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SubjectRe: [PATCH] irqchip/stm32-exti: map direct event to irq parent
On Fri, 10 Jul 2020 10:37:47 +0100,
Alexandre Torgue <alexandre.torgue@st.com> wrote:
>
> Hi Marc,
>
> On 7/10/20 11:31 AM, Marc Zyngier wrote:
> > Alexandre,
> >
> > On Wed, 08 Jul 2020 05:57:24 +0100,
> > kernel test robot <lkp@intel.com> wrote:
> >>
> >> [1 <text/plain; us-ascii (7bit)>]
> >> Hi Alexandre,
> >>
> >> I love your patch! Perhaps something to improve:
> >>
> >> [auto build test WARNING on stm32/stm32-next]
> >> [also build test WARNING on soc/for-next v5.8-rc4 next-20200707]
> >> [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/Alexandre-Torgue/irqchip-stm32-exti-map-direct-event-to-irq-parent/20200706-161327
> >> base: https://git.kernel.org/pub/scm/linux/kernel/git/atorgue/stm32.git stm32-next
> >> config: arm-randconfig-s031-20200707 (attached as .config)
> >> compiler: arm-linux-gnueabi-gcc (GCC) 9.3.0
> >> reproduce:
> >> wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
> >> chmod +x ~/bin/make.cross
> >> # apt-get install sparse
> >> # sparse version: v0.6.2-31-gabbfd661-dirty
> >> # save the attached .config to linux build tree
> >> COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=arm
> >>
> >> If you fix the issue, kindly add following tag as appropriate
> >> Reported-by: kernel test robot <lkp@intel.com>
> >>
> >> All warnings (new ones prefixed by >>):
> >>
> >> In file included from include/linux/build_bug.h:5,
> >> from include/linux/bits.h:23,
> >> from include/linux/bitops.h:5,
> >> from drivers/irqchip/irq-stm32-exti.c:8:
> >> drivers/irqchip/irq-stm32-exti.c: In function 'stm32_exti_h_domain_alloc':
> >> drivers/irqchip/irq-stm32-exti.c:683:23: warning: comparison of unsigned expression >= 0 is always true [-Wtype-limits]
> >> 683 | if (desc->irq_parent >= 0) {
> >> | ^~
> >> include/linux/compiler.h:58:52: note: in definition of macro '__trace_if_var'
> >> 58 | #define __trace_if_var(cond) (__builtin_constant_p(cond) ? (cond) : __trace_if_value(cond))
> >> | ^~~~
> >>>> drivers/irqchip/irq-stm32-exti.c:683:2: note: in expansion of macro 'if'
> >> 683 | if (desc->irq_parent >= 0) {
> >
> > Do you plan to address this? Looks like an actual bug to me.
>
> I'll fix it in v2, I was just waiting for other comments before
> sending a v2. Do you prefer I send a v2 with this fix, and you'll do
> your review on this v2 ?

I'm certainly not going to review something that has such a glaring
issue.

M.

--
Without deviation from the norm, progress is not possible.

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