avr32: Work around byteswap bug in gcc < 4.2
authorHaavard Skinnemoen <hskinnemoen@atmel.com>
Mon, 10 Mar 2008 11:56:12 +0000 (12:56 +0100)
committerHaavard Skinnemoen <hskinnemoen@atmel.com>
Mon, 10 Mar 2008 12:32:33 +0000 (13:32 +0100)
commitbafe68034e3ef5e9f512bd0468001caf34981c41
treeadb0234b23fa2f5fac48f704e03a09f047a43c15
parentd395991c117d43bfca97101a931a41d062a93852
avr32: Work around byteswap bug in gcc < 4.2

gcc versions earlier than 4.2 sign-extends the result of le16_to_cpu()
and friends when we implement __arch__swabX() using
__builtin_bswap_X(). Disable our arch-specific optimizations when those
gcc versions are being used.

Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
include/asm-avr32/byteorder.h