On Sun, 2008-03-30 at 13:55 -0500, James Bottomley wrote: > > > > > > This isn't really the correct fix, is it? The driver stupidity is > > > having a global (although static) variable called err which invites > > > problems like this. How about this fix? > > > > > > > If you like that better, sure. > > Er, well it's not really a question of like; it's more a question of the > programming principle of reducing namespace pollution. > > The more global something is (and you start with global headers, then > arch headers, then globally exported symbols, then subsystem symbols, > etc ...) the more polluting. So, the only thing that should be allowed > to name something totally generic, like 'err' or 'ret' should be right > at the lowest level (i.e. unexported symbols of local functions). > > Your patch was wrong because you changed the name of the lowest level > and left the actual polluting symbol in the next level up, thus inviting > another patch or function addition to do it all over again. The correct > way to fix something like this is to rename the more globally polluting > symbol to make a clash far less likely. True, but being somewhat unfamiliar with scsi code, I chose the more localized version that was easier to verify. Are you going to apply your above version, or did you want me to redo mine that way? Harvey -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
