tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: fc80c51fd4b23ec007e88d4c688f2cac1b8648e7 commit: 89e7eddece6140020749932f9647a6068cc0d56d soc: qcom: aoss: Read back before triggering the IRQ date: 6 months ago config: nds32-randconfig-r031-20200810 (attached as .config) compiler: nds32le-linux-gcc (GCC) 9.3.0 reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross git checkout 89e7eddece6140020749932f9647a6068cc0d56d # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=nds32
If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <[email protected]> All warnings (new ones prefixed by >>): drivers/soc/qcom/qcom_aoss.c: In function 'qmp_send': >> drivers/soc/qcom/qcom_aoss.c:228:9: warning: variable 'tlen' set but not >> used [-Wunused-but-set-variable] 228 | size_t tlen; | ^~~~ vim +/tlen +228 drivers/soc/qcom/qcom_aoss.c 212 213 /** 214 * qmp_send() - send a message to the AOSS 215 * @qmp: qmp context 216 * @data: message to be sent 217 * @len: length of the message 218 * 219 * Transmit @data to AOSS and wait for the AOSS to acknowledge the message. 220 * @len must be a multiple of 4 and not longer than the mailbox size. Access is 221 * synchronized by this implementation. 222 * 223 * Return: 0 on success, negative errno on failure 224 */ 225 static int qmp_send(struct qmp *qmp, const void *data, size_t len) 226 { 227 long time_left; > 228 size_t tlen; 229 int ret; 230 231 if (WARN_ON(len + sizeof(u32) > qmp->size)) 232 return -EINVAL; 233 234 if (WARN_ON(len % sizeof(u32))) 235 return -EINVAL; 236 237 mutex_lock(&qmp->tx_lock); 238 239 /* The message RAM only implements 32-bit accesses */ 240 __iowrite32_copy(qmp->msgram + qmp->offset + sizeof(u32), 241 data, len / sizeof(u32)); 242 writel(len, qmp->msgram + qmp->offset); 243 244 /* Read back len to confirm data written in message RAM */ 245 tlen = readl(qmp->msgram + qmp->offset); 246 qmp_kick(qmp); 247 248 time_left = wait_event_interruptible_timeout(qmp->event, 249 qmp_message_empty(qmp), HZ); 250 if (!time_left) { 251 dev_err(qmp->dev, "ucore did not ack channel\n"); 252 ret = -ETIMEDOUT; 253 254 /* Clear message from buffer */ 255 writel(0, qmp->msgram + qmp->offset); 256 } else { 257 ret = 0; 258 } 259 260 mutex_unlock(&qmp->tx_lock); 261 262 return ret; 263 } 264 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/[email protected]
.config.gz
Description: application/gzip
