Hi Loic, I love your patch! Perhaps something to improve: [auto build test WARNING on net-next/master] url: https://github.com/0day-ci/linux/commits/Loic-Poulain/net-Add-a-WWAN-subsystem/20210402-220002 base: https://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next.git bd78980be1a68d14524c51c4b4170782fada622b config: sh-allmodconfig (attached as .config) compiler: sh4-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 # https://github.com/0day-ci/linux/commit/16d753f4f524ce1aa95f45057244b1d28b50adc9 git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Loic-Poulain/net-Add-a-WWAN-subsystem/20210402-220002 git checkout 16d753f4f524ce1aa95f45057244b1d28b50adc9 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=sh 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/net/wwan/mhi_wwan_ctrl.c:46:6: warning: no previous prototype for '__mhi_skb_destructor' [-Wmissing-prototypes] 46 | void __mhi_skb_destructor(struct sk_buff *skb) | ^~~~~~~~~~~~~~~~~~~~ Kconfig warnings: (for reference only) WARNING: unmet direct dependencies detected for SND_ATMEL_SOC_PDC Depends on SOUND && !UML && SND && SND_SOC && SND_ATMEL_SOC && HAS_DMA Selected by - SND_ATMEL_SOC_SSC && SOUND && !UML && SND && SND_SOC && SND_ATMEL_SOC - SND_ATMEL_SOC_SSC_PDC && SOUND && !UML && SND && SND_SOC && SND_ATMEL_SOC && ATMEL_SSC vim +/__mhi_skb_destructor +46 drivers/net/wwan/mhi_wwan_ctrl.c 45 > 46 void __mhi_skb_destructor(struct sk_buff *skb) 47 { 48 struct mhi_wwan_dev *mhiwwan = skb_shinfo(skb)->destructor_arg; 49 50 /* RX buffer has been consumed, increase the allowed budget */ 51 atomic_inc(&mhiwwan->rx_budget); 52 53 if (mhi_wwan_ctrl_refill_needed(mhiwwan)) 54 schedule_work(&mhiwwan->rx_refill); 55 } 56 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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