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From: "Ville Syrjälä" <ville.syrjala@linux.intel.com>
To: Colin King <colin.king@canonical.com>
Cc: David Airlie <airlied@linux.ie>,
	intel-gfx@lists.freedesktop.org, kernel-janitors@vger.kernel.org,
	linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org,
	Rodrigo Vivi <rodrigo.vivi@intel.com>
Subject: Re: [Intel-gfx] [PATCH] drm/i915/guc: remove redundant GEM_BUG_ON check
Date: Mon, 11 Jun 2018 16:25:52 +0000	[thread overview]
Message-ID: <20180611162552.GY23723@intel.com> (raw)
In-Reply-To: <20180611160037.23402-1-colin.king@canonical.com>

On Mon, Jun 11, 2018 at 05:00:37PM +0100, Colin King wrote:
> From: Colin Ian King <colin.king@canonical.com>
> 
> The check for level being less than zero is redundant as level
> is an unsigned u32 and hence will never be less than zero.
> Remove this redundant check.
> 
> Detected by CoverityScan, CID#1468363 ("Macro compares unsigned to 0")
> 
> Signed-off-by: Colin Ian King <colin.king@canonical.com>
> ---
>  drivers/gpu/drm/i915/intel_guc.c | 2 --
>  1 file changed, 2 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/intel_guc.c b/drivers/gpu/drm/i915/intel_guc.c
> index 116f4ccf1bbd..a2f782a4f97d 100644
> --- a/drivers/gpu/drm/i915/intel_guc.c
> +++ b/drivers/gpu/drm/i915/intel_guc.c
> @@ -208,8 +208,6 @@ static u32 get_log_control_flags(void)
>  	u32 level = i915_modparams.guc_log_level;
>  	u32 flags = 0;
>  
> -	GEM_BUG_ON(level < 0);

i915_modparams.guc_log_level is a signed int. So s/u32/int would seem
like a better fix.

> -
>  	if (!GUC_LOG_LEVEL_IS_ENABLED(level))
>  		flags |= GUC_LOG_DEFAULT_DISABLED;
>  
> -- 
> 2.17.0
> 
> _______________________________________________
> Intel-gfx mailing list
> Intel-gfx@lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/intel-gfx

-- 
Ville Syrjälä
Intel
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WARNING: multiple messages have this Message-ID (diff)
From: "Ville Syrjälä" <ville.syrjala@linux.intel.com>
To: Colin King <colin.king@canonical.com>
Cc: David Airlie <airlied@linux.ie>,
	intel-gfx@lists.freedesktop.org, kernel-janitors@vger.kernel.org,
	linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org,
	Rodrigo Vivi <rodrigo.vivi@intel.com>
Subject: Re: [PATCH] drm/i915/guc: remove redundant GEM_BUG_ON check
Date: Mon, 11 Jun 2018 19:25:52 +0300	[thread overview]
Message-ID: <20180611162552.GY23723@intel.com> (raw)
In-Reply-To: <20180611160037.23402-1-colin.king@canonical.com>

On Mon, Jun 11, 2018 at 05:00:37PM +0100, Colin King wrote:
> From: Colin Ian King <colin.king@canonical.com>
> 
> The check for level being less than zero is redundant as level
> is an unsigned u32 and hence will never be less than zero.
> Remove this redundant check.
> 
> Detected by CoverityScan, CID#1468363 ("Macro compares unsigned to 0")
> 
> Signed-off-by: Colin Ian King <colin.king@canonical.com>
> ---
>  drivers/gpu/drm/i915/intel_guc.c | 2 --
>  1 file changed, 2 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/intel_guc.c b/drivers/gpu/drm/i915/intel_guc.c
> index 116f4ccf1bbd..a2f782a4f97d 100644
> --- a/drivers/gpu/drm/i915/intel_guc.c
> +++ b/drivers/gpu/drm/i915/intel_guc.c
> @@ -208,8 +208,6 @@ static u32 get_log_control_flags(void)
>  	u32 level = i915_modparams.guc_log_level;
>  	u32 flags = 0;
>  
> -	GEM_BUG_ON(level < 0);

i915_modparams.guc_log_level is a signed int. So s/u32/int would seem
like a better fix.

