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

Commit Message

Andy Shevchenko June 6, 2024, 4:09 p.m. UTC

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

Signed-off-by: Andy Shevchenko <[e-mail]>
---
 drivers/clk/samsung/clk-cpu.c | 4 ++--
 drivers/clk/samsung/clk-pll.c | 8 ++++----
 2 files changed, 6 insertions(+), 6 deletions(-)

Comments

Krzysztof Kozlowski June 16, 2024, 7:24 a.m. UTC | #1

On Thu, 06 Jun 2024 19:09:33 +0300, Andy Shevchenko wrote:
> Let the kememdup_array() take care about multiplication and possible
> overflows.
> 
> 

Applied, thanks!

[3/4] clk: samsung: Switch to use kmemdup_array()
      https://git.kernel.org/krzk/linux/c/7666718892f2a8582127f584fdbf5dada59af2d8

Best regards,

Patch

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);