md/async: don't pass a memory pointer as a page pointer.

[pandora-kernel.git] / crypto / async_tx / async_raid6_recov.c

diff --git a/crypto/async_tx/async_raid6_recov.c b/crypto/async_tx/async_raid6_recov.c
index 6d73dde..8e30b6e 100644 (file)
--- a/crypto/async_tx/async_raid6_recov.c
+++ b/crypto/async_tx/async_raid6_recov.c
@@ -263,10 +263,10 @@ __2data_recov_n(int disks, size_t bytes, int faila, int failb,
         * delta p and delta q
         */
        dp = blocks[faila];
-       blocks[faila] = (void *)raid6_empty_zero_page;
+       blocks[faila] = NULL;
        blocks[disks-2] = dp;
        dq = blocks[failb];
-       blocks[failb] = (void *)raid6_empty_zero_page;
+       blocks[failb] = NULL;
        blocks[disks-1] = dq;
 
        init_async_submit(submit, ASYNC_TX_FENCE, tx, NULL, NULL, scribble);
@@ -338,7 +338,10 @@ async_raid6_2data_recov(int disks, size_t bytes, int faila, int failb,
 
                async_tx_quiesce(&submit->depend_tx);
                for (i = 0; i < disks; i++)
-                       ptrs[i] = page_address(blocks[i]);
+                       if (blocks[i] == NULL)
+                               ptrs[i] = (void*)raid6_empty_zero_page;
+                       else
+                               ptrs[i] = page_address(blocks[i]);
 
                raid6_2data_recov(disks, bytes, faila, failb, ptrs);
 
@@ -398,7 +401,10 @@ async_raid6_datap_recov(int disks, size_t bytes, int faila,
 
                async_tx_quiesce(&submit->depend_tx);
                for (i = 0; i < disks; i++)
-                       ptrs[i] = page_address(blocks[i]);
+                       if (blocks[i] == NULL)
+                               ptrs[i] = (void*)raid6_empty_zero_page;
+                       else
+                               ptrs[i] = page_address(blocks[i]);
 
                raid6_datap_recov(disks, bytes, faila, ptrs);
 
@@ -414,7 +420,7 @@ async_raid6_datap_recov(int disks, size_t bytes, int faila,
         * Use the dead data page as temporary storage for delta q
         */
        dq = blocks[faila];
-       blocks[faila] = (void *)raid6_empty_zero_page;
+       blocks[faila] = NULL;
        blocks[disks-1] = dq;
 
        /* in the 4 disk case we only need to perform a single source