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SubjectRe: [PATCH v3 8/8] irqchip: Add Sunplus SP7021 interrupt controller driver
Hi Qin,

I love your patch! Perhaps something to improve:

[auto build test WARNING on pza/reset/next]
[also build test WARNING on robh/for-next clk/clk-next linus/master v5.15]
[cannot apply to tip/irq/core next-20211029]
[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/Qin-Jian/dt-bindings-vendor-prefixes-Add-Sunplus/20211101-140155
base: https://git.pengutronix.de/git/pza/linux reset/next
config: sparc-randconfig-r011-20211101 (attached as .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/ca53c40693bc90c44e3ec4c95c7758d7342229e2
git remote add linux-review https://github.com/0day-ci/linux
git fetch --no-tags linux-review Qin-Jian/dt-bindings-vendor-prefixes-Add-Sunplus/20211101-140155
git checkout ca53c40693bc90c44e3ec4c95c7758d7342229e2
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross ARCH=sparc

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: In function 'sp_intc_handle_ext_cascaded':
>> drivers/irqchip/irq-sp7021-intc.c:154:23: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]
154 | int ext_num = (int)irq_desc_get_handler_data(desc);
| ^
drivers/irqchip/irq-sp7021-intc.c: In function 'sp_intc_irq_map':
>> drivers/irqchip/irq-sp7021-intc.c:212:76: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
212 | irq_set_chained_handler_and_data(irq, sp_intc_handle_ext_cascaded, (void *)i);
| ^
drivers/irqchip/irq-sp7021-intc.c: At top level:
drivers/irqchip/irq-sp7021-intc.c:217:6: warning: no previous prototype for 'sp_intc_set_ext' [-Wmissing-prototypes]
217 | void sp_intc_set_ext(u32 hwirq, int ext_num)
| ^~~~~~~~~~~~~~~
drivers/irqchip/irq-sp7021-intc.c:223:12: warning: no previous prototype for 'sp_intc_init_dt' [-Wmissing-prototypes]
223 | int __init sp_intc_init_dt(struct device_node *node, struct device_node *parent)
| ^~~~~~~~~~~~~~~


vim +154 drivers/irqchip/irq-sp7021-intc.c

150
151 static void sp_intc_handle_ext_cascaded(struct irq_desc *desc)
152 {
153 struct irq_chip *chip = irq_desc_get_chip(desc);
> 154 int ext_num = (int)irq_desc_get_handler_data(desc);
155 int hwirq;
156
157 chained_irq_enter(chip, desc);
158
159 while ((hwirq = sp_intc_get_ext_irq(ext_num)) >= 0) {
160 if (unlikely(IS_GPIO_INT(hwirq) && TEST_STATE(hwirq, _IS_ACTIVE))) { // WORKAROUND
161 ASSIGN_STATE(hwirq, _IS_ACTIVE, false);
162 sp_intc_assign_bit(hwirq, REG_INTR_POLARITY, TEST_STATE(hwirq, _IS_LOW));
163 } else {
164 generic_handle_domain_irq(sp_intc.domain, hwirq);
165 }
166 }
167
168 chained_irq_exit(chip, desc);
169 }
170
171 #ifdef CONFIG_SMP
172 static int sp_intc_set_affinity(struct irq_data *d, const struct cpumask *mask, bool force)
173 {
174 return -EINVAL;
175 }
176 #endif
177
178 static struct irq_chip sp_intc_chip = {
179 .name = "sp_intc",
180 .irq_ack = sp_intc_ack_irq,
181 .irq_mask = sp_intc_mask_irq,
182 .irq_unmask = sp_intc_unmask_irq,
183 .irq_set_type = sp_intc_set_type,
184 #ifdef CONFIG_SMP
185 .irq_set_affinity = sp_intc_set_affinity,
186 #endif
187 };
188
189 static int sp_intc_irq_domain_map(struct irq_domain *domain,
190 unsigned int irq, irq_hw_number_t hwirq)
191 {
192 irq_set_chip_and_handler(irq, &sp_intc_chip, handle_level_irq);
193 irq_set_chip_data(irq, &sp_intc_chip);
194 irq_set_noprobe(irq);
195
196 return 0;
197 }
198
199 static const struct irq_domain_ops sp_intc_dm_ops = {
200 .xlate = irq_domain_xlate_twocell,
201 .map = sp_intc_irq_domain_map,
202 };
203
204 static int sp_intc_irq_map(struct device_node *node, int i)
205 {
206 unsigned int irq;
207
208 irq = irq_of_parse_and_map(node, i);
209 if (!irq)
210 return -ENOENT;
211
> 212 irq_set_chained_handler_and_data(irq, sp_intc_handle_ext_cascaded, (void *)i);
213
214 return 0;
215 }
216

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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