linux-kernel - Re: [PATCH] powercap: intel_rapl

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Date:   Tue, 11 Jul 2023 20:14:23 +0200
From:   "Rafael J. Wysocki" <rafael@...nel.org>
To:     Zhang Rui <rui.zhang@...el.com>
Cc:     linux-pm@...r.kernel.org, rafael.j.wysocki@...el.com,
        daniel.lezcano@...aro.org, linux-kernel@...r.kernel.org,
        lkp@...el.com
Subject: Re: [PATCH] powercap: intel_rapl_tpmi: Fix a sparse warning

On Tue, Jul 4, 2023 at 7:02 AM Zhang Rui <rui.zhang@...el.com> wrote:
>
> Fix a sparse warning in intel_rapl_tpmi driver.
>
> ../drivers/powercap/intel_rapl_tpmi.c:141:41: sparse: warning: incorrect type in initializer (different address spaces)
> ../drivers/powercap/intel_rapl_tpmi.c:141:41: sparse:    expected unsigned long long [usertype] *tpmi_rapl_regs
> ../drivers/powercap/intel_rapl_tpmi.c:141:41: sparse:    got void [noderef] __iomem *
>
> Fixes: 9eef7f9da928 ("powercap: intel_rapl: Introduce RAPL TPMI interface driver")
> Reported-by: kernel test robot <lkp@...el.com>
> Closes: https://lore.kernel.org/oe-kbuild-all/202307031405.dy3druuy-lkp@intel.com/
> Signed-off-by: Zhang Rui <rui.zhang@...el.com>
> ---
>  drivers/powercap/intel_rapl_tpmi.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/powercap/intel_rapl_tpmi.c b/drivers/powercap/intel_rapl_tpmi.c
> index 4f4f13ded225..05f664a096ab 100644
> --- a/drivers/powercap/intel_rapl_tpmi.c
> +++ b/drivers/powercap/intel_rapl_tpmi.c
> @@ -138,7 +138,7 @@ static int parse_one_domain(struct tpmi_rapl_package *trp, u32 offset)
>         enum tpmi_rapl_register reg_index;
>         enum rapl_domain_reg_id reg_id;
>         int tpmi_domain_size, tpmi_domain_flags;
> -       u64 *tpmi_rapl_regs = trp->base + offset;
> +       u64 *tpmi_rapl_regs = (u64 *)(trp->base + offset);
>         u64 tpmi_domain_header = readq((void __iomem *)tpmi_rapl_regs);
>
>         /* Domain Parent bits are ignored for now */
> --

Applied as 6.5-rc material, thanks!