drivers/net/usb/lan78xx.c:2625 lan78xx_set_fixed_link() warn: format string contains non-ascii character '\xe2'

BCC: [email protected]
CC: [email protected]
CC: [email protected]
TO: Oleksij Rempel <[email protected]>
CC: Jakub Kicinski <[email protected]>
CC: "Russell King (Oracle)" <[email protected]>

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   0e35b9b6ec0ffcc5e23cbdec09f5c622ad532b53
commit: e110bc82589752909e283ba5cbc160e0ab56c085 net: usb: lan78xx: Convert to PHYLINK for improved PHY and MAC management
date:   1 year, 1 month ago
:::::: branch date: 2 days ago
:::::: commit date: 1 year, 1 month ago
config: x86_64-randconfig-161 (https://download.01.org/0day-ci/archive/20260709/[email protected]/config)
compiler: gcc-14 (Debian 14.2.0-19) 14.2.0
smatch: v0.5.0-9185-gbcc58b9c

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Fixes: e110bc825897 ("net: usb: lan78xx: Convert to PHYLINK for improved PHY and MAC management")
| Reported-by: kernel test robot <[email protected]>
| Reported-by: Dan Carpenter <[email protected]>
| Closes: https://lore.kernel.org/r/[email protected]/

New smatch warnings:
drivers/net/usb/lan78xx.c:2625 lan78xx_set_fixed_link() warn: format string contains non-ascii character '\xe2'

Old smatch warnings:
drivers/net/usb/lan78xx.c:2625 lan78xx_set_fixed_link() warn: format string contains non-ascii character '\x80'
drivers/net/usb/lan78xx.c:2625 lan78xx_set_fixed_link() warn: format string contains non-ascii character '\x93'
drivers/net/usb/lan78xx.c:2656 lan78xx_get_phy() warn: format string contains non-ascii character '\xe2'
drivers/net/usb/lan78xx.c:2656 lan78xx_get_phy() warn: format string contains non-ascii character '\x80'
drivers/net/usb/lan78xx.c:2656 lan78xx_get_phy() warn: format string contains non-ascii character '\x93'
drivers/net/usb/lan78xx.c:2860 lan78xx_phy_init() error: we previously assumed 'phydev' could be null (see line 2848)
drivers/net/usb/lan78xx.c:2860 lan78xx_phy_init() warn: 'phydev' can also be NULL
drivers/net/usb/lan78xx.c:2862 lan78xx_phy_init() warn: 'phydev' can also be NULL
drivers/net/usb/lan78xx.c:3142 lan78xx_init_ltm() warn: missing unwind goto?

vim +2625 drivers/net/usb/lan78xx.c

e110bc82589752 Oleksij Rempel            2025-06-18  2607  
d39f339d260373 Oleksij Rempel            2025-05-05  2608  /**
e110bc82589752 Oleksij Rempel            2025-06-18  2609   * lan78xx_set_fixed_link() - Set fixed link configuration for LAN7801
d39f339d260373 Oleksij Rempel            2025-05-05  2610   * @dev: LAN78xx device
d39f339d260373 Oleksij Rempel            2025-05-05  2611   *
e110bc82589752 Oleksij Rempel            2025-06-18  2612   * Use fixed link configuration with 1 Gbps full duplex. This is used in special
e110bc82589752 Oleksij Rempel            2025-06-18  2613   * cases like EVB-KSZ9897-1, where LAN7801 acts as a USB-to-Ethernet interface
e110bc82589752 Oleksij Rempel            2025-06-18  2614   * to a switch without a visible PHY.
d39f339d260373 Oleksij Rempel            2025-05-05  2615   *
d39f339d260373 Oleksij Rempel            2025-05-05  2616   * Return: pointer to the registered fixed PHY, or ERR_PTR() on error.
d39f339d260373 Oleksij Rempel            2025-05-05  2617   */
e110bc82589752 Oleksij Rempel            2025-06-18  2618  static int lan78xx_set_fixed_link(struct lan78xx_net *dev)
55d7de9de6c30a [email protected] 2015-07-30  2619  {
e110bc82589752 Oleksij Rempel            2025-06-18  2620  	static const struct phylink_link_state state = {
89b36fb5e53244 Raghuram Chary J          2018-04-28  2621  		.speed = SPEED_1000,
89b36fb5e53244 Raghuram Chary J          2018-04-28  2622  		.duplex = DUPLEX_FULL,
89b36fb5e53244 Raghuram Chary J          2018-04-28  2623  	};
d39f339d260373 Oleksij Rempel            2025-05-05  2624  
d39f339d260373 Oleksij Rempel            2025-05-05 @2625  	netdev_info(dev->net,
e110bc82589752 Oleksij Rempel            2025-06-18  2626  		    "No PHY found on LAN7801 – using fixed link instead (e.g. EVB-KSZ9897-1)\n");
d39f339d260373 Oleksij Rempel            2025-05-05  2627  
e110bc82589752 Oleksij Rempel            2025-06-18  2628  	return phylink_set_fixed_link(dev->phylink, &state);
d39f339d260373 Oleksij Rempel            2025-05-05  2629  }
d39f339d260373 Oleksij Rempel            2025-05-05  2630  

:::::: The code at line 2625 was first introduced by commit
:::::: d39f339d2603736ff90b0b32d9aea3b954307fd5 net: usb: lan78xx: refactor PHY init to separate detection and MAC configuration

:::::: TO: Oleksij Rempel <[email protected]>
:::::: CC: David S. Miller <[email protected]>

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