Dear Dirk Behme,
In message 4D1F1841.5060508@googlemail.com you wrote:
Do you like to test the patch in the attachment? I named it 'v4'.
Please send patches inline.
After some thinking and testing, it seems to me that the volatile optimization issue this patch shall fix is only with the readx() macros. So the idea is to drop all writex() changes done in the v3 version of this patch. With dropping the writex() changes, we would drop all issues we discussed with e.g. the GCC statement-expression and the do while workaround, too.
This makes no sense. Even if we experience problems only with read*() at the moment, we should to the Rigth Thing (TM) and fix both the read*() and write*() functions.
Please have a look a the patch I just posted, http://patchwork.ozlabs.org/patch/78056/
Best regards,
Wolfgang Denk