linux-kernel - Re: [asahilinux:asahi-soc/rtkit-sart-nvme 4/6] drivers/soc/apple/sart.c:284:4: warning: format specifies type 'unsigned long long' but the argument has type 'phys_addr

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Date:   Mon, 2 May 2022 08:39:12 +0200
From:   Arnd Bergmann <arnd@...db.de>
To:     kernel test robot <lkp@...el.com>
Cc:     Sven Peter <sven@...npeter.dev>,
        clang-built-linux <llvm@...ts.linux.dev>,
        kbuild-all@...ts.01.org,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Arnd Bergmann <arnd@...db.de>, Hector Martin <marcan@...can.st>
Subject: Re: [asahilinux:asahi-soc/rtkit-sart-nvme 4/6] drivers/soc/apple/sart.c:284:4:
 warning: format specifies type 'unsigned long long' but the argument has type
 'phys_addr_t' (aka 'unsigned int')

On Mon, May 2, 2022 at 2:21 AM kernel test robot <lkp@...el.com> wrote:

>    277
>    278                  clear_bit(i, &sart->used_entries);
>    279                  dev_dbg(sart->dev, "cleared entry %d\n", i);
>    280                  return 0;
>    281          }
>    282
>    283          dev_warn(sart->dev, "entry [paddr: 0x%llx, size: 0x%zx] not found\n",
>  > 284                   paddr, size);
>    285

Hi Sven,

to print a phys_addr_t, you should pass the address by reference and use
the special "%pap" format string modifier. I'm not entirely sure if it should
actually be a dma_addr_t instead of a phys_addr_t. If the type gets changed,
the format string would become "%pad".

       Arnd