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authorAlexander Holler <holler@ahsoftware.de>2011-01-09 12:19:44 +0000
committerAlbert Aribaud <albert.aribaud@free.fr>2011-02-02 00:54:44 +0100
commit3c0659b535b075be124c3d2a0714e55e65c46737 (patch)
treee8d99c2dff1e0d6afdaf83b6b5301dbe47ce7e5b /arch/arm/cpu/pxa
parent3c152165c78408e44845f2d08469db887f050e43 (diff)
downloadu-boot-linaro-stable-3c0659b535b075be124c3d2a0714e55e65c46737.tar.gz
ARM: Avoid compiler optimization for readb, writeb and friends.
gcc 4.5.1 seems to ignore (at least some) volatile definitions, avoid that as done in the kernel. Reading C99 6.7.3 8 and the comment 114) there, I think it is a bug of that gcc version to ignore the volatile type qualifier used e.g. in __arch_getl(). Anyway, using a definition as in the kernel headers avoids such optimizations when gcc 4.5.1 is used. Maybe the headers as used in the current linux-kernel should be used, but to avoid large changes, I've just added a small change to the current headers. Signed-off-by: Alexander Holler <holler@ahsoftware.de> Signed-off-by: Dirk Behme <dirk.behme@googlemail.com> Signed-off-by: Wolfgang Denk <wd@denx.de> Cc: Alessandro Rubini <rubini-list@gnudd.com> Tested-by: Thomas Weber <weber@corscience.de> Acked-by: Alexander Holler <holler@ahsoftware.de> Tested-by: Alexander Holler <holler@ahsoftware.de>
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