Re: [PATCH] drivers/net/wireless/ath/wil6210: Makefile, only -Werror when no -W* in EXTRA_CFLAGS

Re: [PATCH] drivers/net/wireless/ath/wil6210: Makefile, only -Werror when no -W* in EXTRA_CFLAGS

[Chen Gang]

于 2013年02月27日 16:45, Vladimir Kondratiev 写道:
> On Wednesday, February 27, 2013 02:55:06 PM Chen Gang wrote:
>>
>>   When make with EXTRA_CFLAGS=-W, it will report error.
>>   so give a check in Makefile.
>>
>> Signed-off-by: Chen Gang <gang.chen@asianux.com>
>> ---
>>  drivers/net/wireless/ath/wil6210/Makefile |    4 +++-
>>  1 files changed, 3 insertions(+), 1 deletions(-)
>>
>> diff --git a/drivers/net/wireless/ath/wil6210/Makefile b/drivers/net/wireless/ath/wil6210/Makefile
>> index 9396dc9..d288eea 100644
>> --- a/drivers/net/wireless/ath/wil6210/Makefile
>> +++ b/drivers/net/wireless/ath/wil6210/Makefile
>> @@ -9,5 +9,7 @@ wil6210-objs += wmi.o
>>  wil6210-objs += interrupt.o
>>  wil6210-objs += txrx.o
>>  
>> -subdir-ccflags-y += -Werror
>> +ifeq (, $(findstring -W,$(EXTRA_CFLAGS)))
>> +	subdir-ccflags-y += -Werror
>> +endif
>>  subdir-ccflags-y += -D__CHECK_ENDIAN__
>>
> Acked-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
> 
> Well, agree; -W triggers lots of warnings, I suspect all other places that use
> -Werror should be problematic. Worth fixing all others? Quick look for v3.8 raises:
> 

  thank you for your suggestion.
  after this patch applied, I will do for others (let you as signed-of-by, too).

  :-)


> linux$ find . -name Makefile | xargs grep -e -Werror
> ./arch/sh/lib/Makefile:ccflags-y := -Werror
> ./arch/sh/kernel/Makefile:ccflags-y := -Werror
> ./arch/sh/mm/Makefile:ccflags-y := -Werror
> ./arch/sh/cchips/hd6446x/Makefile:ccflags-y := -Werror
> ./arch/sparc/prom/Makefile:ccflags := -Werror
> ./arch/sparc/lib/Makefile:ccflags-y := -Werror
> ./arch/sparc/kernel/Makefile:ccflags-y := -Werror
> ./arch/sparc/mm/Makefile:ccflags-y := -Werror
> ./arch/alpha/lib/Makefile:ccflags-y := -Werror
> ./arch/alpha/oprofile/Makefile:ccflags-y := -Werror -Wno-sign-compare
> ./arch/alpha/mm/Makefile:ccflags-y := -Werror
> ./arch/powerpc/kvm/Makefile:subdir-ccflags-$(CONFIG_PPC_WERROR) := -Werror
> ./arch/powerpc/lib/Makefile:subdir-ccflags-$(CONFIG_PPC_WERROR) := -Werror
> ./arch/powerpc/kernel/Makefile:subdir-ccflags-$(CONFIG_PPC_WERROR) := -Werror
> ./arch/powerpc/oprofile/Makefile:subdir-ccflags-$(CONFIG_PPC_WERROR) := -Werror
> ./arch/powerpc/xmon/Makefile:subdir-ccflags-$(CONFIG_PPC_WERROR) := -Werror
> ./arch/powerpc/mm/Makefile:subdir-ccflags-$(CONFIG_PPC_WERROR) := -Werror
> ./arch/powerpc/sysdev/Makefile:subdir-ccflags-$(CONFIG_PPC_WERROR) := -Werror
> ./arch/powerpc/sysdev/Makefile:subdir-ccflags-$(CONFIG_PPC_WERROR) := -Werror
> ./arch/powerpc/sysdev/xics/Makefile:subdir-ccflags-$(CONFIG_PPC_WERROR) := -Werror
> ./arch/powerpc/platforms/Makefile:subdir-ccflags-$(CONFIG_PPC_WERROR) := -Werror
> ./arch/powerpc/perf/Makefile:subdir-ccflags-$(CONFIG_PPC_WERROR) := -Werror
> ./Makefile:                -Werror-implicit-function-declaration \
> ./tools/perf/Makefile:  CFLAGS_WERROR := -Werror
> ./tools/perf/Makefile:ifeq ($(call try-cc,$(SOURCE_HELLO),$(CFLAGS) -Werror -fstack-protector-all,-fstack-protector-all),y)
> ./tools/perf/Makefile:ifeq ($(call try-cc,$(SOURCE_HELLO),$(CFLAGS) -Werror -Wstack-protector,-Wstack-protector),y)
> ./tools/perf/Makefile:ifeq ($(call try-cc,$(SOURCE_HELLO),$(CFLAGS) -Werror -Wvolatile-register-var,-Wvolatile-register-var),y)
> ./drivers/scsi/lpfc/Makefile:ccflags-y += -Werror
> ./drivers/scsi/aic7xxx/Makefile:ccflags-y += -Werror
> ./drivers/staging/omapdrm/Makefile:ccflags-y := -Iinclude/drm -Werror
> ./drivers/net/wireless/ath/wil6210/Makefile:subdir-ccflags-y += -Werror
> 
> 
> 


