tree: https://git.kernel.org/pub/scm/linux/kernel/git/herbert/cryptodev-2.6.git master head: 0adb0c99594b73844cf9a5714faa6553ea04ba04 commit: c34a320176a59445d76783e5ee043d6ecd22d011 [56/59] crypto: atmel-ecc - factor out code that can be shared reproduce: # apt-get install sparse # sparse version: v0.6.1-rc1-7-g2b96cd8-dirty git checkout c34a320176a59445d76783e5ee043d6ecd22d011 make ARCH=x86_64 allmodconfig make C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' If you fix the issue, kindly add following tag Reported-by: kbuild test robot <lkp@xxxxxxxxx> sparse warnings: (new ones prefixed by >>) >> drivers/crypto/atmel-i2c.c:39:18: sparse: sparse: incorrect type in assignment (different base types) @@ expected unsigned short [usertype] @@ got resunsigned short [usertype] @@ >> drivers/crypto/atmel-i2c.c:39:18: sparse: expected unsigned short [usertype] >> drivers/crypto/atmel-i2c.c:39:18: sparse: got restricted __le16 [usertype] >> drivers/crypto/atmel-i2c.c:68:21: sparse: sparse: incorrect type in assignment (different base types) @@ expected unsigned short [usertype] param2 @@ got resunsigned short [usertype] param2 @@ >> drivers/crypto/atmel-i2c.c:68:21: sparse: expected unsigned short [usertype] param2 drivers/crypto/atmel-i2c.c:68:21: sparse: got restricted __le16 [usertype] drivers/crypto/atmel-i2c.c:87:21: sparse: sparse: incorrect type in assignment (different base types) @@ expected unsigned short [usertype] param2 @@ got resunsigned short [usertype] param2 @@ drivers/crypto/atmel-i2c.c:87:21: sparse: expected unsigned short [usertype] param2 drivers/crypto/atmel-i2c.c:87:21: sparse: got restricted __le16 [usertype] vim +39 drivers/crypto/atmel-i2c.c 23 24 /** 25 * atmel_i2c_checksum() - Generate 16-bit CRC as required by ATMEL ECC. 26 * CRC16 verification of the count, opcode, param1, param2 and data bytes. 27 * The checksum is saved in little-endian format in the least significant 28 * two bytes of the command. CRC polynomial is 0x8005 and the initial register 29 * value should be zero. 30 * 31 * @cmd : structure used for communicating with the device. 32 */ 33 static void atmel_i2c_checksum(struct atmel_i2c_cmd *cmd) 34 { 35 u8 *data = &cmd->count; 36 size_t len = cmd->count - CRC_SIZE; 37 u16 *__crc16 = (u16 *)(data + len); 38 > 39 *__crc16 = cpu_to_le16(bitrev16(crc16(0, data, len))); 40 } 41 42 void atmel_i2c_init_read_cmd(struct atmel_i2c_cmd *cmd) 43 { 44 cmd->word_addr = COMMAND; 45 cmd->opcode = OPCODE_READ; 46 /* 47 * Read the word from Configuration zone that contains the lock bytes 48 * (UserExtra, Selector, LockValue, LockConfig). 49 */ 50 cmd->param1 = CONFIG_ZONE; 51 cmd->param2 = DEVICE_LOCK_ADDR; 52 cmd->count = READ_COUNT; 53 54 atmel_i2c_checksum(cmd); 55 56 cmd->msecs = MAX_EXEC_TIME_READ; 57 cmd->rxsize = READ_RSP_SIZE; 58 } 59 EXPORT_SYMBOL(atmel_i2c_init_read_cmd); 60 61 void atmel_i2c_init_genkey_cmd(struct atmel_i2c_cmd *cmd, u16 keyid) 62 { 63 cmd->word_addr = COMMAND; 64 cmd->count = GENKEY_COUNT; 65 cmd->opcode = OPCODE_GENKEY; 66 cmd->param1 = GENKEY_MODE_PRIVATE; 67 /* a random private key will be generated and stored in slot keyID */ > 68 cmd->param2 = cpu_to_le16(keyid); 69 70 atmel_i2c_checksum(cmd); 71 72 cmd->msecs = MAX_EXEC_TIME_GENKEY; 73 cmd->rxsize = GENKEY_RSP_SIZE; 74 } 75 EXPORT_SYMBOL(atmel_i2c_init_genkey_cmd); 76 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
