'struct k3_ring_ops' is not modified in this driver.
Constifying this structure moves some data to a read-only section, so
increase overall security.
On a x86_64, with allmodconfig:
Before:
======
text data bss dec hex filename
17090 3304 32 20426 4fca drivers/soc/ti/k3-ringacc.o
After:
=====
text data bss dec hex filename
17266 3144 32 20442 4fda drivers/soc/ti/k3-ringacc.o
Signed-off-by: Christophe JAILLET <christophe.jaillet@xxxxxxxxxx>
---
Compile tested-only
---
drivers/soc/ti/k3-ringacc.c | 12 ++++++------
1 file changed, 6 insertions(+), 6 deletions(-)
diff --git a/drivers/soc/ti/k3-ringacc.c b/drivers/soc/ti/k3-ringacc.c
index fd4251d75935..8c0102968351 100644
--- a/drivers/soc/ti/k3-ringacc.c
+++ b/drivers/soc/ti/k3-ringacc.c
@@ -161,7 +161,7 @@ struct k3_ring {
struct k3_ringacc_proxy_target_regs __iomem *proxy;
dma_addr_t ring_mem_dma;
void *ring_mem_virt;
- struct k3_ring_ops *ops;
+ const struct k3_ring_ops *ops;
u32 size;
enum k3_ring_size elm_size;
enum k3_ring_mode mode;
@@ -268,17 +268,17 @@ static int k3_ringacc_ring_pop_mem(struct k3_ring *ring, void *elem);
static int k3_dmaring_fwd_pop(struct k3_ring *ring, void *elem);
static int k3_dmaring_reverse_pop(struct k3_ring *ring, void *elem);
-static struct k3_ring_ops k3_ring_mode_ring_ops = {
+static const struct k3_ring_ops k3_ring_mode_ring_ops = {
.push_tail = k3_ringacc_ring_push_mem,
.pop_head = k3_ringacc_ring_pop_mem,
};
-static struct k3_ring_ops k3_dmaring_fwd_ops = {
+static const struct k3_ring_ops k3_dmaring_fwd_ops = {
.push_tail = k3_ringacc_ring_push_mem,
.pop_head = k3_dmaring_fwd_pop,
};
-static struct k3_ring_ops k3_dmaring_reverse_ops = {
+static const struct k3_ring_ops k3_dmaring_reverse_ops = {
/* Reverse side of the DMA ring can only be popped by SW */
.pop_head = k3_dmaring_reverse_pop,
};
@@ -288,7 +288,7 @@ static int k3_ringacc_ring_pop_io(struct k3_ring *ring, void *elem);
static int k3_ringacc_ring_push_head_io(struct k3_ring *ring, void *elem);
static int k3_ringacc_ring_pop_tail_io(struct k3_ring *ring, void *elem);
-static struct k3_ring_ops k3_ring_mode_msg_ops = {
+static const struct k3_ring_ops k3_ring_mode_msg_ops = {
.push_tail = k3_ringacc_ring_push_io,
.push_head = k3_ringacc_ring_push_head_io,
.pop_tail = k3_ringacc_ring_pop_tail_io,
@@ -300,7 +300,7 @@ static int k3_ringacc_ring_push_tail_proxy(struct k3_ring *ring, void *elem);
static int k3_ringacc_ring_pop_head_proxy(struct k3_ring *ring, void *elem);
static int k3_ringacc_ring_pop_tail_proxy(struct k3_ring *ring, void *elem);
-static struct k3_ring_ops k3_ring_mode_proxy_ops = {
+static const struct k3_ring_ops k3_ring_mode_proxy_ops = {
.push_tail = k3_ringacc_ring_push_tail_proxy,
.push_head = k3_ringacc_ring_push_head_proxy,
.pop_tail = k3_ringacc_ring_pop_tail_proxy,
--
2.45.2
