linux-hardening - Re: [PATCH] clocksource/drivers/timer-sprd: Select driver on ARM and ARM64

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Message-ID: <6a689c83-24de-4d3c-afc1-107439f66130@linux.alibaba.com>
Date: Thu, 19 Sep 2024 15:51:46 +0800
From: Baolin Wang <baolin.wang@...ux.alibaba.com>
To: Enlin Mu <enlin.mu@...look.com>, daniel.lezcano@...aro.org,
 tglx@...utronix.de, orsonzhai@...il.com, zhang.lyra@...il.com,
 linux-kernel@...r.kernel.org, enlin.mu@...soc.com, enlinmu@...il.com
Cc: linux-hardening@...r.kernel.org
Subject: Re: [PATCH] clocksource/drivers/timer-sprd: Select driver on ARM and
 ARM64



On 2024/9/19 15:25, Enlin Mu wrote:
> From: Enlin Mu <enlin.mu@...soc.com>
> 
> sprd timer is currently available on ARM and ARM64 based devices.
> Thus select it for ARM and ARM64
> 
> Signed-off-by: Enlin Mu <enlin.mu@...soc.com>
> ---
>   drivers/clocksource/Kconfig | 4 ++--
>   1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/clocksource/Kconfig b/drivers/clocksource/Kconfig
> index 95dd4660b5b6..296c5f664583 100644
> --- a/drivers/clocksource/Kconfig
> +++ b/drivers/clocksource/Kconfig
> @@ -494,8 +494,8 @@ config MTK_CPUX_TIMER
>   config SPRD_TIMER
>   	bool "Spreadtrum timer driver" if EXPERT
>   	depends on HAS_IOMEM
> -	depends on (ARCH_SPRD || COMPILE_TEST)
> -	default ARCH_SPRD
> +	depends on (ARM || ARM64 || COMPILE_TEST)

I don't understand, if this driver is available on ARM, why ARCH_SPRD is 
not enabled on ARM architecture?

> +	default y
>   	select TIMER_OF
>   	help
>   	  Enables support for the Spreadtrum timer driver.