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Message-ID: <202506240149.jkmuq1B9-lkp@intel.com>
Date: Tue, 24 Jun 2025 01:59:46 +0800
From: kernel test robot <lkp@...el.com>
To: Bitterblue Smith <rtl8821cerfe2@...il.com>
Cc: llvm@...ts.linux.dev, oe-kbuild-all@...ts.linux.dev,
linux-kernel@...r.kernel.org, Ping-Ke Shih <pkshih@...ltek.com>
Subject: drivers/net/wireless/realtek/rtlwifi/rtl8192du/phy.c:2039:6:
warning: stack frame size (1152) exceeds limit (1024) in
'rtl92du_phy_iq_calibrate'
Hi Bitterblue,
First bad commit (maybe != root cause):
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 86731a2a651e58953fc949573895f2fa6d456841
commit: 59ea089dcba3b51769280522fd62696d4d436cbc wifi: rtlwifi: Enable the new rtl8192du driver
date: 1 year, 1 month ago
config: powerpc-allyesconfig (https://download.01.org/0day-ci/archive/20250624/202506240149.jkmuq1B9-lkp@intel.com/config)
compiler: clang version 21.0.0git (https://github.com/llvm/llvm-project 875b36a8742437b95f623bab1e0332562c7b4b3f)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250624/202506240149.jkmuq1B9-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@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202506240149.jkmuq1B9-lkp@intel.com/
All warnings (new ones prefixed by >>):
In file included from drivers/net/wireless/realtek/rtlwifi/rtl8192du/phy.c:4:
In file included from drivers/net/wireless/realtek/rtlwifi/rtl8192du/../wifi.h:11:
In file included from include/linux/etherdevice.h:20:
In file included from include/linux/if_ether.h:19:
In file included from include/linux/skbuff.h:17:
In file included from include/linux/bvec.h:10:
In file included from include/linux/highmem.h:8:
In file included from include/linux/cacheflush.h:5:
In file included from arch/powerpc/include/asm/cacheflush.h:7:
In file included from include/linux/mm.h:2210:
include/linux/vmstat.h:508:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
508 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
| ~~~~~~~~~~~~~~~~~~~~~ ^
509 | item];
| ~~~~
include/linux/vmstat.h:515:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
515 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
| ~~~~~~~~~~~~~~~~~~~~~ ^
516 | NR_VM_NUMA_EVENT_ITEMS +
| ~~~~~~~~~~~~~~~~~~~~~~
include/linux/vmstat.h:522:36: warning: arithmetic between different enumeration types ('enum node_stat_item' and 'enum lru_list') [-Wenum-enum-conversion]
522 | return node_stat_name(NR_LRU_BASE + lru) + 3; // skip "nr_"
| ~~~~~~~~~~~ ^ ~~~
include/linux/vmstat.h:527:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
527 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
| ~~~~~~~~~~~~~~~~~~~~~ ^
528 | NR_VM_NUMA_EVENT_ITEMS +
| ~~~~~~~~~~~~~~~~~~~~~~
include/linux/vmstat.h:536:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
536 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
| ~~~~~~~~~~~~~~~~~~~~~ ^
537 | NR_VM_NUMA_EVENT_ITEMS +
| ~~~~~~~~~~~~~~~~~~~~~~
>> drivers/net/wireless/realtek/rtlwifi/rtl8192du/phy.c:2039:6: warning: stack frame size (1152) exceeds limit (1024) in 'rtl92du_phy_iq_calibrate' [-Wframe-larger-than]
2039 | void rtl92du_phy_iq_calibrate(struct ieee80211_hw *hw)
| ^
6 warnings generated.
