As reported by Frans Pop the new global macro W on ARM which is included
via
|arch/arm/include/asm/uaccess.h:20
|include/linux/uaccess.h:5
|include/linux/crypto.h:26
|crypto/cast6.c:23

leads to a build error because the crypto/cast6.c defines a function
which is named W.

Reported-by: Frans Pop <elen...@planet.nl>
Signed-off-by: Sebastian Andrzej Siewior <sebast...@breakpoint.cc>
---
* Frans Pop | 2009-09-16 16:01:34 [+0200]:

>Maybe it's a result of enabling the new config option CRYPTO_DEV_MV_CESA?
please don't blame my shiny new driver :)

Catalin: bisect leads to 8b592783a. I've renamed the macro in this
commit and everything else I found due to compile error. Hope the new
name is acceptable. I think W in global name space is a bad thing to do.
In crypto there are many one letter identifier.
Since you use this in assembly code only you might want to move it to
another header file which does get included from every .c file.

 arch/arm/boot/compressed/head.S |   96 +++++++++++++++++++-------------------
 arch/arm/include/asm/unified.h  |    4 +-
 arch/arm/kernel/entry-armv.S    |   50 ++++++++++----------
 arch/arm/lib/copy_from_user.S   |    2 +-
 arch/arm/lib/copy_template.S    |    4 +-
 arch/arm/lib/copy_to_user.S     |    2 +-
 arch/arm/lib/memcpy.S           |    4 +-
 arch/arm/lib/memmove.S          |   28 ++++++------
 8 files changed, 95 insertions(+), 95 deletions(-)

diff --git a/arch/arm/boot/compressed/head.S b/arch/arm/boot/compressed/head.S
index fa6fbf4..6939dd0 100644
--- a/arch/arm/boot/compressed/head.S
+++ b/arch/arm/boot/compressed/head.S
@@ -612,8 +612,8 @@ call_cache_fn:      adr     r12, proc_types
 proc_types:
                .word   0x41560600              @ ARM6/610
                .word   0xffffffe0
-               W(b)    __arm6_mmu_cache_off    @ works, but slow
-               W(b)    __arm6_mmu_cache_off
+               WORD_ACCESS(b)  __arm6_mmu_cache_off    @ works, but slow
+               WORD_ACCESS(b)  __arm6_mmu_cache_off
                mov     pc, lr
  THUMB(                nop                             )
 @              b       __arm6_mmu_cache_on             @ untested
@@ -631,29 +631,29 @@ proc_types:
 
                .word   0x41007000              @ ARM7/710
                .word   0xfff8fe00
-               W(b)    __arm7_mmu_cache_off
-               W(b)    __arm7_mmu_cache_off
+               WORD_ACCESS(b)  __arm7_mmu_cache_off
+               WORD_ACCESS(b)  __arm7_mmu_cache_off
                mov     pc, lr
  THUMB(                nop                             )
 
                .word   0x41807200              @ ARM720T (writethrough)
                .word   0xffffff00
-               W(b)    __armv4_mmu_cache_on
-               W(b)    __armv4_mmu_cache_off
+               WORD_ACCESS(b)  __armv4_mmu_cache_on
+               WORD_ACCESS(b)  __armv4_mmu_cache_off
                mov     pc, lr
  THUMB(                nop                             )
 
                .word   0x41007400              @ ARM74x
                .word   0xff00ff00
-               W(b)    __armv3_mpu_cache_on
-               W(b)    __armv3_mpu_cache_off
-               W(b)    __armv3_mpu_cache_flush
+               WORD_ACCESS(b)  __armv3_mpu_cache_on
+               WORD_ACCESS(b)  __armv3_mpu_cache_off
+               WORD_ACCESS(b)  __armv3_mpu_cache_flush
                
                .word   0x41009400              @ ARM94x
                .word   0xff00ff00
-               W(b)    __armv4_mpu_cache_on
-               W(b)    __armv4_mpu_cache_off
-               W(b)    __armv4_mpu_cache_flush
+               WORD_ACCESS(b)  __armv4_mpu_cache_on
+               WORD_ACCESS(b)  __armv4_mpu_cache_off
+               WORD_ACCESS(b)  __armv4_mpu_cache_flush
 
