Re: [PATCH 2/2] clocksource/drivers: Add Realtek Otto timer driver

[kernel test robot]

Hi Sander,

I love your patch! Yet something to improve:

[auto build test ERROR on next-20220116]
[cannot apply to tip/timers/core linux/master linus/master daniel-lezcano/clockevents/next v5.16 v5.16-rc8 v5.16-rc7 v5.16]
[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/Sander-Vanheule/Realtek-Otto-timer-counter-support/20220117-054003
base:    70e6f1b39929bf6755a9c55b79fe720f7c8b9436
config: sparc-allyesconfig (https://download.01.org/0day-ci/archive/20220117/202201171557.EmiIHtdJ-lkp@xxxxxxxxx/config)
compiler: sparc64-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/0day-ci/linux/commit/1c346209c6655c06ab28df22f821ffa06a792a14
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Sander-Vanheule/Realtek-Otto-timer-counter-support/20220117-054003
        git checkout 1c346209c6655c06ab28df22f821ffa06a792a14
        # save the config file to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=sparc SHELL=/bin/bash

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@xxxxxxxxx>

All errors (new ones prefixed by >>):

   drivers/clocksource/timer-realtek-otto.c: In function 'otto_tc_init':
>> drivers/clocksource/timer-realtek-otto.c:182:16: error: implicit declaration of function 'kzalloc'; did you mean 'd_alloc'? [-Werror=implicit-function-declaration]
     182 |         ctrl = kzalloc(sizeof(*ctrl), GFP_KERNEL);
         |                ^~~~~~~
         |                d_alloc
   drivers/clocksource/timer-realtek-otto.c:182:14: warning: assignment to 'struct otto_tc_ctrl *' from 'int' makes pointer from integer without a cast [-Wint-conversion]
     182 |         ctrl = kzalloc(sizeof(*ctrl), GFP_KERNEL);
         |              ^
>> drivers/clocksource/timer-realtek-otto.c:212:9: error: implicit declaration of function 'kfree' [-Werror=implicit-function-declaration]
     212 |         kfree(ctrl);
         |         ^~~~~
   cc1: some warnings being treated as errors


vim +182 drivers/clocksource/timer-realtek-otto.c

   176	
   177	static int __init otto_tc_init(struct device_node *node)
   178	{
   179		struct otto_tc_ctrl *ctrl;
   180		int err;
   181	
 > 182		ctrl = kzalloc(sizeof(*ctrl), GFP_KERNEL);
   183		if (!ctrl)
   184			return -ENOMEM;
   185	
   186		spin_lock_init(&ctrl->lock);
   187	
   188		ctrl->to.flags = TIMER_OF_BASE | TIMER_OF_IRQ | TIMER_OF_CLOCK;
   189		ctrl->to.of_clk.name = "bus";
   190		ctrl->to.of_irq.flags = IRQF_TIMER;
   191		ctrl->to.of_irq.handler = otto_tc_handler;
   192	
   193		err = timer_of_init(node, &ctrl->to);
   194		if (err)
   195			goto err_out;
   196	
   197		/* Reset timer state */
   198		writel(0, OTTO_TC_REG_CTL(&ctrl->to));
   199		writel(0, OTTO_TC_REG_DATA(&ctrl->to));
   200	
   201		/* TODO Replace by a real derived clock */
   202		otto_tc_set_divisor(ctrl, OTTO_TC_MIN_DIVISOR);
   203		ctrl->to.of_clk.rate /= OTTO_TC_MIN_DIVISOR;
   204		ctrl->to.of_clk.period /= OTTO_TC_MIN_DIVISOR;
   205	
   206		otto_tc_irq_enable_clear(&ctrl->to);
   207		otto_tc_init_clkevt(&ctrl->to);
   208	
   209		return 0;
   210	
   211	err_out:
 > 212		kfree(ctrl);

---
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