vim +/rtl92du_phy_iq_calibrate +2039 drivers/net/wireless/realtek/rtlwifi/rtl8192du/phy.c
af46caf0515281a Bitterblue Smith 2024-05-23 2038
af46caf0515281a Bitterblue Smith 2024-05-23 @2039 void rtl92du_phy_iq_calibrate(struct ieee80211_hw *hw)
af46caf0515281a Bitterblue Smith 2024-05-23 2040 {
af46caf0515281a Bitterblue Smith 2024-05-23 2041 long rege94, rege9c, regea4, regeac, regeb4;
af46caf0515281a Bitterblue Smith 2024-05-23 2042 bool is12simular, is13simular, is23simular;
af46caf0515281a Bitterblue Smith 2024-05-23 2043 struct rtl_priv *rtlpriv = rtl_priv(hw);
af46caf0515281a Bitterblue Smith 2024-05-23 2044 struct rtl_hal *rtlhal = &rtlpriv->rtlhal;
af46caf0515281a Bitterblue Smith 2024-05-23 2045 long regebc, regec4, regecc, regtmp = 0;
af46caf0515281a Bitterblue Smith 2024-05-23 2046 struct rtl_phy *rtlphy = &rtlpriv->phy;
af46caf0515281a Bitterblue Smith 2024-05-23 2047 u8 i, final_candidate, indexforchannel;
af46caf0515281a Bitterblue Smith 2024-05-23 2048 bool patha_ok, pathb_ok;
af46caf0515281a Bitterblue Smith 2024-05-23 2049 long result[4][8] = {};
af46caf0515281a Bitterblue Smith 2024-05-23 2050
af46caf0515281a Bitterblue Smith 2024-05-23 2051 RTPRINT(rtlpriv, FINIT, INIT_IQK,
af46caf0515281a Bitterblue Smith 2024-05-23 2052 "IQK:Start!!!channel %d\n", rtlphy->current_channel);
af46caf0515281a Bitterblue Smith 2024-05-23 2053
af46caf0515281a Bitterblue Smith 2024-05-23 2054 final_candidate = 0xff;
af46caf0515281a Bitterblue Smith 2024-05-23 2055 patha_ok = false;
af46caf0515281a Bitterblue Smith 2024-05-23 2056 pathb_ok = false;
af46caf0515281a Bitterblue Smith 2024-05-23 2057 is12simular = false;
af46caf0515281a Bitterblue Smith 2024-05-23 2058 is23simular = false;
af46caf0515281a Bitterblue Smith 2024-05-23 2059 is13simular = false;
af46caf0515281a Bitterblue Smith 2024-05-23 2060 RTPRINT(rtlpriv, FINIT, INIT_IQK,
af46caf0515281a Bitterblue Smith 2024-05-23 2061 "IQK !!!currentband %d\n", rtlhal->current_bandtype);
af46caf0515281a Bitterblue Smith 2024-05-23 2062
af46caf0515281a Bitterblue Smith 2024-05-23 2063 for (i = 0; i < 3; i++) {
af46caf0515281a Bitterblue Smith 2024-05-23 2064 if (rtlhal->current_bandtype == BAND_ON_5G) {
af46caf0515281a Bitterblue Smith 2024-05-23 2065 _rtl92du_phy_iq_calibrate_5g_normal(hw, result, i);
af46caf0515281a Bitterblue Smith 2024-05-23 2066 } else if (rtlhal->current_bandtype == BAND_ON_2_4G) {
af46caf0515281a Bitterblue Smith 2024-05-23 2067 if (IS_92D_SINGLEPHY(rtlhal->version))
af46caf0515281a Bitterblue Smith 2024-05-23 2068 _rtl92du_phy_iq_calibrate(hw, result, i, true);
af46caf0515281a Bitterblue Smith 2024-05-23 2069 else
af46caf0515281a Bitterblue Smith 2024-05-23 2070 _rtl92du_phy_iq_calibrate(hw, result, i, false);
af46caf0515281a Bitterblue Smith 2024-05-23 2071 }
af46caf0515281a Bitterblue Smith 2024-05-23 2072
af46caf0515281a Bitterblue Smith 2024-05-23 2073 if (i == 1) {
af46caf0515281a Bitterblue Smith 2024-05-23 2074 is12simular = _rtl92du_phy_simularity_compare(hw, result,
af46caf0515281a Bitterblue Smith 2024-05-23 2075 0, 1);
af46caf0515281a Bitterblue Smith 2024-05-23 2076 if (is12simular) {
af46caf0515281a Bitterblue Smith 2024-05-23 2077 final_candidate = 0;
af46caf0515281a Bitterblue Smith 2024-05-23 2078 break;
af46caf0515281a Bitterblue Smith 2024-05-23 2079 }
af46caf0515281a Bitterblue Smith 2024-05-23 2080 }
af46caf0515281a Bitterblue Smith 2024-05-23 2081
af46caf0515281a Bitterblue Smith 2024-05-23 2082 if (i == 2) {
af46caf0515281a Bitterblue Smith 2024-05-23 2083 is13simular = _rtl92du_phy_simularity_compare(hw, result,
