From mboxrd@z Thu Jan 1 00:00:00 1970 Content-Type: multipart/mixed; boundary="===============0591977837335055714==" MIME-Version: 1.0 From: kernel test robot Subject: drivers/net/dsa/mt7530.c:908 mt7530_set_ageing_time() error: uninitialized symbol 'age_count'. Date: Thu, 25 Nov 2021 22:55:02 +0800 Message-ID: <202111252238.BmosAAYv-lkp@intel.com> List-Id: To: kbuild@lists.01.org --===============0591977837335055714== Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable CC: kbuild-all(a)lists.01.org CC: linux-kernel(a)vger.kernel.org TO: DENG Qingfang CC: Andrew Lunn CC: Vladimir Oltean CC: Florian Fainelli tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git = master head: 5f53fa508db098c9d372423a6dac31c8a5679cdf commit: ea6d5c924e391872d402acac38461a5f8261e57f net: dsa: mt7530: support = setting ageing time date: 12 months ago :::::: branch date: 21 hours ago :::::: commit date: 12 months ago config: ia64-randconfig-m031-20211122 (https://download.01.org/0day-ci/arch= ive/20211125/202111252238.BmosAAYv-lkp(a)intel.com/config) compiler: ia64-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 New smatch warnings: drivers/net/dsa/mt7530.c:908 mt7530_set_ageing_time() error: uninitialized = symbol 'age_count'. drivers/net/dsa/mt7530.c:908 mt7530_set_ageing_time() error: uninitialized = symbol 'age_unit'. Old smatch warnings: drivers/net/dsa/mt7530.c:469 mt7530_pad_clk_setup() error: uninitialized sy= mbol 'ncpo1'. vim +/age_count +908 drivers/net/dsa/mt7530.c b8f126a8d54318b Sean Wang 2017-04-07 872 = ea6d5c924e39187 DENG Qingfang 2020-12-08 873 static int ea6d5c924e39187 DENG Qingfang 2020-12-08 874 mt7530_set_ageing_time(struc= t dsa_switch *ds, unsigned int msecs) ea6d5c924e39187 DENG Qingfang 2020-12-08 875 { ea6d5c924e39187 DENG Qingfang 2020-12-08 876 struct mt7530_priv *priv = =3D ds->priv; ea6d5c924e39187 DENG Qingfang 2020-12-08 877 unsigned int secs =3D msecs= / 1000; ea6d5c924e39187 DENG Qingfang 2020-12-08 878 unsigned int tmp_age_count; ea6d5c924e39187 DENG Qingfang 2020-12-08 879 unsigned int error =3D -1; ea6d5c924e39187 DENG Qingfang 2020-12-08 880 unsigned int age_count; ea6d5c924e39187 DENG Qingfang 2020-12-08 881 unsigned int age_unit; ea6d5c924e39187 DENG Qingfang 2020-12-08 882 = ea6d5c924e39187 DENG Qingfang 2020-12-08 883 /* Applied timer is (AGE_CN= T + 1) * (AGE_UNIT + 1) seconds */ ea6d5c924e39187 DENG Qingfang 2020-12-08 884 if (secs < 1 || secs > (AGE= _CNT_MAX + 1) * (AGE_UNIT_MAX + 1)) ea6d5c924e39187 DENG Qingfang 2020-12-08 885 return -ERANGE; ea6d5c924e39187 DENG Qingfang 2020-12-08 886 = ea6d5c924e39187 DENG Qingfang 2020-12-08 887 /* iterate through all poss= ible age_count to find the closest pair */ ea6d5c924e39187 DENG Qingfang 2020-12-08 888 for (tmp_age_count =3D 0; t= mp_age_count <=3D AGE_CNT_MAX; ++tmp_age_count) { ea6d5c924e39187 DENG Qingfang 2020-12-08 889 unsigned int tmp_age_unit = =3D secs / (tmp_age_count + 1) - 1; ea6d5c924e39187 DENG Qingfang 2020-12-08 890 = ea6d5c924e39187 DENG Qingfang 2020-12-08 891 if (tmp_age_unit <=3D AGE_= UNIT_MAX) { ea6d5c924e39187 DENG Qingfang 2020-12-08 892 unsigned int tmp_error = =3D secs - ea6d5c924e39187 DENG Qingfang 2020-12-08 893 (tmp_age_count + 1) * (t= mp_age_unit + 1); ea6d5c924e39187 DENG Qingfang 2020-12-08 894 = ea6d5c924e39187 DENG Qingfang 2020-12-08 895 /* found a closer pair */ ea6d5c924e39187 DENG Qingfang 2020-12-08 896 if (error > tmp_error) { ea6d5c924e39187 DENG Qingfang 2020-12-08 897 error =3D tmp_error; ea6d5c924e39187 DENG Qingfang 2020-12-08 898 age_count =3D tmp_age_co= unt; ea6d5c924e39187 DENG Qingfang 2020-12-08 899 age_unit =3D tmp_age_uni= t; ea6d5c924e39187 DENG Qingfang 2020-12-08 900 } ea6d5c924e39187 DENG Qingfang 2020-12-08 901 = ea6d5c924e39187 DENG Qingfang 2020-12-08 902 /* found the exact match,= so break the loop */ ea6d5c924e39187 DENG Qingfang 2020-12-08 903 if (!error) ea6d5c924e39187 DENG Qingfang 2020-12-08 904 break; ea6d5c924e39187 DENG Qingfang 2020-12-08 905 } ea6d5c924e39187 DENG Qingfang 2020-12-08 906 } ea6d5c924e39187 DENG Qingfang 2020-12-08 907 = ea6d5c924e39187 DENG Qingfang 2020-12-08 @908 mt7530_write(priv, MT7530_A= AC, AGE_CNT(age_count) | AGE_UNIT(age_unit)); ea6d5c924e39187 DENG Qingfang 2020-12-08 909 = ea6d5c924e39187 DENG Qingfang 2020-12-08 910 return 0; ea6d5c924e39187 DENG Qingfang 2020-12-08 911 } ea6d5c924e39187 DENG Qingfang 2020-12-08 912 = --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org --===============0591977837335055714==--