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Subjectdrivers/regulator/lp872x.c:773: undefined reference to `devm_gpio_request_one'
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: 1001354ca34179f3db924eb66672442a173147dc
commit: 2527ecc9195e9c66252af24c4689e8a67cd4ccb9 gpio: Fix OF build problem on UM
date: 8 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 `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':
>> drivers/leds/leds-gpio.c:101: undefined reference to `devm_gpio_request_one'
drivers/built-in.o: In function `gpio_led_probe':
>> drivers/leds/leds-gpio.c:172: undefined reference to `devm_get_gpiod_from_child'
drivers/built-in.o: In function `lp55xx_init_device':
>> drivers/leds/leds-lp55xx-common.c:402: undefined reference to `devm_gpio_request_one'
drivers/built-in.o: In function `lp8860_probe':
>> drivers/leds/leds-lp8860.c:383: undefined reference to `devm_gpiod_get_optional'
drivers/built-in.o: In function `lt3593_led_probe':

vim +773 drivers/regulator/lp872x.c

b158fba6 Kim, Milo 2012-09-05 757 return lp872x_update_bits(lp, LP872X_GENERAL_CFG, mask[lp->chipid],
b158fba6 Kim, Milo 2012-09-05 758 default_dvs_mode[lp->chipid]);
af8b5fc3 Kim, Milo 2012-06-19 759 }
af8b5fc3 Kim, Milo 2012-06-19 760
7e6213f4 Paul Kocialkowski 2016-02-05 761 static int lp872x_hw_enable(struct lp872x *lp)
7e6213f4 Paul Kocialkowski 2016-02-05 762 {
7e6213f4 Paul Kocialkowski 2016-02-05 763 int ret, gpio;
7e6213f4 Paul Kocialkowski 2016-02-05 764
7e6213f4 Paul Kocialkowski 2016-02-05 765 if (!lp->pdata)
7e6213f4 Paul Kocialkowski 2016-02-05 766 return -EINVAL;
7e6213f4 Paul Kocialkowski 2016-02-05 767
7e6213f4 Paul Kocialkowski 2016-02-05 768 gpio = lp->pdata->enable_gpio;
7e6213f4 Paul Kocialkowski 2016-02-05 769 if (!gpio_is_valid(gpio))
7e6213f4 Paul Kocialkowski 2016-02-05 770 return 0;
7e6213f4 Paul Kocialkowski 2016-02-05 771
7e6213f4 Paul Kocialkowski 2016-02-05 772 /* Always set enable GPIO high. */
7e6213f4 Paul Kocialkowski 2016-02-05 @773 ret = devm_gpio_request_one(lp->dev, gpio, GPIOF_OUT_INIT_HIGH, "LP872X EN");
7e6213f4 Paul Kocialkowski 2016-02-05 774 if (ret) {
7e6213f4 Paul Kocialkowski 2016-02-05 775 dev_err(lp->dev, "gpio request err: %d\n", ret);
7e6213f4 Paul Kocialkowski 2016-02-05 776 return ret;
7e6213f4 Paul Kocialkowski 2016-02-05 777 }
7e6213f4 Paul Kocialkowski 2016-02-05 778
7e6213f4 Paul Kocialkowski 2016-02-05 779 /* Each chip has a different enable delay. */
7e6213f4 Paul Kocialkowski 2016-02-05 780 if (lp->chipid == LP8720)
7e6213f4 Paul Kocialkowski 2016-02-05 781 usleep_range(LP8720_ENABLE_DELAY, 1.5 * LP8720_ENABLE_DELAY);

:::::: The code at line 773 was first introduced by commit
:::::: 7e6213f4345c3798b7fb7af41d221e2fd77ec6a6 regulator: lp872x: Add enable GPIO pin support

:::::: TO: Paul Kocialkowski <contact@paulk.fr>
:::::: CC: Mark Brown <broonie@kernel.org>

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