[PATCH] edac_mc: fix kfree calls in the error path

[Fengguang Wu]

We need to free up memory in this order: 

  free csrows[i]->channels[j]
  free csrows[i]->channels
  free csrows[i]
  free csrows

Signed-off-by: Fengguang Wu <fengguang...@intel.com>
---
 drivers/edac/edac_mc.c |   12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)

--- linux.orig/drivers/edac/edac_mc.c   2012-08-10 17:16:14.444794060 +0800
+++ linux/drivers/edac/edac_mc.c        2012-08-10 17:16:19.048794169 +0800
@@ -419,14 +419,16 @@ error:
                kfree(mci->dimms);
        }
        if (mci->csrows) {
-               for (chn = 0; chn < tot_channels; chn++) {
-                       csr = mci->csrows[chn];
+               for (row = 0; row < tot_csrows; row++) {
+                       csr = mci->csrows[row];
                        if (csr) {
-                               for (chn = 0; chn < tot_channels; chn++)
-                                       kfree(csr->channels[chn]);
+                               if (csr->channels) {
+                                       for (chn = 0; chn < tot_channels; chn++)
+                                               kfree(csr->channels[chn]);
+                                       kfree(csr->channels);
+                               }
                                kfree(csr);
                        }
-                       kfree(mci->csrows[i]);
                }
                kfree(mci->csrows);
        }
--
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