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Subject: Re: [PATCH 3/3 v2] sh: fix READ/WRITE redefinition warnings
To:     John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>,
        linux-kernel@vger.kernel.org
Cc:     Yoshinori Sato <ysato@users.sourceforge.jp>,
        Rich Felker <dalias@libc.org>, linux-sh@vger.kernel.org,
        Geert Uytterhoeven <geert+renesas@glider.be>,
        Takashi YOSHII <takasi-y@ops.dti.ne.jp>
References: <20210627220544.8757-1-rdunlap@infradead.org>
 <20210627220544.8757-4-rdunlap@infradead.org>
 <6af41806-e715-4084-418f-4a8924d26c07@physik.fu-berlin.de>
From:   Randy Dunlap <rdunlap@infradead.org>
Message-ID: <8efd6e1d-9949-9598-9e6b-41d9b2f4ea7a@infradead.org>
Date:   Wed, 30 Jun 2021 12:33:23 -0700
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On 6/30/21 2:36 AM, John Paul Adrian Glaubitz wrote:
> On 6/28/21 12:05 AM, Randy Dunlap wrote:
>> kernel.h defines READ and WRITE, so rename the SH math-emu macros
>> to MREAD and MWRITE.
>>
>> Fixes these warnings:
>>
>> ../arch/sh/math-emu/math.c:54: warning: "WRITE" redefined
>>    54 | #define WRITE(d,a) ({if(put_user(d, (typeof (d) __user *)a)) return -EFAULT;})
>> In file included from ../arch/sh/math-emu/math.c:10:
>> ../include/linux/kernel.h:37: note: this is the location of the previous definition
>>    37 | #define WRITE   1
>> ../arch/sh/math-emu/math.c:55: warning: "READ" redefined
>>    55 | #define READ(d,a) ({if(get_user(d, (typeof (d) __user *)a)) return -EFAULT;})
>> In file included from ../arch/sh/math-emu/math.c:10:
>> ../include/linux/kernel.h:36: note: this is the location of the previous definition
>>    36 | #define READ   0
>>
>> Fixes: 4b565680d163 ("sh: math-emu support")
>> Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
>> Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
>> Cc: Rich Felker <dalias@libc.org>
>> Cc: linux-sh@vger.kernel.org
>> Cc: Takashi YOSHII <takasi-y@ops.dti.ne.jp>
>> Cc: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
>> Cc: Geert Uytterhoeven <geert+renesas@glider.be>
>> ---
>> v2: renumber patches, otherwise no change;
>>
>>  arch/sh/math-emu/math.c |   44 +++++++++++++++++++-------------------
>>  1 file changed, 22 insertions(+), 22 deletions(-)
>>
>> --- linux-next-20210625.orig/arch/sh/math-emu/math.c
>> +++ linux-next-20210625/arch/sh/math-emu/math.c
>> @@ -51,8 +51,8 @@
>>  #define Rn	(regs->regs[n])
>>  #define Rm	(regs->regs[m])
>>  
>> -#define WRITE(d,a)	({if(put_user(d, (typeof (d) __user *)a)) return -EFAULT;})
>> -#define READ(d,a)	({if(get_user(d, (typeof (d) __user *)a)) return -EFAULT;})
>> +#define MWRITE(d,a)	({if(put_user(d, (typeof (d) __user *)a)) return -EFAULT;})
>> +#define MREAD(d,a)	({if(get_user(d, (typeof (d) __user *)a)) return -EFAULT;})
>>  
>>  #define PACK_S(r,f)	FP_PACK_SP(&r,f)
>>  #define UNPACK_S(f,r)	FP_UNPACK_SP(f,&r)
>> @@ -157,11 +157,11 @@ fmov_idx_reg(struct sh_fpu_soft_struct *
