Re: [PATCH net-next 4/4] net-next: dsa: add dsa support for Mediatek MT7530 switch

kbuild test robot
2017-03-15T02:21:56Z

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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,

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