Since the driver is broken in the case that src->freq_supported is not
NULL but src->freq_supported_num is 0, add an assertion for it.
Fixes: 830ead5fb0c5 ("dpll: fix pin dump crash for rebound module")
Cc: <stable@xxxxxxxxxxxxxxx> # v6.8+
Signed-off-by: Jiasheng Jiang <jiashengjiangcool@xxxxxxxxx>
---
Changelog:
v1 -> v2:
1. Replace the check with an assertion.
---
drivers/dpll/dpll_core.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/dpll/dpll_core.c b/drivers/dpll/dpll_core.c
index 32019dc33cca..3296776c1ebb 100644
--- a/drivers/dpll/dpll_core.c
+++ b/drivers/dpll/dpll_core.c
@@ -443,8 +443,9 @@ static void dpll_pin_prop_free(struct dpll_pin_properties *prop)
static int dpll_pin_prop_dup(const struct dpll_pin_properties *src,
struct dpll_pin_properties *dst)
{
+ BUG_ON(src->freq_supported && !src->freq_supported_num);
memcpy(dst, src, sizeof(*dst));
- if (src->freq_supported && src->freq_supported_num) {
+ if (src->freq_supported) {
size_t freq_size = src->freq_supported_num *
sizeof(*src->freq_supported);
dst->freq_supported = kmemdup(src->freq_supported,
--
2.25.1
