CC: [email protected] CC: [email protected] BCC: [email protected] CC: [email protected] TO: Jonathan Marek <[email protected]> CC: Mauro Carvalho Chehab <[email protected]> CC: [email protected] CC: Robert Foss <[email protected]> CC: "Bryan O'Donoghue" <[email protected]> CC: Hans Verkuil <[email protected]>
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 57ae8a492116910bad2b3497ffe555b3a4b4180f commit: dd89115a7c1cf31223cbeab2430d03bf202c8b22 media: camss: csiphy-3ph: don't print HW version as an error date: 3 months ago :::::: branch date: 8 hours ago :::::: commit date: 3 months ago config: arm-randconfig-c002-20220427 (https://download.01.org/0day-ci/archive/20220501/[email protected]/config) compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 1cddcfdc3c683b393df1a5c9063252eb60e52818) 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 # install arm cross compiling tool for clang build # apt-get install binutils-arm-linux-gnueabi # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=dd89115a7c1cf31223cbeab2430d03bf202c8b22 git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout dd89115a7c1cf31223cbeab2430d03bf202c8b22 # save the config file COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=arm clang-analyzer If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <[email protected]> clang-analyzer warnings: (new ones prefixed by >>) ret = -EINVAL; ^ ~~~~~~~ drivers/target/target_core_configfs.c:2096:5: note: Value stored to 'ret' is never read ret = -EINVAL; ^ ~~~~~~~ drivers/target/target_core_configfs.c:2218:17: warning: Value stored to 'hba' during its initialization is never read [clang-analyzer-deadcode.DeadStores] struct se_hba *hba = dev->se_hba; ^~~ ~~~~~~~~~~~ drivers/target/target_core_configfs.c:2218:17: note: Value stored to 'hba' during its initialization is never read struct se_hba *hba = dev->se_hba; ^~~ ~~~~~~~~~~~ drivers/target/target_core_configfs.c:2258:17: warning: Value stored to 'hba' during its initialization is never read [clang-analyzer-deadcode.DeadStores] struct se_hba *hba = dev->se_hba; ^~~ ~~~~~~~~~~~ drivers/target/target_core_configfs.c:2258:17: note: Value stored to 'hba' during its initialization is never read struct se_hba *hba = dev->se_hba; ^~~ ~~~~~~~~~~~ drivers/target/target_core_configfs.c:2340:17: warning: Value stored to 'hba' during its initialization is never read [clang-analyzer-deadcode.DeadStores] struct se_hba *hba = dev->se_hba; ^~~ ~~~~~~~~~~~ drivers/target/target_core_configfs.c:2340:17: note: Value stored to 'hba' during its initialization is never read struct se_hba *hba = dev->se_hba; ^~~ ~~~~~~~~~~~ drivers/target/target_core_configfs.c:2395:3: warning: Value stored to 'move' is never read [clang-analyzer-deadcode.DeadStores] move = 1; ^ ~ drivers/target/target_core_configfs.c:2395:3: note: Value stored to 'move' is never read move = 1; ^ ~ drivers/target/target_core_configfs.c:2636:23: warning: Value stored to 'alua_lu_gp_cg' during its initialization is never read [clang-analyzer-deadcode.DeadStores] struct config_group *alua_lu_gp_cg = &lu_gp->lu_gp_group; ^~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~ drivers/target/target_core_configfs.c:2636:23: note: Value stored to 'alua_lu_gp_cg' during its initialization is never read struct config_group *alua_lu_gp_cg = &lu_gp->lu_gp_group; ^~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~ drivers/target/target_core_configfs.c:2740:2: warning: Value stored to 'alua_lu_gp_ci' is never read [clang-analyzer-deadcode.DeadStores] alua_lu_gp_ci = &alua_lu_gp_cg->cg_item; ^ ~~~~~~~~~~~~~~~~~~~~~~~ drivers/target/target_core_configfs.c:2740:2: note: Value stored to 'alua_lu_gp_ci' is never read alua_lu_gp_ci = &alua_lu_gp_cg->cg_item; ^ ~~~~~~~~~~~~~~~~~~~~~~~ drivers/target/target_core_configfs.c:2757:25: warning: Value stored to 'lu_gp' during its initialization is never read [clang-analyzer-deadcode.DeadStores] struct t10_alua_lu_gp *lu_gp = container_of(to_config_group(item), ^~~~~ drivers/target/target_core_configfs.c:2757:25: note: Value stored to 'lu_gp' during its initialization is never read struct t10_alua_lu_gp *lu_gp = container_of(to_config_group(item), ^~~~~ drivers/target/target_core_configfs.c:3035:23: warning: Value stored to 'alua_tg_pt_gp_cg' during its initialization is never read [clang-analyzer-deadcode.DeadStores] struct config_group *alua_tg_pt_gp_cg = &tg_pt_gp->tg_pt_gp_group; ^~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/target/target_core_configfs.c:3035:23: note: Value stored to 'alua_tg_pt_gp_cg' during its initialization is never read struct config_group *alua_tg_pt_gp_cg = &tg_pt_gp->tg_pt_gp_group; ^~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/target/target_core_configfs.c:3172:2: warning: Value stored to 'alua_tg_pt_gp_ci' is never read [clang-analyzer-deadcode.DeadStores] alua_tg_pt_gp_ci = &alua_tg_pt_gp_cg->cg_item; ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/target/target_core_configfs.c:3172:2: note: Value stored to 'alua_tg_pt_gp_ci' is never read alua_tg_pt_gp_ci = &alua_tg_pt_gp_cg->cg_item; ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/target/target_core_configfs.c:3188:28: warning: Value stored to 'tg_pt_gp' during its initialization is never read [clang-analyzer-deadcode.DeadStores] struct t10_alua_tg_pt_gp *tg_pt_gp = container_of(to_config_group(item), ^~~~~~~~ drivers/target/target_core_configfs.c:3188:28: note: Value stored to 'tg_pt_gp' during its initialization is never read struct t10_alua_tg_pt_gp *tg_pt_gp = container_of(to_config_group(item), ^~~~~~~~ 5 warnings generated. drivers/media/platform/qcom/camss/camss-csid-170.c:398:3: warning: Value stored to 'val' is never read [clang-analyzer-deadcode.DeadStores] val = 0; ^ ~ drivers/media/platform/qcom/camss/camss-csid-170.c:398:3: note: Value stored to 'val' is never read val = 0; ^ ~ drivers/media/platform/qcom/camss/camss-csid-170.c:478:2: warning: Value stored to 'hw_gen' is never read [clang-analyzer-deadcode.DeadStores] hw_gen = (hw_version >> HW_VERSION_GENERATION) & 0xF; ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/media/platform/qcom/camss/camss-csid-170.c:478:2: note: Value stored to 'hw_gen' is never read hw_gen = (hw_version >> HW_VERSION_GENERATION) & 0xF; ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/media/platform/qcom/camss/camss-csid-170.c:479:2: warning: Value stored to 'hw_rev' is never read [clang-analyzer-deadcode.DeadStores] hw_rev = (hw_version >> HW_VERSION_REVISION) & 0xFFF; ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/media/platform/qcom/camss/camss-csid-170.c:479:2: note: Value stored to 'hw_rev' is never read hw_rev = (hw_version >> HW_VERSION_REVISION) & 0xFFF; ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/media/platform/qcom/camss/camss-csid-170.c:480:2: warning: Value stored to 'hw_step' is never read [clang-analyzer-deadcode.DeadStores] hw_step = (hw_version >> HW_VERSION_STEPPING) & 0xFFFF; ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/media/platform/qcom/camss/camss-csid-170.c:480:2: note: Value stored to 'hw_step' is never read hw_step = (hw_version >> HW_VERSION_STEPPING) & 0xFFFF; ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Suppressed 1 warnings (1 with check filters). 2 warnings generated. drivers/media/platform/qcom/camss/camss-csiphy-2ph-1-0.c:32:5: warning: Value stored to 'hw_version' during its initialization is never read [clang-analyzer-deadcode.DeadStores] u8 hw_version = readl_relaxed(csiphy->base + ^~~~~~~~~~ drivers/media/platform/qcom/camss/camss-csiphy-2ph-1-0.c:32:5: note: Value stored to 'hw_version' during its initialization is never read u8 hw_version = readl_relaxed(csiphy->base + ^~~~~~~~~~ Suppressed 1 warnings (1 with check filters). 