Messages in this thread Patch in this message |  | | From | Matt Ranostay <> | Subject | [PATCH] power: bq27xxx_battery: don't update poll_interval param if same | Date | Fri, 30 Sep 2016 21:45:30 -0700 |
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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> --- drivers/power/supply/bq27xxx_battery.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/power/supply/bq27xxx_battery.c b/drivers/power/supply/bq27xxx_battery.c index d18802ca3327..e01cea9a395a 100644 --- a/drivers/power/supply/bq27xxx_battery.c +++ b/drivers/power/supply/bq27xxx_battery.c @@ -404,10 +404,11 @@ 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); -- 2.7.4
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