From mboxrd@z Thu Jan 1 00:00:00 1970 Content-Type: multipart/mixed; boundary="===============4960560659109899473==" MIME-Version: 1.0 From: kernel test robot Subject: [linux-next:master 5133/11953] drivers/net/ethernet/mscc/ocelot.c:1778 ocelot_port_update_stats() error: uninitialized symbol 'err'. Date: Mon, 14 Mar 2022 11:31:15 +0800 Message-ID: <202203141139.KXUKjsZA-lkp@intel.com> List-Id: To: kbuild@lists.01.org --===============4960560659109899473== Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable CC: kbuild-all(a)lists.01.org BCC: lkp(a)intel.com CC: Linux Memory Management List TO: Colin Foster CC: Vladimir Oltean tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git= master head: 71941773e143369a73c9c4a3b62fbb60736a1182 commit: d87b1c08f38a2ce40cf559df36c107a2e6c16a8f [5133/11953] net: mscc: oc= elot: use bulk reads for stats :::::: branch date: 4 days ago :::::: commit date: 4 weeks ago config: riscv-randconfig-m031-20220313 (https://download.01.org/0day-ci/arc= hive/20220314/202203141139.KXUKjsZA-lkp(a)intel.com/config) compiler: riscv64-linux-gcc (GCC) 11.2.0 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot Reported-by: Dan Carpenter smatch warnings: drivers/net/ethernet/mscc/ocelot.c:1778 ocelot_port_update_stats() error: u= ninitialized symbol 'err'. drivers/net/ethernet/mscc/ocelot.c:1796 ocelot_check_stats_work() error: un= initialized symbol 'err'. vim +/err +1778 drivers/net/ethernet/mscc/ocelot.c a556c76adc052c9 Alexandre Belloni 2018-05-14 1747 = 7fbf6795d127a3b Colin Foster 2022-02-10 1748 /* Caller must hold &oc= elot->stats_lock */ d87b1c08f38a2ce Colin Foster 2022-02-13 1749 static int ocelot_port_= update_stats(struct ocelot *ocelot, int port) a556c76adc052c9 Alexandre Belloni 2018-05-14 1750 { d87b1c08f38a2ce Colin Foster 2022-02-13 1751 unsigned int idx =3D p= ort * ocelot->num_stats; d87b1c08f38a2ce Colin Foster 2022-02-13 1752 struct ocelot_stats_re= gion *region; d87b1c08f38a2ce Colin Foster 2022-02-13 1753 int err, j; a556c76adc052c9 Alexandre Belloni 2018-05-14 1754 = a556c76adc052c9 Alexandre Belloni 2018-05-14 1755 /* Configure the port = to read the stats from */ e27d785e60b6b1d Colin Foster 2022-02-13 1756 ocelot_write(ocelot, S= YS_STAT_CFG_STAT_VIEW(port), SYS_STAT_CFG); a556c76adc052c9 Alexandre Belloni 2018-05-14 1757 = d87b1c08f38a2ce Colin Foster 2022-02-13 1758 list_for_each_entry(re= gion, &ocelot->stats_regions, node) { d87b1c08f38a2ce Colin Foster 2022-02-13 1759 err =3D ocelot_bulk_r= ead_rix(ocelot, SYS_COUNT_RX_OCTETS, d87b1c08f38a2ce Colin Foster 2022-02-13 1760 region->offset,= region->buf, d87b1c08f38a2ce Colin Foster 2022-02-13 1761 region->count); d87b1c08f38a2ce Colin Foster 2022-02-13 1762 if (err) d87b1c08f38a2ce Colin Foster 2022-02-13 1763 return err; a556c76adc052c9 