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Date: Tue, 5 Feb 2019 07:05:11 +0800
From: kbuild test robot <lkp@...el.com>
To: "Shivamurthy Shastri (sshivamurthy)" <sshivamurthy@...ron.com>
Cc: kbuild-all@...org, Boris Brezillon <bbrezillon@...nel.org>,
Miquel Raynal <miquel.raynal@...tlin.com>,
"linux-mtd@...ts.infradead.org" <linux-mtd@...ts.infradead.org>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
Richard Weinberger <richard@....at>,
David Woodhouse <dwmw2@...radead.org>,
Brian Norris <computersforpeace@...il.com>,
Marek Vasut <marek.vasut@...il.com>,
Frieder Schrempf <frieder.schrempf@...eet.de>,
"Bean Huo (beanhuo)" <beanhuo@...ron.com>,
Schrempf Frieder <frieder.schrempf@...tron.De>,
Chuanhong Guo <gch981213@...il.com>
Subject: Re: [PATCH 2/2] mtd: spinand: micron: Support for all Micron SPI
NAND flashes
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
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