[media] rc-main: store_filter: pass errors to userland
Propagate errors returned by drivers from the s_filter callback back to
userland when updating scancode filters. This allows userland to see
when the filter couldn't be updated, usually because it's not a valid
filter for the hardware.
Previously the filter was being updated conditionally on success of
s_filter, but the write always reported success back to userland.
Reported-by: Antti Seppälä <a.seppala@gmail.com>
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
diff --git a/drivers/media/rc/rc-main.c b/drivers/media/rc/rc-main.c
index 2ec60f8..6448128 100644
--- a/drivers/media/rc/rc-main.c
+++ b/drivers/media/rc/rc-main.c
@@ -1090,7 +1090,7 @@
unlock:
mutex_unlock(&dev->lock);
- return count;
+ return (ret < 0) ? ret : count;
}
static void rc_dev_release(struct device *device)