From: Kuninori Morimoto <[email protected]>
[ Upstream commit 69235ccf491d2e26aefd465c0d3ccd1e3b2a9a9c ]
ADG has buffer over flow bug if DT has more than 3 clock-frequency.
This patch fixup this issue, and uses first 2 values.
clock-frequency = <x y>; /* this is OK */
clock-frequency = <x y z>; /* this is NG */
Signed-off-by: Kuninori Morimoto <[email protected]>
Tested-by: Hiroyuki Yokoyama <[email protected]>
Signed-off-by: Mark Brown <[email protected]>
Signed-off-by: Sasha Levin <[email protected]>
---
sound/soc/sh/rcar/adg.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/sound/soc/sh/rcar/adg.c b/sound/soc/sh/rcar/adg.c
index e28edb1f7263..eb7879bcc6a7 100644
--- a/sound/soc/sh/rcar/adg.c
+++ b/sound/soc/sh/rcar/adg.c
@@ -467,6 +467,11 @@ static void rsnd_adg_get_clkout(struct rsnd_priv *priv,
goto rsnd_adg_get_clkout_end;
req_size = prop->length / sizeof(u32);
+ if (req_size > REQ_SIZE) {
+ dev_err(dev,
+ "too many clock-frequency, use top %d\n", REQ_SIZE);
+ req_size = REQ_SIZE;
+ }
of_property_read_u32_array(np, "clock-frequency", req_rate, req_size);
req_48kHz_rate = 0;
--
2.17.1
