edac: ppc mpc85xx fix mc err detect

Error found by Jeff Haran.

The error detect register is 0s when no errors are detected.  The check
code is incorrect, so reverse check sense.

Reported-by: Jeff Haran <jharan@Brocade.COM>
Signed-off-by: Dave Jiang <djiang@mvista.com>
Signed-off-by: Doug Thompson <dougthompson@xmission.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: Kumar Gala <galak@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/drivers/edac/mpc85xx_edac.c b/drivers/edac/mpc85xx_edac.c
index 4637a4a757df65f29144d13b60d82f4dea3671c8..7c8c2d72916f60f0ade44a323a7f01cc644e0d21 100644 (file)
--- a/drivers/edac/mpc85xx_edac.c
+++ b/drivers/edac/mpc85xx_edac.c
@@ -674,7 +674,7 @@ static void mpc85xx_mc_check(struct mem_ctl_info *mci)
        int row_index;
 
        err_detect = in_be32(pdata->mc_vbase + MPC85XX_MC_ERR_DETECT);
-       if (err_detect)
+       if (!err_detect)
                return;
 
        mpc85xx_mc_printk(mci, KERN_ERR, "Err Detect Register: %#8.8x\n",