2 warnings generated. >> drivers/media/platform/qcom/camss/camss-csiphy-3ph-1-0.c:163:2: warning: >> Value stored to 'hw_version' is never read >> [clang-analyzer-deadcode.DeadStores] hw_version |= readl_relaxed(csiphy->base + ^ drivers/media/platform/qcom/camss/camss-csiphy-3ph-1-0.c:163:2: note: Value stored to 'hw_version' is never read Suppressed 1 warnings (1 with check filters). 2 warnings generated. include/media/v4l2-subdev.h:1000:10: warning: Access to field 'pads' results in a dereference of a null pointer (loaded from variable 'state') [clang-analyzer-core.NullDereference] return &state->pads[pad].try_fmt; ^ drivers/media/platform/qcom/camss/camss-csiphy.c:781:8: note: Calling 'csiphy_init_formats' ret = csiphy_init_formats(sd, NULL); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/media/platform/qcom/camss/camss-csiphy.c:545:12: note: 'fh' is null .which = fh ? V4L2_SUBDEV_FORMAT_TRY : ^~ drivers/media/platform/qcom/camss/camss-csiphy.c:545:12: note: '?' condition is false drivers/media/platform/qcom/camss/camss-csiphy.c:554:31: note: 'fh' is null return csiphy_set_format(sd, fh ? fh->state : NULL, &format); ^~ drivers/media/platform/qcom/camss/camss-csiphy.c:554:31: note: '?' condition is false drivers/media/platform/qcom/camss/camss-csiphy.c:554:31: note: Passing null pointer value via 2nd parameter 'sd_state' return csiphy_set_format(sd, fh ? fh->state : NULL, &format); ^~ drivers/media/platform/qcom/camss/camss-csiphy.c:554:9: note: Calling 'csiphy_set_format' return csiphy_set_format(sd, fh ? fh->state : NULL, &format); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/media/platform/qcom/camss/camss-csiphy.c:509:6: note: 'format' is not equal to NULL if (format == NULL) ^~~~~~ drivers/media/platform/qcom/camss/camss-csiphy.c:509:2: note: Taking false branch if (format == NULL) ^ drivers/media/platform/qcom/camss/camss-csiphy.c:517:6: note: Assuming field 'pad' is equal to MSM_CSIPHY_PAD_SINK if (fmt->pad == MSM_CSIPHY_PAD_SINK) { ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/media/platform/qcom/camss/camss-csiphy.c:517:2: note: Taking true branch if (fmt->pad == MSM_CSIPHY_PAD_SINK) { ^ drivers/media/platform/qcom/camss/camss-csiphy.c:518:40: note: Passing null pointer value via 2nd parameter 'sd_state' format = __csiphy_get_format(csiphy, sd_state, ^~~~~~~~ drivers/media/platform/qcom/camss/camss-csiphy.c:518:12: note: Calling '__csiphy_get_format' format = __csiphy_get_format(csiphy, sd_state, ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/media/platform/qcom/camss/camss-csiphy.c:345:6: note: Assuming 'which' is equal to V4L2_SUBDEV_FORMAT_TRY if (which == V4L2_SUBDEV_FORMAT_TRY) ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/media/platform/qcom/camss/camss-csiphy.c:345:2: note: Taking true branch if (which == V4L2_SUBDEV_FORMAT_TRY) ^ drivers/media/platform/qcom/camss/camss-csiphy.c:346:54: note: Passing null pointer value via 2nd parameter 'state' return v4l2_subdev_get_try_format(&csiphy->subdev, sd_state, ^~~~~~~~ drivers/media/platform/qcom/camss/camss-csiphy.c:346:10: note: Calling 'v4l2_subdev_get_try_format' return v4l2_subdev_get_try_format(&csiphy->subdev, sd_state, ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/media/v4l2-subdev.h:998:14: note: Assuming 'pad' is < field 'num_pads' if (WARN_ON(pad >= sd->entity.num_pads)) ^ include/asm-generic/bug.h:121:25: note: expanded from macro 'WARN_ON' int __ret_warn_on = !!(condition); \ ^~~~~~~~~ include/media/v4l2-subdev.h:998:6: note: Taking false branch if (WARN_ON(pad >= sd->entity.num_pads)) ^ include/asm-generic/bug.h:122:2: note: expanded from macro 'WARN_ON' if (unlikely(__ret_warn_on)) \ ^ include/media/v4l2-subdev.h:998:2: note: Taking false branch if (WARN_ON(pad >= sd->entity.num_pads)) ^ include/media/v4l2-subdev.h:1000:10: note: Access to field 'pads' results in a dereference of a null pointer (loaded from variable 'state') return &state->pads[pad].try_fmt; ^~~~~ Suppressed 1 warnings (1 with check filters). 1 warning generated. drivers/tty/vt/vt.c:586:21: warning: Value stored to 'uniscr' during its initialization is never read [clang-analyzer-deadcode.DeadStores] struct uni_screen *uniscr = get_vc_uniscr(vc); ^~~~~~ drivers/tty/vt/vt.c:586:21: note: Value stored to 'uniscr' during its initialization is never read struct uni_screen *uniscr = get_vc_uniscr(vc); ^~~~~~ 17 warnings generated. drivers/tty/serial/serial_core.c:160:17: warning: Access to field 'rs485_config' results in a dereference of a null pointer (loaded from variable 'uport') [clang-analyzer-core.NullDereference] int rs485_on = uport->rs485_config && ^ drivers/tty/serial/serial_core.c:2232:2: note: Value assigned to field 'uart_port' mutex_lock(&port->mutex); ^~~~~~~~~~~~~~~~~~~~~~~~ drivers/tty/serial/serial_core.c:2235:6: note: Assuming field 'suspended' is not equal to 0 if (!uport->suspended && device_may_wakeup(tty_dev)) { ^~~~~~~~~~~~~~~~~ drivers/tty/serial/serial_core.c:2235:24: note: Left side of '&&' is false if (!uport->suspended && device_may_wakeup(tty_dev)) { ^ drivers/tty/serial/serial_core.c:2248:6: note: Assuming field 'cons' is null if (uart_console(uport)) { ^ include/linux/serial_core.h:24:3: note: expanded from macro 'uart_console' ((port)->cons && (port)->cons->index == (port)->line) ^~~~~~~~~~~~ vim +/hw_version +163 drivers/media/platform/qcom/camss/camss-csiphy-3ph-1-0.c 2f8b67195e4839 Robert Foss 2021-03-16 148 4138a88b6093e1 Todor Tomov 2018-07-25 149 static void csiphy_hw_version_read(struct csiphy_device *csiphy, 4138a88b6093e1 Todor Tomov 2018-07-25 150 struct device *dev) 4138a88b6093e1 Todor Tomov 2018-07-25 151 { 4138a88b6093e1 Todor Tomov 2018-07-25 152 u32 hw_version; 4138a88b6093e1 Todor Tomov 2018-07-25 153 4138a88b6093e1 Todor Tomov 2018-07-25 154 writel(CSIPHY_3PH_CMN_CSI_COMMON_CTRL6_SHOW_REV_ID, 4138a88b6093e1 Todor Tomov 2018-07-25 155 csiphy->base + CSIPHY_3PH_CMN_CSI_COMMON_CTRLn(6)); 4138a88b6093e1 Todor Tomov 2018-07-25 156 4138a88b6093e1 Todor Tomov 2018-07-25 157 hw_version = readl_relaxed(csiphy->base + 4138a88b6093e1 Todor Tomov 2018-07-25 158 CSIPHY_3PH_CMN_CSI_COMMON_STATUSn(12)); 4138a88b6093e1 Todor Tomov 2018-07-25 159 hw_version |= readl_relaxed(csiphy->base + 4138a88b6093e1 Todor Tomov 2018-07-25 160 CSIPHY_3PH_CMN_CSI_COMMON_STATUSn(13)) << 8; 4138a88b6093e1 Todor Tomov 2018-07-25 161 hw_version |= readl_relaxed(csiphy->base + 4138a88b6093e1 Todor Tomov 2018-07-25 162 CSIPHY_3PH_CMN_CSI_COMMON_STATUSn(14)) << 16; 4138a88b6093e1 Todor Tomov 2018-07-25 @163 hw_version |= readl_relaxed(csiphy->base + 4138a88b6093e1 Todor Tomov 2018-07-25 164 CSIPHY_3PH_CMN_CSI_COMMON_STATUSn(15)) << 24; 4138a88b6093e1 Todor Tomov 2018-07-25 165 dd89115a7c1cf3 Jonathan Marek 2021-12-22 166 dev_dbg(dev, "CSIPHY 3PH HW Version = 0x%08x\n", hw_version); 4138a88b6093e1 Todor Tomov 2018-07-25 167 } 4138a88b6093e1 Todor Tomov 2018-07-25 168 :::::: The code at line 163 was first introduced by commit :::::: 4138a88b6093e1f8bf1b8a95c653bec6c854f119 media: camss: csiphy: Add support for 8x96 :::::: TO: Todor Tomov <[email protected]> :::::: CC: Mauro Carvalho Chehab <[email protected]> -- 0-DAY CI Kernel Test Service https://01.org/lkp _______________________________________________ kbuild mailing list -- [email protected] To unsubscribe send an email to [email protected]
