Hi Shivamurthy, Thank you for the patch! Perhaps something to improve:
[auto build test WARNING on mtd/nand/next] [also build test WARNING on v5.0-rc4 next-20190204] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system] url: https://github.com/0day-ci/linux/commits/Shivamurthy-Shastri-sshivamurthy/Support-parameter-page-and-Redesign-Micron-SPI-NAND/20190205-012740 base: git://git.infradead.org/linux-mtd.git nand/next reproduce: # apt-get install sparse make ARCH=x86_64 allmodconfig make C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' All warnings (new ones prefixed by >>): >> drivers/mtd/nand/spi/micron.c:186:36: sparse: warning: incorrect type in >> assignment (different base types) drivers/mtd/nand/spi/micron.c:186:36: sparse: expected unsigned int [assigned] pagesize drivers/mtd/nand/spi/micron.c:186:36: sparse: got restricted __le32 [usertype] byte_per_page drivers/mtd/nand/spi/micron.c:187:35: sparse: warning: incorrect type in assignment (different base types) drivers/mtd/nand/spi/micron.c:187:35: sparse: expected unsigned int [assigned] oobsize drivers/mtd/nand/spi/micron.c:187:35: sparse: got restricted __le16 [usertype] spare_bytes_per_page drivers/mtd/nand/spi/micron.c:188:48: sparse: warning: incorrect type in assignment (different base types) drivers/mtd/nand/spi/micron.c:188:48: sparse: expected unsigned int [assigned] pages_per_eraseblock drivers/mtd/nand/spi/micron.c:188:48: sparse: got restricted __le32 [usertype] pages_per_block >> drivers/mtd/nand/spi/micron.c:190:23: sparse: warning: restricted __le32 >> degrades to integer sparse warnings: (new ones prefixed by >>) drivers/mtd/nand/spi/micron.c:186:36: sparse: warning: incorrect type in assignment (different base types) >> drivers/mtd/nand/spi/micron.c:186:36: sparse: expected unsigned int >> [assigned] pagesize >> drivers/mtd/nand/spi/micron.c:186:36: sparse: got restricted __le32 >> [usertype] byte_per_page drivers/mtd/nand/spi/micron.c:187:35: sparse: warning: incorrect type in assignment (different base types) >> drivers/mtd/nand/spi/micron.c:187:35: sparse: expected unsigned int >> [assigned] oobsize >> drivers/mtd/nand/spi/micron.c:187:35: sparse: got restricted __le16 >> [usertype] spare_bytes_per_page drivers/mtd/nand/spi/micron.c:188:48: sparse: warning: incorrect type in assignment (different base types) >> drivers/mtd/nand/spi/micron.c:188:48: sparse: expected unsigned int >> [assigned] pages_per_eraseblock >> drivers/mtd/nand/spi/micron.c:188:48: sparse: got restricted __le32 >> [usertype] pages_per_block drivers/mtd/nand/spi/micron.c:190:23: sparse: warning: restricted __le32 degrades to integer vim +186 drivers/mtd/nand/spi/micron.c 127 128 static int micron_spinand_detect(struct spinand_device *spinand) 129 { 130 struct spinand_info deviceinfo; 131 struct micron_spinand_params *params; 132 u8 *id = spinand->id.data; 133 int ret, i; 134 135 /* 136 * Micron SPI NAND read ID need a dummy byte, 137 * so the first byte in raw_id is dummy. 138 */ 139 if (id[1] != SPINAND_MFR_MICRON) 140 return 0; 141 142 params = kzalloc(sizeof(*params) * 3, GFP_KERNEL); 143 if (!params) 144 return -ENOMEM; 145 146 ret = spinand_parameter_page_read(spinand, PARAMETER_PAGE, params, 147 sizeof(*params) * 3); 148 if (ret) 149 goto free_params; 150 151 for (i = 0; i < 3; i++) { 152 if (spinand_crc16(0x4F4E, (u8 *)¶ms[i], 254) == 153 le16_to_cpu(params->crc)) { 154 if (i) 155 memcpy(params, ¶ms[i], sizeof(*params)); 156 break; 157 } 158 } 159 160 if (i == 3) { 161 const void *srcbufs[3] = {params, params + 1, params + 2}; 162 163 pr_warn("No valid parameter page, trying bit-wise majority to recover it\n"); 164 bit_wise_majority(srcbufs, ARRAY_SIZE(srcbufs), params, 165 sizeof(*params)); 166 167 if (spinand_crc16(0x4F4E, (u8 *)params, 254) != 168 le16_to_cpu(params->crc)) { 169 pr_err("Parameter page recovery failed, aborting\n"); 170 goto free_params; 171 } 172 } 173 174 params->model[sizeof(params->model) - 1] = 0; 175 strim(params->model); 176 177 deviceinfo.model = kstrdup(params->model, GFP_KERNEL); 178 if (!deviceinfo.model) { 179 ret = -ENOMEM; 180 goto free_params; 181 } 182 183 deviceinfo.devid = id[2]; 184 deviceinfo.flags = 0; 185 deviceinfo.memorg.bits_per_cell = params->bits_per_cell; > 186 deviceinfo.memorg.pagesize = params->byte_per_page; > 187 deviceinfo.memorg.oobsize = params->spare_bytes_per_page; > 188 deviceinfo.memorg.pages_per_eraseblock = > params->pages_per_block; 189 deviceinfo.memorg.eraseblocks_per_lun = > 190 params->blocks_per_lun * params->lun_count; 191 deviceinfo.memorg.planes_per_lun = params->lun_count; 192 deviceinfo.memorg.luns_per_target = 1; 193 deviceinfo.memorg.ntargets = 1; 194 deviceinfo.eccreq.strength = params->ecc_max_correct_ability; 195 deviceinfo.eccreq.step_size = 512; 196 deviceinfo.eccinfo.get_status = ecc_get_status; 197 deviceinfo.eccinfo.ooblayout = &ooblayout; 198 deviceinfo.op_variants.read_cache = &read_cache_variants; 199 deviceinfo.op_variants.write_cache = &write_cache_variants; 200 deviceinfo.op_variants.update_cache = &update_cache_variants; 201 202 ret = spinand_match_and_init(spinand, &deviceinfo, 203 1, id[2]); 204 if (ret) 205 goto free_model; 206 207 kfree(params); 208 209 return 1; 210 211 free_model: 212 kfree(deviceinfo.model); 213 free_params: 214 kfree(params); 215 216 return ret; 217 } 218 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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