[linux-chenxing:mstar_v5_14_rebase_i2_drm 203/349] drivers/irqchip/irq-msc313-pm-wakeup.c:137:2: warning: ignoring return value of 'request_irq' declared with attribute 'warn_unused_result'

From: kernel test robot
Date: Sun Jul 18 2021 - 21:45:00 EST


tree: git://github.com/linux-chenxing/linux.git mstar_v5_14_rebase_i2_drm
head: 93dfb2364436067bf34c6d4ddcd282496182cc0f
commit: a19d27ac78ef431e6bf1e00a85d676ac5d051650 [203/349] ARM: mstar: wakeup intc
config: s390-allyesconfig (attached as .config)
compiler: s390-linux-gcc (GCC) 10.3.0
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/a19d27ac78ef431e6bf1e00a85d676ac5d051650
git remote add linux-chenxing git://github.com/linux-chenxing/linux.git
git fetch --no-tags linux-chenxing mstar_v5_14_rebase_i2_drm
git checkout a19d27ac78ef431e6bf1e00a85d676ac5d051650
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-10.3.0 make.cross ARCH=s390

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:137:2: warning: ignoring return value of 'request_irq' declared with attribute 'warn_unused_result' [-Wunused-result]
137 | request_irq(irq, msc313_pm_wakeup_intc_chainedhandler, IRQF_SHARED,
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
138 | "pmsleep", domain);
| ~~~~~~~~~~~~~~~~~~


vim +137 drivers/irqchip/irq-msc313-pm-wakeup.c

100
101 static int __init msc313_pm_wakeup_intc_of_init(struct device_node *node,
102 struct device_node *parent)
103 {
104 int ret = 0, irq;
105 struct regmap *pmsleep;
106 struct msc313_sleep_intc *intc;
107 struct irq_domain *domain;
108
109 irq = of_irq_get(node, 0);
110 if (irq <= 0)
111 return irq;
112
113 pmsleep = syscon_regmap_lookup_by_phandle(node, "mstar,pmsleep");
114 if(IS_ERR(pmsleep))
115 return PTR_ERR(pmsleep);
116
117 intc = kzalloc(sizeof(*intc), GFP_KERNEL);
118 if (!intc)
119 return -ENOMEM;
120
121 intc->mask = regmap_field_alloc(pmsleep, field_mask);
122 intc->type = regmap_field_alloc(pmsleep, field_type);
123 intc->status = regmap_field_alloc(pmsleep, field_status);
124
125 /*
126 * The masks survive deep sleep so clear them.
127 */
128 regmap_field_write(intc->mask, ~0);
129
130 domain = irq_domain_add_linear(node, NUM_IRQ,
131 &msc313_pm_wakeup_intc_domain_ops, intc);
132 if (!domain) {
133 ret = -ENOMEM;
134 goto out_free;
135 }
136
> 137 request_irq(irq, msc313_pm_wakeup_intc_chainedhandler, IRQF_SHARED,
138 "pmsleep", domain);
139
140 return 0;
141
142 out_free:
143 kfree(intc);
144 return ret;
145 }
146

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

Attachment: .config.gz
Description: application/gzip