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SubjectRe: [v4 06/11] drivers/peci: Add a PECI adapter driver for Aspeed AST24xx/AST25xx
Hi Jae,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on linus/master]
[also build test WARNING on v4.17-rc6 next-20180517]
[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/Jae-Hyun-Yoo/dt-bindings-Add-a-document-of-PECI-subsystem/20180522-204411
reproduce:
# apt-get install sparse
make ARCH=x86_64 allmodconfig
make C=1 CF=-D__CHECK_ENDIAN__


sparse warnings: (new ones prefixed by >>)

>> drivers/peci/peci-aspeed.c:146:42: sparse: incorrect type in argument 3 (different base types) @@ expected unsigned int [unsigned] val @@ got d int [unsigned] val @@
drivers/peci/peci-aspeed.c:146:42: expected unsigned int [unsigned] val
drivers/peci/peci-aspeed.c:146:42: got restricted __le32

vim +146 drivers/peci/peci-aspeed.c

116
117 static int aspeed_peci_xfer_native(struct aspeed_peci *priv,
118 struct peci_xfer_msg *msg)
119 {
120 long err, timeout = msecs_to_jiffies(priv->cmd_timeout_ms);
121 u32 peci_head, peci_state, rx_data, cmd_sts;
122 unsigned long flags;
123 int i, rc;
124 uint reg;
125
126 /* Check command sts and bus idle state */
127 rc = regmap_read_poll_timeout(priv->regmap, ASPEED_PECI_CMD, cmd_sts,
128 !(cmd_sts & (PECI_CMD_STS_MASK | PECI_CMD_PIN_MON)),
129 PECI_IDLE_CHECK_INTERVAL_USEC, PECI_IDLE_CHECK_TIMEOUT_USEC);
130 if (rc)
131 return rc; /* -ETIMEDOUT */
132
133 spin_lock_irqsave(&priv->lock, flags);
134 reinit_completion(&priv->xfer_complete);
135
136 peci_head = FIELD_PREP(PECI_TAGET_ADDR_MASK, msg->addr) |
137 FIELD_PREP(PECI_WRITE_LEN_MASK, msg->tx_len) |
138 FIELD_PREP(PECI_READ_LEN_MASK, msg->rx_len);
139
140 regmap_write(priv->regmap, ASPEED_PECI_CMD_CTRL, peci_head);
141
142 for (i = 0; i < msg->tx_len; i += 4) {
143 reg = i < 16 ? ASPEED_PECI_W_DATA0 + i % 16 :
144 ASPEED_PECI_W_DATA4 + i % 16;
145 regmap_write(priv->regmap, reg,
> 146 cpu_to_le32p((u32 *)&msg->tx_buf[i]));
147 }
148
149 dev_dbg(priv->dev, "HEAD : 0x%08x\n", peci_head);
150 print_hex_dump_debug("TX : ", DUMP_PREFIX_NONE, 16, 1,
151 msg->tx_buf, msg->tx_len, true);
152
153 priv->status = 0;
154 regmap_write(priv->regmap, ASPEED_PECI_CMD, PECI_CMD_FIRE);
155 spin_unlock_irqrestore(&priv->lock, flags);
156
157 err = wait_for_completion_interruptible_timeout(&priv->xfer_complete,
158 timeout);
159
160 spin_lock_irqsave(&priv->lock, flags);
161 dev_dbg(priv->dev, "INT_STS : 0x%08x\n", priv->status);
162 regmap_read(priv->regmap, ASPEED_PECI_CMD, &peci_state);
163 dev_dbg(priv->dev, "PECI_STATE : 0x%lx\n",
164 FIELD_GET(PECI_CMD_STS_MASK, peci_state));
165
166 regmap_write(priv->regmap, ASPEED_PECI_CMD, 0);
167
168 if (err <= 0 || priv->status != PECI_INT_CMD_DONE) {
169 if (err < 0) { /* -ERESTARTSYS */
170 rc = (int)err;
171 goto err_irqrestore;
172 } else if (err == 0) {
173 dev_dbg(priv->dev, "Timeout waiting for a response!\n");
174 rc = -ETIMEDOUT;
175 goto err_irqrestore;
176 }
177
178 dev_dbg(priv->dev, "No valid response!\n");
179 rc = -EIO;
180 goto err_irqrestore;
181 }
182
183 /**
184 * Note that rx_len and rx_buf size can be an odd number.
185 * Byte handling is more efficient.
186 */
187 for (i = 0; i < msg->rx_len; i++) {
188 u8 byte_offset = i % 4;
189
190 if (byte_offset == 0) {
191 reg = i < 16 ? ASPEED_PECI_R_DATA0 + i % 16 :
192 ASPEED_PECI_R_DATA4 + i % 16;
193 regmap_read(priv->regmap, reg, &rx_data);
194 }
195
196 msg->rx_buf[i] = (u8)(rx_data >> (byte_offset << 3));
197 }
198
199 print_hex_dump_debug("RX : ", DUMP_PREFIX_NONE, 16, 1,
200 msg->rx_buf, msg->rx_len, true);
201
202 regmap_read(priv->regmap, ASPEED_PECI_CMD, &peci_state);
203 dev_dbg(priv->dev, "PECI_STATE : 0x%lx\n",
204 FIELD_GET(PECI_CMD_STS_MASK, peci_state));
205 dev_dbg(priv->dev, "------------------------\n");
206
207 err_irqrestore:
208 spin_unlock_irqrestore(&priv->lock, flags);
209 return rc;
210 }
211

---
0-DAY kernel test infrastructure Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all Intel Corporation

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