linux-kernel - Re: [PATCH 1/4] HID: intel-ish-hid: fw-loader: constify devicetable initializer

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Date:   Thu, 11 Nov 2021 10:10:16 +0100
From:   Thomas Weißschuh <linux@...ssschuh.net>
To:     Nathan Chancellor <nathan@...nel.org>, linux-input@...r.kernel.org,
        Jiri Kosina <jikos@...nel.org>,
        Benjamin Tissoires <benjamin.tissoires@...hat.com>
Cc:     linux-kernel@...r.kernel.org,
        Srinivas Pandruvada <srinivas.pandruvada@...ux.intel.com>,
        Rushikesh S Kadam <rushikesh.s.kadam@...el.com>,
        Benson Leung <bleung@...omium.org>,
        Enric Balletbo i Serra <enric.balletbo@...labora.com>,
        Guenter Roeck <groeck@...omium.org>, llvm@...ts.linux.dev,
        Arnd Bergmann <arnd@...db.de>
Subject: Re: [PATCH 1/4] HID: intel-ish-hid: fw-loader: constify devicetable
 initializer

Hi,

On 2021-11-11 00:00+0100, Thomas Weißschuh wrote:
> Previously the compilation broke on clang and gcc < 8.1.0 with errors like
> "error: initializer element is not constant".
> 
> Fixes: 44e2a58cb880 ("HID: intel-ish-hid: fw-loader: only load for matching devices")
> Reported-by: Nathan Chancellor <nathan@...nel.org>
> Signed-off-by: Thomas Weißschuh <linux@...ssschuh.net>
> ---
>  drivers/hid/intel-ish-hid/ishtp-fw-loader.c | 8 ++++----
>  1 file changed, 4 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/hid/intel-ish-hid/ishtp-fw-loader.c b/drivers/hid/intel-ish-hid/ishtp-fw-loader.c
> index 945a9d0b68cd..26f376faf0e6 100644
> --- a/drivers/hid/intel-ish-hid/ishtp-fw-loader.c
> +++ b/drivers/hid/intel-ish-hid/ishtp-fw-loader.c
> @@ -76,9 +76,9 @@ enum ish_loader_commands {
>  #define LOADER_XFER_MODE_ISHTP			BIT(1)
>  
>  /* ISH Transport Loader client unique GUID */
> -static const guid_t loader_ishtp_guid =
> -	GUID_INIT(0xc804d06a, 0x55bd, 0x4ea7,
> -		  0xad, 0xed, 0x1e, 0x31, 0x22, 0x8c, 0x76, 0xdc);
> +#define ISHTP_GUID GUID_INIT(0xc804d06a, 0x55bd, 0x4ea7, \
> +		  0xad, 0xed, 0x1e, 0x31, 0x22, 0x8c, 0x76, 0xdc)
> +static const guid_t loader_ishtp_guid = ISHTP_GUID;
>  
>  #define FILENAME_SIZE				256
>  
> @@ -1064,7 +1064,7 @@ static struct ishtp_cl_driver	loader_ishtp_cl_driver = {
>  };
>  
>  static const struct ishtp_device_id loader_ishtp_id_table[] = {
> -	{ loader_ishtp_guid },
> +	{ ISHTP_GUID },
>  	{ }
>  };
>  MODULE_DEVICE_TABLE(ishtp, loader_ishtp_id_table);
> 
> base-commit: 64355db3caf6468dc711995239efe0cbcd7d0091
> -- 
> 2.33.1
> 

Please drop this whole series and use the patch
"HID: intel-ish-hid: fix module device-id handling"[0]
from Arnd instead.

It adds proper device table support to the ISHTP bus itself also preventing
unused-variable warnings for the device table when the drivers are built-in.

Thanks,
Thomas

[0] https://lore.kernel.org/lkml/20211111085842.2846422-1-arnd@kernel.org/