linux-kernel - [tip:irq/core 2/2] kernel/irq/irq_sim.c:246 devm_irq_domain_create_sim() warn: passing zero to 'ERR

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Date:   Tue, 30 Mar 2021 12:58:59 +0300
From:   Dan Carpenter <dan.carpenter@...cle.com>
To:     kbuild@...ts.01.org,
        Bartosz Golaszewski <bgolaszewski@...libre.com>
Cc:     lkp@...el.com, kbuild-all@...ts.01.org,
        linux-kernel@...r.kernel.org, x86@...nel.org,
        Thomas Gleixner <tglx@...utronix.de>
Subject: [tip:irq/core 2/2] kernel/irq/irq_sim.c:246
 devm_irq_domain_create_sim() warn: passing zero to 'ERR_PTR'

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git irq/core
head:   e6d46eded43dacf6370a7ae70f927ef4692cfcab
commit: e6d46eded43dacf6370a7ae70f927ef4692cfcab [2/2] genirq/irq_sim: Shrink devm_irq_domain_create_sim()
config: x86_64-randconfig-m001-20210328 (attached as .config)
compiler: gcc-9 (Debian 9.3.0-22) 9.3.0

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@...el.com>
Reported-by: Dan Carpenter <dan.carpenter@...cle.com>

smatch warnings:
kernel/irq/irq_sim.c:246 devm_irq_domain_create_sim() warn: passing zero to 'ERR_PTR'

vim +/ERR_PTR +246 kernel/irq/irq_sim.c

337cbeb2c13eb4 Bartosz Golaszewski 2020-05-14  233  struct irq_domain *devm_irq_domain_create_sim(struct device *dev,
337cbeb2c13eb4 Bartosz Golaszewski 2020-05-14  234  					      struct fwnode_handle *fwnode,
44e72c7ebf2940 Bartosz Golaszewski 2017-08-14  235  					      unsigned int num_irqs)
44e72c7ebf2940 Bartosz Golaszewski 2017-08-14  236  {
e6d46eded43dac Bartosz Golaszewski 2021-03-01  237  	struct irq_domain *domain;
e6d46eded43dac Bartosz Golaszewski 2021-03-01  238  	int ret;
44e72c7ebf2940 Bartosz Golaszewski 2017-08-14  239  
e6d46eded43dac Bartosz Golaszewski 2021-03-01  240  	domain = irq_domain_create_sim(fwnode, num_irqs);
e6d46eded43dac Bartosz Golaszewski 2021-03-01  241  	if (IS_ERR(domain))
e6d46eded43dac Bartosz Golaszewski 2021-03-01  242  		return domain;
44e72c7ebf2940 Bartosz Golaszewski 2017-08-14  243  
e6d46eded43dac Bartosz Golaszewski 2021-03-01  244  	ret = devm_add_action_or_reset(dev, devm_irq_domain_remove_sim, domain);
e6d46eded43dac Bartosz Golaszewski 2021-03-01  245  	if (!ret)
                                                             ^^^
This is probably reversed.  It should be "if (ret)"

e6d46eded43dac Bartosz Golaszewski 2021-03-01 @246  		return ERR_PTR(ret);

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

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