[chenxing:msc313_mainlining 68/69] drivers/irqchip/irq-msc313-pm-wakeup.c:132:9: warning: ignoring return value of 'request_irq' declared with attribute 'warn_unused_result'

From: kernel test robot
Date: Wed Nov 24 2021 - 20:27:42 EST


tree: git://github.com/linux-chenxing/linux.git msc313_mainlining
head: df6df62e60f3a32773b02a41e0d6a4e0f2b353b5
commit: 294ac78fcc3c89b63c48a5f85d4352de0a73b078 [68/69] irqchip: MStar wakeup intc
config: nds32-randconfig-r015-20211121 (https://download.01.org/0day-ci/archive/20211125/202111250904.kvuzQUx7-lkp@xxxxxxxxx/config)
compiler: nds32le-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/linux-chenxing/linux/commit/294ac78fcc3c89b63c48a5f85d4352de0a73b078
git remote add chenxing git://github.com/linux-chenxing/linux.git
git fetch --no-tags chenxing msc313_mainlining
git checkout 294ac78fcc3c89b63c48a5f85d4352de0a73b078
# save the config file to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross ARCH=nds32

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

All warnings (new ones prefixed by >>):

drivers/irqchip/irq-msc313-pm-wakeup.c: In function 'msc313_pm_wakeup_intc_of_init':
>> drivers/irqchip/irq-msc313-pm-wakeup.c:132:9: warning: ignoring return value of 'request_irq' declared with attribute 'warn_unused_result' [-Wunused-result]
132 | request_irq(irq, msc313_pm_wakeup_intc_chainedhandler, IRQF_SHARED,
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
133 | "pmsleep", domain);
| ~~~~~~~~~~~~~~~~~~


vim +132 drivers/irqchip/irq-msc313-pm-wakeup.c

97
98 static int __init msc313_pm_wakeup_intc_of_init(struct device_node *node,
99 struct device_node *parent)
100 {
101 int ret = 0, irq;
102 struct regmap *pmsleep;
103 struct msc313_sleep_intc *intc;
104 struct irq_domain *domain;
105
106 irq = of_irq_get(node, 0);
107 if (irq <= 0)
108 return irq;
109
110 pmsleep = syscon_regmap_lookup_by_phandle(node, "mstar,pmsleep");
111 if (IS_ERR(pmsleep))
112 return PTR_ERR(pmsleep);
113
114 intc = kzalloc(sizeof(*intc), GFP_KERNEL);
115 if (!intc)
116 return -ENOMEM;
117
118 intc->mask = regmap_field_alloc(pmsleep, field_mask);
119 intc->type = regmap_field_alloc(pmsleep, field_type);
120 intc->status = regmap_field_alloc(pmsleep, field_status);
121
122 /* The masks survive deep sleep so clear them. */
123 regmap_field_write(intc->mask, ~0);
124
125 domain = irq_domain_add_linear(node, NUM_IRQ,
126 &msc313_pm_wakeup_intc_domain_ops, intc);
127 if (!domain) {
128 ret = -ENOMEM;
129 goto out_free;
130 }
131
> 132 request_irq(irq, msc313_pm_wakeup_intc_chainedhandler, IRQF_SHARED,
133 "pmsleep", domain);
134
135 return 0;
136
137 out_free:
138 kfree(intc);
139 return ret;
140 }
141

---
0-DAY CI Kernel Test Service, Intel Corporation
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