Re: drivers/pinctrl/intel/pinctrl-merrifield.c:518:10: error: implicit declaration of function 'readl'

[Andy Shevchenko]

On Mon, 2016-08-08 at 09:41 +0800, kbuild test robot wrote:
> tree:ÂÂÂhttps://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux
> .git master
> head:ÂÂÂ29b4817d4018df78086157ea3a55c1d9424a7cfc
> commit: 4e80c8f505741cbdef3e10862ea36057e8d85e7c pinctrl: intel: Add
> Intel Merrifield pin controller support
> date:ÂÂÂ6 weeks ago
> config: x86_64-randconfig-x012-201632 (attached as .config)
> compiler: gcc-6 (Debian 6.1.1-9) 6.1.1 20160705
> reproduce:
> ÂÂÂÂÂÂÂÂgit checkout 4e80c8f505741cbdef3e10862ea36057e8d85e7c
> ÂÂÂÂÂÂÂÂ# save the attached .config to linux build tree
> ÂÂÂÂÂÂÂÂmake ARCH=x86_64Â
> 
> All errors (new ones prefixed by >>):

Patch was sent quite before this report has been generated.
https://patchwork.ozlabs.org/patch/654916/


> 
> ÂÂÂdrivers/pinctrl/intel/pinctrl-merrifield.c: In function
> 'mrfld_pin_dbg_show':
> > > drivers/pinctrl/intel/pinctrl-merrifield.c:518:10: error: implicit
> > > declaration of function 'readl' [-Werror=implicit-function-
> > > declaration]
> ÂÂÂÂÂvalue = readl(bufcfg);
> ÂÂÂÂÂÂÂÂÂÂÂÂÂ^~~~~
> ÂÂÂdrivers/pinctrl/intel/pinctrl-merrifield.c: In function
> 'mrfld_update_bufcfg':
> > > drivers/pinctrl/intel/pinctrl-merrifield.c:575:2: error: implicit
> > > declaration of function 'writel' [-Werror=implicit-function-
> > > declaration]
> ÂÂÂÂÂwritel(value, bufcfg);
> ÂÂÂÂÂ^~~~~~
> ÂÂÂcc1: some warnings being treated as errors
> 
> vim +/readl +518 drivers/pinctrl/intel/pinctrl-merrifield.c
> 
> ÂÂÂ512		if (!mrfld_buf_available(mp, pin)) {
> ÂÂÂ513			seq_puts(s, "not available");
> ÂÂÂ514			return;
> ÂÂÂ515		}
> ÂÂÂ516	
> ÂÂÂ517		bufcfg = mrfld_get_bufcfg(mp, pin);
> Â> 518		value = readl(bufcfg);
> ÂÂÂ519	
> ÂÂÂ520		mode = (value & BUFCFG_PINMODE_MASK) >>
> BUFCFG_PINMODE_SHIFT;
> ÂÂÂ521		if (!mode)
> ÂÂÂ522			seq_puts(s, "GPIO ");
> ÂÂÂ523		else
> ÂÂÂ524			seq_printf(s, "mode %d ", mode);
> ÂÂÂ525	
> ÂÂÂ526		seq_printf(s, "0x%08x", value);
> ÂÂÂ527	}
> ÂÂÂ528	
> ÂÂÂ529	static const struct pinctrl_ops mrfld_pinctrl_ops = {
> ÂÂÂ530		.get_groups_count = mrfld_get_groups_count,
> ÂÂÂ531		.get_group_name = mrfld_get_group_name,
> ÂÂÂ532		.get_group_pins = mrfld_get_group_pins,
> ÂÂÂ533		.pin_dbg_show = mrfld_pin_dbg_show,
> ÂÂÂ534	};
> ÂÂÂ535	
> ÂÂÂ536	static int mrfld_get_functions_count(struct pinctrl_dev
> *pctldev)
> ÂÂÂ537	{
> ÂÂÂ538		struct mrfld_pinctrl *mp =
> pinctrl_dev_get_drvdata(pctldev);
> ÂÂÂ539	
> ÂÂÂ540		return mp->nfunctions;
> ÂÂÂ541	}
> ÂÂÂ542	
> ÂÂÂ543	static const char *mrfld_get_function_name(struct
> pinctrl_dev *pctldev,
> ÂÂÂ544						ÂÂÂunsigned int
> function)
> ÂÂÂ545	{
> ÂÂÂ546		struct mrfld_pinctrl *mp =
> pinctrl_dev_get_drvdata(pctldev);
> ÂÂÂ547	
> ÂÂÂ548		return mp->functions[function].name;
> ÂÂÂ549	}
> ÂÂÂ550	
> ÂÂÂ551	static int mrfld_get_function_groups(struct pinctrl_dev
> *pctldev,
> ÂÂÂ552					ÂÂÂÂÂunsigned int
> function,
> ÂÂÂ553					ÂÂÂÂÂconst char * const
> **groups,
> ÂÂÂ554					ÂÂÂÂÂunsigned int *
> const ngroups)
> ÂÂÂ555	{
> ÂÂÂ556		struct mrfld_pinctrl *mp =
> pinctrl_dev_get_drvdata(pctldev);
> ÂÂÂ557	
> ÂÂÂ558		*groups = mp->functions[function].groups;
> ÂÂÂ559		*ngroups = mp->functions[function].ngroups;
> ÂÂÂ560		return 0;
> ÂÂÂ561	}
> ÂÂÂ562	
> ÂÂÂ563	static void mrfld_update_bufcfg(struct mrfld_pinctrl
> *mp, unsigned int pin,
> ÂÂÂ564					u32 bits, u32 mask)
> ÂÂÂ565	{
> ÂÂÂ566		void __iomem *bufcfg;
> ÂÂÂ567		u32 value;
> ÂÂÂ568	
> ÂÂÂ569		bufcfg = mrfld_get_bufcfg(mp, pin);
> ÂÂÂ570		value = readl(bufcfg);
> ÂÂÂ571	
> ÂÂÂ572		value &= ~mask;
> ÂÂÂ573		value |= bits & mask;
> ÂÂÂ574	
> Â> 575		writel(value, bufcfg);
> ÂÂÂ576	}
> ÂÂÂ577	
> ÂÂÂ578	static int mrfld_pinmux_set_mux(struct pinctrl_dev
> *pctldev,
> 
> ---
> 0-DAY kernel test infrastructureÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂOpen Source Technology
> Center
> https://lists.01.org/pipermail/kbuild-allÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂIntel
> Corporation

-- 

Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
Intel Finland Oy