Re: [PATCH] coda: remove unused variable

From: kernel test robot
Date: Wed Jun 01 2022 - 10:21:52 EST

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Hi Haowen,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on linus/master]
[also build test ERROR on v5.18 next-20220601]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]

url: https://github.com/intel-lab-lkp/linux/commits/Haowen-Bai/coda-remove-unused-variable/20220601-160014
base: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 700170bf6b4d773e328fa54ebb70ba444007c702
config: i386-randconfig-a006 (https://download.01.org/0day-ci/archive/20220601/202206012159.9WhO0iYq-lkp@xxxxxxxxx/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project c825abd6b0198fb088d9752f556a70705bc99dfd)
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# https://github.com/intel-lab-lkp/linux/commit/627c05172e8d819cb8dca41dfa795baae03ea6f9
git remote add linux-review https://github.com/intel-lab-lkp/linux
git fetch --no-tags linux-review Haowen-Bai/coda-remove-unused-variable/20220601-160014
git checkout 627c05172e8d819cb8dca41dfa795baae03ea6f9
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=i386 SHELL=/bin/bash fs/coda/

If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@xxxxxxxxx>

All errors (new ones prefixed by >>):

fs/coda/upcall.c:115:27: warning: variable 'outp' set but not used [-Wunused-but-set-variable]
union outputArgs *outp;
^
fs/coda/upcall.c:164:20: warning: variable 'outp' set but not used [-Wunused-but-set-variable]
union outputArgs *outp;
^
fs/coda/upcall.c:238:27: warning: variable 'outp' set but not used [-Wunused-but-set-variable]
union outputArgs *outp;
^
fs/coda/upcall.c:306:27: warning: variable 'outp' set but not used [-Wunused-but-set-variable]
union outputArgs *outp;
^
fs/coda/upcall.c:329:27: warning: variable 'outp' set but not used [-Wunused-but-set-variable]
union outputArgs *outp;
^
fs/coda/upcall.c:383:27: warning: variable 'outp' set but not used [-Wunused-but-set-variable]
union outputArgs *outp;
^
fs/coda/upcall.c:410:27: warning: variable 'outp' set but not used [-Wunused-but-set-variable]
union outputArgs *outp;
^
fs/coda/upcall.c:443:27: warning: variable 'outp' set but not used [-Wunused-but-set-variable]
union outputArgs *outp;
^
fs/coda/upcall.c:459:27: warning: variable 'outp' set but not used [-Wunused-but-set-variable]
union outputArgs *outp;
^
>> fs/coda/upcall.c:483:2: error: use of undeclared identifier 'insize'
UPARG(CODA_IOCTL);
^
fs/coda/upcall.c:63:44: note: expanded from macro 'UPARG'
inp = (union inputArgs *)alloc_upcall(op, insize); \
^
>> fs/coda/upcall.c:483:2: error: use of undeclared identifier 'insize'
fs/coda/upcall.c:66:19: note: expanded from macro 'UPARG'
outsize = insize; \
^
fs/coda/upcall.c:576:20: warning: variable 'outp' set but not used [-Wunused-but-set-variable]
union outputArgs *outp;
^
10 warnings and 2 errors generated.