af46caf0515281a Bitterblue Smith 2024-05-23 2084 0, 2);
af46caf0515281a Bitterblue Smith 2024-05-23 2085 if (is13simular) {
af46caf0515281a Bitterblue Smith 2024-05-23 2086 final_candidate = 0;
af46caf0515281a Bitterblue Smith 2024-05-23 2087 break;
af46caf0515281a Bitterblue Smith 2024-05-23 2088 }
af46caf0515281a Bitterblue Smith 2024-05-23 2089
af46caf0515281a Bitterblue Smith 2024-05-23 2090 is23simular = _rtl92du_phy_simularity_compare(hw, result,
af46caf0515281a Bitterblue Smith 2024-05-23 2091 1, 2);
af46caf0515281a Bitterblue Smith 2024-05-23 2092 if (is23simular) {
af46caf0515281a Bitterblue Smith 2024-05-23 2093 final_candidate = 1;
af46caf0515281a Bitterblue Smith 2024-05-23 2094 } else {
af46caf0515281a Bitterblue Smith 2024-05-23 2095 for (i = 0; i < 8; i++)
af46caf0515281a Bitterblue Smith 2024-05-23 2096 regtmp += result[3][i];
af46caf0515281a Bitterblue Smith 2024-05-23 2097
af46caf0515281a Bitterblue Smith 2024-05-23 2098 if (regtmp != 0)
af46caf0515281a Bitterblue Smith 2024-05-23 2099 final_candidate = 3;
af46caf0515281a Bitterblue Smith 2024-05-23 2100 else
af46caf0515281a Bitterblue Smith 2024-05-23 2101 final_candidate = 0xFF;
af46caf0515281a Bitterblue Smith 2024-05-23 2102 }
af46caf0515281a Bitterblue Smith 2024-05-23 2103 }
af46caf0515281a Bitterblue Smith 2024-05-23 2104 }
af46caf0515281a Bitterblue Smith 2024-05-23 2105
af46caf0515281a Bitterblue Smith 2024-05-23 2106 for (i = 0; i < 4; i++) {
af46caf0515281a Bitterblue Smith 2024-05-23 2107 rege94 = result[i][0];
af46caf0515281a Bitterblue Smith 2024-05-23 2108 rege9c = result[i][1];
af46caf0515281a Bitterblue Smith 2024-05-23 2109 regea4 = result[i][2];
af46caf0515281a Bitterblue Smith 2024-05-23 2110 regeac = result[i][3];
af46caf0515281a Bitterblue Smith 2024-05-23 2111 regeb4 = result[i][4];
af46caf0515281a Bitterblue Smith 2024-05-23 2112 regebc = result[i][5];
af46caf0515281a Bitterblue Smith 2024-05-23 2113 regec4 = result[i][6];
af46caf0515281a Bitterblue Smith 2024-05-23 2114 regecc = result[i][7];
af46caf0515281a Bitterblue Smith 2024-05-23 2115 RTPRINT(rtlpriv, FINIT, INIT_IQK,
af46caf0515281a Bitterblue Smith 2024-05-23 2116 "IQK: rege94=%lx rege9c=%lx regea4=%lx regeac=%lx regeb4=%lx regebc=%lx regec4=%lx regecc=%lx\n",
af46caf0515281a Bitterblue Smith 2024-05-23 2117 rege94, rege9c, regea4, regeac, regeb4, regebc, regec4,
af46caf0515281a Bitterblue Smith 2024-05-23 2118 regecc);
af46caf0515281a Bitterblue Smith 2024-05-23 2119 }
af46caf0515281a Bitterblue Smith 2024-05-23 2120
af46caf0515281a Bitterblue Smith 2024-05-23 2121 if (final_candidate != 0xff) {
af46caf0515281a Bitterblue Smith 2024-05-23 2122 rege94 = result[final_candidate][0];
af46caf0515281a Bitterblue Smith 2024-05-23 2123 rtlphy->reg_e94 = rege94;
af46caf0515281a Bitterblue Smith 2024-05-23 2124 rege9c = result[final_candidate][1];
af46caf0515281a Bitterblue Smith 2024-05-23 2125 rtlphy->reg_e9c = rege9c;
af46caf0515281a Bitterblue Smith 2024-05-23 2126 regea4 = result[final_candidate][2];
af46caf0515281a Bitterblue Smith 2024-05-23 2127 regeac = result[final_candidate][3];
af46caf0515281a Bitterblue Smith 2024-05-23 2128 regeb4 = result[final_candidate][4];
af46caf0515281a Bitterblue Smith 2024-05-23 2129 rtlphy->reg_eb4 = regeb4;
af46caf0515281a Bitterblue Smith 2024-05-23 2130 regebc = result[final_candidate][5];
af46caf0515281a Bitterblue Smith 2024-05-23 2131 rtlphy->reg_ebc = regebc;
af46caf0515281a Bitterblue Smith 2024-05-23 2132 regec4 = result[final_candidate][6];