                .word   0x00007000              @ ARM7 IDs
                .word   0x0000f000
@@ -668,39 +668,39 @@ proc_types:
 
                .word   0x4401a100              @ sa110 / sa1100
                .word   0xffffffe0
-               W(b)    __armv4_mmu_cache_on
-               W(b)    __armv4_mmu_cache_off
-               W(b)    __armv4_mmu_cache_flush
+               WORD_ACCESS(b)  __armv4_mmu_cache_on
+               WORD_ACCESS(b)  __armv4_mmu_cache_off
+               WORD_ACCESS(b)  __armv4_mmu_cache_flush
 
                .word   0x6901b110              @ sa1110
                .word   0xfffffff0
-               W(b)    __armv4_mmu_cache_on
-               W(b)    __armv4_mmu_cache_off
-               W(b)    __armv4_mmu_cache_flush
+               WORD_ACCESS(b)  __armv4_mmu_cache_on
+               WORD_ACCESS(b)  __armv4_mmu_cache_off
+               WORD_ACCESS(b)  __armv4_mmu_cache_flush
 
                .word   0x56056930
                .word   0xff0ffff0              @ PXA935
-               W(b)    __armv4_mmu_cache_on
-               W(b)    __armv4_mmu_cache_off
-               W(b)    __armv4_mmu_cache_flush
+               WORD_ACCESS(b)  __armv4_mmu_cache_on
+               WORD_ACCESS(b)  __armv4_mmu_cache_off
+               WORD_ACCESS(b)  __armv4_mmu_cache_flush
 
                .word   0x56158000              @ PXA168
                .word   0xfffff000
-               W(b)    __armv4_mmu_cache_on
-               W(b)    __armv4_mmu_cache_off
-               W(b)    __armv5tej_mmu_cache_flush
+               WORD_ACCESS(b)  __armv4_mmu_cache_on
+               WORD_ACCESS(b)  __armv4_mmu_cache_off
+               WORD_ACCESS(b)  __armv5tej_mmu_cache_flush
 
                .word   0x56056930
                .word   0xff0ffff0              @ PXA935
-               W(b)    __armv4_mmu_cache_on
-               W(b)    __armv4_mmu_cache_off
-               W(b)    __armv4_mmu_cache_flush
+               WORD_ACCESS(b)  __armv4_mmu_cache_on
+               WORD_ACCESS(b)  __armv4_mmu_cache_off
+               WORD_ACCESS(b)  __armv4_mmu_cache_flush
 
                .word   0x56050000              @ Feroceon
                .word   0xff0f0000
-               W(b)    __armv4_mmu_cache_on
-               W(b)    __armv4_mmu_cache_off
-               W(b)    __armv5tej_mmu_cache_flush
+               WORD_ACCESS(b)  __armv4_mmu_cache_on
+               WORD_ACCESS(b)  __armv4_mmu_cache_off
+               WORD_ACCESS(b)  __armv5tej_mmu_cache_flush
 
 #ifdef CONFIG_CPU_FEROCEON_OLD_ID
                /* this conflicts with the standard ARMv5TE entry */
@@ -713,41 +713,41 @@ proc_types:
 
                .word   0x66015261              @ FA526
                .word   0xff01fff1
-               W(b)    __fa526_cache_on
-               W(b)    __armv4_mmu_cache_off
-               W(b)    __fa526_cache_flush
+               WORD_ACCESS(b)  __fa526_cache_on
+               WORD_ACCESS(b)  __armv4_mmu_cache_off
+               WORD_ACCESS(b)  __fa526_cache_flush
 
                @ These match on the architecture ID
 
                .word   0x00020000              @ ARMv4T
                .word   0x000f0000
-               W(b)    __armv4_mmu_cache_on
-               W(b)    __armv4_mmu_cache_off
-               W(b)    __armv4_mmu_cache_flush
+               WORD_ACCESS(b)  __armv4_mmu_cache_on
+               WORD_ACCESS(b)  __armv4_mmu_cache_off
+               WORD_ACCESS(b)  __armv4_mmu_cache_flush
 
