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Date:   Sat, 24 Sep 2016 10:06:33 +0800
From:   kbuild test robot <fengguang.wu@...el.com>
To:     Linus Walleij <linus.walleij@...aro.org>
Cc:     kbuild-all@...org, linux-kernel@...r.kernel.org
Subject: drivers/gpio/gpiolib.c:3215: undefined reference to
 `of_get_named_gpiod_flags'

Hi Linus,

It's probably a bug fix that unveils the link errors.

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   78bbf153fa96e5e40234b7b05567602535645460
commit: 2527ecc9195e9c66252af24c4689e8a67cd4ccb9 gpio: Fix OF build problem on UM
date:   5 weeks ago
config: um-allyesconfig (attached as .config)
compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901
reproduce:
        git checkout 2527ecc9195e9c66252af24c4689e8a67cd4ccb9
        # save the attached .config to linux build tree
        make ARCH=um 

All errors (new ones prefixed by >>):

   arch/um/drivers/built-in.o: In function `vde_open_real':
   (.text+0xc7d1): warning: Using 'getgrnam' in statically linked applications requires at runtime the shared libraries from the glibc version used for linking
   arch/um/drivers/built-in.o: In function `vde_open_real':
   (.text+0xc61c): warning: Using 'getpwuid' in statically linked applications requires at runtime the shared libraries from the glibc version used for linking
   arch/um/drivers/built-in.o: In function `vde_open_real':
   (.text+0xc935): warning: Using 'getaddrinfo' in statically linked applications requires at runtime the shared libraries from the glibc version used for linking
   arch/um/drivers/built-in.o: In function `pcap_nametoaddr':
   (.text+0x1d3c5): warning: Using 'gethostbyname' in statically linked applications requires at runtime the shared libraries from the glibc version used for linking
   arch/um/drivers/built-in.o: In function `pcap_nametonetaddr':
   (.text+0x1d465): warning: Using 'getnetbyname' in statically linked applications requires at runtime the shared libraries from the glibc version used for linking
   arch/um/drivers/built-in.o: In function `pcap_nametoproto':
   (.text+0x1d685): warning: Using 'getprotobyname' in statically linked applications requires at runtime the shared libraries from the glibc version used for linking
   arch/um/drivers/built-in.o: In function `pcap_nametoport':
   (.text+0x1d4b7): warning: Using 'getservbyname' in statically linked applications requires at runtime the shared libraries from the glibc version used for linking
   drivers/built-in.o: In function `fwnode_get_named_gpiod':
>> drivers/gpio/gpiolib.c:3215: undefined reference to `of_get_named_gpiod_flags'
   drivers/built-in.o: In function `gpiod_get_index':
   drivers/gpio/gpiolib.c:3140: undefined reference to `of_get_named_gpiod_flags'
   drivers/built-in.o: In function `bgpio_map':
>> drivers/gpio/gpio-mmio.c:571: undefined reference to `devm_ioremap_resource'
   drivers/built-in.o: In function `dwapb_gpio_probe':
>> drivers/gpio/gpio-dwapb.c:554: undefined reference to `devm_ioremap_resource'
   drivers/built-in.o: In function `zx_gpio_probe':
>> drivers/gpio/gpio-zx.c:229: undefined reference to `devm_ioremap_resource'
   drivers/built-in.o: In function `lp872x_probe':
>> drivers/regulator/lp872x.c:773: undefined reference to `devm_gpio_request_one'
   drivers/regulator/lp872x.c:746: undefined reference to `devm_gpio_request_one'
   drivers/built-in.o: In function `max8952_pmic_probe':
>> drivers/regulator/max8952.c:249: undefined reference to `devm_gpio_request_one'
   drivers/built-in.o: In function `max8973_probe':
>> drivers/regulator/max8973-regulator.c:715: undefined reference to `devm_gpio_request_one'
   drivers/regulator/max8973-regulator.c:770: undefined reference to `devm_gpio_request_one'
   drivers/built-in.o: In function `pwm_regulator_probe':
>> drivers/regulator/pwm-regulator.c:387: undefined reference to `devm_gpiod_get_optional'
   drivers/built-in.o: In function `tps62360_probe':
>> drivers/regulator/tps62360-regulator.c:433: undefined reference to `devm_gpio_request_one'
   drivers/regulator/tps62360-regulator.c:444: undefined reference to `devm_gpio_request_one'
   drivers/built-in.o: In function `fdp_nci_i2c_probe':
>> drivers/nfc/fdp/i2c.c:326: undefined reference to `devm_gpiod_get'
   drivers/built-in.o: In function `nfcmrvl_nci_unregister_dev':
>> drivers/nfc/nfcmrvl/main.c:198: undefined reference to `devm_gpio_free'
   drivers/built-in.o: In function `nfcmrvl_nci_register_dev':
>> drivers/nfc/nfcmrvl/main.c:127: undefined reference to `devm_gpio_request_one'
   drivers/built-in.o: In function `st21nfca_hci_i2c_probe':
>> drivers/nfc/st21nfca/i2c.c:597: undefined reference to `devm_gpio_request_one'
   drivers/built-in.o: In function `st_nci_i2c_probe':
>> drivers/nfc/st-nci/i2c.c:300: undefined reference to `devm_gpio_request_one'
   drivers/built-in.o: In function `nxp_nci_i2c_probe':
>> drivers/nfc/nxp-nci/i2c.c:361: undefined reference to `devm_gpio_request_one'
   drivers/built-in.o: In function `mdio_gpio_probe':
>> drivers/net/phy/mdio-gpio.c:177: undefined reference to `devm_gpio_request'
   drivers/built-in.o: In function `at803x_probe':
>> drivers/net/phy/at803x.c:283: undefined reference to `devm_gpiod_get_optional'
   drivers/built-in.o: In function `mv88e6xxx_probe':
>> drivers/net/dsa/mv88e6xxx/chip.c:4022: undefined reference to `devm_gpiod_get_optional'
   drivers/built-in.o: In function `pps_gpio_probe':
>> drivers/pps/clients/pps-gpio.c:125: undefined reference to `devm_gpio_request'
   drivers/built-in.o: In function `max8903_probe':
   drivers/power/max8903_charger.c:248: undefined reference to `devm_gpio_request'
   drivers/power/max8903_charger.c:280: undefined reference to `devm_gpio_request'
   drivers/power/max8903_charger.c:243: undefined reference to `devm_gpio_request'
   drivers/built-in.o: In function `bq24257_probe':
   drivers/power/bq24257_charger.c:876: undefined reference to `devm_gpiod_get_optional'
   drivers/built-in.o: In function `bq24735_charger_probe':
   drivers/power/bq24735-charger.c:396: undefined reference to `devm_gpio_request'
   drivers/built-in.o: In function `bq25890_probe':
   drivers/power/bq25890_charger.c:726: undefined reference to `devm_gpiod_get_index'
   drivers/built-in.o: In function `intel_probe':
>> drivers/bluetooth/hci_intel.c:1199: undefined reference to `devm_gpiod_get'
   drivers/built-in.o: In function `create_gpio_led':

