Hi Shenwei, kernel test robot noticed the following build warnings:
[auto build test WARNING on remoteproc/rproc-next] [also build test WARNING on brgl/gpio/for-next shawnguo/for-next linus/master v6.17-rc2 next-20250820] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Shenwei-Wang/dt-bindings-remoteproc-imx_rproc-Add-rpmsg-subnode-support/20250819-044803 base: https://git.kernel.org/pub/scm/linux/kernel/git/remoteproc/linux.git rproc-next patch link: https://lore.kernel.org/r/20250818204420.794554-4-shenwei.wang%40nxp.com patch subject: [PATCH 3/4] gpio: imx-rpmsg: add imx-rpmsg GPIO driver config: arm64-allmodconfig (https://download.01.org/0day-ci/archive/20250821/202508212119.gamkdcxg-...@intel.com/config) compiler: clang version 19.1.7 (https://github.com/llvm/llvm-project cd708029e0b2869e80abe31ddb175f7c35361f90) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250821/202508212119.gamkdcxg-...@intel.com/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <l...@intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202508212119.gamkdcxg-...@intel.com/ All warnings (new ones prefixed by >>): >> drivers/gpio/gpio-imx-rpmsg.c:419:6: warning: variable 'port' is used >> uninitialized whenever 'if' condition is false [-Wsometimes-uninitialized] 419 | if (msg) | ^~~ drivers/gpio/gpio-imx-rpmsg.c:421:7: note: uninitialized use occurs here 421 | if (!port) | ^~~~ drivers/gpio/gpio-imx-rpmsg.c:419:2: note: remove the 'if' if its condition is always true 419 | if (msg) | ^~~~~~~~ 420 | port = drvdata->channel_devices[msg->port_idx]; drivers/gpio/gpio-imx-rpmsg.c:415:34: note: initialize the variable 'port' to silence this warning 415 | struct imx_rpmsg_gpio_port *port; | ^ | = NULL drivers/gpio/gpio-imx-rpmsg.c:503:10: error: incompatible function pointer types assigning to 'void (*)(struct gpio_chip *, unsigned int, int)' from 'int (struct gpio_chip *, unsigned int, int)' [-Wincompatible-function-pointer-types] 503 | gc->set = imx_rpmsg_gpio_set; | ^ ~~~~~~~~~~~~~~~~~~ 1 warning and 1 error generated. vim +419 drivers/gpio/gpio-imx-rpmsg.c 409 410 static int imx_rpmsg_gpio_callback(struct rpmsg_device *rpdev, 411 void *data, int len, void *priv, u32 src) 412 { 413 struct gpio_rpmsg_data *msg = (struct gpio_rpmsg_data *)data; 414 unsigned long flags; 415 struct imx_rpmsg_gpio_port *port; 416 struct imx_rpmsg_driver_data *drvdata; 417 418 drvdata = dev_get_drvdata(&rpdev->dev); > 419 if (msg) 420 port = drvdata->channel_devices[msg->port_idx]; 421 if (!port) 422 return -ENODEV; 423 424 if (msg->header.type == GPIO_RPMSG_REPLY) { 425 port->info.reply_msg = msg; 426 complete(&port->info.cmd_complete); 427 } else if (msg->header.type == GPIO_RPMSG_NOTIFY) { 428 port->info.notify_msg = msg; 429 local_irq_save(flags); 430 generic_handle_domain_irq(port->domain, msg->pin_idx); 431 local_irq_restore(flags); 432 } else 433 dev_err(&rpdev->dev, "wrong command type!\n"); 434 435 return 0; 436 } 437 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
