12:28 a.m.
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 5833291ab6de9c3e2374336b51c814e515e8f3a5
commit: 2add5cacff3531e54c50b0832128299faa9f0563 firmware: arm_scmi: Add voltage domain
management protocol support
date: 12 months ago
config: riscv-randconfig-s032-20211109 (attached as .config)
compiler: riscv32-linux-gcc (GCC) 11.2.0
reproduce:
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O
~/bin/make.cross
chmod +x ~/bin/make.cross
# apt-get install sparse
# sparse version: v0.6.4-dirty
#
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit...
git remote add linus
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout 2add5cacff3531e54c50b0832128299faa9f0563
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross C=1
CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=riscv
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp(a)intel.com>
sparse warnings: (new ones prefixed by >>)
> drivers/firmware/arm_scmi/voltage.c:159:42: sparse: sparse:
incorrect type in assignment (different base types) @@ expected restricted __le32
[usertype] level_index @@ got unsigned int [usertype] desc_index @@
drivers/firmware/arm_scmi/voltage.c:159:42: sparse: expected restricted __le32
[usertype] level_index
drivers/firmware/arm_scmi/voltage.c:159:42: sparse: got unsigned int [usertype]
desc_index
vim +159 drivers/firmware/arm_scmi/voltage.c
111
112 static int scmi_voltage_descriptors_get(const struct scmi_handle *handle,
113 struct voltage_info *vinfo)
114 {
115 int ret, dom;
116 struct scmi_xfer *td, *tl;
117 struct device *dev = handle->dev;
118 struct scmi_msg_resp_domain_attributes *resp_dom;
119 struct scmi_msg_resp_describe_levels *resp_levels;
120
121 ret = scmi_xfer_get_init(handle, VOLTAGE_DOMAIN_ATTRIBUTES,
122 SCMI_PROTOCOL_VOLTAGE, sizeof(__le32),
123 sizeof(*resp_dom), &td);
124 if (ret)
125 return ret;
126 resp_dom = td->rx.buf;
127
128 ret = scmi_xfer_get_init(handle, VOLTAGE_DESCRIBE_LEVELS,
129 SCMI_PROTOCOL_VOLTAGE, sizeof(__le64), 0, &tl);
130 if (ret)
131 goto outd;
132 resp_levels = tl->rx.buf;
133
134 for (dom = 0; dom < vinfo->num_domains; dom++) {
135 u32 desc_index = 0;
136 u16 num_returned = 0, num_remaining = 0;
137 struct scmi_msg_cmd_describe_levels *cmd;
138 struct scmi_voltage_info *v;
139
140 /* Retrieve domain attributes at first ... */
141 put_unaligned_le32(dom, td->tx.buf);
142 ret = scmi_do_xfer(handle, td);
143 /* Skip domain on comms error */
144 if (ret)
145 continue;
146
147 v = vinfo->domains + dom;
148 v->id = dom;
149 v->attributes = le32_to_cpu(resp_dom->attr);
150 strlcpy(v->name, resp_dom->name, SCMI_MAX_STR_SIZE);
151
152 cmd = tl->tx.buf;
153 /* ...then retrieve domain levels descriptions */
154 do {
155 u32 flags;
156 int cnt;
157
158 cmd->domain_id = cpu_to_le32(v->id);
159 cmd->level_index = desc_index;
160 ret =
scmi_do_xfer(handle, tl);
161 if (ret)
162 break;
163
164 flags = le32_to_cpu(resp_levels->flags);
165 num_returned = NUM_RETURNED_LEVELS(flags);
166 num_remaining = NUM_REMAINING_LEVELS(flags);
167
168 /* Allocate space for num_levels if not already done */
169 if (!v->num_levels) {
170 ret = scmi_init_voltage_levels(dev, v,
171 num_returned,
172 num_remaining,
173 SUPPORTS_SEGMENTED_LEVELS(flags));
174 if (ret)
175 break;
176 }
177
178 if (desc_index + num_returned > v->num_levels) {
179 dev_err(handle->dev,
180 "No. of voltage levels can't exceed %d\n",
181 v->num_levels);
182 ret = -EINVAL;
183 break;
184 }
185
186 for (cnt = 0; cnt < num_returned; cnt++) {
187 s32 val;
188
189 val =
190 (s32)le32_to_cpu(resp_levels->voltage[cnt]);
191 v->levels_uv[desc_index + cnt] = val;
192 if (val < 0)
193 v->negative_volts_allowed = true;
194 }
195
196 desc_index += num_returned;
197
198 scmi_reset_rx_to_maxsz(handle, tl);
199 /* check both to avoid infinite loop due to buggy fw */
200 } while (num_returned && num_remaining);
201
202 if (ret) {
203 v->num_levels = 0;
204 devm_kfree(dev, v->levels_uv);
205 }
206
207 scmi_reset_rx_to_maxsz(handle, td);
208 }
209
210 scmi_xfer_put(handle, tl);
211 outd:
212 scmi_xfer_put(handle, td);
213
214 return ret;
215 }
216
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org