vim +3215 drivers/gpio/gpiolib.c

40b73183 Mika Westerberg    2014-10-21  3199   * In case of error an ERR_PTR() is returned.
40b73183 Mika Westerberg    2014-10-21  3200   */
40b73183 Mika Westerberg    2014-10-21  3201  struct gpio_desc *fwnode_get_named_gpiod(struct fwnode_handle *fwnode,
40b73183 Mika Westerberg    2014-10-21  3202  					 const char *propname)
40b73183 Mika Westerberg    2014-10-21  3203  {
40b73183 Mika Westerberg    2014-10-21  3204  	struct gpio_desc *desc = ERR_PTR(-ENODEV);
40b73183 Mika Westerberg    2014-10-21  3205  	bool active_low = false;
90b665f6 Laurent Pinchart   2015-10-13  3206  	bool single_ended = false;
40b73183 Mika Westerberg    2014-10-21  3207  	int ret;
40b73183 Mika Westerberg    2014-10-21  3208  
40b73183 Mika Westerberg    2014-10-21  3209  	if (!fwnode)
40b73183 Mika Westerberg    2014-10-21  3210  		return ERR_PTR(-EINVAL);
40b73183 Mika Westerberg    2014-10-21  3211  
40b73183 Mika Westerberg    2014-10-21  3212  	if (is_of_node(fwnode)) {
40b73183 Mika Westerberg    2014-10-21  3213  		enum of_gpio_flags flags;
40b73183 Mika Westerberg    2014-10-21  3214  
c181fb3e Alexander Sverdlin 2015-06-22 @3215  		desc = of_get_named_gpiod_flags(to_of_node(fwnode), propname, 0,
40b73183 Mika Westerberg    2014-10-21  3216  						&flags);
90b665f6 Laurent Pinchart   2015-10-13  3217  		if (!IS_ERR(desc)) {
40b73183 Mika Westerberg    2014-10-21  3218  			active_low = flags & OF_GPIO_ACTIVE_LOW;
90b665f6 Laurent Pinchart   2015-10-13  3219  			single_ended = flags & OF_GPIO_SINGLE_ENDED;
90b665f6 Laurent Pinchart   2015-10-13  3220  		}
40b73183 Mika Westerberg    2014-10-21  3221  	} else if (is_acpi_node(fwnode)) {
40b73183 Mika Westerberg    2014-10-21  3222  		struct acpi_gpio_info info;
40b73183 Mika Westerberg    2014-10-21  3223  

:::::: The code at line 3215 was first introduced by commit
:::::: c181fb3e723351e2f7a1f76b6c0627a4b8ad1723 ACPI / OF: Rename of_node() and acpi_node() to to_of_node() and to_acpi_node()

:::::: TO: Alexander Sverdlin <alexander.sverdlin@...il.com>
:::::: CC: Rafael J. Wysocki <rafael.j.wysocki@...el.com>

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