>>  {
>>  	if (FPSCR_SZ) {
>>  		FMOV_EXT(n);
>> -		READ(FRn, Rm + R0 + 4);
>> +		MREAD(FRn, Rm + R0 + 4);
>>  		n++;
>> -		READ(FRn, Rm + R0);
>> +		MREAD(FRn, Rm + R0);
>>  	} else {
>> -		READ(FRn, Rm + R0);
>> +		MREAD(FRn, Rm + R0);
>>  	}
>>  
>>  	return 0;
>> @@ -173,11 +173,11 @@ fmov_mem_reg(struct sh_fpu_soft_struct *
>>  {
>>  	if (FPSCR_SZ) {
>>  		FMOV_EXT(n);
>> -		READ(FRn, Rm + 4);
>> +		MREAD(FRn, Rm + 4);
>>  		n++;
>> -		READ(FRn, Rm);
>> +		MREAD(FRn, Rm);
>>  	} else {
>> -		READ(FRn, Rm);
>> +		MREAD(FRn, Rm);
>>  	}
>>  
>>  	return 0;
>> @@ -189,12 +189,12 @@ fmov_inc_reg(struct sh_fpu_soft_struct *
>>  {
>>  	if (FPSCR_SZ) {
>>  		FMOV_EXT(n);
>> -		READ(FRn, Rm + 4);
>> +		MREAD(FRn, Rm + 4);
>>  		n++;
>> -		READ(FRn, Rm);
>> +		MREAD(FRn, Rm);
>>  		Rm += 8;
>>  	} else {
>> -		READ(FRn, Rm);
>> +		MREAD(FRn, Rm);
>>  		Rm += 4;
>>  	}
>>  
>> @@ -207,11 +207,11 @@ fmov_reg_idx(struct sh_fpu_soft_struct *
>>  {
>>  	if (FPSCR_SZ) {
>>  		FMOV_EXT(m);
>> -		WRITE(FRm, Rn + R0 + 4);
>> +		MWRITE(FRm, Rn + R0 + 4);
>>  		m++;
>> -		WRITE(FRm, Rn + R0);
>> +		MWRITE(FRm, Rn + R0);
>>  	} else {
>> -		WRITE(FRm, Rn + R0);
>> +		MWRITE(FRm, Rn + R0);
>>  	}
>>  
>>  	return 0;
>> @@ -223,11 +223,11 @@ fmov_reg_mem(struct sh_fpu_soft_struct *
>>  {
>>  	if (FPSCR_SZ) {
>>  		FMOV_EXT(m);
>> -		WRITE(FRm, Rn + 4);
>> +		MWRITE(FRm, Rn + 4);
>>  		m++;
>> -		WRITE(FRm, Rn);
>> +		MWRITE(FRm, Rn);
>>  	} else {
>> -		WRITE(FRm, Rn);
>> +		MWRITE(FRm, Rn);
>>  	}
>>  
>>  	return 0;
>> @@ -240,12 +240,12 @@ fmov_reg_dec(struct sh_fpu_soft_struct *
>>  	if (FPSCR_SZ) {
>>  		FMOV_EXT(m);
>>  		Rn -= 8;
>> -		WRITE(FRm, Rn + 4);
>> +		MWRITE(FRm, Rn + 4);
>>  		m++;
>> -		WRITE(FRm, Rn);
>> +		MWRITE(FRm, Rn);
>>  	} else {
>>  		Rn -= 4;
>> -		WRITE(FRm, Rn);
>> +		MWRITE(FRm, Rn);
>>  	}
>>  
>>  	return 0;
>> @@ -445,11 +445,11 @@ id_sys(struct sh_fpu_soft_struct *fregs,
>>  	case 0x4052:
>>  	case 0x4062:
>>  		Rn -= 4;
>> -		WRITE(*reg, Rn);
>> +		MWRITE(*reg, Rn);
>>  		break;
>>  	case 0x4056:
>>  	case 0x4066:
>> -		READ(*reg, Rn);
>> +		MREAD(*reg, Rn);
>>  		Rn += 4;
>>  		break;
>>  	default:
>>
> 
> This one no longer applies to Linus' tree:
> 
> glaubitz@node54:/data/home/glaubitz/linux> git am ../sh-patches-2021/\[PATCH\ 3_3\ v2\]\ sh\:\ fix\ READ_WRITE\ redefinition\ warnings.eml
> Applying: sh: fix READ/WRITE redefinition warnings
> error: patch failed: arch/sh/math-emu/math.c:51
> error: arch/sh/math-emu/math.c: patch does not apply
> Patch failed at 0001 sh: fix READ/WRITE redefinition warnings
> hint: Use 'git am --show-current-patch=diff' to see the failed patch
> When you have resolved this problem, run "git am --continue".
> If you prefer to skip this patch, run "git am --skip" instead.
> To restore the original branch and stop patching, run "git am --abort".
> glaubitz@node54:/data/home/glaubitz/linux>

OK. Thanks for all of the testing.

-- 
~Randy