Hi Serge, I love your patch! Perhaps something to improve: [auto build test WARNING on tip/timers/core] [also build test WARNING on abelloni/rtc-next tip/irq/core linus/master v5.7-rc6 next-20200519] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system. BTW, we also suggest to use '--base' option to specify the base tree in git format-patch, please see https://stackoverflow.com/a/37406982] url: https://github.com/0day-ci/linux/commits/Serge-Semin/clocksource-Fix-MIPS... base: https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git 4479730e9263befbb9ce9563a09563db2acb8f7c config: x86_64-allmodconfig (attached as .config) compiler: gcc-7 (Ubuntu 7.5.0-6ubuntu2) 7.5.0 reproduce: # apt-get install sparse # sparse version: v0.6.1-193-gb8fad4bc-dirty # save the attached .config to linux build tree make W=1 C=1 ARCH=x86_64 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' If you fix the issue, kindly add following tag as appropriate Reported-by: kbuild test robot <lkp(a)intel.com&gt; sparse warnings: (new ones prefixed by >>) arch/x86/kernel/apb_timer.c:187:54: sparse: sparse: incorrect type in argument 1 (different base types) @@ expected char const *name @@ got intchar const *name @@ arch/x86/kernel/apb_timer.c:187:54: sparse: expected char const *name arch/x86/kernel/apb_timer.c:187:59: sparse: sparse: incorrect type in argument 2 (different base types) @@ expected unsigned int rating @@ got d int rating @@ arch/x86/kernel/apb_timer.c:187:59: sparse: expected unsigned int rating arch/x86/kernel/apb_timer.c:187:59: sparse: got char * arch/x86/kernel/apb_timer.c:188:25: sparse: sparse: incorrect type in argument 3 (different base types) @@ expected void [noderef] <asn:2> *base @@ got > *base @@ arch/x86/kernel/apb_timer.c:188:25: sparse: expected void [noderef] <asn:2> *base arch/x86/kernel/apb_timer.c:188:25: sparse: got int arch/x86/kernel/apb_timer.c:188:63: sparse: sparse: incorrect type in argument 4 (different base types) @@ expected int irq @@ got void [noderef] <asn:int irq @@ arch/x86/kernel/apb_timer.c:188:63: sparse: expected int irq arch/x86/kernel/apb_timer.c:188:63: sparse: got void [noderef] <asn:2> * arch/x86/kernel/apb_timer.c:187:53: sparse: sparse: too many arguments for function dw_apb_clockevent_init arch/x86/kernel/apb_timer.c:187:54: sparse: sparse: non size-preserving integer to pointer cast arch/x86/kernel/apb_timer.c:187:59: sparse: sparse: non size-preserving pointer to integer cast vim +147 arch/x86/kernel/apb_timer.c bb24c4716185f6 Jacob Pan 2009-09-02 133 bb24c4716185f6 Jacob Pan 2009-09-02 134 static int __init apbt_clockevent_register(void) bb24c4716185f6 Jacob Pan 2009-09-02 135 { bb24c4716185f6 Jacob Pan 2009-09-02 136 struct sfi_timer_table_entry *mtmr; 89cbc76768c2fa Christoph Lameter 2014-08-17 137 struct apbt_dev *adev = this_cpu_ptr(&cpu_apbt_dev); bb24c4716185f6 Jacob Pan 2009-09-02 138 bb24c4716185f6 Jacob Pan 2009-09-02 139 mtmr = sfi_get_mtmr(APBT_CLOCKEVENT0_NUM); bb24c4716185f6 Jacob Pan 2009-09-02 140 if (mtmr == NULL) { bb24c4716185f6 Jacob Pan 2009-09-02 141 printk(KERN_ERR "Failed to get MTMR %d from SFI\n", bb24c4716185f6 Jacob Pan 2009-09-02 142 APBT_CLOCKEVENT0_NUM); bb24c4716185f6 Jacob Pan 2009-09-02 143 return -ENODEV; bb24c4716185f6 Jacob Pan 2009-09-02 144 } bb24c4716185f6 Jacob Pan 2009-09-02 145 3010673ef5f7be Jacob Pan 2010-03-02 146 adev->num = smp_processor_id(); 06c3df49521c1b Jamie Iles 2011-06-06 @147 adev->timer = dw_apb_clockevent_init(smp_processor_id(), "apbt0", 712b6aa8731a7e Kuppuswamy Sathyanarayanan 2013-10-17 @148 intel_mid_timer_options == INTEL_MID_TIMER_LAPIC_APBT ? 