                .word   0x00050000              @ ARMv5TE
                .word   0x000f0000
-               W(b)    __armv4_mmu_cache_on
-               W(b)    __armv4_mmu_cache_off
-               W(b)    __armv4_mmu_cache_flush
+               WORD_ACCESS(b)  __armv4_mmu_cache_on
+               WORD_ACCESS(b)  __armv4_mmu_cache_off
+               WORD_ACCESS(b)  __armv4_mmu_cache_flush
 
                .word   0x00060000              @ ARMv5TEJ
                .word   0x000f0000
-               W(b)    __armv4_mmu_cache_on
-               W(b)    __armv4_mmu_cache_off
-               W(b)    __armv4_mmu_cache_flush
+               WORD_ACCESS(b)  __armv4_mmu_cache_on
+               WORD_ACCESS(b)  __armv4_mmu_cache_off
+               WORD_ACCESS(b)  __armv4_mmu_cache_flush
 
                .word   0x0007b000              @ ARMv6
                .word   0x000ff000
-               W(b)    __armv4_mmu_cache_on
-               W(b)    __armv4_mmu_cache_off
-               W(b)    __armv6_mmu_cache_flush
+               WORD_ACCESS(b)  __armv4_mmu_cache_on
+               WORD_ACCESS(b)  __armv4_mmu_cache_off
+               WORD_ACCESS(b)  __armv6_mmu_cache_flush
 
                .word   0x000f0000              @ new CPU Id
                .word   0x000f0000
-               W(b)    __armv7_mmu_cache_on
-               W(b)    __armv7_mmu_cache_off
-               W(b)    __armv7_mmu_cache_flush
+               WORD_ACCESS(b)  __armv7_mmu_cache_on
+               WORD_ACCESS(b)  __armv7_mmu_cache_off
+               WORD_ACCESS(b)  __armv7_mmu_cache_flush
 
                .word   0                       @ unrecognised type
                .word   0
diff --git a/arch/arm/include/asm/unified.h b/arch/arm/include/asm/unified.h
index 073e85b..0dd685a 100644
--- a/arch/arm/include/asm/unified.h
+++ b/arch/arm/include/asm/unified.h
@@ -35,7 +35,7 @@
 
 #define ARM(x...)
 #define THUMB(x...)    x
-#define W(instr)       instr.w
+#define WORD_ACCESS(instr)     instr.w
 #define BSYM(sym)      sym + 1
 
 #else  /* !CONFIG_THUMB2_KERNEL */
@@ -45,7 +45,7 @@
 
 #define ARM(x...)      x
 #define THUMB(x...)
-#define W(instr)       instr
+#define WORD_ACCESS(instr)     instr
 #define BSYM(sym)      sym
 
 #endif /* CONFIG_THUMB2_KERNEL */
diff --git a/arch/arm/kernel/entry-armv.S b/arch/arm/kernel/entry-armv.S
index 3d727a8..564789a 100644
--- a/arch/arm/kernel/entry-armv.S
+++ b/arch/arm/kernel/entry-armv.S
@@ -606,33 +606,33 @@ call_fpe:
  THUMB(        add     pc, r8                  )
        nop
 
