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powerpc: get rid of zeroing, switch to RAW_COPY_USER

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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro
2017-03-21 16:35:08 -04:00
parent f2ed8bebee
commit 3448890c32
6 changed files with 14 additions and 138 deletions
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14
arch/powerpc/lib/copy_32.S
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@@ -477,18 +477,6 @@ _GLOBAL(__copy_tofrom_user)
bdnz 130b
/* then clear out the destination: r3 bytes starting at 4(r6) */
132: mfctr r3
srwi. r0,r3,2
li r9,0
mtctr r0
beq 113f
112: stwu r9,4(r6)
bdnz 112b
113: andi. r0,r3,3
mtctr r0
beq 120f
114: stb r9,4(r6)
addi r6,r6,1
bdnz 114b
120: blr
EX_TABLE(30b,108b)
@@ -497,7 +485,5 @@ _GLOBAL(__copy_tofrom_user)
EX_TABLE(41b,111b)
EX_TABLE(130b,132b)
EX_TABLE(131b,120b)
EX_TABLE(112b,120b)
EX_TABLE(114b,120b)
EXPORT_SYMBOL(__copy_tofrom_user)