Hi Sean, [auto build test WARNING on robh/for-next] [also build test WARNING on v4.11-rc2 next-20170310] [cannot apply to net-next/master net/master] [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/sean-wang-mediatek-com/dt-bindings-net-dsa-add-Mediatek-MT7530-binding/20170315-083834 base: https://git.kernel.org/pub/scm/linux/kernel/git/robh/linux.git for-next config: x86_64-allmodconfig (attached as .config) compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901 reproduce: # save the attached .config to linux build tree make ARCH=x86_64 All warnings (new ones prefixed by >>): In file included from drivers/net/dsa/mt7530.c:25:0: drivers/net/dsa/mt7530.c: In function 'mt7530_setup': >> drivers/net/dsa/mt7530.c:699:19: warning: large integer implicitly truncated to unsigned type [-Woverflow] RESET_MCM, ~RESET_MCM); ^ include/linux/regmap.h:70:42: note: in definition of macro 'regmap_update_bits' regmap_update_bits_base(map, reg, mask, val, NULL, false, false) ^~~ drivers/net/dsa/mt7530.c: In function 'mt7530_probe': drivers/net/dsa/mt7530.c:1076:27: warning: unused variable 'mdio' [-Wunused-variable] struct device_node *dn, *mdio; ^~~~ drivers/net/dsa/mt7530.c: In function 'mt7530_remove': drivers/net/dsa/mt7530.c:1173:9: warning: 'return' with a value, in function returning void return ret; ^~~ drivers/net/dsa/mt7530.c:1153:1: note: declared here mt7530_remove(struct mdio_device *mdiodev) ^~~~~~~~~~~~~ vim +699 drivers/net/dsa/mt7530.c 683 ret = regulator_enable(priv->io_pwr); 684 if (ret < 0) { 685 dev_err(priv->dev, "Failed to enable io pwr: %d\n", 686 ret); 687 return ret; 688 } 689 690 /* Reset whole chip through gpio pin or 691 * memory-mapped registers for different 692 * type of hardware 693 */ 694 if (priv->mcm) { 695 regmap_update_bits(priv->ethsys, SYSC_REG_RSTCTRL, 696 RESET_MCM, RESET_MCM); 697 usleep_range(1000, 1100); 698 regmap_update_bits(priv->ethsys, SYSC_REG_RSTCTRL, > 699 RESET_MCM, ~RESET_MCM); 700 } else { 701 gpio_direction_output(priv->reset, 0); 702 usleep_range(1000, 1100); 703 gpio_set_value(priv->reset, 1); 704 } 705 706 /* Wait until the reset completion */ 707 ret = wait_condition_timeout(mt7530_read(priv, MT7530_HWTRAP) != 0, --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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