net: rfkill: Do not ignore errors from regulator_enable()
Function regulator_enable() may return an error that has to be checked.
This patch changes function rfkill_regulator_set_block() so that it checks
for the return code. Also, rfkill_data->reg_enabled is set to 'true' only
if there is no error.
This fixes the following compilation warning:
net/rfkill/rfkill-regulator.c:43:20: warning: ignoring return value of 'regulator_enable', declared with attribute warn_unused_result [-Wunused-result]
Signed-off-by: Luis Henriques <luis.henriques@canonical.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
diff --git a/net/rfkill/rfkill-regulator.c b/net/rfkill/rfkill-regulator.c
index d11ac79..cf5b145 100644
--- a/net/rfkill/rfkill-regulator.c
+++ b/net/rfkill/rfkill-regulator.c
@@ -30,6 +30,7 @@
static int rfkill_regulator_set_block(void *data, bool blocked)
{
struct rfkill_regulator_data *rfkill_data = data;
+ int ret = 0;
pr_debug("%s: blocked: %d\n", __func__, blocked);
@@ -40,15 +41,16 @@
}
} else {
if (!rfkill_data->reg_enabled) {
- regulator_enable(rfkill_data->vcc);
- rfkill_data->reg_enabled = true;
+ ret = regulator_enable(rfkill_data->vcc);
+ if (!ret)
+ rfkill_data->reg_enabled = true;
}
}
pr_debug("%s: regulator_is_enabled after set_block: %d\n", __func__,
regulator_is_enabled(rfkill_data->vcc));
- return 0;
+ return ret;
}
static struct rfkill_ops rfkill_regulator_ops = {