Le 07/12/2010 18:10, Prafulla Wadaskar a écrit : >>> + val&= ~MFP_AF_MASK; >> Do we need to do this& here? For val is only 0 here... > > This can be removed.
OTOH, with the &, this line makes no assumption about val, and thus will work regardless of it. If the & is removed, and if later val is set to non-zero before reaching this instruction, it will cause a bug. IOW, the & makes the statement more resilient. Amicalement, -- Albert. _______________________________________________ U-Boot mailing list [email protected] http://lists.denx.de/mailman/listinfo/u-boot
