diff options
| author | Jiasheng Jiang <jiashengjiangcool@gmail.com> | 2025-02-28 15:02:10 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-05-29 11:02:31 +0200 |
| commit | c4f025a58eef14983b424b95f7bafdc5602b79a2 (patch) | |
| tree | 82b6f022f3fc447489b9bd27a5d5d5137c2c2f09 | |
| parent | ebaed867bfd1ef1b56523b940cc1a437f74ef857 (diff) | |
dpll: Add an assertion to check freq_supported_num
[ Upstream commit 39e912a959c19338855b768eaaee2917d7841f71 ]
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.
Signed-off-by: Jiasheng Jiang <jiashengjiangcool@gmail.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Reviewed-by: Vadim Fedorenko <vadim.fedorenko@linux.dev>
Reviewed-by: Arkadiusz Kubalewski <arkadiusz.kubalewski@intel.com>
Link: https://patch.msgid.link/20250228150210.34404-1-jiashengjiangcool@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | drivers/dpll/dpll_core.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/dpll/dpll_core.c b/drivers/dpll/dpll_core.c index 1877201d1aa9..20bdc52f63a5 100644 --- a/drivers/dpll/dpll_core.c +++ b/drivers/dpll/dpll_core.c @@ -443,8 +443,11 @@ 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) { + if (WARN_ON(src->freq_supported && !src->freq_supported_num)) + return -EINVAL; + 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, |