Re: [PATCH v14 7/9] irqchip: Add Sunplus SP7021 interrupt controller driver

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

Hi Qin,

I love your patch! Perhaps something to improve:

[auto build test WARNING on pza/reset/next]
[also build test WARNING on clk/clk-next tip/irq/core linus/master v5.18-rc5 next-20220506]
[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/intel-lab-lkp/linux/commits/Qin-Jian/Add-Sunplus-SP7021-SoC-Support/20220506-113239
base:   https://git.pengutronix.de/git/pza/linux reset/next
config: arm64-allmodconfig (https://download.01.org/0day-ci/archive/20220507/202205070356.RRuPT69d-lkp@intel.com/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 5e004fb787698440a387750db7f8028e7cb14cfc)
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
        # install arm64 cross compiling tool for clang build
        # apt-get install binutils-aarch64-linux-gnu
        # https://github.com/intel-lab-lkp/linux/commit/e4d57016693163887d81dfa4c0b0db3e4437cf2b
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Qin-Jian/Add-Sunplus-SP7021-SoC-Support/20220506-113239
        git checkout e4d57016693163887d81dfa4c0b0db3e4437cf2b
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=arm64 SHELL=/bin/bash drivers/irqchip/

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

All warnings (new ones prefixed by >>):

>> drivers/irqchip/irq-sp7021-intc.c:170:16: warning: cast to smaller integer type 'int' from 'void *' [-Wvoid-pointer-to-int-cast]
           int ext_num = (int)irq_desc_get_handler_data(desc);
                         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>> drivers/irqchip/irq-sp7021-intc.c:218:69: warning: cast to 'void *' from smaller integer type 'int' [-Wint-to-void-pointer-cast]
           irq_set_chained_handler_and_data(irq, sp_intc_handle_ext_cascaded, (void *)i);
                                                                              ^~~~~~~~~
   2 warnings generated.


vim +170 drivers/irqchip/irq-sp7021-intc.c

   166	
   167	static void sp_intc_handle_ext_cascaded(struct irq_desc *desc)
   168	{
   169		struct irq_chip *chip = irq_desc_get_chip(desc);
 > 170		int ext_num = (int)irq_desc_get_handler_data(desc);
   171		int hwirq;
   172	
   173		chained_irq_enter(chip, desc);
   174	
   175		while ((hwirq = sp_intc_get_ext_irq(ext_num)) >= 0) {
   176			if (unlikely(IS_GPIO_INT(hwirq) && TEST_STATE(hwirq, _IS_ACTIVE))) { // WORKAROUND
   177				ASSIGN_STATE(hwirq, _IS_ACTIVE, false);
   178				sp_intc_assign_bit(hwirq, REG_INTR_POLARITY, TEST_STATE(hwirq, _IS_LOW));
   179			} else {
   180				generic_handle_domain_irq(sp_intc.domain, hwirq);
   181			}
   182		}
   183	
   184		chained_irq_exit(chip, desc);
   185	}
   186	
   187	static struct irq_chip sp_intc_chip = {
   188		.name = "sp_intc",
   189		.irq_ack = sp_intc_ack_irq,
   190		.irq_mask = sp_intc_mask_irq,
   191		.irq_unmask = sp_intc_unmask_irq,
   192		.irq_set_type = sp_intc_set_type,
   193	};
   194	
   195	static int sp_intc_irq_domain_map(struct irq_domain *domain,
   196					  unsigned int irq, irq_hw_number_t hwirq)
   197	{
   198		irq_set_chip_and_handler(irq, &sp_intc_chip, handle_level_irq);
   199		irq_set_chip_data(irq, &sp_intc_chip);
   200		irq_set_noprobe(irq);
   201	
   202		return 0;
   203	}
   204	
   205	static const struct irq_domain_ops sp_intc_dm_ops = {
   206		.xlate = irq_domain_xlate_twocell,
   207		.map = sp_intc_irq_domain_map,
   208	};
   209	
   210	static int sp_intc_irq_map(struct device_node *node, int i)
   211	{
   212		unsigned int irq;
   213	
   214		irq = irq_of_parse_and_map(node, i);
   215		if (!irq)
   216			return -ENOENT;
   217	
 > 218		irq_set_chained_handler_and_data(irq, sp_intc_handle_ext_cascaded, (void *)i);
   219	
   220		return 0;
   221	}
   222	

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