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| author | Christophe JAILLET <christophe.jaillet@wanadoo.fr> | 2021-07-23 18:41:52 +0300 |
|---|---|---|
| committer | Jiri Kosina <jkosina@suse.cz> | 2021-08-20 15:20:34 +0300 |
| commit | 46dcd1cc2b2fa43bd99f39c7c236d5cdb80522f0 (patch) | |
| tree | bb01b4c683710cae8a5463a1ab62292f70647ed4 /drivers | |
| parent | df04fbe8680bfe07f3d7487eccff9f768bb02533 (diff) | |
| download | linux-46dcd1cc2b2fa43bd99f39c7c236d5cdb80522f0.tar.xz | |
HID: logitech-hidpp: Use 'atomic_inc_return' instead of hand-writing it
This function logs a warning if the workqueue gets too big.
In order to save a few cycles, use 'atomic_inc_return()' instead of an
'atomic_inc()/atomic_read()' sequence.
This axes a line of code and saves a 'atomic_read()' call.
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/hid/hid-logitech-hidpp.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/drivers/hid/hid-logitech-hidpp.c b/drivers/hid/hid-logitech-hidpp.c index 61635e629469..a7fa35245c2e 100644 --- a/drivers/hid/hid-logitech-hidpp.c +++ b/drivers/hid/hid-logitech-hidpp.c @@ -2240,11 +2240,10 @@ static int hidpp_ff_queue_work(struct hidpp_ff_private_data *data, int effect_id wd->size = size; memcpy(wd->params, params, size); - atomic_inc(&data->workqueue_size); + s = atomic_inc_return(&data->workqueue_size); queue_work(data->wq, &wd->work); /* warn about excessive queue size */ - s = atomic_read(&data->workqueue_size); if (s >= 20 && s % 20 == 0) hid_warn(data->hidpp->hid_dev, "Force feedback command queue contains %d commands, causing substantial delays!", s); |