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power: supply: bq27xxx_battery: don't update poll_interval param if same

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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>
This commit is contained in:
Matt Ranostay 2016-09-30 21:45:30 -07:00 committed by Sebastian Reichel
parent 32c52eff6a
commit 950b6c2d11
1 changed files with 2 additions and 1 deletions
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3
drivers/power/supply/bq27xxx_battery.c
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@ -397,10 +397,11 @@ static LIST_HEAD(bq27xxx_battery_devices);
static int poll_interval_param_set(const char *val, const struct kernel_param *kp) static int poll_interval_param_set(const char *val, const struct kernel_param *kp)
{ {
struct bq27xxx_device_info *di; struct bq27xxx_device_info *di;
unsigned int prev_val = *(unsigned int *) kp->arg;
int ret; int ret;
ret = param_set_uint(val, kp); ret = param_set_uint(val, kp);
if (ret < 0) if (ret < 0 || prev_val == *(unsigned int *) kp->arg)
return ret; return ret;
mutex_lock(&bq27xxx_list_lock); mutex_lock(&bq27xxx_list_lock);