-       W(mov)  pc, lr                          @ CP#0
-       W(b)    do_fpe                          @ CP#1 (FPE)
-       W(b)    do_fpe                          @ CP#2 (FPE)
-       W(mov)  pc, lr                          @ CP#3
+       WORD_ACCESS(mov)        pc, lr                  @ CP#0
+       WORD_ACCESS(b)  do_fpe                          @ CP#1 (FPE)
+       WORD_ACCESS(b)  do_fpe                          @ CP#2 (FPE)
+       WORD_ACCESS(mov)        pc, lr                  @ CP#3
 #ifdef CONFIG_CRUNCH
        b       crunch_task_enable              @ CP#4 (MaverickCrunch)
        b       crunch_task_enable              @ CP#5 (MaverickCrunch)
        b       crunch_task_enable              @ CP#6 (MaverickCrunch)
 #else
-       W(mov)  pc, lr                          @ CP#4
-       W(mov)  pc, lr                          @ CP#5
-       W(mov)  pc, lr                          @ CP#6
+       WORD_ACCESS(mov)        pc, lr                  @ CP#4
+       WORD_ACCESS(mov)        pc, lr                  @ CP#5
+       WORD_ACCESS(mov)        pc, lr                  @ CP#6
 #endif
-       W(mov)  pc, lr                          @ CP#7
-       W(mov)  pc, lr                          @ CP#8
-       W(mov)  pc, lr                          @ CP#9
+       WORD_ACCESS(mov)        pc, lr                  @ CP#7
+       WORD_ACCESS(mov)        pc, lr                  @ CP#8
+       WORD_ACCESS(mov)        pc, lr                  @ CP#9
 #ifdef CONFIG_VFP
-       W(b)    do_vfp                          @ CP#10 (VFP)
-       W(b)    do_vfp                          @ CP#11 (VFP)
+       WORD_ACCESS(b)  do_vfp                          @ CP#10 (VFP)
+       WORD_ACCESS(b)  do_vfp                          @ CP#11 (VFP)
 #else
-       W(mov)  pc, lr                          @ CP#10 (VFP)
-       W(mov)  pc, lr                          @ CP#11 (VFP)
+       WORD_ACCESS(mov)        pc, lr                  @ CP#10 (VFP)
+       WORD_ACCESS(mov)        pc, lr                  @ CP#11 (VFP)
 #endif
-       W(mov)  pc, lr                          @ CP#12
-       W(mov)  pc, lr                          @ CP#13
-       W(mov)  pc, lr                          @ CP#14 (Debug)
-       W(mov)  pc, lr                          @ CP#15 (Control)
+       WORD_ACCESS(mov)        pc, lr                  @ CP#12
+       WORD_ACCESS(mov)        pc, lr                  @ CP#13
+       WORD_ACCESS(mov)        pc, lr                  @ CP#14 (Debug)
+       WORD_ACCESS(mov)        pc, lr                  @ CP#15 (Control)
 
 #ifdef CONFIG_NEON
        .align  6
@@ -1236,13 +1236,13 @@ __vectors_start:
  ARM(  swi     SYS_ERROR0      )
  THUMB(        svc     #0              )
  THUMB(        nop                     )
-       W(b)    vector_und + stubs_offset
-       W(ldr)  pc, .LCvswi + stubs_offset
-       W(b)    vector_pabt + stubs_offset
-       W(b)    vector_dabt + stubs_offset
-       W(b)    vector_addrexcptn + stubs_offset
-       W(b)    vector_irq + stubs_offset
-       W(b)    vector_fiq + stubs_offset
+       WORD_ACCESS(b)  vector_und + stubs_offset
+       WORD_ACCESS(ldr)        pc, .LCvswi + stubs_offset
+       WORD_ACCESS(b)  vector_pabt + stubs_offset
+       WORD_ACCESS(b)  vector_dabt + stubs_offset
+       WORD_ACCESS(b)  vector_addrexcptn + stubs_offset
+       WORD_ACCESS(b)  vector_irq + stubs_offset
+       WORD_ACCESS(b)  vector_fiq + stubs_offset
 
        .globl  __vectors_end
 __vectors_end:
diff --git a/arch/arm/lib/copy_from_user.S b/arch/arm/lib/copy_from_user.S
index e4fe124..ea25eb7 100644
--- a/arch/arm/lib/copy_from_user.S
+++ b/arch/arm/lib/copy_from_user.S
@@ -61,7 +61,7 @@
        .endm
 
        .macro str1w ptr reg abort
-       W(str) \reg, [\ptr], #4
+       WORD_ACCESS(str) \reg, [\ptr], #4
        .endm
 
