target/linux/generic/backport-6.6/790-12-v6.9-net-dsa-mt7530-empty-default-case-on-mt7530_setup_po.patch

   1 From 1f538cda24bcb69919da2fcac0211b66281d3d4e Mon Sep 17 00:00:00 2001
   2 From: =?UTF-8?q?Ar=C4=B1n=C3=A7=20=C3=9CNAL?= <arinc.unal@arinc9.com>
   3 Date: Tue, 6 Feb 2024 01:08:02 +0300
   4 Subject: [PATCH 12/30] net: dsa: mt7530: empty default case on
   5  mt7530_setup_port5()
   6 MIME-Version: 1.0
   7 Content-Type: text/plain; charset=UTF-8
   8 Content-Transfer-Encoding: 8bit
   9
  10 There're two code paths for setting up port 5:
  11
  12 mt7530_setup()
  13 -> mt7530_setup_port5()
  14
  15 mt753x_phylink_mac_config()
  16 -> mt753x_mac_config()
  17    -> mt7530_mac_config()
  18       -> mt7530_setup_port5()
  19
  20 On the first code path, priv->p5_intf_sel is either set to
  21 P5_INTF_SEL_PHY_P0 or P5_INTF_SEL_PHY_P4 when mt7530_setup_port5() is run.
  22
  23 On the second code path, priv->p5_intf_sel is set to P5_INTF_SEL_GMAC5 when
  24 mt7530_setup_port5() is run.
  25
  26 Empty the default case which will never run but is needed nonetheless to
  27 handle all the remaining enumeration values.
  28
  29 Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
  30 Reviewed-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
  31 Signed-off-by: Arınç ÜNAL <arinc.unal@arinc9.com>
  32 Link: https://lore.kernel.org/r/20240206-for-netnext-mt7530-improvements-2-v5-1-d7d92a185cb1@arinc9.com
  33 Signed-off-by: Jakub Kicinski <kuba@kernel.org>
  34 ---
  35  drivers/net/dsa/mt7530.c | 5 +----
  36  1 file changed, 1 insertion(+), 4 deletions(-)
  37
  38 --- a/drivers/net/dsa/mt7530.c
  39 +++ b/drivers/net/dsa/mt7530.c
  40 @@ -943,9 +943,7 @@ static void mt7530_setup_port5(struct ds
  41                 val &= ~MHWTRAP_P5_DIS;
  42                 break;
  43         default:
  44 -               dev_err(ds->dev, "Unsupported p5_intf_sel %d\n",
  45 -                       priv->p5_intf_sel);
  46 -               goto unlock_exit;
  47 +               break;
  48         }
  49
  50         /* Setup RGMII settings */
  51 @@ -975,7 +973,6 @@ static void mt7530_setup_port5(struct ds
  52         dev_dbg(ds->dev, "Setup P5, HWTRAP=0x%x, intf_sel=%s, phy-mode=%s\n",
  53                 val, p5_intf_modes(priv->p5_intf_sel), phy_modes(interface));
  54
  55 -unlock_exit:
  56         mutex_unlock(&priv->reg_mutex);
  57  }
  58