clk: mmp: Off by one in mmp_clk_add()

[ Upstream commit 2e85c57493e391b93445c1e0d530b36b95becc64 ]

The > comparison should be >= or we write one element beyond the end of
the unit->clk_table[] array.

(The unit->clk_table[] array is allocated in the mmp_clk_init() function
and it has unit->nr_clks elements).

Fixes: 4661fda10f8b ("clk: mmp: add basic support functions for DT support")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/clk/mmp/clk.c b/drivers/clk/mmp/clk.c
index ad8d483..ca7d37e 100644 (file)
--- a/drivers/clk/mmp/clk.c
+++ b/drivers/clk/mmp/clk.c
@@ -183,7 +183,7 @@ void mmp_clk_add(struct mmp_clk_unit *unit, unsigned int id,
                pr_err("CLK %d has invalid pointer %p\n", id, clk);
                return;
        }
-       if (id > unit->nr_clks) {
+       if (id >= unit->nr_clks) {
                pr_err("CLK %d is invalid\n", id);
                return;
        }