-- 
Chen Gang

Asianux Corporation

Re: [PATCH] drivers/net/wireless/ath/wil6210: Makefile, only -Werror when no -W* in EXTRA_CFLAGS

[Vladimir Kondratiev]

On Wednesday, February 27, 2013 04:56:57 PM Chen Gang wrote:
> 于 2013年02月27日 16:45, Vladimir Kondratiev 写道:
> > On Wednesday, February 27, 2013 02:55:06 PM Chen Gang wrote:
> >>
> >>   When make with EXTRA_CFLAGS=-W, it will report error.
> >>   so give a check in Makefile.
> >>
> >> Signed-off-by: Chen Gang <gang.chen@asianux.com>
> >> ---
> >>  drivers/net/wireless/ath/wil6210/Makefile |    4 +++-
> >>  1 files changed, 3 insertions(+), 1 deletions(-)
> >>
> >> diff --git a/drivers/net/wireless/ath/wil6210/Makefile b/drivers/net/wireless/ath/wil6210/Makefile
> >> index 9396dc9..d288eea 100644
> >> --- a/drivers/net/wireless/ath/wil6210/Makefile
> >> +++ b/drivers/net/wireless/ath/wil6210/Makefile
> >> @@ -9,5 +9,7 @@ wil6210-objs += wmi.o
> >>  wil6210-objs += interrupt.o
> >>  wil6210-objs += txrx.o
> >>  
> >> -subdir-ccflags-y += -Werror
> >> +ifeq (, $(findstring -W,$(EXTRA_CFLAGS)))
> >> +	subdir-ccflags-y += -Werror
> >> +endif
> >>  subdir-ccflags-y += -D__CHECK_ENDIAN__
> >>
> > Acked-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
> > 
> > Well, agree; -W triggers lots of warnings, I suspect all other places that use
> > -Werror should be problematic. Worth fixing all others? Quick look for v3.8 raises:
> > 
> 
>   thank you for your suggestion.
>   after this patch applied, I will do for others (let you as signed-of-by, too).

Perhaps, it would be good idea to fight the original problem.

I mean, fix warnings where possible. Example: there are lots of
"unused parameter" ones. Where it is false warning, add __maybe_unused
attribute. Like this:

diff --git a/include/linux/kernel.h b/include/linux/kernel.h
index c566927..83e43b7 100644
--- a/include/linux/kernel.h
+++ b/include/linux/kernel.h
@@ -163,8 +163,9 @@ extern int _cond_resched(void);
 # define might_sleep() \
        do { __might_sleep(__FILE__, __LINE__, 0); might_resched(); } while (0)
 #else
-  static inline void __might_sleep(const char *file, int line,
-                                  int preempt_offset) { }
+  static inline void __might_sleep(const char *file __maybe_unused,
+                                  int line __maybe_unused,
+                                  int preempt_offset __maybe_unused) { }
 # define might_sleep() do { might_resched(); } while (0)
 #endif
 

Re: [PATCH] drivers/net/wireless/ath/wil6210: Makefile, only -Werror when no -W* in EXTRA_CFLAGS

[Chen Gang]

于 2013年02月27日 17:46, Vladimir Kondratiev 写道:
> Perhaps, it would be good idea to fight the original problem.
> 

  if my another 'beautify code' patches are applied into next-* tree.
    (that means most of members think it is a good idea).
    I will process the original problems (when processing, also cc to you).

  :-)

> I mean, fix warnings where possible. Example: there are lots of
> "unused parameter" ones. Where it is false warning, add __maybe_unused
> attribute. Like this:
> 
> diff --git a/include/linux/kernel.h b/include/linux/kernel.h
> index c566927..83e43b7 100644
> --- a/include/linux/kernel.h
> +++ b/include/linux/kernel.h
> @@ -163,8 +163,9 @@ extern int _cond_resched(void);
>  # define might_sleep() \
>         do { __might_sleep(__FILE__, __LINE__, 0); might_resched(); } while (0)
>  #else
> -  static inline void __might_sleep(const char *file, int line,
> -                                  int preempt_offset) { }
> +  static inline void __might_sleep(const char *file __maybe_unused,
> +                                  int line __maybe_unused,
> +                                  int preempt_offset __maybe_unused) { }
>  # define might_sleep() do { might_resched(); } while (0)
>  #endif
>  

  thank you for your demo, it is valuable to me.

  :-)


-- 
Chen Gang

Asianux Corporation