linux-kernel - Re: [PATCH] pinctrl-adi2: Use a signed return type for adi_gpio_irq

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Date:	Sun, 20 Dec 2015 05:54:45 +0800
From:	kbuild test robot <lkp@...el.com>
To:	SF Markus Elfring <elfring@...rs.sourceforge.net>
Cc:	kbuild-all@...org, linux-gpio@...r.kernel.org,
	Linus Walleij <linus.walleij@...aro.org>,
	LKML <linux-kernel@...r.kernel.org>,
	kernel-janitors@...r.kernel.org,
	Julia Lawall <julia.lawall@...6.fr>
Subject: Re: [PATCH] pinctrl-adi2: Use a signed return type for
 adi_gpio_irq_startup()

Hi Markus,

[auto build test WARNING on pinctrl/for-next]
[also build test WARNING on v4.4-rc5 next-20151218]

url:    https://github.com/0day-ci/linux/commits/SF-Markus-Elfring/pinctrl-adi2-Use-a-signed-return-type-for-adi_gpio_irq_startup/20151220-010253
base:   https://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl.git for-next
config: blackfin-CM-BF548_defconfig (attached as .config)
reproduce:
        wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # save the attached .config to linux build tree
        make.cross ARCH=blackfin 

All warnings (new ones prefixed by >>):

>> drivers/pinctrl/pinctrl-adi2.c:584:2: warning: initialization from incompatible pointer type [enabled by default]
   drivers/pinctrl/pinctrl-adi2.c:584:2: warning: (near initialization for 'adi_gpio_irqchip.irq_startup') [enabled by default]

vim +584 drivers/pinctrl/pinctrl-adi2.c

e9a03add Sonic Zhang 2013-09-03  568  		request >>= 1;
e9a03add Sonic Zhang 2013-09-03  569  	}
e9a03add Sonic Zhang 2013-09-03  570  
e9a03add Sonic Zhang 2013-09-03  571  	if (!umask)
e9a03add Sonic Zhang 2013-09-03  572  		chained_irq_exit(chip, desc);
e9a03add Sonic Zhang 2013-09-03  573  }
e9a03add Sonic Zhang 2013-09-03  574  
e9a03add Sonic Zhang 2013-09-03  575  static struct irq_chip adi_gpio_irqchip = {
e9a03add Sonic Zhang 2013-09-03  576  	.name = "GPIO",
e9a03add Sonic Zhang 2013-09-03  577  	.irq_ack = adi_gpio_ack_irq,
e9a03add Sonic Zhang 2013-09-03  578  	.irq_mask = adi_gpio_mask_irq,
e9a03add Sonic Zhang 2013-09-03  579  	.irq_mask_ack = adi_gpio_mask_ack_irq,
e9a03add Sonic Zhang 2013-09-03  580  	.irq_unmask = adi_gpio_unmask_irq,
e9a03add Sonic Zhang 2013-09-03  581  	.irq_disable = adi_gpio_mask_irq,
e9a03add Sonic Zhang 2013-09-03  582  	.irq_enable = adi_gpio_unmask_irq,
e9a03add Sonic Zhang 2013-09-03  583  	.irq_set_type = adi_gpio_irq_type,
e9a03add Sonic Zhang 2013-09-03 @584  	.irq_startup = adi_gpio_irq_startup,
e9a03add Sonic Zhang 2013-09-03  585  	.irq_shutdown = adi_gpio_irq_shutdown,
e9a03add Sonic Zhang 2013-09-03  586  	.irq_set_wake = adi_gpio_set_wake,
e9a03add Sonic Zhang 2013-09-03  587  };
e9a03add Sonic Zhang 2013-09-03  588  
e9a03add Sonic Zhang 2013-09-03  589  static int adi_get_groups_count(struct pinctrl_dev *pctldev)
e9a03add Sonic Zhang 2013-09-03  590  {
e9a03add Sonic Zhang 2013-09-03  591  	struct adi_pinctrl *pinctrl = pinctrl_dev_get_drvdata(pctldev);
e9a03add Sonic Zhang 2013-09-03  592  

:::::: The code at line 584 was first introduced by commit
:::::: e9a03add0c6ed5341fc59ff9c76843c2888a33fa pinctrl: ADI PIN control driver for the GPIO controller on bf54x and bf60x.

:::::: TO: Sonic Zhang <sonic.zhang@...log.com>
:::::: CC: Linus Walleij <linus.walleij@...aro.org>

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