Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
vt_buffer.h: get rid of dead code in default scr_...() instances
Only 4 architectures define VT_BUF_HAVE_RW (alpha, mips, powerpc, sparc)
and all of them define VT_BUF_HAVE_MEM{SET,CPY,MOVE}W. In other
words, the code under #ifdef VT_BUF_HAVE_RW in default scr_mem...w()
instances won't be compiled anyway.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
authored by
Al Viro
and committed by
Arnd Bergmann
fb56007c
c0dc9214
-24
-24
include/linux/vt_buffer.h
-24
include/linux/vt_buffer.h
···
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#ifndef VT_BUF_HAVE_MEMSETW
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static inline void scr_memsetw(u16 *s, u16 c, unsigned int count)
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{
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#ifdef VT_BUF_HAVE_RW
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count /= 2;
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while (count--)
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scr_writew(c, s++);
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#else
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memset16(s, c, count / 2);
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#endif
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}
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#endif
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#ifndef VT_BUF_HAVE_MEMCPYW
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static inline void scr_memcpyw(u16 *d, const u16 *s, unsigned int count)
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{
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#ifdef VT_BUF_HAVE_RW
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count /= 2;
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while (count--)
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scr_writew(scr_readw(s++), d++);
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#else
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memcpy(d, s, count);
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#endif
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}
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#endif
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#ifndef VT_BUF_HAVE_MEMMOVEW
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static inline void scr_memmovew(u16 *d, const u16 *s, unsigned int count)
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{
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#ifdef VT_BUF_HAVE_RW
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if (d < s)
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scr_memcpyw(d, s, count);
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else {
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count /= 2;
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d += count;
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s += count;
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while (count--)
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scr_writew(scr_readw(--s), --d);
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}
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#else
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memmove(d, s, count);
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#endif
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}
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#endif
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