        .macro str8w ptr reg1 reg2 reg3 reg4 reg5 reg6 reg7 reg8 abort
diff --git a/arch/arm/lib/copy_template.S b/arch/arm/lib/copy_template.S
index 805e3f8..8619346 100644
--- a/arch/arm/lib/copy_template.S
+++ b/arch/arm/lib/copy_template.S
@@ -113,7 +113,7 @@
                b       7f
 6:
                .rept   (1 << LDR1W_SHIFT)
-               W(nop)
+               WORD_ACCESS(nop)
                .endr
                ldr1w   r1, r3, abort=20f
                ldr1w   r1, r4, abort=20f
@@ -131,7 +131,7 @@
                add     pc, pc, ip
                nop
                .rept   (1 << STR1W_SHIFT)
-               W(nop)
+               WORD_ACCESS(nop)
                .endr
                str1w   r0, r3, abort=20f
                str1w   r0, r4, abort=20f
diff --git a/arch/arm/lib/copy_to_user.S b/arch/arm/lib/copy_to_user.S
index 1a71e15..8e7b756 100644
--- a/arch/arm/lib/copy_to_user.S
+++ b/arch/arm/lib/copy_to_user.S
@@ -41,7 +41,7 @@
 #endif
 
        .macro ldr1w ptr reg abort
-       W(ldr) \reg, [\ptr], #4
+       WORD_ACCESS(ldr) \reg, [\ptr], #4
        .endm
 
        .macro ldr4w ptr reg1 reg2 reg3 reg4 abort
diff --git a/arch/arm/lib/memcpy.S b/arch/arm/lib/memcpy.S
index a9b9e22..28aa074 100644
--- a/arch/arm/lib/memcpy.S
+++ b/arch/arm/lib/memcpy.S
@@ -17,7 +17,7 @@
 #define STR1W_SHIFT    0
 
        .macro ldr1w ptr reg abort
-       W(ldr) \reg, [\ptr], #4
+       WORD_ACCESS(ldr) \reg, [\ptr], #4
        .endm
 
        .macro ldr4w ptr reg1 reg2 reg3 reg4 abort
@@ -33,7 +33,7 @@
        .endm
 
        .macro str1w ptr reg abort
-       W(str) \reg, [\ptr], #4
+       WORD_ACCESS(str) \reg, [\ptr], #4
        .endm
 
        .macro str8w ptr reg1 reg2 reg3 reg4 reg5 reg6 reg7 reg8 abort
diff --git a/arch/arm/lib/memmove.S b/arch/arm/lib/memmove.S
index 5025c86..08a6210 100644
--- a/arch/arm/lib/memmove.S
+++ b/arch/arm/lib/memmove.S
@@ -75,24 +75,24 @@ ENTRY(memmove)
                addne   pc, pc, ip              @ C is always clear here
                b       7f
 6:             nop
-               W(ldr)  r3, [r1, #-4]!
-               W(ldr)  r4, [r1, #-4]!
-               W(ldr)  r5, [r1, #-4]!
-               W(ldr)  r6, [r1, #-4]!
-               W(ldr)  r7, [r1, #-4]!
-               W(ldr)  r8, [r1, #-4]!
-               W(ldr)  lr, [r1, #-4]!
+               WORD_ACCESS(ldr)        r3, [r1, #-4]!
+               WORD_ACCESS(ldr)        r4, [r1, #-4]!
+               WORD_ACCESS(ldr)        r5, [r1, #-4]!
+               WORD_ACCESS(ldr)        r6, [r1, #-4]!
+               WORD_ACCESS(ldr)        r7, [r1, #-4]!
+               WORD_ACCESS(ldr)        r8, [r1, #-4]!
+               WORD_ACCESS(ldr)        lr, [r1, #-4]!
 
                add     pc, pc, ip
                nop
                nop
-               W(str)  r3, [r0, #-4]!
-               W(str)  r4, [r0, #-4]!
-               W(str)  r5, [r0, #-4]!
-               W(str)  r6, [r0, #-4]!
-               W(str)  r7, [r0, #-4]!
-               W(str)  r8, [r0, #-4]!
-               W(str)  lr, [r0, #-4]!
+               WORD_ACCESS(str)        r3, [r0, #-4]!
+               WORD_ACCESS(str)        r4, [r0, #-4]!
+               WORD_ACCESS(str)        r5, [r0, #-4]!
+               WORD_ACCESS(str)        r6, [r0, #-4]!
+               WORD_ACCESS(str)        r7, [r0, #-4]!
+               WORD_ACCESS(str)        r8, [r0, #-4]!
+               WORD_ACCESS(str)        lr, [r0, #-4]!
 
        CALGN(  bcs     2b                      )
 
-- 
1.6.4.GIT

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