drivers/net/ethernet/realtek/r8169_main.c:5161:3: warning: label followed by a declaration is a C23 extension

drivers/net/ethernet/realtek/r8169_main.c:5161:3: warning: label followed by a declaration is a C23 extension

[kernel test robot]

:::::: 
:::::: Manual check reason: "bisect to a FBC not belonging to original linux-review patches: branch: linux-review/javen/r8169-add-support-for-multi-irqs/20260811-195102, commit: 4d4c6d643fda8df39e065683728abd64379f3ffb"
:::::: 

BCC: lkp@intel.com
CC: llvm@lists.linux.dev
CC: oe-kbuild-all@lists.linux.dev
TO: Javen Xu <javen_xu@realsil.com.cn>
CC: 0day robot <lkp@intel.com>

tree:   https://github.com/intel-lab-lkp/linux/commits/javen/r8169-add-support-for-multi-irqs/20260811-195102
head:   d59b0fc7e3bbccbc0418e405b1a7ecf0665b986a
commit: 4d4c6d643fda8df39e065683728abd64379f3ffb r8169: add support and enable rss
date:   20 hours ago
:::::: branch date: 20 hours ago
:::::: commit date: 20 hours ago
config: arm64-randconfig-004-20260812 (https://download.01.org/0day-ci/archive/20260812/202608121506.0oaMDBfU-lkp@intel.com/config)
compiler: clang version 24.0.0git (https://github.com/llvm/llvm-project 12df34b8469b8095359de8c249cb1b2753fadeea)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260812/202608121506.0oaMDBfU-lkp@intel.com/reproduce)

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
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/r/202608121506.0oaMDBfU-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> drivers/net/ethernet/realtek/r8169_main.c:5161:3: warning: label followed by a declaration is a C23 extension [-Wc23-extensions]
    5161 |                 u32 status = opts1 & (RxProtoMask | RxCSFailMask);
         |                 ^
   1 warning generated.


vim +5161 drivers/net/ethernet/realtek/r8169_main.c

4d4c6d643fda8d drivers/net/ethernet/realtek/r8169_main.c Javen Xu        2026-08-03  5147  
4d4c6d643fda8d drivers/net/ethernet/realtek/r8169_main.c Javen Xu        2026-08-03  5148  static inline void rtl8169_rx_csum(struct rtl8169_private *tp,
4d4c6d643fda8d drivers/net/ethernet/realtek/r8169_main.c Javen Xu        2026-08-03  5149  				   struct sk_buff *skb,
31f019951f5da8 drivers/net/ethernet/realtek/r8169_main.c Javen Xu        2026-08-03  5150  				   u32 opts1)
^1da177e4c3f41 drivers/net/r8169.c                       Linus Torvalds  2005-04-16  5151  {
4d4c6d643fda8d drivers/net/ethernet/realtek/r8169_main.c Javen Xu        2026-08-03  5152  	bool csum_ok = false;
4d4c6d643fda8d drivers/net/ethernet/realtek/r8169_main.c Javen Xu        2026-08-03  5153  
4d4c6d643fda8d drivers/net/ethernet/realtek/r8169_main.c Javen Xu        2026-08-03  5154  	switch (tp->init_rx_desc_type) {
4d4c6d643fda8d drivers/net/ethernet/realtek/r8169_main.c Javen Xu        2026-08-03  5155  	case RX_DESC_TYPE_RSS:
4d4c6d643fda8d drivers/net/ethernet/realtek/r8169_main.c Javen Xu        2026-08-03  5156  		if (((opts1 & RX_TCPT_DESC_RSS) && !(opts1 & RX_TCPF_DESC_RSS)) ||
4d4c6d643fda8d drivers/net/ethernet/realtek/r8169_main.c Javen Xu        2026-08-03  5157  		    ((opts1 & RX_UDPT_DESC_RSS) && !(opts1 & RX_UDPF_DESC_RSS)))
4d4c6d643fda8d drivers/net/ethernet/realtek/r8169_main.c Javen Xu        2026-08-03  5158  			csum_ok = true;
4d4c6d643fda8d drivers/net/ethernet/realtek/r8169_main.c Javen Xu        2026-08-03  5159  		break;
4d4c6d643fda8d drivers/net/ethernet/realtek/r8169_main.c Javen Xu        2026-08-03  5160  	default:
206a75e003e17a drivers/net/ethernet/realtek/r8169_main.c Heiner Kallweit 2021-01-12 @5161  		u32 status = opts1 & (RxProtoMask | RxCSFailMask);
^1da177e4c3f41 drivers/net/r8169.c                       Linus Torvalds  2005-04-16  5162  
206a75e003e17a drivers/net/ethernet/realtek/r8169_main.c Heiner Kallweit 2021-01-12  5163  		if (status == RxProtoTCP || status == RxProtoUDP)
4d4c6d643fda8d drivers/net/ethernet/realtek/r8169_main.c Javen Xu        2026-08-03  5164  			csum_ok = true;
4d4c6d643fda8d drivers/net/ethernet/realtek/r8169_main.c Javen Xu        2026-08-03  5165  		break;
4d4c6d643fda8d drivers/net/ethernet/realtek/r8169_main.c Javen Xu        2026-08-03  5166  	}
4d4c6d643fda8d drivers/net/ethernet/realtek/r8169_main.c Javen Xu        2026-08-03  5167  
4d4c6d643fda8d drivers/net/ethernet/realtek/r8169_main.c Javen Xu        2026-08-03  5168  	if (csum_ok)
^1da177e4c3f41 drivers/net/r8169.c                       Linus Torvalds  2005-04-16  5169  		skb->ip_summed = CHECKSUM_UNNECESSARY;
^1da177e4c3f41 drivers/net/r8169.c                       Linus Torvalds  2005-04-16  5170  	else
bc8acf2c8c3e43 drivers/net/r8169.c                       Eric Dumazet    2010-09-02  5171  		skb_checksum_none_assert(skb);
^1da177e4c3f41 drivers/net/r8169.c                       Linus Torvalds  2005-04-16  5172  }
^1da177e4c3f41 drivers/net/r8169.c                       Linus Torvalds  2005-04-16  5173  

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