[PATCH] memory: omap-gpmc: Fix a couple off by ones

Dan Carpenter
2020-08-25T10:47:07Z

These comparisons should be >= instead of > to prevent reading one
element beyond the end of the gpmc_cs[] array.

Fixes: cdd6928c589a ("ARM: OMAP2+: Add device-tree support for NOR flash")
Fixes: f37e4580c409 ("ARM: OMAP2: Dynamic allocator for GPMC memory space")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
---
drivers/memory/omap-gpmc.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/memory/omap-gpmc.c b/drivers/memory/omap-gpmc.c
index cd9e80748591..fd245b82163a 100644
--- a/drivers/memory/omap-gpmc.c
+++ b/drivers/memory/omap-gpmc.c
@@ -989,7 +989,7 @@ static int gpmc_cs_remap(int cs, u32 base)
int ret;
u32 old_base, size;

- if (cs > gpmc_cs_num) {
+ if (cs >= gpmc_cs_num) {
pr_err("%s: requested chip-select is disabled\n", __func__);
return -ENODEV;
}
@@ -1024,7 +1024,7 @@ int gpmc_cs_request(int cs, unsigned long size, unsigned long *base)
struct resource *res = &gpmc->mem;
int r = -1;

- if (cs > gpmc_cs_num) {
+ if (cs >= gpmc_cs_num) {
pr_err("%s: requested chip-select is disabled\n", __func__);
return -ENODEV;
}
--
2.28.0