powerpc/nvram: Completely clear a new partition

When creating a partition, we clear it entirely rather than
just the first two words since the previous code was rather
specific to the pseries log partition format.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

diff --git a/arch/powerpc/kernel/nvram_64.c b/arch/powerpc/kernel/nvram_64.c
index f7538820c03d1595a342f7e30bc65c43c21de3c5..02737e6875596b99aa6138f350574f6218d7f2cf 100644 (file)
--- a/arch/powerpc/kernel/nvram_64.c
+++ b/arch/powerpc/kernel/nvram_64.c
@@ -320,7 +320,7 @@ static int __init nvram_create_partition(const char *name, int sig,
        struct nvram_partition *part;
        struct nvram_partition *new_part;
        struct nvram_partition *free_part = NULL;
-       int seq_init[2] = { 0, 0 };
+       static char nv_init_vals[16];
        loff_t tmp_index;
        long size = 0;
        int rc;
@@ -379,14 +379,15 @@ static int __init nvram_create_partition(const char *name, int sig,
                return rc;
        }
 
-       /* make sure and initialize to zero the sequence number and the error
-          type logged */
-       tmp_index = new_part->index + NVRAM_HEADER_LEN;
-       rc = ppc_md.nvram_write((char *)&seq_init, sizeof(seq_init), &tmp_index);
-       if (rc <= 0) {
-               printk(KERN_ERR "nvram_create_os_partition: nvram_write "
-                      "failed (%d)\n", rc);
-               return rc;
+       /* Clear the partition */
+       for (tmp_index = new_part->index + NVRAM_HEADER_LEN;
+            tmp_index <  ((size - 1) * NVRAM_BLOCK_LEN);
+            tmp_index += NVRAM_BLOCK_LEN) {
+               rc = ppc_md.nvram_write(nv_init_vals, NVRAM_BLOCK_LEN, &tmp_index);
+               if (rc <= 0) {
+                       pr_err("nvram_create_partition: nvram_write failed (%d)\n", rc);
+                       return rc;
+               }
        }
        
        nvram_error_log_index = new_part->index + NVRAM_HEADER_LEN;