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From: Alexandre Belloni <alexandre.belloni@bootlin.com>
To: "Clément Léger" <clement.leger@bootlin.com>
Cc: Michael Turquette <mturquette@baylibre.com>,
	Stephen Boyd <sboyd@kernel.org>,
	Nicolas Ferre <nicolas.ferre@microchip.com>,
	Ludovic Desroches <ludovic.desroches@microchip.com>,
	linux-clk@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH] clk: at91: fix count of periph clocks passed to pmc_data_allocate
Date: Wed, 9 Jun 2021 10:31:01 +0200	[thread overview]
Message-ID: <YMB8RYhCY4WVQXg+@piout.net> (raw)
In-Reply-To: <20210609080145.44226-1-clement.leger@bootlin.com>

hi,

Subject should have been:
clk: at91: sama5d2: fix count of periph clocks passed to pmc_data_allocate



On 09/06/2021 10:01:44+0200, Clément Léger wrote:
> When allocating clk_hw structure, only the periph32 clocks are considered.
> Since sama5d2_periphck are also added to the phws there is currently an
> out of bound write. Fix this by adding the count of periphck to periph32ck.
> 
> Signed-off-by: Clément Léger <clement.leger@bootlin.com>
Fixes: a2038077de9a ("clk: at91: add sama5d2 PMC driver")

> ---
>  drivers/clk/at91/sama5d2.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/clk/at91/sama5d2.c b/drivers/clk/at91/sama5d2.c
> index 3d1f78176c3e..663b73a032ee 100644
> --- a/drivers/clk/at91/sama5d2.c
> +++ b/drivers/clk/at91/sama5d2.c
> @@ -170,7 +170,7 @@ static void __init sama5d2_pmc_setup(struct device_node *np)
>  
>  	sama5d2_pmc = pmc_data_allocate(PMC_AUDIOPLLCK + 1,
>  					nck(sama5d2_systemck),
> -					nck(sama5d2_periph32ck),
> +					nck(sama5d2_periphck) + nck(sama5d2_periph32ck),
>  					nck(sama5d2_gck), 3);
>  	if (!sama5d2_pmc)
>  		return;
> -- 
> 2.32.0
> 

-- 
Alexandre Belloni, co-owner and COO, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com

WARNING: multiple messages have this Message-ID (diff)
From: Alexandre Belloni <alexandre.belloni@bootlin.com>
To: "Clément Léger" <clement.leger@bootlin.com>
Cc: Stephen Boyd <sboyd@kernel.org>,
	Michael Turquette <mturquette@baylibre.com>,
	linux-kernel@vger.kernel.org,
	Ludovic Desroches <ludovic.desroches@microchip.com>,
	linux-clk@vger.kernel.org, linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH] clk: at91: fix count of periph clocks passed to pmc_data_allocate
Date: Wed, 9 Jun 2021 10:31:01 +0200	[thread overview]
Message-ID: <YMB8RYhCY4WVQXg+@piout.net> (raw)
In-Reply-To: <20210609080145.44226-1-clement.leger@bootlin.com>

hi,

Subject should have been:
clk: at91: sama5d2: fix count of periph clocks passed to pmc_data_allocate



On 09/06/2021 10:01:44+0200, Clément Léger wrote:
> When allocating clk_hw structure, only the periph32 clocks are considered.
> Since sama5d2_periphck are also added to the phws there is currently an
> out of bound write. Fix this by adding the count of periphck to periph32ck.
> 
> Signed-off-by: Clément Léger <clement.leger@bootlin.com>
Fixes: a2038077de9a ("clk: at91: add sama5d2 PMC driver")

> ---
>  drivers/clk/at91/sama5d2.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/clk/at91/sama5d2.c b/drivers/clk/at91/sama5d2.c
> index 3d1f78176c3e..663b73a032ee 100644
> --- a/drivers/clk/at91/sama5d2.c
> +++ b/drivers/clk/at91/sama5d2.c
> @@ -170,7 +170,7 @@ static void __init sama5d2_pmc_setup(struct device_node *np)
>  
>  	sama5d2_pmc = pmc_data_allocate(PMC_AUDIOPLLCK + 1,
>  					nck(sama5d2_systemck),
> -					nck(sama5d2_periph32ck),
> +					nck(sama5d2_periphck) + nck(sama5d2_periph32ck),
>  					nck(sama5d2_gck), 3);
>  	if (!sama5d2_pmc)
>  		return;
> -- 
> 2.32.0
> 

-- 
Alexandre Belloni, co-owner and COO, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com

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  reply	other threads:[~2021-06-09  8:31 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-06-09  8:01 [PATCH] clk: at91: fix count of periph clocks passed to pmc_data_allocate Clément Léger
2021-06-09  8:01 ` Clément Léger
2021-06-09  8:31 ` Alexandre Belloni [this message]
2021-06-09  8:31   ` Alexandre Belloni
2021-07-08 14:13   ` Clément Léger
2021-07-08 14:13     ` Clément Léger

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