target/linux/mediatek/patches-5.15/823-v5.17-pinctrl-mediatek-add-a-check-for-error-in-mtk_pincon.patch

   1 From 9f9d17c228c89e38ed612500126daf626270be9a Mon Sep 17 00:00:00 2001
   2 From: Dan Carpenter <dan.carpenter@oracle.com>
   3 Date: Sat, 27 Nov 2021 17:08:36 +0300
   4 Subject: [PATCH] pinctrl: mediatek: add a check for error in
   5  mtk_pinconf_bias_get_rsel()
   6
   7 All the other mtk_hw_get_value() calls have a check for "if (err)" so
   8 we can add one here as well.  This silences a Smatch warning:
   9
  10     drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c:819 mtk_pinconf_bias_get_rsel()
  11     error: uninitialized symbol 'pd'.
  12
  13 Fixes: fb34a9ae383a ("pinctrl: mediatek: support rsel feature")
  14 Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
  15 Link: https://lore.kernel.org/r/20211127140836.GB24002@kili
  16 Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
  17 ---
  18  drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c | 2 ++
  19  1 file changed, 2 insertions(+)
  20
  21 --- a/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c
  22 +++ b/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c
  23 @@ -815,6 +815,8 @@ static int mtk_pinconf_bias_get_rsel(str
  24                 goto out;
  25
  26         err = mtk_hw_get_value(hw, desc, PINCTRL_PIN_REG_PD, &pd);
  27 +       if (err)
  28 +               goto out;
  29
  30         if (pu == 0 && pd == 0) {
  31                 *pullup = 0;