Add handlers to check if a valid clock id is used to request clock
by any driver using clk_request/clk_free API calls.
Signed-off-by: Sagar Shrikant Kadam <sagar.ka...@sifive.com>
Tested-by: Vincent Chen <vincent.c...@sifive.com>
---
drivers/clk/sifive/fu540-prci.c | 24 ++++++++++++++++++++++++
1 file changed, 24 insertions(+)
diff --git a/drivers/clk/sifive/fu540-prci.c b/drivers/clk/sifive/fu540-prci.c
index 8847178..ecf29a0 100644
--- a/drivers/clk/sifive/fu540-prci.c
+++ b/drivers/clk/sifive/fu540-prci.c
@@ -580,6 +580,28 @@ static ulong sifive_fu540_prci_set_rate(struct clk *clk,
ulong rate)
return rate;
}
+static int sifive_fu540_prci_clk_request(struct clk *clk)
+{
+ debug("%s(clk=%p) (dev=%p, id=%lu)\n", __func__, clk, clk->dev,
+ clk->id);
+
+ if (clk->id >= ARRAY_SIZE(__prci_init_clocks))
+ return -EINVAL;
+
+ return 0;
+}
+
+static int sifive_fu540_prci_clk_free(struct clk *clk)
+{
+ debug("%s(clk=%p) (dev=%p, id=%lu)\n", __func__, clk, clk->dev,
+ clk->id);
+
+ if (clk->id >= ARRAY_SIZE(__prci_init_clocks))
+ return -EINVAL;
+
+ return 0;
+}
+
static int sifive_fu540_prci_probe(struct udevice *dev)
{
int i, err;
@@ -611,6 +633,8 @@ static int sifive_fu540_prci_probe(struct udevice *dev)
static struct clk_ops sifive_fu540_prci_ops = {
.set_rate = sifive_fu540_prci_set_rate,
.get_rate = sifive_fu540_prci_get_rate,
+ .request = sifive_fu540_prci_clk_request,
+ .rfree = sifive_fu540_prci_clk_free,
};
static const struct udevice_id sifive_fu540_prci_ids[] = {
--
2.7.4
