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>

1 files changed, 10 insertions, 9 deletions

diff --git a/arch/powerpc/kernel/nvram_64.c b/arch/powerpc/kernel/nvram_64.c
index f7538820c03..02737e68755 100644
--- 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;