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Message-ID: <20190628040215.GA24852@intel.com>
Date: Fri, 28 Jun 2019 09:32:15 +0530
From: Ramalingam C <ramalingam.c@...el.com>
To: Arnd Bergmann <arnd@...db.de>
Cc: Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
Maxime Ripard <maxime.ripard@...tlin.com>,
Sean Paul <sean@...rly.run>, David Airlie <airlied@...ux.ie>,
Daniel Vetter <daniel@...ll.ch>,
Noralf Trønnes <noralf@...nnes.org>,
Alex Deucher <alexander.deucher@....com>,
Ville Syrjälä <ville.syrjala@...ux.intel.com>,
Nicholas Kazlauskas <nicholas.kazlauskas@....com>,
Lyude Paul <lyude@...hat.com>,
Uma Shankar <uma.shankar@...el.com>,
Boris Brezillon <bbrezillon@...nel.org>,
Radhakrishna Sripada <radhakrishna.sripada@...el.com>,
dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] drm: connector: remove bogus NULL check
On 2019-06-28 at 12:39:05 +0200, Arnd Bergmann wrote:
> mode->name is a character array in a structure, checking it's
> address is pointless and causes a warning with some compilers:
>
> drivers/gpu/drm/drm_connector.c:144:15: error: address of array 'mode->name' will always evaluate to 'true'
> [-Werror,-Wpointer-bool-conversion]
> mode->name ? mode->name : "",
> ~~~~~~^~~~ ~
> include/drm/drm_print.h:366:29: note: expanded from macro 'DRM_DEBUG_KMS'
> drm_dbg(DRM_UT_KMS, fmt, ##__VA_ARGS__)
> ^~~~~~~~~~~
>
> Remove the check here.
>
> Fixes: 3aeeb13d8996 ("drm/modes: Support modes names on the command line")
> Signed-off-by: Arnd Bergmann <arnd@...db.de>
> ---
> drivers/gpu/drm/drm_connector.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/drm_connector.c b/drivers/gpu/drm/drm_connector.c
> index 3afed5677946..b3f2cf7eae9c 100644
> --- a/drivers/gpu/drm/drm_connector.c
> +++ b/drivers/gpu/drm/drm_connector.c
> @@ -141,7 +141,7 @@ static void drm_connector_get_cmdline_mode(struct drm_connector *connector)
>
> DRM_DEBUG_KMS("cmdline mode for connector %s %s %dx%d@...z%s%s%s\n",
> connector->name,
> - mode->name ? mode->name : "",
> + mode->name,
Looks good to me.
Reviewed-by: Ramalingam C <ramlaingam.c@...el.com>
> mode->xres, mode->yres,
> mode->refresh_specified ? mode->refresh : 60,
> mode->rb ? " reduced blanking" : "",
> --
> 2.20.0
>
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