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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>
This commit is contained in:
Benjamin Herrenschmidt 2010-07-29 17:22:34 +10:00
parent 578914cffc
commit cef0d5ad62
1 changed files with 10 additions and 9 deletions
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19
arch/powerpc/kernel/nvram_64.c
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@ -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;