Dear Simon Glass, In message <BANLkTin6o4OEp7aBfCsxpt=z5oztoxv...@mail.gmail.com> you wrote: > > I believe the problem here is the read/modify/write behaviour which is not > well-defined in C. One ends up using volatile to ensure the right behaviour, > and then this doesn't necessarily work either. Where one write must happen
volatile does not help anything here. You MUST always make sure to use proper I/O accessors. Even in ARM code this has become mandatory by now, even if older ARM cores and compilers have been forgiving enough for a long time. > Perhaps in newer compilers bitfield semantics have been improved? Bitfields have always been a mess, and should be avoided like hell. Best regards, Wolfgang Denk -- DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: w...@denx.de There are three things I always forget. Names, faces - the third I can't remember. - Italo Svevo _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
