linux-kernel - Re: [PATCH v5 2/2] rtc: support for the Amlogic Meson RTC

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Date:   Wed, 5 Dec 2018 21:11:09 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Martin Blumenstingl <martin.blumenstingl@...glemail.com>
Cc:     kbuild-all@...org, linux-amlogic@...ts.infradead.org,
        linux-rtc@...r.kernel.org, alexandre.belloni@...tlin.com,
        a.zummo@...ertech.it, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, ben.dooks@...ethink.co.uk,
        ccaione@...libre.com,
        Martin Blumenstingl <martin.blumenstingl@...glemail.com>
Subject: Re: [PATCH v5 2/2] rtc: support for the Amlogic Meson RTC

Hi Martin,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on abelloni/rtc-next]
[also build test ERROR on v4.20-rc5 next-20181204]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url:    https://github.com/0day-ci/linux/commits/Martin-Blumenstingl/Amlogic-Meson6-8-8b-8m2-SoC-RTC-driver/20181204-002803
base:   https://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux.git rtc-next
config: sparc64-allyesconfig (attached as .config)
compiler: sparc64-linux-gnu-gcc (Debian 7.2.0-11) 7.2.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # save the attached .config to linux build tree
        GCC_VERSION=7.2.0 make.cross ARCH=sparc64 

All errors (new ones prefixed by >>):

   drivers/rtc/rtc-meson.c: In function 'meson_rtc_probe':
>> drivers/rtc/rtc-meson.c:288:11: error: 'SZ_16' undeclared (first use in this function); did you mean 'SF_L6'?
      .size = SZ_16,
              ^~~~~
              SF_L6
   drivers/rtc/rtc-meson.c:288:11: note: each undeclared identifier is reported only once for each function it appears in

vim +288 drivers/rtc/rtc-meson.c

   281	
   282	static int meson_rtc_probe(struct platform_device *pdev)
   283	{
   284		struct nvmem_config meson_rtc_nvmem_config = {
   285			.name = "meson-rtc-regmem",
   286			.word_size = 4,
   287			.stride = 4,
 > 288			.size = SZ_16,
   289			.reg_read = meson_rtc_regmem_read,
   290			.reg_write = meson_rtc_regmem_write,
   291		};
   292		struct device *dev = &pdev->dev;
   293		struct meson_rtc *rtc;
   294		struct resource *res;
   295		void __iomem *base;
   296		int ret;
   297		u32 tm;
   298	
   299		rtc = devm_kzalloc(dev, sizeof(struct meson_rtc), GFP_KERNEL);
   300		if (!rtc)
   301			return -ENOMEM;
   302	
   303		rtc->rtc = devm_rtc_allocate_device(dev);
   304		if (IS_ERR(rtc->rtc))
   305			return PTR_ERR(rtc->rtc);
   306	
   307		platform_set_drvdata(pdev, rtc);
   308	
   309		rtc->dev = dev;
   310	
   311		rtc->rtc->ops = &meson_rtc_ops;
   312		rtc->rtc->range_max = U32_MAX;
   313	
   314		res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
   315		base = devm_ioremap_resource(dev, res);
   316		if (IS_ERR(base))
   317			return PTR_ERR(base);
   318	
   319		rtc->peripheral = devm_regmap_init_mmio(dev, base,
   320						&meson_rtc_peripheral_regmap_config);
   321		if (IS_ERR(rtc->peripheral)) {
   322			dev_err(dev, "failed to create peripheral regmap\n");
   323			return PTR_ERR(rtc->peripheral);
   324		}
   325	
   326		rtc->reset = devm_reset_control_get(dev, NULL);
   327		if (IS_ERR(rtc->reset)) {
   328			dev_err(dev, "missing reset line\n");
   329			return PTR_ERR(rtc->reset);
   330		}
   331	
   332		rtc->vdd = devm_regulator_get(dev, "vdd");
   333		if (IS_ERR(rtc->vdd)) {
   334			dev_err(dev, "failed to get the vdd-supply\n");
   335			return PTR_ERR(rtc->vdd);
   336		}
   337	
   338		ret = regulator_enable(rtc->vdd);
   339		if (ret) {
   340			dev_err(dev, "failed to enable vdd-supply\n");
   341			return ret;
   342		}
   343	
   344		ret = meson_rtc_write_static(rtc, MESON_STATIC_DEFAULT);
   345		if (ret) {
   346			dev_err(dev, "failed to set static values\n");
   347			goto out_disable_vdd;
   348		}
   349	
   350		rtc->serial = devm_regmap_init(dev, &meson_rtc_serial_bus, rtc,
   351					       &meson_rtc_serial_regmap_config);
   352		if (IS_ERR(rtc->serial)) {
   353			dev_err(dev, "failed to create serial regmap\n");
   354			ret = PTR_ERR(rtc->serial);
   355			goto out_disable_vdd;
   356		}
   357	
   358		/*
   359		 * check if we can read RTC counter, if not then the RTC is probably
   360		 * not functional. If it isn't probably best to not bind.
   361		 */
   362		ret = regmap_read(rtc->serial, RTC_COUNTER, &tm);
   363		if (ret) {
   364			dev_err(dev, "cannot read RTC counter, RTC not functional\n");
   365			goto out_disable_vdd;
   366		}
   367	
   368		meson_rtc_nvmem_config.priv = rtc;
   369		ret = rtc_nvmem_register(rtc->rtc, &meson_rtc_nvmem_config);
   370		if (ret)
   371			goto out_disable_vdd;
   372	
   373		ret = rtc_register_device(rtc->rtc);
   374		if (ret)
   375			goto out_unregister_nvmem;
   376	
   377		return 0;
   378	
   379	out_unregister_nvmem:
   380		rtc_nvmem_unregister(rtc->rtc);
   381	
   382	out_disable_vdd:
   383		regulator_disable(rtc->vdd);
   384		return ret;
   385	}
   386	

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