704cc7039f3d0d9f7b2.tar.xz linux-dev-950b6c2d110e8df65b9d2704cc7039f3d0d9f7b2.zip | |
power: supply: bq27xxx_battery: don't update poll_interval param if same
To avoid canceling the delayed workqueue needlessly, and scheduling an
immediate polling. Check if the new poll_interval value is different
than the previous setting.
Cc: Tony Lindgren <tony@atomide.com>
Cc: Sebastian Reichel <sre@kernel.org>
Signed-off-by: Matt Ranostay <matt@ranostay.consulting>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
Diffstat (limited to 'drivers/power')
| -rw-r--r-- | drivers/power/supply/bq27xxx_battery.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/power/supply/bq27xxx_battery.c b/drivers/power/supply/bq27xxx_battery.c index 3b0dbc689d72..0c343a0c941e 100644 --- a/drivers/power/supply/bq27xxx_battery.c +++ b/drivers/power/supply/bq27xxx_battery.c @@ -397,10 +397,11 @@ static LIST_HEAD(bq27xxx_battery_devices); static int poll_interval_param_set(const char *val, const struct kernel_param *kp) { struct bq27xxx_device_info *di; + unsigned int prev_val = *(unsigned int *) kp->arg; int ret; ret = param_set_uint(val, kp); - if (ret < 0) + if (ret < 0 || prev_val == *(unsigned int *) kp->arg) return ret; mutex_lock(&bq27xxx_list_lock); |