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    SubjectRe: [PATCH v2 1/3] clk: JZ4780: Add functions for enable and disable USB PHY.
    Hi "周琰杰,

    Thank you for the patch! Yet something to improve:

    [auto build test ERROR on clk/clk-next]
    [also build test ERROR on linux/master linus/master v5.8-rc3 next-20200629]
    [If your patch is applied to the wrong git tree, kindly drop us a note.
    And when submitting patch, we suggest to use as documented in
    https://git-scm.com/docs/git-format-patch]

    url: https://github.com/0day-ci/linux/commits/Zhou-Yanjie/Add-functions-to-operate-USB-PHY-related-clock/20200629-011858
    base: https://git.kernel.org/pub/scm/linux/kernel/git/clk/linux.git clk-next
    config: alpha-allyesconfig (attached as .config)
    compiler: alpha-linux-gcc (GCC) 9.3.0
    reproduce (this is a W=1 build):
    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
    COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=alpha

    If you fix the issue, kindly add following tag as appropriate
    Reported-by: kernel test robot <lkp@intel.com>

    All error/warnings (new ones prefixed by >>):

    In file included from arch/alpha/include/asm/bug.h:23,
    from include/linux/bug.h:5,
    from include/linux/thread_info.h:12,
    from include/asm-generic/current.h:5,
    from ./arch/alpha/include/generated/asm/current.h:1,
    from include/linux/mutex.h:14,
    from include/linux/kernfs.h:12,
    from include/linux/sysfs.h:16,
    from include/linux/kobject.h:20,
    from include/linux/of.h:17,
    from include/linux/clk-provider.h:9,
    from drivers/clk/ingenic/jz4780-cgu.c:10:
    drivers/clk/ingenic/jz4780-cgu.c: In function 'jz4780_otg_phy_recalc_rate':
    >> include/asm-generic/bug.h:127:34: error: expected expression before ')' token
    127 | int __ret_warn_on = !!(condition); \
    | ^
    >> drivers/clk/ingenic/jz4780-cgu.c:129:2: note: in expansion of macro 'WARN'
    129 | WARN();
    | ^~~~
    include/asm-generic/bug.h:88:51: error: expected expression before ')' token
    88 | warn_slowpath_fmt(__FILE__, __LINE__, taint, arg); \
    | ^
    include/asm-generic/bug.h:129:3: note: in expansion of macro '__WARN_printf'
    129 | __WARN_printf(TAINT_WARN, format); \
    | ^~~~~~~~~~~~~
    >> drivers/clk/ingenic/jz4780-cgu.c:129:2: note: in expansion of macro 'WARN'
    129 | WARN();
    | ^~~~

    vim +/WARN +129 drivers/clk/ingenic/jz4780-cgu.c

    105
    106 static unsigned long jz4780_otg_phy_recalc_rate(struct clk_hw *hw,
    107 unsigned long parent_rate)
    108 {
    109 u32 usbpcr1;
    110 unsigned refclk_div;
    111
    112 usbpcr1 = readl(cgu->base + CGU_REG_USBPCR1);
    113 refclk_div = usbpcr1 & USBPCR1_REFCLKDIV_MASK;
    114
    115 switch (refclk_div) {
    116 case USBPCR1_REFCLKDIV_12:
    117 return 12000000;
    118
    119 case USBPCR1_REFCLKDIV_24:
    120 return 24000000;
    121
    122 case USBPCR1_REFCLKDIV_48:
    123 return 48000000;
    124
    125 case USBPCR1_REFCLKDIV_19_2:
    126 return 19200000;
    127 }
    128
    > 129 WARN();
    130 return parent_rate;
    131 }
    132

    ---
    0-DAY CI Kernel Test Service, Intel Corporation
    https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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