vim +/insize +483 fs/coda/upcall.c

^1da177e4c3f41 Linus Torvalds 2005-04-16 473
^1da177e4c3f41 Linus Torvalds 2005-04-16 474
^1da177e4c3f41 Linus Torvalds 2005-04-16 475 int venus_pioctl(struct super_block *sb, struct CodaFid *fid,
^1da177e4c3f41 Linus Torvalds 2005-04-16 476 unsigned int cmd, struct PioctlData *data)
^1da177e4c3f41 Linus Torvalds 2005-04-16 477 {
^1da177e4c3f41 Linus Torvalds 2005-04-16 478 union inputArgs *inp;
^1da177e4c3f41 Linus Torvalds 2005-04-16 479 union outputArgs *outp;
627c05172e8d81 Haowen Bai 2022-06-01 480 int outsize, error;
^1da177e4c3f41 Linus Torvalds 2005-04-16 481 int iocsize;
^1da177e4c3f41 Linus Torvalds 2005-04-16 482
^1da177e4c3f41 Linus Torvalds 2005-04-16 @483 UPARG(CODA_IOCTL);
^1da177e4c3f41 Linus Torvalds 2005-04-16 484
^1da177e4c3f41 Linus Torvalds 2005-04-16 485 /* build packet for Venus */
^1da177e4c3f41 Linus Torvalds 2005-04-16 486 if (data->vi.in_size > VC_MAXDATASIZE) {
^1da177e4c3f41 Linus Torvalds 2005-04-16 487 error = -EINVAL;
^1da177e4c3f41 Linus Torvalds 2005-04-16 488 goto exit;
^1da177e4c3f41 Linus Torvalds 2005-04-16 489 }
^1da177e4c3f41 Linus Torvalds 2005-04-16 490
^1da177e4c3f41 Linus Torvalds 2005-04-16 491 if (data->vi.out_size > VC_MAXDATASIZE) {
^1da177e4c3f41 Linus Torvalds 2005-04-16 492 error = -EINVAL;
^1da177e4c3f41 Linus Torvalds 2005-04-16 493 goto exit;
^1da177e4c3f41 Linus Torvalds 2005-04-16 494 }
^1da177e4c3f41 Linus Torvalds 2005-04-16 495
^1da177e4c3f41 Linus Torvalds 2005-04-16 496 inp->coda_ioctl.VFid = *fid;
^1da177e4c3f41 Linus Torvalds 2005-04-16 497
^1da177e4c3f41 Linus Torvalds 2005-04-16 498 /* the cmd field was mutated by increasing its size field to
^1da177e4c3f41 Linus Torvalds 2005-04-16 499 * reflect the path and follow args. We need to subtract that
^1da177e4c3f41 Linus Torvalds 2005-04-16 500 * out before sending the command to Venus. */
^1da177e4c3f41 Linus Torvalds 2005-04-16 501 inp->coda_ioctl.cmd = (cmd & ~(PIOCPARM_MASK << 16));
^1da177e4c3f41 Linus Torvalds 2005-04-16 502 iocsize = ((cmd >> 16) & PIOCPARM_MASK) - sizeof(char *) - sizeof(int);
^1da177e4c3f41 Linus Torvalds 2005-04-16 503 inp->coda_ioctl.cmd |= (iocsize & PIOCPARM_MASK) << 16;
^1da177e4c3f41 Linus Torvalds 2005-04-16 504
^1da177e4c3f41 Linus Torvalds 2005-04-16 505 /* in->coda_ioctl.rwflag = flag; */
^1da177e4c3f41 Linus Torvalds 2005-04-16 506 inp->coda_ioctl.len = data->vi.in_size;
^1da177e4c3f41 Linus Torvalds 2005-04-16 507 inp->coda_ioctl.data = (char *)(INSIZE(ioctl));
^1da177e4c3f41 Linus Torvalds 2005-04-16 508
^1da177e4c3f41 Linus Torvalds 2005-04-16 509 /* get the data out of user space */
^1da177e4c3f41 Linus Torvalds 2005-04-16 510 if (copy_from_user((char *)inp + (long)inp->coda_ioctl.data,
^1da177e4c3f41 Linus Torvalds 2005-04-16 511 data->vi.in, data->vi.in_size)) {
^1da177e4c3f41 Linus Torvalds 2005-04-16 512 error = -EINVAL;
^1da177e4c3f41 Linus Torvalds 2005-04-16 513 goto exit;
^1da177e4c3f41 Linus Torvalds 2005-04-16 514 }
^1da177e4c3f41 Linus Torvalds 2005-04-16 515
a1b0aa87647493 Jan Harkes 2007-07-19 516 error = coda_upcall(coda_vcp(sb), SIZE(ioctl) + data->vi.in_size,
^1da177e4c3f41 Linus Torvalds 2005-04-16 517 &outsize, inp);
^1da177e4c3f41 Linus Torvalds 2005-04-16 518
^1da177e4c3f41 Linus Torvalds 2005-04-16 519 if (error) {
6d6bd94f4d83d7 Fabian Frederick 2014-06-06 520 pr_warn("%s: Venus returns: %d for %s\n",
6d6bd94f4d83d7 Fabian Frederick 2014-06-06 521 __func__, error, coda_f2s(fid));
^1da177e4c3f41 Linus Torvalds 2005-04-16 522 goto exit;
^1da177e4c3f41 Linus Torvalds 2005-04-16 523 }
^1da177e4c3f41 Linus Torvalds 2005-04-16 524
^1da177e4c3f41 Linus Torvalds 2005-04-16 525 if (outsize < (long)outp->coda_ioctl.data + outp->coda_ioctl.len) {
^1da177e4c3f41 Linus Torvalds 2005-04-16 526 error = -EINVAL;
^1da177e4c3f41 Linus Torvalds 2005-04-16 527 goto exit;
^1da177e4c3f41 Linus Torvalds 2005-04-16 528 }
^1da177e4c3f41 Linus Torvalds 2005-04-16 529
^1da177e4c3f41 Linus Torvalds 2005-04-16 530 /* Copy out the OUT buffer. */
^1da177e4c3f41 Linus Torvalds 2005-04-16 531 if (outp->coda_ioctl.len > data->vi.out_size) {
^1da177e4c3f41 Linus Torvalds 2005-04-16 532 error = -EINVAL;
^1da177e4c3f41 Linus Torvalds 2005-04-16 533 goto exit;
^1da177e4c3f41 Linus Torvalds 2005-04-16 534 }
^1da177e4c3f41 Linus Torvalds 2005-04-16 535
^1da177e4c3f41 Linus Torvalds 2005-04-16 536 /* Copy out the OUT buffer. */
^1da177e4c3f41 Linus Torvalds 2005-04-16 537 if (copy_to_user(data->vi.out,
^1da177e4c3f41 Linus Torvalds 2005-04-16 538 (char *)outp + (long)outp->coda_ioctl.data,
^1da177e4c3f41 Linus Torvalds 2005-04-16 539 outp->coda_ioctl.len)) {
^1da177e4c3f41 Linus Torvalds 2005-04-16 540 error = -EFAULT;
^1da177e4c3f41 Linus Torvalds 2005-04-16 541 goto exit;
^1da177e4c3f41 Linus Torvalds 2005-04-16 542 }
^1da177e4c3f41 Linus Torvalds 2005-04-16 543
^1da177e4c3f41 Linus Torvalds 2005-04-16 544 exit:
936dae4525322f Dan Carpenter 2019-07-16 545 kvfree(inp);
^1da177e4c3f41 Linus Torvalds 2005-04-16 546 return error;
^1da177e4c3f41 Linus Torvalds 2005-04-16 547 }
^1da177e4c3f41 Linus Torvalds 2005-04-16 548

--
0-DAY CI Kernel Test Service
https://01.org/lkp

Next message: Ravi Bangoria: "Re: [PATCH v5 0/8] perf/amd: Zen4 IBS extensions support (tool changes)"
Previous message: Joe Simmons-Talbott: "Re: [PATCH 1/1] iio: Prefer octal over symbolic permissions."
In reply to: kernel test robot: "Re: [PATCH] coda: remove unused variable"
Next in thread: Jan Harkes: "Re: [PATCH] coda: remove unused variable"
Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]