tree: https://github.com/AsahiLinux/linux nvme/new head: b97dea3822f87d95ed741680a55b0e6b13755194 commit: 2160c3a88f8ad962d0a5a57dae36ffa895fd8a0b [6/9] HACK compat mailbox shim config: microblaze-randconfig-r005-20210822 (attached as .config) compiler: microblaze-linux-gcc (GCC) 11.2.0 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/AsahiLinux/linux/commit/2160c3a88f8ad962d0a5a57dae36ff... git remote add asahilinux https://github.com/AsahiLinux/linux git fetch --no-tags asahilinux nvme/new git checkout 2160c3a88f8ad962d0a5a57dae36ffa895fd8a0b # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross ARCH=microblaze If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>): drivers/mailbox/apple-mailbox-compat-shim.c: In function 'apple_compat_mbox_chan_send_data': 68 | msg.msg0 = (u64)data; | ^ drivers/mailbox/apple-mailbox-compat-shim.c: In function 'rtk_got_msg': 112 | mbox_chan_received_data(&mbox->chan[endpoint], (void *)message); | ^ vim +68 drivers/mailbox/apple-mailbox-compat-shim.c 61 62 static int apple_compat_mbox_chan_send_data(struct mbox_chan *chan, void *data) 63 { 64 struct apple_compat_mbox_priv *priv = chan->con_priv; 65 struct apple_compat_mbox *apple_mbox = priv->mbox; 66 struct apple_mbox_msg msg; 67 69 msg.msg1 = priv->ep; 70 71 return mbox_send_message(apple_mbox->hw_chan, &msg); 72 } 73 74 static int apple_compat_mbox_chan_startup(struct mbox_chan *chan) 75 { 76 struct apple_compat_mbox_priv *priv = chan->con_priv; 77 priv->enabled = true; 78 apple_rtkit_start_ep(priv->mbox->rtk, priv->ep); 79 return 0; 80 } 81 82 static void apple_compat_mbox_chan_shutdown(struct mbox_chan *chan) 83 { 84 struct apple_compat_mbox_priv *priv = chan->con_priv; 85 priv->enabled = false; 86 } 87 88 static bool apple_compat_mbox_chan_last_txdone(struct mbox_chan *chan) 89 { 90 return true; 91 } 92 93 static const struct mbox_chan_ops apple_compat_mbox_ops = { 94 .send_data = &apple_compat_mbox_chan_send_data, 95 .last_tx_done = apple_compat_mbox_chan_last_txdone, 96 .startup = &apple_compat_mbox_chan_startup, 97 .shutdown = &apple_compat_mbox_chan_shutdown, 98 }; 99 100 static int dummy_shmem_verify(void *cookie, dma_addr_t addr, size_t len) 101 { 102 return 0; 103 } 104 105 static void rtk_got_msg(void *cookie, u8 endpoint, u64 message) 106 { 107 struct apple_compat_mbox *mbox = cookie; 108 109 if (!mbox->chan_priv[endpoint].enabled) 110 return; 111 113 } 114 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org