[PATCH v1 3/4] clk: samsung: Switch to use kmemdup_array()

Andy Shevchenko
2024-06-06T16:10:42Z

Let the kememdup_array() take care about multiplication and possible
overflows.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
drivers/clk/samsung/clk-cpu.c | 4 ++--
drivers/clk/samsung/clk-pll.c | 8 ++++----
2 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/drivers/clk/samsung/clk-cpu.c b/drivers/clk/samsung/clk-cpu.c
index fbf4c4208e06..dfa149e648aa 100644
--- a/drivers/clk/samsung/clk-cpu.c
+++ b/drivers/clk/samsung/clk-cpu.c
@@ -689,8 +689,8 @@ static int __init exynos_register_cpu_clock(struct samsung_clk_provider *ctx,
for (num_cfgs = 0; clk_data->cfg[num_cfgs].prate != 0; )
num_cfgs++;

- cpuclk->cfg = kmemdup(clk_data->cfg, sizeof(*clk_data->cfg) * num_cfgs,
- GFP_KERNEL);
+ cpuclk->cfg = kmemdup_array(clk_data->cfg, num_cfgs, sizeof(*cpuclk->cfg),
+ GFP_KERNEL);
if (!cpuclk->cfg) {
ret = -ENOMEM;
goto unregister_clk_nb;
diff --git a/drivers/clk/samsung/clk-pll.c b/drivers/clk/samsung/clk-pll.c
index 4bbdf5e91650..4be879ab917e 100644
--- a/drivers/clk/samsung/clk-pll.c
+++ b/drivers/clk/samsung/clk-pll.c
@@ -1286,10 +1286,10 @@ static void __init _samsung_clk_register_pll(struct samsung_clk_provider *ctx,
len++;

pll->rate_count = len;
- pll->rate_table = kmemdup(pll_clk->rate_table,
- pll->rate_count *
- sizeof(struct samsung_pll_rate_table),
- GFP_KERNEL);
+ pll->rate_table = kmemdup_array(pll_clk->rate_table,
+ pll->rate_count,
+ sizeof(*pll->rate_table),
+ GFP_KERNEL);
WARN(!pll->rate_table,
"%s: could not allocate rate table for %s\n",
__func__, pll_clk->name);
--
2.43.0.rc1.1336.g36b5255a03ac