Hi Yuntao, kernel test robot noticed the following build warnings: [auto build test WARNING on robh/for-next] [also build test WARNING on linus/master v6.10-rc4 next-20240619] [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/Yuntao-Dai/dt-bindings-mailbox-add-Sophgo-cv18x-SoCs-mailbox/20240618-232307 base: https://git.kernel.org/pub/scm/linux/kernel/git/robh/linux.git for-next patch link: https://lore.kernel.org/r/SYBP282MB2238F93AB57A398E322644C3C4CE2%40SYBP282MB2238.AUSP282.PROD.OUTLOOK.COM patch subject: [PATCH 3/3] mailbox: sophgo: add mailbox driver for cv18x SoCs config: x86_64-allyesconfig (https://download.01.org/0day-ci/archive/20240620/202406200820.Wms9UPDw-lkp@xxxxxxxxx/config) compiler: clang version 18.1.5 (https://github.com/llvm/llvm-project 617a15a9eac96088ae5e9134248d8236e34b91b1) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240620/202406200820.Wms9UPDw-lkp@xxxxxxxxx/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 <lkp@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202406200820.Wms9UPDw-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): >> drivers/mailbox/cv1800b-mailbox.c:83:12: warning: cast to smaller integer type 'int' from 'void *' [-Wvoid-pointer-to-int-cast] 83 | int idx = (int)chan->con_priv; | ^~~~~~~~~~~~~~~~~~~ >> drivers/mailbox/cv1800b-mailbox.c:160:34: warning: cast to 'void *' from smaller integer type 'int' [-Wint-to-void-pointer-cast] 160 | mb->mbox.chans[idx].con_priv = (void *)idx; | ^~~~~~~~~~~ 2 warnings generated. vim +83 drivers/mailbox/cv1800b-mailbox.c 79 80 static int cv1800b_mbox_send_data(struct mbox_chan *chan, void *data) 81 { 82 struct cv1800b_mbox *mbox = dev_get_drvdata(chan->mbox->dev); > 83 int idx = (int)chan->con_priv; 84 u8 en, valid; 85 u64 *addr = (u64 *)(mbox->mbox_base + MAILBOX_CONTEXT_OFFSET) + idx; 86 87 memcpy_toio(addr, data, 8); 88 89 valid = 1 << idx; 90 writeb(valid, mbox->mbox_base + MBOX_SET_CLR_REG(mbox->sendto)); 91 en = readb(mbox->mbox_base + MBOX_EN_REG(mbox->sendto)); 92 writeb(en | valid, mbox->mbox_base + MBOX_EN_REG(mbox->sendto)); 93 writeb(valid, mbox->mbox_base + MBOX_SET_REG); 94 95 return 0; 96 } 97 98 static bool cv1800b_last_tx_done(struct mbox_chan *chan) 99 { 100 return true; 101 } 102 103 static const struct mbox_chan_ops cv1800b_mbox_chan_ops = { 104 .send_data = cv1800b_mbox_send_data, 105 .last_tx_done = cv1800b_last_tx_done, 106 }; 107 108 static const struct of_device_id cv1800b_mbox_of_match[] = { 109 { .compatible = "sophgo,cv1800b-mailbox", }, 110 {}, 111 }; 112 MODULE_DEVICE_TABLE(of, cv1800b_mbox_of_match); 113 114 static int cv1800b_mbox_probe(struct platform_device *pdev) 115 { 116 struct device *dev = &pdev->dev; 117 struct cv1800b_mbox *mb; 118 int irq, idx, err, cpu; 119 120 if (!dev->of_node) 121 return -ENODEV; 122 123 mb = devm_kzalloc(dev, sizeof(*mb), GFP_KERNEL); 124 if (!mb) 125 return -ENOMEM; 126 127 mb->mbox_base = devm_of_iomap(dev, dev->of_node, 0, NULL); 128 if (IS_ERR(mb->mbox_base)) 129 return dev_err_probe(dev, PTR_ERR(mb->mbox_base), 130 "Failed to map resource\n"); 131 132 err = of_property_read_s32(dev->of_node, "sendto", &cpu); 133 if (err) 134 return dev_err_probe(dev, err, 135 "Failed to find <sendto> in of_node\n"); 136 137 mb->sendto = cpu; 138 139 err = of_property_read_s32(dev->of_node, "recvid", &cpu); 140 if (err) { 141 return dev_err_probe(dev, err, 142 "Failed to find <recvid> in of_node\n"); 143 } 144 mb->recvid = cpu; 145 146 mb->mbox.dev = dev; 147 mb->mbox.num_chans = MAILBOX_MAX_CHAN; 148 mb->mbox.chans = mb->chans; 149 mb->mbox.ops = &cv1800b_mbox_chan_ops; 150 mb->mbox.txdone_poll = true; 151 152 irq = platform_get_irq_byname(pdev, "mailbox"); 153 err = devm_request_threaded_irq(dev, irq, cv1800b_mbox_irq, 154 cv1800b_mbox_isr, IRQF_ONESHOT, 155 dev_name(&pdev->dev), mb); 156 if (err < 0) 157 return dev_err_probe(dev, err, "Failed to register irq\n"); 158 159 for (idx = 0; idx < MAILBOX_MAX_CHAN; idx++) > 160 mb->mbox.chans[idx].con_priv = (void *)idx; 161 162 err = devm_mbox_controller_register(dev, &mb->mbox); 163 if (err) 164 return dev_err_probe(dev, err, "Failed to register mailbox\n"); 165 166 platform_set_drvdata(pdev, mb); 167 return 0; 168 } 169 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
