diff mbox series

drm/kmb: Fix for build errors with Warray-bounds

Message ID 20220127194227.2213608-1-anitha.chrisanthus@intel.com (mailing list archive)
State New, archived
Headers show
Series drm/kmb: Fix for build errors with Warray-bounds | expand

Commit Message

Chrisanthus, Anitha Jan. 27, 2022, 7:42 p.m. UTC
This fixes the following build error

drivers/gpu/drm/kmb/kmb_plane.c: In function 'kmb_plane_atomic_disable':
drivers/gpu/drm/kmb/kmb_plane.c:165:34: error: array subscript 3 is
above array bounds of 'struct layer_status[2]' [-Werror=array-bounds]
  165 |                 kmb->plane_status[plane_id].ctrl =
  LCD_CTRL_GL2_ENABLE;
  |                 ~~~~~~~~~~~~~~~~~^~~~~~~~~~
  In file included from drivers/gpu/drm/kmb/kmb_plane.c:17:
  drivers/gpu/drm/kmb/kmb_drv.h:61:41: note: while referencing
  'plane_status'
  61 |         struct layer_status
  plane_status[KMB_MAX_PLANES];
  |                                         ^~~~~~~~~~~~
  drivers/gpu/drm/kmb/kmb_plane.c:162:34: error: array
  subscript 2 is above array bounds of 'struct
  layer_status[2]' [-Werror=array-bounds]
  162 |
  kmb->plane_status[plane_id].ctrl =
  LCD_CTRL_GL1_ENABLE;
  |                 ~~~~~~~~~~~~~~~~~^~~~~~~~~~
  In file included from
  drivers/gpu/drm/kmb/kmb_plane.c:17:
  drivers/gpu/drm/kmb/kmb_drv.h:61:41: note:
  while referencing 'plane_status'
  61 |         struct layer_status
  plane_status[KMB_MAX_PLANES];
  |
  ^~~~~~~~~~~~

Fixes: 7f7b96a8a0a1 ("drm/kmb: Add support for KeemBay Display")
Signed-off-by: Anitha Chrisanthus <anitha.chrisanthus@intel.com>
---
 drivers/gpu/drm/kmb/kmb_plane.c | 6 ------
 1 file changed, 6 deletions(-)

Comments

Kees Cook Jan. 27, 2022, 9:13 p.m. UTC | #1
On Thu, Jan 27, 2022 at 11:42:27AM -0800, Anitha Chrisanthus wrote:
> This fixes the following build error
> 
> drivers/gpu/drm/kmb/kmb_plane.c: In function 'kmb_plane_atomic_disable':
> drivers/gpu/drm/kmb/kmb_plane.c:165:34: error: array subscript 3 is
> above array bounds of 'struct layer_status[2]' [-Werror=array-bounds]
>   165 |                 kmb->plane_status[plane_id].ctrl =
>   LCD_CTRL_GL2_ENABLE;
>   |                 ~~~~~~~~~~~~~~~~~^~~~~~~~~~
>   In file included from drivers/gpu/drm/kmb/kmb_plane.c:17:
>   drivers/gpu/drm/kmb/kmb_drv.h:61:41: note: while referencing
>   'plane_status'
>   61 |         struct layer_status
>   plane_status[KMB_MAX_PLANES];

This would be better without the line wrapping (to match the actual
output), but otherwise:

Reviewed-by: Kees Cook <keescook@chromium.org>

>   |                                         ^~~~~~~~~~~~
>   drivers/gpu/drm/kmb/kmb_plane.c:162:34: error: array
>   subscript 2 is above array bounds of 'struct
>   layer_status[2]' [-Werror=array-bounds]
>   162 |
>   kmb->plane_status[plane_id].ctrl =
>   LCD_CTRL_GL1_ENABLE;
>   |                 ~~~~~~~~~~~~~~~~~^~~~~~~~~~
>   In file included from
>   drivers/gpu/drm/kmb/kmb_plane.c:17:
>   drivers/gpu/drm/kmb/kmb_drv.h:61:41: note:
>   while referencing 'plane_status'
>   61 |         struct layer_status
>   plane_status[KMB_MAX_PLANES];
>   |
>   ^~~~~~~~~~~~
> 
> Fixes: 7f7b96a8a0a1 ("drm/kmb: Add support for KeemBay Display")
> Signed-off-by: Anitha Chrisanthus <anitha.chrisanthus@intel.com>
> ---
>  drivers/gpu/drm/kmb/kmb_plane.c | 6 ------
>  1 file changed, 6 deletions(-)
> 
> diff --git a/drivers/gpu/drm/kmb/kmb_plane.c b/drivers/gpu/drm/kmb/kmb_plane.c
> index 00404ba4126d..2735b8eb3537 100644
> --- a/drivers/gpu/drm/kmb/kmb_plane.c
> +++ b/drivers/gpu/drm/kmb/kmb_plane.c
> @@ -158,12 +158,6 @@ static void kmb_plane_atomic_disable(struct drm_plane *plane,
>  	case LAYER_1:
>  		kmb->plane_status[plane_id].ctrl = LCD_CTRL_VL2_ENABLE;
>  		break;
> -	case LAYER_2:
> -		kmb->plane_status[plane_id].ctrl = LCD_CTRL_GL1_ENABLE;
> -		break;
> -	case LAYER_3:
> -		kmb->plane_status[plane_id].ctrl = LCD_CTRL_GL2_ENABLE;
> -		break;
>  	}
>  
>  	kmb->plane_status[plane_id].disable = true;
> -- 
> 2.25.1
>
Chrisanthus, Anitha Jan. 27, 2022, 10:34 p.m. UTC | #2
Thanks. Fixed line wrapping and change is pushed to drm-misc-fixes.

