It looks like all users of tulip_tbl are reads, so mark this table
as read-only.
$ git grep tulip_tbl # edited to avoid line-wraps...
interrupt.c: iowrite32(tulip_tbl[tp->chip_id].valid_intrs, ...
interrupt.c: iowrite32(tulip_tbl[tp->chip_id].valid_intrs&~RxPollInt, ...
interrupt.c: iowrite32(tulip_tbl[tp->chip_id].valid_intrs, ...
interrupt.c: iowrite32(tulip_tbl[tp->chip_id].valid_intrs | TimerInt,
pnic.c: iowrite32(tulip_tbl[tp->chip_id].valid_intrs, ioaddr + CSR7);
tulip.h: extern struct tulip_chip_table tulip_tbl[];
tulip_core.c:struct tulip_chip_table tulip_tbl[] = {
tulip_core.c:iowrite32(tulip_tbl[tp->chip_id].valid_intrs, ioaddr + CSR5);
tulip_core.c:iowrite32(tulip_tbl[tp->chip_id].valid_intrs, ioaddr + CSR7);
tulip_core.c:setup_timer(&tp->timer, tulip_tbl[tp->chip_id].media_timer,
tulip_core.c:const char *chip_name = tulip_tbl[chip_idx].chip_name;
tulip_core.c:if (pci_resource_len (pdev, 0) < tulip_tbl[chip_idx].io_size)
tulip_core.c:ioaddr = pci_iomap(..., tulip_tbl[chip_idx].io_size);
tulip_core.c:tp->flags = tulip_tbl[chip_idx].flags;
tulip_core.c:setup_timer(&tp->timer, tulip_tbl[tp->chip_id].media_timer,
tulip_core.c:INIT_WORK(&tp->media_work, tulip_tbl[tp->chip_id].media_task);
Cc: "David S. Miller" <da...@davemloft.net>
Cc: Jarod Wilson <ja...@redhat.com>
Cc: "Gustavo A. R. Silva" <gust...@embeddedor.com>
Cc: netdev@vger.kernel.org
Cc: linux-par...@vger.kernel.org
Signed-off-by: Kees Cook <keesc...@chromium.org>
---
drivers/net/ethernet/dec/tulip/tulip.h | 2 +-
drivers/net/ethernet/dec/tulip/tulip_core.c | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/net/ethernet/dec/tulip/tulip.h
b/drivers/net/ethernet/dec/tulip/tulip.h
index 38431a155f09..06660dbc44b7 100644
--- a/drivers/net/ethernet/dec/tulip/tulip.h
+++ b/drivers/net/ethernet/dec/tulip/tulip.h
@@ -515,7 +515,7 @@ void comet_timer(unsigned long data);
extern int tulip_debug;
extern const char * const medianame[];
extern const char tulip_media_cap[];
-extern struct tulip_chip_table tulip_tbl[];
+extern const struct tulip_chip_table tulip_tbl[];
void oom_timer(unsigned long data);
extern u8 t21040_csr13[];
diff --git a/drivers/net/ethernet/dec/tulip/tulip_core.c
b/drivers/net/ethernet/dec/tulip/tulip_core.c
index 84394b43c0a1..851b6d1f5a42 100644
--- a/drivers/net/ethernet/dec/tulip/tulip_core.c
+++ b/drivers/net/ethernet/dec/tulip/tulip_core.c
@@ -138,7 +138,7 @@ static void tulip_timer(unsigned long data)
* It is indexed via the values in 'enum chips'
*/
-struct tulip_chip_table tulip_tbl[] = {
+const struct tulip_chip_table tulip_tbl[] = {
{ }, /* placeholder for array, slot unused currently */
{ }, /* placeholder for array, slot unused currently */
--
2.7.4
--
Kees Cook
Pixel Security
