diff options
| author | Erick Archer <erick.archer@gmx.com> | 2024-01-21 15:29:46 +0100 |
|---|---|---|
| committer | Stephen Boyd <sboyd@kernel.org> | 2024-02-21 20:27:19 -0800 |
| commit | 252c31a90e04dee4d828282ca364daf05eb62000 (patch) | |
| tree | 152f32a53261725000204bd3846aa360bf728ab2 /drivers/clk/hisilicon | |
| parent | 64c6a38136b74a2f18c42199830975edd9fbc379 (diff) | |
clk: hisilicon: Use devm_kcalloc() instead of devm_kzalloc()
As noted in the "Deprecated Interfaces, Language Features, Attributes,
and Conventions" documentation [1], size calculations (especially
multiplication) should not be performed in memory allocator (or similar)
function arguments due to the risk of them overflowing. This could lead
to values wrapping around and a smaller allocation being made than the
caller was expecting. Using those allocations could lead to linear
overflows of heap memory and other misbehaviors.
So, use the purpose specific devm_kcalloc() function instead of the
argument size * count in the devm_kzalloc() function.
Link: https://www.kernel.org/doc/html/next/process/deprecated.html#open-coded-arithmetic-in-allocator-arguments [1]
Link: https://github.com/KSPP/linux/issues/162
Signed-off-by: Erick Archer <erick.archer@gmx.com>
Link: https://lore.kernel.org/r/20240121142946.2796-1-erick.archer@gmx.com
Reviewed-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Reviewed-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Diffstat (limited to 'drivers/clk/hisilicon')
| -rw-r--r-- | drivers/clk/hisilicon/clk-hi3559a.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/drivers/clk/hisilicon/clk-hi3559a.c b/drivers/clk/hisilicon/clk-hi3559a.c index 4623befafaec..c79a94f6d9d2 100644 --- a/drivers/clk/hisilicon/clk-hi3559a.c +++ b/drivers/clk/hisilicon/clk-hi3559a.c @@ -461,8 +461,7 @@ static void hisi_clk_register_pll(struct hi3559av100_pll_clock *clks, struct clk_init_data init; int i; - p_clk = devm_kzalloc(dev, sizeof(*p_clk) * nums, GFP_KERNEL); - + p_clk = devm_kcalloc(dev, nums, sizeof(*p_clk), GFP_KERNEL); if (!p_clk) return; |