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authorJim Keniston <jkenisto@us.ibm.com>2010-11-11 18:54:22 +0000
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2010-11-30 15:43:51 +1100
commit690d1a9bd14bd861328ca66473a223f60cf1ad31 (patch)
tree5193d0b167e2251817d0bf3a4339087f09dda779 /arch
parent9a866b870880065364c894823257e6982103d4e4 (diff)
downloadop-kernel-dev-690d1a9bd14bd861328ca66473a223f60cf1ad31.zip
op-kernel-dev-690d1a9bd14bd861328ca66473a223f60cf1ad31.tar.gz
powerpc/nvram: Fix NVRAM partition list setup
Simplify creation and use of the NVRAM partition list. Signed-off-by: Jim Keniston <jkenisto@us.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch')
-rw-r--r--arch/powerpc/kernel/nvram_64.c26
1 files changed, 8 insertions, 18 deletions
diff --git a/arch/powerpc/kernel/nvram_64.c b/arch/powerpc/kernel/nvram_64.c
index 125d86c..b8a50fa 100644
--- a/arch/powerpc/kernel/nvram_64.c
+++ b/arch/powerpc/kernel/nvram_64.c
@@ -51,7 +51,7 @@ struct nvram_partition {
unsigned int index;
};
-static struct nvram_partition * nvram_part;
+static LIST_HEAD(nvram_partitions);
static loff_t dev_nvram_llseek(struct file *file, loff_t offset, int origin)
{
@@ -196,13 +196,11 @@ static struct miscdevice nvram_dev = {
#ifdef DEBUG_NVRAM
static void __init nvram_print_partitions(char * label)
{
- struct list_head * p;
struct nvram_partition * tmp_part;
printk(KERN_WARNING "--------%s---------\n", label);
printk(KERN_WARNING "indx\t\tsig\tchks\tlen\tname\n");
- list_for_each(p, &nvram_part->partition) {
- tmp_part = list_entry(p, struct nvram_partition, partition);
+ list_for_each_entry(tmp_part, &nvram_partitions, partition) {
printk(KERN_WARNING "%4d \t%02x\t%02x\t%d\t%s\n",
tmp_part->index, tmp_part->header.signature,
tmp_part->header.checksum, tmp_part->header.length,
@@ -250,7 +248,7 @@ int __init nvram_remove_partition(const char *name, int sig)
struct nvram_partition *part, *prev, *tmp;
int rc;
- list_for_each_entry(part, &nvram_part->partition, partition) {
+ list_for_each_entry(part, &nvram_partitions, partition) {
if (part->header.signature != sig)
continue;
if (name && strncmp(name, part->header.name, 12))
@@ -269,7 +267,7 @@ int __init nvram_remove_partition(const char *name, int sig)
/* Merge contiguous ones */
prev = NULL;
- list_for_each_entry_safe(part, tmp, &nvram_part->partition, partition) {
+ list_for_each_entry_safe(part, tmp, &nvram_partitions, partition) {
if (part->header.signature != NVRAM_SIG_FREE) {
prev = NULL;
continue;
@@ -333,7 +331,7 @@ loff_t __init nvram_create_partition(const char *name, int sig,
/* Find a free partition that will give us the maximum needed size
If can't find one that will give us the minimum size needed */
- list_for_each_entry(part, &nvram_part->partition, partition) {
+ list_for_each_entry(part, &nvram_partitions, partition) {
if (part->header.signature != NVRAM_SIG_FREE)
continue;
@@ -412,7 +410,7 @@ int nvram_get_partition_size(loff_t data_index)
{
struct nvram_partition *part;
- list_for_each_entry(part, &nvram_part->partition, partition) {
+ list_for_each_entry(part, &nvram_partitions, partition) {
if (part->index + NVRAM_HEADER_LEN == data_index)
return (part->header.length - 1) * NVRAM_BLOCK_LEN;
}
@@ -430,7 +428,7 @@ loff_t nvram_find_partition(const char *name, int sig, int *out_size)
{
struct nvram_partition *p;
- list_for_each_entry(p, &nvram_part->partition, partition) {
+ list_for_each_entry(p, &nvram_partitions, partition) {
if (p->header.signature == sig &&
(!name || !strncmp(p->header.name, name, 12))) {
if (out_size)
@@ -452,14 +450,6 @@ int __init nvram_scan_partitions(void)
int total_size;
int err;
- /* Initialize our anchor for the nvram partition list */
- nvram_part = kmalloc(sizeof(struct nvram_partition), GFP_KERNEL);
- if (!nvram_part) {
- printk(KERN_ERR "nvram_init: Failed kmalloc\n");
- return -ENOMEM;
- }
- INIT_LIST_HEAD(&nvram_part->partition);
-
if (ppc_md.nvram_size == NULL || ppc_md.nvram_size() <= 0)
return -ENODEV;
total_size = ppc_md.nvram_size();
@@ -507,7 +497,7 @@ int __init nvram_scan_partitions(void)
memcpy(&tmp_part->header, &phead, NVRAM_HEADER_LEN);
tmp_part->index = cur_index;
- list_add_tail(&tmp_part->partition, &nvram_part->partition);
+ list_add_tail(&tmp_part->partition, &nvram_partitions);
cur_index += phead.length * NVRAM_BLOCK_LEN;
}
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