> -
>  	if (!GUC_LOG_LEVEL_IS_ENABLED(level))
>  		flags |= GUC_LOG_DEFAULT_DISABLED;
>  
> -- 
> 2.17.0
> 
> _______________________________________________
> Intel-gfx mailing list
> Intel-gfx@lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/intel-gfx

-- 
Ville Syrjälä
Intel
_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx

WARNING: multiple messages have this Message-ID (diff)
From: "Ville Syrjälä" <ville.syrjala@linux.intel.com>
To: Colin King <colin.king@canonical.com>
Cc: Jani Nikula <jani.nikula@linux.intel.com>,
	Joonas Lahtinen <joonas.lahtinen@linux.intel.com>,
	Rodrigo Vivi <rodrigo.vivi@intel.com>,
	David Airlie <airlied@linux.ie>,
	intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org,
	kernel-janitors@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [Intel-gfx] [PATCH] drm/i915/guc: remove redundant GEM_BUG_ON check
Date: Mon, 11 Jun 2018 19:25:52 +0300	[thread overview]
Message-ID: <20180611162552.GY23723@intel.com> (raw)
In-Reply-To: <20180611160037.23402-1-colin.king@canonical.com>

On Mon, Jun 11, 2018 at 05:00:37PM +0100, Colin King wrote:
> From: Colin Ian King <colin.king@canonical.com>
> 
> The check for level being less than zero is redundant as level
> is an unsigned u32 and hence will never be less than zero.
> Remove this redundant check.
> 
> Detected by CoverityScan, CID#1468363 ("Macro compares unsigned to 0")
> 
> Signed-off-by: Colin Ian King <colin.king@canonical.com>
> ---
>  drivers/gpu/drm/i915/intel_guc.c | 2 --
>  1 file changed, 2 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/intel_guc.c b/drivers/gpu/drm/i915/intel_guc.c
> index 116f4ccf1bbd..a2f782a4f97d 100644
> --- a/drivers/gpu/drm/i915/intel_guc.c
> +++ b/drivers/gpu/drm/i915/intel_guc.c
> @@ -208,8 +208,6 @@ static u32 get_log_control_flags(void)
>  	u32 level = i915_modparams.guc_log_level;
>  	u32 flags = 0;
>  
> -	GEM_BUG_ON(level < 0);

i915_modparams.guc_log_level is a signed int. So s/u32/int would seem
like a better fix.

> -
>  	if (!GUC_LOG_LEVEL_IS_ENABLED(level))
>  		flags |= GUC_LOG_DEFAULT_DISABLED;
>  
> -- 
> 2.17.0
> 
> _______________________________________________
> Intel-gfx mailing list
> Intel-gfx@lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/intel-gfx

-- 
Ville Syrjälä
Intel

  reply	other threads:[~2018-06-11 16:25 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-06-11 16:00 [PATCH] drm/i915/guc: remove redundant GEM_BUG_ON check Colin King
2018-06-11 16:00 ` Colin King
2018-06-11 16:00 ` Colin King
2018-06-11 16:25 ` Ville Syrjälä [this message]
2018-06-11 16:25   ` [Intel-gfx] " Ville Syrjälä
2018-06-11 16:25   ` Ville Syrjälä
2018-06-11 16:37   ` [Intel-gfx] " Colin Ian King
2018-06-11 16:37     ` Colin Ian King
2018-06-11 16:37     ` Colin Ian King
2018-06-11 16:34 ` ✓ Fi.CI.BAT: success for " Patchwork
2018-06-11 21:08 ` ✓ Fi.CI.IGT: " Patchwork

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