linux-kernel - Re: [PATCH] sata: fsl: fix DPRINTK format string

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Message-ID: <309095e5-6b12-6517-2370-737aae33f012@kernel.dk>
Date:   Mon, 17 May 2021 09:12:50 -0600
From:   Jens Axboe <axboe@...nel.dk>
To:     Arnd Bergmann <arnd@...nel.org>
Cc:     Arnd Bergmann <arnd@...db.de>, linux-ide@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] sata: fsl: fix DPRINTK format string

On 5/14/21 3:33 PM, Arnd Bergmann wrote:
> From: Arnd Bergmann <arnd@...db.de>
> 
> Printing an __iomem pointer as %x produces a warning:
> 
> drivers/ata/sata_fsl.c: In function 'fsl_sata_set_irq_coalescing':
> drivers/ata/sata_fsl.c:316:17: error: format '%x' expects argument of type 'unsigned int', but argument 2 has type 'void *' [-Werror=format=]
>   316 |         DPRINTK("ICC register status: (hcr base: 0x%x) = 0x%x\n",
>       |                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>   317 |                         hcr_base, ioread32(hcr_base + ICC));
>       |                         ~~~~~~~~
>       |                         |
>       |                         void *
> 
> It's not clear why that pointer should be printed here, but if we do,
> then using %p is the way to avoid the warnings.

Applied, thanks.

-- 
Jens Axboe