Hi jaap, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on hwmon/hwmon-next] [also build test WARNING on v5.8 next-20200814] [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] url: https://github.com/0day-ci/linux/commits/jaap-aarts/hwmon-add-fan-pwm-driver-for-corsair-h100i-platinum/20200816-085929 base: https://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging.git hwmon-next config: nios2-randconfig-c003-20200816 (attached as .config) compiler: nios2-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 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=nios2 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>): drivers/hwmon/corsair_hydro_i_pro.c: In function 'hwmon_init': >> drivers/hwmon/corsair_hydro_i_pro.c:529:17: warning: variable 'hwmon_dev' set but not used [-Wunused-but-set-variable] 529 | struct device *hwmon_dev; | ^~~~~~~~~ drivers/hwmon/corsair_hydro_i_pro.c: In function 'init_device': >> drivers/hwmon/corsair_hydro_i_pro.c:584:3: warning: suggest braces around empty body in an 'if' statement [-Wempty-body] 584 | ; | ^ vim +/hwmon_dev +529 drivers/hwmon/corsair_hydro_i_pro.c 525 526 static void hwmon_init(struct hydro_i_pro_device *hdev) 527 { 528 u8 fan_id; > 529 struct device *hwmon_dev; 530 struct hwmon_fan_data *fan; 531 struct hwmon_data *data = devm_kzalloc( 532 &hdev->udev->dev, sizeof(struct hwmon_data), GFP_KERNEL); 533 struct hwmon_chip_info *hwmon_info = devm_kzalloc( 534 &hdev->udev->dev, sizeof(struct hwmon_chip_info), GFP_KERNEL); 535 536 /* You did something bad!! Either adjust max_fan_count or the fancount for the config!*/ 537 WARN_ON(hdev->config->fancount >= max_pwm_channel_count); 538 data->channel_count = hdev->config->fancount; 539 540 /* For each fan create a data channel a fan config entry and a pwm config entry */ 541 for (fan_id = 0; fan_id < data->channel_count; fan_id++) { 542 fan = devm_kzalloc(&hdev->udev->dev, 543 sizeof(struct hwmon_fan_data), GFP_KERNEL); 544 fan->fan_channel = fan_id; 545 fan->mode = 0; 546 data->channel_data[fan_id] = fan; 547 } 548 549 hwmon_info->ops = &i_pro_ops; 550 hwmon_info->info = hdev->config->hwmon_info; 551 552 data->hdev = hdev; 553 hwmon_dev = devm_hwmon_device_register_with_info( 554 &hdev->udev->dev, hdev->config->name, data, hwmon_info, NULL); 555 dev_info(&hdev->udev->dev, "setup hwmon for %s\n", hdev->config->name); 556 } 557 558 const int USB_VENDOR_ID_CORSAIR = 0x1b1c; 559 const int USB_PRODUCT_ID_H100I_PRO = 0x0c15; 560 /* 561 * Devices that work with this driver. 562 * More devices should work, however none have been tested. 563 */ 564 static const struct usb_device_id astk_table[] = { 565 { USB_DEVICE(USB_VENDOR_ID_CORSAIR, USB_PRODUCT_ID_H100I_PRO), 566 .driver_info = (kernel_ulong_t)&config_table[0] }, 567 {}, 568 }; 569 570 MODULE_DEVICE_TABLE(usb, astk_table); 571 572 static int init_device(struct usb_device *udev) 573 { 574 int retval; 575 576 /* 577 * This is needed because when running windows in a vm with proprietary driver 578 * and you switch to this driver, the device will not respond unless you run this. 579 */ 580 retval = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x00, 0x40, 581 0xffff, 0x0000, 0, 0, 0); 582 /*this always returns error*/ 583 if (retval) > 584 ; 585 586 retval = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x02, 0x40, 587 0x0002, 0x0000, 0, 0, 0); 588 return retval; 589 } 590 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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