06c3df49521c1b Jamie Iles 2011-06-06 149 APBT_CLOCKEVENT_RATING - 100 : APBT_CLOCKEVENT_RATING, 06c3df49521c1b Jamie Iles 2011-06-06 @150 adev_virt_addr(adev), 0, apbt_freq); 06c3df49521c1b Jamie Iles 2011-06-06 151 /* Firmware does EOI handling for us. */ 06c3df49521c1b Jamie Iles 2011-06-06 152 adev->timer->eoi = NULL; bb24c4716185f6 Jacob Pan 2009-09-02 153 712b6aa8731a7e Kuppuswamy Sathyanarayanan 2013-10-17 154 if (intel_mid_timer_options == INTEL_MID_TIMER_LAPIC_APBT) { 06c3df49521c1b Jamie Iles 2011-06-06 155 global_clock_event = &adev->timer->ced; bb24c4716185f6 Jacob Pan 2009-09-02 156 printk(KERN_DEBUG "%s clockevent registered as global\n", bb24c4716185f6 Jacob Pan 2009-09-02 157 global_clock_event->name); bb24c4716185f6 Jacob Pan 2009-09-02 158 } bb24c4716185f6 Jacob Pan 2009-09-02 159 06c3df49521c1b Jamie Iles 2011-06-06 160 dw_apb_clockevent_register(adev->timer); bb24c4716185f6 Jacob Pan 2009-09-02 161 bb24c4716185f6 Jacob Pan 2009-09-02 162 sfi_free_mtmr(mtmr); bb24c4716185f6 Jacob Pan 2009-09-02 163 return 0; bb24c4716185f6 Jacob Pan 2009-09-02 164 } bb24c4716185f6 Jacob Pan 2009-09-02 165 bb24c4716185f6 Jacob Pan 2009-09-02 166 #ifdef CONFIG_SMP a5ef2e70405c8a Thomas Gleixner 2010-09-28 167 a5ef2e70405c8a Thomas Gleixner 2010-09-28 168 static void apbt_setup_irq(struct apbt_dev *adev) a5ef2e70405c8a Thomas Gleixner 2010-09-28 169 { a5ef2e70405c8a Thomas Gleixner 2010-09-28 170 irq_modify_status(adev->irq, 0, IRQ_MOVE_PCNTXT); e4d2ebcab11b30 Feng Tang 2010-12-03 171 irq_set_affinity(adev->irq, cpumask_of(adev->cpu)); a5ef2e70405c8a Thomas Gleixner 2010-09-28 172 } a5ef2e70405c8a Thomas Gleixner 2010-09-28 173 bb24c4716185f6 Jacob Pan 2009-09-02 174 /* Should be called with per cpu */ bb24c4716185f6 Jacob Pan 2009-09-02 175 void apbt_setup_secondary_clock(void) bb24c4716185f6 Jacob Pan 2009-09-02 176 { bb24c4716185f6 Jacob Pan 2009-09-02 177 struct apbt_dev *adev; bb24c4716185f6 Jacob Pan 2009-09-02 178 int cpu; bb24c4716185f6 Jacob Pan 2009-09-02 179 bb24c4716185f6 Jacob Pan 2009-09-02 180 /* Don't register boot CPU clockevent */ bb24c4716185f6 Jacob Pan 2009-09-02 181 cpu = smp_processor_id(); f6e9456c9272bb Robert Richter 2010-07-21 182 if (!cpu) bb24c4716185f6 Jacob Pan 2009-09-02 183 return; bb24c4716185f6 Jacob Pan 2009-09-02 184 89cbc76768c2fa Christoph Lameter 2014-08-17 185 adev = this_cpu_ptr(&cpu_apbt_dev); 06c3df49521c1b Jamie Iles 2011-06-06 186 if (!adev->timer) { 06c3df49521c1b Jamie Iles 2011-06-06 @187 adev->timer = dw_apb_clockevent_init(cpu, adev->name, 06c3df49521c1b Jamie Iles 2011-06-06 188 APBT_CLOCKEVENT_RATING, adev_virt_addr(adev), 06c3df49521c1b Jamie Iles 2011-06-06 189 adev->irq, apbt_freq); 06c3df49521c1b Jamie Iles 2011-06-06 190 adev->timer->eoi = NULL; 06c3df49521c1b Jamie Iles 2011-06-06 191 } else { 06c3df49521c1b Jamie Iles 2011-06-06 192 dw_apb_clockevent_resume(adev->timer); 06c3df49521c1b Jamie Iles 2011-06-06 193 } bb24c4716185f6 Jacob Pan 2009-09-02 194 06c3df49521c1b Jamie Iles 2011-06-06 195 printk(KERN_INFO "Registering CPU %d clockevent device %s, cpu %08x\n", 06c3df49521c1b Jamie Iles 2011-06-06 196 cpu, adev->name, adev->cpu); bb24c4716185f6 Jacob Pan 2009-09-02 197 bb24c4716185f6 Jacob Pan 2009-09-02 198 apbt_setup_irq(adev); 06c3df49521c1b Jamie Iles 2011-06-06 199 dw_apb_clockevent_register(adev->timer); bb24c4716185f6 Jacob Pan 2009-09-02 200 bb24c4716185f6 Jacob Pan 2009-09-02 201 return; bb24c4716185f6 Jacob Pan 2009-09-02 202 } bb24c4716185f6 Jacob Pan 2009-09-02 203 :::::: The code at line 147 was first introduced by commit :::::: 06c3df49521c1b112b777cc4946e5de057c814ba clocksource: apb: Share APB timer code with other platforms :::::: TO: Jamie Iles <jamie(a)jamieiles.com&gt; :::::: CC: John Stultz <john.stultz(a)linaro.org&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org