> -----Original Message-----
> From: dri-devel <dri-devel-bounces@lists.freedesktop.org> On Behalf Of Kees
> Cook
> Sent: Thursday, January 27, 2022 1:14 PM
> To: Chrisanthus, Anitha <anitha.chrisanthus@intel.com>
> Cc: Dea, Edmund J <edmund.j.dea@intel.com>; sam@ravnborg.org; dri-
> devel@lists.freedesktop.org; sfr@canb.auug.org.au
> Subject: Re: [PATCH] drm/kmb: Fix for build errors with Warray-bounds
> 
> On Thu, Jan 27, 2022 at 11:42:27AM -0800, Anitha Chrisanthus wrote:
> > This fixes the following build error
> >
> > drivers/gpu/drm/kmb/kmb_plane.c: In function 'kmb_plane_atomic_disable':
> > drivers/gpu/drm/kmb/kmb_plane.c:165:34: error: array subscript 3 is
> > above array bounds of 'struct layer_status[2]' [-Werror=array-bounds]
> >   165 |                 kmb->plane_status[plane_id].ctrl =
> >   LCD_CTRL_GL2_ENABLE;
> >   |                 ~~~~~~~~~~~~~~~~~^~~~~~~~~~
> >   In file included from drivers/gpu/drm/kmb/kmb_plane.c:17:
> >   drivers/gpu/drm/kmb/kmb_drv.h:61:41: note: while referencing
> >   'plane_status'
> >   61 |         struct layer_status
> >   plane_status[KMB_MAX_PLANES];
> 
> This would be better without the line wrapping (to match the actual
> output), but otherwise:
> 
> Reviewed-by: Kees Cook <keescook@chromium.org>
> 
> >   |                                         ^~~~~~~~~~~~
> >   drivers/gpu/drm/kmb/kmb_plane.c:162:34: error: array
> >   subscript 2 is above array bounds of 'struct
> >   layer_status[2]' [-Werror=array-bounds]
> >   162 |
> >   kmb->plane_status[plane_id].ctrl =
> >   LCD_CTRL_GL1_ENABLE;
> >   |                 ~~~~~~~~~~~~~~~~~^~~~~~~~~~
> >   In file included from
> >   drivers/gpu/drm/kmb/kmb_plane.c:17:
> >   drivers/gpu/drm/kmb/kmb_drv.h:61:41: note:
> >   while referencing 'plane_status'
> >   61 |         struct layer_status
> >   plane_status[KMB_MAX_PLANES];
> >   |
> >   ^~~~~~~~~~~~
> >
> > Fixes: 7f7b96a8a0a1 ("drm/kmb: Add support for KeemBay Display")
> > Signed-off-by: Anitha Chrisanthus <anitha.chrisanthus@intel.com>
> > ---
> >  drivers/gpu/drm/kmb/kmb_plane.c | 6 ------
> >  1 file changed, 6 deletions(-)
> >
> > diff --git a/drivers/gpu/drm/kmb/kmb_plane.c
> b/drivers/gpu/drm/kmb/kmb_plane.c
> > index 00404ba4126d..2735b8eb3537 100644
> > --- a/drivers/gpu/drm/kmb/kmb_plane.c
> > +++ b/drivers/gpu/drm/kmb/kmb_plane.c
> > @@ -158,12 +158,6 @@ static void kmb_plane_atomic_disable(struct
> drm_plane *plane,
> >  	case LAYER_1:
> >  		kmb->plane_status[plane_id].ctrl = LCD_CTRL_VL2_ENABLE;
> >  		break;
> > -	case LAYER_2:
> > -		kmb->plane_status[plane_id].ctrl = LCD_CTRL_GL1_ENABLE;
> > -		break;
> > -	case LAYER_3:
> > -		kmb->plane_status[plane_id].ctrl = LCD_CTRL_GL2_ENABLE;
> > -		break;
> >  	}
> >
> >  	kmb->plane_status[plane_id].disable = true;
> > --
> > 2.25.1
> >
> 
> --
> Kees Cook
diff mbox series

Patch

diff --git a/drivers/gpu/drm/kmb/kmb_plane.c b/drivers/gpu/drm/kmb/kmb_plane.c
index 00404ba4126d..2735b8eb3537 100644
--- a/drivers/gpu/drm/kmb/kmb_plane.c
+++ b/drivers/gpu/drm/kmb/kmb_plane.c
@@ -158,12 +158,6 @@  static void kmb_plane_atomic_disable(struct drm_plane *plane,
 	case LAYER_1:
 		kmb->plane_status[plane_id].ctrl = LCD_CTRL_VL2_ENABLE;
 		break;
-	case LAYER_2:
-		kmb->plane_status[plane_id].ctrl = LCD_CTRL_GL1_ENABLE;
-		break;
-	case LAYER_3:
-		kmb->plane_status[plane_id].ctrl = LCD_CTRL_GL2_ENABLE;
-		break;
 	}
 
 	kmb->plane_status[plane_id].disable = true;