From: Dan Carpenter <dan.carpenter@oracle.com>
To: kbuild@lists.01.org, Kishon Vijay Abraham I <kishon@ti.com>
Cc: lkp@intel.com, kbuild-all@lists.01.org,
linux-kernel@vger.kernel.org,
Vignesh Raghavendra <vigneshr@ti.com>
Subject: [ti:ti-rt-linux-5.10.y 4405/9998] drivers/pci/endpoint/pci-epf-core.c:169 pci_epf_add_vepf() warn: inconsistent returns '&epf_pf->lock'.
Date: Mon, 11 Oct 2021 16:49:07 +0300 [thread overview]
Message-ID: <202110112106.CuCZQB5D-lkp@intel.com> (raw)
tree: git://git.ti.com/ti-linux-kernel/ti-linux-kernel.git ti-rt-linux-5.10.y
head: 7ff055c5f01acc96255948cdd632c72fd78a1f72
commit: 0cf43e35b1743dc43574089fcf3ff71d8cd2ae39 [4405/9998] PCI: endpoint: Add support to add virtual function in endpoint core
config: x86_64-randconfig-m001-20211011 (attached as .config)
compiler: gcc-9 (Debian 9.3.0-22) 9.3.0
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
smatch warnings:
drivers/pci/endpoint/pci-epf-core.c:169 pci_epf_add_vepf() warn: inconsistent returns '&epf_pf->lock'.
vim +169 drivers/pci/endpoint/pci-epf-core.c
0cf43e35b1743d Kishon Vijay Abraham I 2021-03-30 141 int pci_epf_add_vepf(struct pci_epf *epf_pf, struct pci_epf *epf_vf)
0cf43e35b1743d Kishon Vijay Abraham I 2021-03-30 142 {
0cf43e35b1743d Kishon Vijay Abraham I 2021-03-30 143 u32 vfunc_no;
0cf43e35b1743d Kishon Vijay Abraham I 2021-03-30 144
0cf43e35b1743d Kishon Vijay Abraham I 2021-03-30 145 if (IS_ERR_OR_NULL(epf_pf) || IS_ERR_OR_NULL(epf_vf))
0cf43e35b1743d Kishon Vijay Abraham I 2021-03-30 146 return -EINVAL;
0cf43e35b1743d Kishon Vijay Abraham I 2021-03-30 147
0cf43e35b1743d Kishon Vijay Abraham I 2021-03-30 148 if (epf_pf->epc || epf_vf->epc || epf_vf->epf_pf)
0cf43e35b1743d Kishon Vijay Abraham I 2021-03-30 149 return -EBUSY;
0cf43e35b1743d Kishon Vijay Abraham I 2021-03-30 150
0cf43e35b1743d Kishon Vijay Abraham I 2021-03-30 151 if (epf_pf->sec_epc || epf_vf->sec_epc)
0cf43e35b1743d Kishon Vijay Abraham I 2021-03-30 152 return -EBUSY;
0cf43e35b1743d Kishon Vijay Abraham I 2021-03-30 153
0cf43e35b1743d Kishon Vijay Abraham I 2021-03-30 154 mutex_lock(&epf_pf->lock);
0cf43e35b1743d Kishon Vijay Abraham I 2021-03-30 155 vfunc_no = find_first_zero_bit(&epf_pf->vfunction_num_map,
0cf43e35b1743d Kishon Vijay Abraham I 2021-03-30 156 BITS_PER_LONG);
0cf43e35b1743d Kishon Vijay Abraham I 2021-03-30 157 if (vfunc_no >= BITS_PER_LONG)
0cf43e35b1743d Kishon Vijay Abraham I 2021-03-30 158 return -EINVAL;
Unlock before returning.
0cf43e35b1743d Kishon Vijay Abraham I 2021-03-30 159
0cf43e35b1743d Kishon Vijay Abraham I 2021-03-30 160 set_bit(vfunc_no, &epf_pf->vfunction_num_map);
0cf43e35b1743d Kishon Vijay Abraham I 2021-03-30 161 epf_vf->vfunc_no = vfunc_no;
0cf43e35b1743d Kishon Vijay Abraham I 2021-03-30 162
0cf43e35b1743d Kishon Vijay Abraham I 2021-03-30 163 epf_vf->epf_pf = epf_pf;
0cf43e35b1743d Kishon Vijay Abraham I 2021-03-30 164 epf_vf->is_vf = true;
0cf43e35b1743d Kishon Vijay Abraham I 2021-03-30 165
0cf43e35b1743d Kishon Vijay Abraham I 2021-03-30 166 list_add_tail(&epf_vf->list, &epf_pf->pci_vepf);
0cf43e35b1743d Kishon Vijay Abraham I 2021-03-30 167 mutex_unlock(&epf_pf->lock);
0cf43e35b1743d Kishon Vijay Abraham I 2021-03-30 168
0cf43e35b1743d Kishon Vijay Abraham I 2021-03-30 @169 return 0;
0cf43e35b1743d Kishon Vijay Abraham I 2021-03-30 170 }
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
reply other threads:[~2021-10-11 13:50 UTC|newest]
Thread overview: [no followups] expand[flat|nested] mbox.gz Atom feed
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=202110112106.CuCZQB5D-lkp@intel.com \
--to=dan.carpenter@oracle.com \
--cc=kbuild-all@lists.01.org \
--cc=kbuild@lists.01.org \
--cc=kishon@ti.com \
--cc=linux-kernel@vger.kernel.org \
--cc=lkp@intel.com \
--cc=vigneshr@ti.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox