Hi Carrie.Cai, FYI, the error/warning still remains. tree: https://gitee.com/openeuler/kernel.git OLK-6.6 head: 75c81bcddd82381fbd4cef477a5b56eb2fe56697 commit: 811debd4ea52033d7393d4a7de2be11f71c70348 [1834/1834] add support for Mont-TSSE Driver config: x86_64-randconfig-101-20250122 (https://download.01.org/0day-ci/archive/20250122/202501220636.mvJm5Jtb-lkp@i...) compiler: clang version 19.1.3 (https://github.com/llvm/llvm-project ab51eccf88f5321e7c60591c5546b254b6afab99) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250122/202501220636.mvJm5Jtb-lkp@i...) 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@intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202501220636.mvJm5Jtb-lkp@intel.com/ All warnings (new ones prefixed by >>): In file included from drivers/crypto/montage/tsse/tsse_dev_mgr.c:13: In file included from include/linux/iommu.h:10: In file included from include/linux/scatterlist.h:8: In file included from include/linux/mm.h:2193: 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_" | ~~~~~~~~~~~ ^ ~~~ In file included from drivers/crypto/montage/tsse/tsse_dev_mgr.c:15:

...

drivers/crypto/montage/tsse/tsse_dev.h:84:6: warning: variable 'cpu' set but not used [-Wunused-but-set-variable] 84 | int cpu, node; | ^ drivers/crypto/montage/tsse/tsse_dev_mgr.c:107:5: warning: no previous prototype for function 'tsse_stop_dev' [-Wmissing-prototypes] 107 | int tsse_stop_dev(struct tsse_dev *tdev, bool busy_exit) | ^ drivers/crypto/montage/tsse/tsse_dev_mgr.c:107:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 107 | int tsse_stop_dev(struct tsse_dev *tdev, bool busy_exit) | ^ | static drivers/crypto/montage/tsse/tsse_dev_mgr.c:220:2: warning: variable 'ptr' is used uninitialized whenever 'for' loop exits because its condition is false [-Wsometimes-uninitialized] 220 | list_for_each(itr, &tsse_dev_table) { | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/list.h:687:27: note: expanded from macro 'list_for_each' 687 | for (pos = (head)->next; !list_is_head(pos, (head)); pos = pos->next) | ^~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/crypto/montage/tsse/tsse_dev_mgr.c:227:9: note: uninitialized use occurs here 227 | return ptr; | ^~~ drivers/crypto/montage/tsse/tsse_dev_mgr.c:220:2: note: remove the condition if it is always true 220 | list_for_each(itr, &tsse_dev_table) { | ^ include/linux/list.h:687:27: note: expanded from macro 'list_for_each' 687 | for (pos = (head)->next; !list_is_head(pos, (head)); pos = pos->next) | ^ drivers/crypto/montage/tsse/tsse_dev_mgr.c:216:22: note: initialize the variable 'ptr' to silence this warning 216 | struct tsse_dev *ptr; | ^ | = NULL drivers/crypto/montage/tsse/tsse_dev_mgr.c:37:20: warning: unused function 'tsse_list_add_tail' [-Wunused-function] 37 | static inline void tsse_list_add_tail(struct list_head *new, | ^~~~~~~~~~~~~~~~~~ 5 warnings generated. -- In file included from drivers/crypto/montage/tsse/tsse_ipc.c:14: In file included from drivers/crypto/montage/tsse/tsse_dev.h:13: In file included from include/linux/pci.h:1629: In file included from include/linux/dmapool.h:14: In file included from include/linux/scatterlist.h:8: In file included from include/linux/mm.h:2193: 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_" | ~~~~~~~~~~~ ^ ~~~ In file included from drivers/crypto/montage/tsse/tsse_ipc.c:14: drivers/crypto/montage/tsse/tsse_dev.h:84:6: warning: variable 'cpu' set but not used [-Wunused-but-set-variable] 84 | int cpu, node; | ^ drivers/crypto/montage/tsse/tsse_ipc.c:17:18: warning: no previous prototype for function 'get_msginf' [-Wmissing-prototypes] 17 | struct tsse_msg *get_msginf(void __iomem *d2h) | ^ drivers/crypto/montage/tsse/tsse_ipc.c:17:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 17 | struct tsse_msg *get_msginf(void __iomem *d2h) | ^ | static drivers/crypto/montage/tsse/tsse_ipc.c:41:6: warning: no previous prototype for function 'ipc_recieve_msg' [-Wmissing-prototypes] 41 | void ipc_recieve_msg(struct tsse_ipc *tsseipc, struct ipc_msg *msg) | ^ drivers/crypto/montage/tsse/tsse_ipc.c:41:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 41 | void ipc_recieve_msg(struct tsse_ipc *tsseipc, struct ipc_msg *msg) | ^ | static drivers/crypto/montage/tsse/tsse_ipc.c:53:5: warning: no previous prototype for function 'msg_rout' [-Wmissing-prototypes] 53 | int msg_rout(struct tsse_ipc *tsseipc, struct tsse_msg *tssemsg) | ^ drivers/crypto/montage/tsse/tsse_ipc.c:53:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 53 | int msg_rout(struct tsse_ipc *tsseipc, struct tsse_msg *tssemsg) | ^ | static drivers/crypto/montage/tsse/tsse_ipc.c:103:6: warning: no previous prototype for function 'ipc_send_msg' [-Wmissing-prototypes] 103 | void ipc_send_msg(struct tsse_ipc *tsseipc, struct ipc_data *msg) | ^ drivers/crypto/montage/tsse/tsse_ipc.c:103:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 103 | void ipc_send_msg(struct tsse_ipc *tsseipc, struct ipc_data *msg) | ^ | static drivers/crypto/montage/tsse/tsse_ipc.c:115:6: warning: no previous prototype for function 'ipc_hw_init' [-Wmissing-prototypes] 115 | void ipc_hw_init(struct tsse_ipc *hw_ipc) | ^ drivers/crypto/montage/tsse/tsse_ipc.c:115:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 115 | void ipc_hw_init(struct tsse_ipc *hw_ipc) | ^ | static drivers/crypto/montage/tsse/tsse_ipc.c:122:5: warning: no previous prototype for function 'ipc_init_msg' [-Wmissing-prototypes] 122 | int ipc_init_msg(struct tsse_ipc *tsseipc) | ^ drivers/crypto/montage/tsse/tsse_ipc.c:122:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 122 | int ipc_init_msg(struct tsse_ipc *tsseipc) | ^ | static 8 warnings generated. -- In file included from drivers/crypto/montage/tsse/tsse_fw_service.c:15: In file included from include/linux/mm.h:2193: 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_" | ~~~~~~~~~~~ ^ ~~~ In file included from drivers/crypto/montage/tsse/tsse_fw_service.c:20: drivers/crypto/montage/tsse/tsse_dev.h:84:6: warning: variable 'cpu' set but not used [-Wunused-but-set-variable] 84 | int cpu, node; | ^ drivers/crypto/montage/tsse/tsse_fw_service.c:26:5: warning: no previous prototype for function 'fw_send_msg' [-Wmissing-prototypes] 26 | int fw_send_msg(struct tsse_ipc *tsseipc, struct ipc_msg *msg) | ^ drivers/crypto/montage/tsse/tsse_fw_service.c:26:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 26 | int fw_send_msg(struct tsse_ipc *tsseipc, struct ipc_msg *msg) | ^ | static drivers/crypto/montage/tsse/tsse_fw_service.c:51:6: warning: no previous prototype for function 'fw_free' [-Wmissing-prototypes] 51 | void fw_free(void *msg_t) | ^ drivers/crypto/montage/tsse/tsse_fw_service.c:51:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 51 | void fw_free(void *msg_t) | ^ | static 4 warnings generated. -- In file included from drivers/crypto/montage/tsse/tsse_irq.c:10: In file included from drivers/crypto/montage/tsse/tsse_dev.h:13: In file included from include/linux/pci.h:1629: In file included from include/linux/dmapool.h:14: In file included from include/linux/scatterlist.h:8: In file included from include/linux/mm.h:2193: 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_" | ~~~~~~~~~~~ ^ ~~~ In file included from drivers/crypto/montage/tsse/tsse_irq.c:10: drivers/crypto/montage/tsse/tsse_dev.h:84:6: warning: variable 'cpu' set but not used [-Wunused-but-set-variable] 84 | int cpu, node; | ^ 2 warnings generated. -- In file included from drivers/crypto/montage/tsse/tsse_vuart.c:15: In file included from include/linux/tty.h:12: In file included from include/linux/tty_port.h:5: In file included from include/linux/kfifo.h:42: In file included from include/linux/scatterlist.h:8: In file included from include/linux/mm.h:2193: 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_" | ~~~~~~~~~~~ ^ ~~~ In file included from drivers/crypto/montage/tsse/tsse_vuart.c:25: drivers/crypto/montage/tsse/tsse_dev.h:84:6: warning: variable 'cpu' set but not used [-Wunused-but-set-variable] 84 | int cpu, node; | ^ drivers/crypto/montage/tsse/tsse_vuart.c:77:13: warning: unused function 'vuart_wait_for_xmitr' [-Wunused-function] 77 | static void vuart_wait_for_xmitr(struct uart_port *port) | ^~~~~~~~~~~~~~~~~~~~ 3 warnings generated.

vim +/cpu +84 drivers/crypto/montage/tsse/tsse_dev.h

13 #include <linux/pci.h> 14 #include <linux/pci-ats.h> 15 #include <linux/serial_core.h> 16 #include <linux/firmware.h> 17 #include "tsse_ipc.h" 18 19 #define TSSE_PCI_MAX_BARS 4 20 #define TSSE_FW_VERSION_LEN 32 21 struct tsse_bar { 22 void __iomem *virt_addr; 23 resource_size_t addr; 24 resource_size_t size; 25 }; 26 struct tsse_dev_pci { 27 struct pci_dev *pci_dev; 28 struct tsse_bar bars[TSSE_PCI_MAX_BARS]; 29 u8 revid; 30 }; 31 enum tsse_dev_status_bit { 32 TSSE_DEV_STATUS_STARTING = 0, 33 TSSE_DEV_STATUS_STARTED = 1 34 35 }; 36 struct tsse_qpairs_bank { 37 struct tsse_dev *tsse_dev; 38 void __iomem *reg_base; 39 40 u32 num_qparis; 41 u32 irq_vec; 42 }; 43 struct tsse_dev { 44 struct module *owner; 45 struct dentry *debugfs_dir; 46 unsigned long status; 47 struct list_head list; 48 struct tsse_dev_pci tsse_pci_dev; 49 struct tsse_qpairs_bank qpairs_bank; 50 atomic_t ref_count; 51 bool is_vf; 52 int id; 53 u32 num_irqs; 54 u32 num_vfs; 55 struct uart_port *port; 56 struct tsse_ipc *ipc; 57 void *adi; 58 void *mbx_hw; 59 const struct firmware *fw; 60 char fw_version[TSSE_FW_VERSION_LEN]; 61 }; 62 #define TSSEDEV_TO_DEV(tssedev) (&((tssedev)->tsse_pci_dev.pci_dev->dev)) 63 #define TSSE_DEV_BARS(tssedev) ((tssedev)->tsse_pci_dev.bars) 64 65 #include "tsse_log.h" 66 67 struct list_head *tsse_devmgr_get_head(void); 68 69 int tsse_dev_get(struct tsse_dev *tsse_dev); 70 void tsse_dev_put(struct tsse_dev *tsse_dev); 71 int tsse_devmgr_add_dev(struct tsse_dev *tsse_dev); 72 void tsse_devmgr_rm_dev(struct tsse_dev *tdev); 73 int tsse_prepare_restart_dev(struct tsse_dev *tdev); 74 int tsse_start_dev(struct tsse_dev *tdev); 75 struct tsse_dev *get_tssedev(int id); 76 77 static inline struct tsse_dev *pci_to_tsse_dev(struct pci_dev *pci_dev) 78 { 79 return (struct tsse_dev *)pci_get_drvdata(pci_dev); 80 } 81 82 static inline int tsse_get_cur_node(void) 83 { 84 int cpu, node; 85 86 cpu = get_cpu(); 87 node = topology_physical_package_id(cpu); 88 put_cpu(); 89 90 return node; 91 } 92

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