tree d82908a5559e0fc899234220fb4a441bdb103055
parent b113a3f7e85d7f97c8383a88a5bc7c2ea8daeb2f
author Jason Uhlenkott <juhlenko@akamai.com> 1184835016 -0700
committer Linus Torvalds <torvalds@woody.linux-foundation.org> 1184864695 -0700

drivers/edac: mod race fix i82875p

If ERRSTS indicates that there's no error then we don't need to bother reading
the other registers.

In addition to making the common case faster, this actually fixes a small race
where we don't see an error but we clear the error bits anyway, potentially
wiping away info on an error that happened in the interim (or where a CE
arrives between the first and second read of ERRSTS, causing us to falsely
claim "UE overwrote CE").

Signed-off-by: Jason Uhlenkott <juhlenko@akamai.com>
Signed-off-by: Douglas Thompson <dougthompson@xmission.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>