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Diffstat (limited to 'arch/powerpc/mm/drmem.c')
-rw-r--r--arch/powerpc/mm/drmem.c14
1 files changed, 11 insertions, 3 deletions
diff --git a/arch/powerpc/mm/drmem.c b/arch/powerpc/mm/drmem.c
index 1604110c4238..3f1803672c9b 100644
--- a/arch/powerpc/mm/drmem.c
+++ b/arch/powerpc/mm/drmem.c
@@ -98,7 +98,7 @@ static void init_drconf_v2_cell(struct of_drconf_cell_v2 *dr_cell,
dr_cell->base_addr = cpu_to_be64(lmb->base_addr);
dr_cell->drc_index = cpu_to_be32(lmb->drc_index);
dr_cell->aa_index = cpu_to_be32(lmb->aa_index);
- dr_cell->flags = cpu_to_be32(lmb->flags);
+ dr_cell->flags = cpu_to_be32(drmem_lmb_flags(lmb));
}
static int drmem_update_dt_v2(struct device_node *memory,
@@ -121,7 +121,7 @@ static int drmem_update_dt_v2(struct device_node *memory,
}
if (prev_lmb->aa_index != lmb->aa_index ||
- prev_lmb->flags != lmb->flags)
+ drmem_lmb_flags(prev_lmb) != drmem_lmb_flags(lmb))
lmb_sets++;
prev_lmb = lmb;
@@ -150,7 +150,7 @@ static int drmem_update_dt_v2(struct device_node *memory,
}
if (prev_lmb->aa_index != lmb->aa_index ||
- prev_lmb->flags != lmb->flags) {
+ drmem_lmb_flags(prev_lmb) != drmem_lmb_flags(lmb)) {
/* end of one set, start of another */
dr_cell->seq_lmbs = cpu_to_be32(seq_lmbs);
dr_cell++;
@@ -216,6 +216,8 @@ static void __init __walk_drmem_v1_lmbs(const __be32 *prop, const __be32 *usm,
u32 i, n_lmbs;
n_lmbs = of_read_number(prop++, 1);
+ if (n_lmbs == 0)
+ return;
for (i = 0; i < n_lmbs; i++) {
read_drconf_v1_cell(&lmb, &prop);
@@ -245,6 +247,8 @@ static void __init __walk_drmem_v2_lmbs(const __be32 *prop, const __be32 *usm,
u32 i, j, lmb_sets;
lmb_sets = of_read_number(prop++, 1);
+ if (lmb_sets == 0)
+ return;
for (i = 0; i < lmb_sets; i++) {
read_drconf_v2_cell(&dr_cell, &prop);
@@ -354,6 +358,8 @@ static void __init init_drmem_v1_lmbs(const __be32 *prop)
struct drmem_lmb *lmb;
drmem_info->n_lmbs = of_read_number(prop++, 1);
+ if (drmem_info->n_lmbs == 0)
+ return;
drmem_info->lmbs = kcalloc(drmem_info->n_lmbs, sizeof(*lmb),
GFP_KERNEL);
@@ -373,6 +379,8 @@ static void __init init_drmem_v2_lmbs(const __be32 *prop)
int lmb_index;
lmb_sets = of_read_number(prop++, 1);
+ if (lmb_sets == 0)
+ return;
/* first pass, calculate the number of LMBs */
p = prop;