[deller-parisc:for-next 11/13] arch/parisc/net/bpf_jit_core.c:20:14: warning: variable 'again' set but not used

[deller-parisc:for-next 11/13] arch/parisc/net/bpf_jit_core.c:20:14: warning: variable 'again' set but not used

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux.git for-next
head:   557fefd16958f21ae5aa9994dd2b2d9e0d683787
commit: d5e3a70d1d99fe11c8552fd489ce6908774bf746 [11/13] parisc: Wire up eBPF JIT compiler
config: parisc-allyesconfig (https://download.01.org/0day-ci/archive/20230822/202308221007.DdwwUTXx-lkp@intel.com/config)
compiler: hppa-linux-gcc (GCC) 12.3.0
reproduce: (https://download.01.org/0day-ci/archive/20230822/202308221007.DdwwUTXx-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/oe-kbuild-all/202308221007.DdwwUTXx-lkp@intel.com/

All warnings (new ones prefixed by >>):

   arch/parisc/net/bpf_jit_core.c: In function 'build_body':
>> arch/parisc/net/bpf_jit_core.c:20:14: warning: variable 'again' set but not used [-Wunused-but-set-variable]
      20 |         bool again = false;
         |              ^~~~~


vim +/again +20 arch/parisc/net/bpf_jit_core.c

0ae0a14c3835b3 Helge Deller 2023-08-17  15  
0ae0a14c3835b3 Helge Deller 2023-08-17  16  static int build_body(struct hppa_jit_context *ctx, bool extra_pass, int *offset)
0ae0a14c3835b3 Helge Deller 2023-08-17  17  {
0ae0a14c3835b3 Helge Deller 2023-08-17  18  	const struct bpf_prog *prog = ctx->prog;
0ae0a14c3835b3 Helge Deller 2023-08-17  19  	int i;
0ae0a14c3835b3 Helge Deller 2023-08-17 @20  	bool again = false;
0ae0a14c3835b3 Helge Deller 2023-08-17  21  
0ae0a14c3835b3 Helge Deller 2023-08-17  22  	ctx->reg_seen_collect = true;
0ae0a14c3835b3 Helge Deller 2023-08-17  23  	for (i = 0; i < prog->len; i++) {
0ae0a14c3835b3 Helge Deller 2023-08-17  24  		const struct bpf_insn *insn = &prog->insnsi[i];
0ae0a14c3835b3 Helge Deller 2023-08-17  25  		int ret;
0ae0a14c3835b3 Helge Deller 2023-08-17  26  
0ae0a14c3835b3 Helge Deller 2023-08-17  27  		ret = bpf_jit_emit_insn(insn, ctx, extra_pass);
0ae0a14c3835b3 Helge Deller 2023-08-17  28  // printk("instruction #%d -> RET %d\n", i, ret);
0ae0a14c3835b3 Helge Deller 2023-08-17  29  		/* BPF_LD | BPF_IMM | BPF_DW: skip the next instruction. */
0ae0a14c3835b3 Helge Deller 2023-08-17  30  		if (ret > 0)
0ae0a14c3835b3 Helge Deller 2023-08-17  31  			i++;
0ae0a14c3835b3 Helge Deller 2023-08-17  32  		if (offset) {
0ae0a14c3835b3 Helge Deller 2023-08-17  33  			if (offset[i] != ctx->ninsns)
0ae0a14c3835b3 Helge Deller 2023-08-17  34  				again = 1;
0ae0a14c3835b3 Helge Deller 2023-08-17  35  			offset[i] = ctx->ninsns;
0ae0a14c3835b3 Helge Deller 2023-08-17  36  		}
0ae0a14c3835b3 Helge Deller 2023-08-17  37  // printk("INSTR  %d  offset at %d\n", i, offset ? offset[i]: 0);
0ae0a14c3835b3 Helge Deller 2023-08-17  38  		if (ret < 0)
0ae0a14c3835b3 Helge Deller 2023-08-17  39  			return ret;
0ae0a14c3835b3 Helge Deller 2023-08-17  40  	}
0ae0a14c3835b3 Helge Deller 2023-08-17  41  	ctx->reg_seen_collect = false;
0ae0a14c3835b3 Helge Deller 2023-08-17  42  	return 0;
0ae0a14c3835b3 Helge Deller 2023-08-17  43  }
0ae0a14c3835b3 Helge Deller 2023-08-17  44  

:::::: The code at line 20 was first introduced by commit
:::::: 0ae0a14c3835b36b7a5eb1616cd28e5082029290 parisc: Add eBPF JIT compiler glue code and Makefile

:::::: TO: Helge Deller <deller@gmx.de>
:::::: CC: Helge Deller <deller@gmx.de>

-- 
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https://github.com/intel/lkp-tests/wiki