| From | Willy Tarreau <> | Subject | [PATCH 3.10 177/180] net: rfkill: Do not ignore errors from regulator_enable() | Date | Sun, 21 Aug 2016 17:31:47 +0200 |
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From: Luis Henriques <luis.henriques@canonical.com>
commit dee08ab83d0378d922b67e7cf10bbec3e4ea343b upstream.
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> Signed-off-by: Willy Tarreau <w@1wt.eu> --- net/rfkill/rfkill-regulator.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-)
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 @@ struct rfkill_regulator_data { 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 @@ static int rfkill_regulator_set_block(void *data, bool blocked) } } 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 = { -- 2.8.0.rc2.1.gbe9624a
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