Re: [PATCH V5 2/5] mailbox: Add support for QTI CPUCP mailbox controller

[kernel test robot <lkp@intel.com>]

Hi Sibi,

kernel test robot noticed the following build errors:

[auto build test ERROR on robh/for-next]
[also build test ERROR on linus/master v6.10-rc2 next-20240604]
[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/Sibi-Sankar/dt-bindings-mailbox-qcom-Add-CPUCP-mailbox-controller-bindings/20240604-050256
base:   https://git.kernel.org/pub/scm/linux/kernel/git/robh/linux.git for-next
patch link:    https://lore.kernel.org/r/20240603205859.2212225-3-quic_sibis%40quicinc.com
patch subject: [PATCH V5 2/5] mailbox: Add support for QTI CPUCP mailbox controller
config: m68k-allyesconfig (https://download.01.org/0day-ci/archive/20240604/202406041620.FyEU8GRv-lkp@intel.com/config)
compiler: m68k-linux-gcc (GCC) 13.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240604/202406041620.FyEU8GRv-lkp@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 <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202406041620.FyEU8GRv-lkp@intel.com/

All errors (new ones prefixed by >>):

   drivers/mailbox/qcom-cpucp-mbox.c: In function 'qcom_cpucp_mbox_irq_fn':
>> drivers/mailbox/qcom-cpucp-mbox.c:54:18: error: implicit declaration of function 'readq'; did you mean 'readb'? [-Werror=implicit-function-declaration]
      54 |         status = readq(cpucp->rx_base + APSS_CPUCP_RX_MBOX_STAT);
         |                  ^~~~~
         |                  readb
>> drivers/mailbox/qcom-cpucp-mbox.c:65:17: error: implicit declaration of function 'writeq'; did you mean 'writeb'? [-Werror=implicit-function-declaration]
      65 |                 writeq(BIT(i), cpucp->rx_base + APSS_CPUCP_RX_MBOX_CLEAR);
         |                 ^~~~~~
         |                 writeb
   cc1: some warnings being treated as errors


vim +54 drivers/mailbox/qcom-cpucp-mbox.c

    47	
    48	static irqreturn_t qcom_cpucp_mbox_irq_fn(int irq, void *data)
    49	{
    50		struct qcom_cpucp_mbox *cpucp = data;
    51		u64 status;
    52		int i;
    53	
  > 54		status = readq(cpucp->rx_base + APSS_CPUCP_RX_MBOX_STAT);
    55	
    56		for_each_set_bit(i, (unsigned long *)&status, APSS_CPUCP_IPC_CHAN_SUPPORTED) {
    57			u32 val = readl(cpucp->rx_base + APSS_CPUCP_RX_MBOX_CMD(i) + APSS_CPUCP_MBOX_CMD_OFF);
    58			struct mbox_chan *chan = &cpucp->chans[i];
    59			unsigned long flags;
    60	
    61			/* Provide mutual exclusion with changes to chan->cl */
    62			spin_lock_irqsave(&chan->lock, flags);
    63			if (chan->cl)
    64				mbox_chan_received_data(chan, &val);
  > 65			writeq(BIT(i), cpucp->rx_base + APSS_CPUCP_RX_MBOX_CLEAR);
    66			spin_unlock_irqrestore(&chan->lock, flags);
    67		}
    68	
    69		return IRQ_HANDLED;
    70	}
    71	

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