af46caf0515281a Bitterblue Smith 2024-05-23 2133 regecc = result[final_candidate][7];
af46caf0515281a Bitterblue Smith 2024-05-23 2134
af46caf0515281a Bitterblue Smith 2024-05-23 2135 RTPRINT(rtlpriv, FINIT, INIT_IQK,
af46caf0515281a Bitterblue Smith 2024-05-23 2136 "IQK: final_candidate is %x\n", final_candidate);
af46caf0515281a Bitterblue Smith 2024-05-23 2137 RTPRINT(rtlpriv, FINIT, INIT_IQK,
af46caf0515281a Bitterblue Smith 2024-05-23 2138 "IQK: rege94=%lx rege9c=%lx regea4=%lx regeac=%lx regeb4=%lx regebc=%lx regec4=%lx regecc=%lx\n",
af46caf0515281a Bitterblue Smith 2024-05-23 2139 rege94, rege9c, regea4, regeac, regeb4, regebc, regec4,
af46caf0515281a Bitterblue Smith 2024-05-23 2140 regecc);
af46caf0515281a Bitterblue Smith 2024-05-23 2141
af46caf0515281a Bitterblue Smith 2024-05-23 2142 patha_ok = true;
af46caf0515281a Bitterblue Smith 2024-05-23 2143 pathb_ok = true;
af46caf0515281a Bitterblue Smith 2024-05-23 2144 } else {
af46caf0515281a Bitterblue Smith 2024-05-23 2145 rtlphy->reg_e94 = 0x100;
af46caf0515281a Bitterblue Smith 2024-05-23 2146 rtlphy->reg_eb4 = 0x100; /* X default value */
af46caf0515281a Bitterblue Smith 2024-05-23 2147 rtlphy->reg_e9c = 0x0;
af46caf0515281a Bitterblue Smith 2024-05-23 2148 rtlphy->reg_ebc = 0x0; /* Y default value */
af46caf0515281a Bitterblue Smith 2024-05-23 2149 }
af46caf0515281a Bitterblue Smith 2024-05-23 2150 if (rege94 != 0 /*&& regea4 != 0*/)
af46caf0515281a Bitterblue Smith 2024-05-23 2151 _rtl92du_phy_patha_fill_iqk_matrix(hw, patha_ok, result,
af46caf0515281a Bitterblue Smith 2024-05-23 2152 final_candidate,
af46caf0515281a Bitterblue Smith 2024-05-23 2153 regea4 == 0);
af46caf0515281a Bitterblue Smith 2024-05-23 2154 if (IS_92D_SINGLEPHY(rtlhal->version) &&
af46caf0515281a Bitterblue Smith 2024-05-23 2155 regeb4 != 0 /*&& regec4 != 0*/)
af46caf0515281a Bitterblue Smith 2024-05-23 2156 _rtl92du_phy_pathb_fill_iqk_matrix(hw, pathb_ok, result,
af46caf0515281a Bitterblue Smith 2024-05-23 2157 final_candidate,
af46caf0515281a Bitterblue Smith 2024-05-23 2158 regec4 == 0);
af46caf0515281a Bitterblue Smith 2024-05-23 2159
af46caf0515281a Bitterblue Smith 2024-05-23 2160 if (final_candidate != 0xFF) {
af46caf0515281a Bitterblue Smith 2024-05-23 2161 indexforchannel =
af46caf0515281a Bitterblue Smith 2024-05-23 2162 rtl92d_get_rightchnlplace_for_iqk(rtlphy->current_channel);
af46caf0515281a Bitterblue Smith 2024-05-23 2163
af46caf0515281a Bitterblue Smith 2024-05-23 2164 for (i = 0; i < IQK_MATRIX_REG_NUM; i++)
af46caf0515281a Bitterblue Smith 2024-05-23 2165 rtlphy->iqk_matrix[indexforchannel].value[0][i] =
af46caf0515281a Bitterblue Smith 2024-05-23 2166 result[final_candidate][i];
af46caf0515281a Bitterblue Smith 2024-05-23 2167
af46caf0515281a Bitterblue Smith 2024-05-23 2168 rtlphy->iqk_matrix[indexforchannel].iqk_done = true;
af46caf0515281a Bitterblue Smith 2024-05-23 2169
af46caf0515281a Bitterblue Smith 2024-05-23 2170 rtl_dbg(rtlpriv, COMP_SCAN | COMP_MLME, DBG_LOUD,
af46caf0515281a Bitterblue Smith 2024-05-23 2171 "IQK OK indexforchannel %d\n", indexforchannel);
af46caf0515281a Bitterblue Smith 2024-05-23 2172 }
af46caf0515281a Bitterblue Smith 2024-05-23 2173 }
af46caf0515281a Bitterblue Smith 2024-05-23 2174
:::::: The code at line 2039 was first introduced by commit
:::::: af46caf0515281a30e119b53afb3083fcc5110a9 wifi: rtlwifi: Add rtl8192du/phy.{c,h}
:::::: TO: Bitterblue Smith <rtl8821cerfe2@...il.com>
:::::: CC: Ping-Ke Shih <pkshih@...ltek.com>
--
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