Alexandre Belloni 2018-05-14 1764 = d87b1c08f38a2ce Colin Foster 2022-02-13 1765 for (j =3D 0; j < reg= ion->count; j++) { d87b1c08f38a2ce Colin Foster 2022-02-13 1766 u64 *stat =3D &ocelo= t->stats[idx + j]; d87b1c08f38a2ce Colin Foster 2022-02-13 1767 u64 val =3D region->= buf[j]; a556c76adc052c9 Alexandre Belloni 2018-05-14 1768 = d87b1c08f38a2ce Colin Foster 2022-02-13 1769 if (val < (*stat & U= 32_MAX)) d87b1c08f38a2ce Colin Foster 2022-02-13 1770 *stat +=3D (u64)1 <= < 32; d87b1c08f38a2ce Colin Foster 2022-02-13 1771 = d87b1c08f38a2ce Colin Foster 2022-02-13 1772 *stat =3D (*stat & ~= (u64)U32_MAX) + val; d87b1c08f38a2ce Colin Foster 2022-02-13 1773 } a556c76adc052c9 Alexandre Belloni 2018-05-14 1774 = d87b1c08f38a2ce Colin Foster 2022-02-13 1775 idx +=3D region->coun= t; a556c76adc052c9 Alexandre Belloni 2018-05-14 1776 } d87b1c08f38a2ce Colin Foster 2022-02-13 1777 = d87b1c08f38a2ce Colin Foster 2022-02-13 @1778 return err; 1e1caa9735f90b5 Claudiu Manoil 2019-04-16 1779 } 1e1caa9735f90b5 Claudiu Manoil 2019-04-16 1780 = 1e1caa9735f90b5 Claudiu Manoil 2019-04-16 1781 static void ocelot_chec= k_stats_work(struct work_struct *work) 1e1caa9735f90b5 Claudiu Manoil 2019-04-16 1782 { 1e1caa9735f90b5 Claudiu Manoil 2019-04-16 1783 struct delayed_work *d= el_work =3D to_delayed_work(work); 1e1caa9735f90b5 Claudiu Manoil 2019-04-16 1784 struct ocelot *ocelot = =3D container_of(del_work, struct ocelot, 1e1caa9735f90b5 Claudiu Manoil 2019-04-16 1785 stats_work); d87b1c08f38a2ce Colin Foster 2022-02-13 1786 int i, err; 1e1caa9735f90b5 Claudiu Manoil 2019-04-16 1787 = 7fbf6795d127a3b Colin Foster 2022-02-10 1788 mutex_lock(&ocelot->st= ats_lock); d87b1c08f38a2ce Colin Foster 2022-02-13 1789 for (i =3D 0; i < ocel= ot->num_phys_ports; i++) { d87b1c08f38a2ce Colin Foster 2022-02-13 1790 err =3D ocelot_port_u= pdate_stats(ocelot, i); d87b1c08f38a2ce Colin Foster 2022-02-13 1791 if (err) d87b1c08f38a2ce Colin Foster 2022-02-13 1792 break; d87b1c08f38a2ce Colin Foster 2022-02-13 1793 } 7fbf6795d127a3b Colin Foster 2022-02-10 1794 mutex_unlock(&ocelot->= stats_lock); 1e1caa9735f90b5 Claudiu Manoil 2019-04-16 1795 = d87b1c08f38a2ce Colin Foster 2022-02-13 @1796 if (err) d87b1c08f38a2ce Colin Foster 2022-02-13 1797 dev_err(ocelot->dev, = "Error %d updating ethtool stats\n", err); d87b1c08f38a2ce Colin Foster 2022-02-13 1798 = a556c76adc052c9 Alexandre Belloni 2018-05-14 1799 queue_delayed_work(oce= lot->stats_queue, &ocelot->stats_work, a556c76adc052c9 Alexandre Belloni 2018-05-14 1800 OCELOT_STATS_CHEC= K_DELAY); a556c76adc052c9 Alexandre Belloni 2018-05-14 1801 } a556c76adc052c9 Alexandre Belloni 2018-05-14 1802 = --- 0-DAY CI Kernel Test Service https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org --===============4960560659109899473==--