From: Dan Carpenter <dan.carpenter@xxxxxxxxxx> [ Upstream commit 4c54228ac8fd55044195825873c50a524131fa53 ] 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@xxxxxxxxxx> Acked-by: Roger Quadros <rogerq@xxxxxx> Link: https://lore.kernel.org/r/20200825104707.GB278587@mwanda Signed-off-by: Krzysztof Kozlowski <krzk@xxxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> --- 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 1c6a7c16e0c17..f5a89e78b7b2b 100644 --- a/drivers/memory/omap-gpmc.c +++ b/drivers/memory/omap-gpmc.c @@ -951,7 +951,7 @@ 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; } @@ -986,7 +986,7 @@ 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; } -- 2.25.1