From: Maxime Ripard <mripard@kernel.org>
To: Tian Yunhao <t123yh@outlook.com>
Cc: Icenowy Zheng <icenowy@aosc.io>, Chen-Yu Tsai <wens@csie.org>,
Michael Turquette <mturquette@baylibre.com>,
Stephen Boyd <sboyd@kernel.org>,
"linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>,
"linux-clk@vger.kernel.org" <linux-clk@vger.kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] clk: sunxi-ng: v3s: Fix incorrect number of hw_clks.
Date: Mon, 11 Nov 2019 13:39:36 +0100 [thread overview]
Message-ID: <20191111123936.GM4345@gilmour.lan> (raw)
In-Reply-To: <BN8PR08MB57792366D78997180A698AF8897A0@BN8PR08MB5779.namprd08.prod.outlook.com>
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Hi,
Thanks for your patch
On Sat, Nov 09, 2019 at 03:19:09PM +0000, Tian Yunhao wrote:
> The hws field of sun8i_v3s_hw_clks has only 74
> members. However, the number specified by CLK_NUMBER
> is 77 (= CLK_I2S0 + 1). This leads to runtime segmentation
> fault that is not always reproducible.
>
> This patch adds a protective field [CLK_NUMBER] which ensures
> ARRAY_SIZE(.hws) is always greater than .num, thus eliminates
> this error.
>
> Signed-off-by: Yunhao Tian <t123yh@outlook.com>
> ---
> drivers/clk/sunxi-ng/ccu-sun8i-v3s.c | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/drivers/clk/sunxi-ng/ccu-sun8i-v3s.c b/drivers/clk/sunxi-ng/ccu-sun8i-v3s.c
> index 5c779eec454b..de7fce7f32e6 100644
> --- a/drivers/clk/sunxi-ng/ccu-sun8i-v3s.c
> +++ b/drivers/clk/sunxi-ng/ccu-sun8i-v3s.c
> @@ -617,6 +617,7 @@ static struct clk_hw_onecell_data sun8i_v3s_hw_clks = {
> [CLK_AVS] = &avs_clk.common.hw,
> [CLK_MBUS] = &mbus_clk.common.hw,
> [CLK_MIPI_CSI] = &mipi_csi_clk.common.hw,
> + [CLK_NUMBER] = NULL,
> },
> .num = CLK_NUMBER,
> };
> @@ -699,6 +700,7 @@ static struct clk_hw_onecell_data sun8i_v3_hw_clks = {
> [CLK_AVS] = &avs_clk.common.hw,
> [CLK_MBUS] = &mbus_clk.common.hw,
> [CLK_MIPI_CSI] = &mipi_csi_clk.common.hw,
> + [CLK_NUMBER] = NULL,
> },
> .num = CLK_NUMBER,
I'd rather have the number of clocks (.num) being properly set.
Maxime
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next parent reply other threads:[~2019-11-11 12:39 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <BN8PR08MB57792366D78997180A698AF8897A0@BN8PR08MB5779.namprd08.prod.outlook.com>
2019-11-11 12:39 ` Maxime Ripard [this message]
2019-11-12 12:59 ` [PATCH] clk: sunxi-ng: v3s: Fix incorrect number of hw_clks Icenowy Zheng
2019-11-12 19:16 ` Maxime Ripard
2019-11-25 12:58 Yunhao Tian
2019-11-28 17:44 ` Maxime Ripard
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