* Re: [Intel-gfx] [PATCH 01/15] drm/i915/plane: warn on non-zero plane offset
2023-05-26 16:37 ` [Intel-gfx] [PATCH 01/15] drm/i915/plane: warn on non-zero plane offset Jani Nikula
@ 2023-05-26 16:49 ` Ville Syrjälä
2023-05-26 17:22 ` Jani Nikula
2023-05-27 0:27 ` kernel test robot
` (2 subsequent siblings)
3 siblings, 1 reply; 12+ messages in thread
From: Ville Syrjälä @ 2023-05-26 16:49 UTC (permalink / raw)
To: Jani Nikula; +Cc: intel-gfx
On Fri, May 26, 2023 at 07:37:54PM +0300, Jani Nikula wrote:
> We assume the plane offset is 0. Warn if it's not. This also fixes a
> warn on unused but set variable offset.
>
> Suggested-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
> Signed-off-by: Jani Nikula <jani.nikula@intel.com>
> ---
> drivers/gpu/drm/i915/display/i9xx_plane.c | 2 ++
> drivers/gpu/drm/i915/display/skl_universal_plane.c | 1 +
> 2 files changed, 3 insertions(+)
>
> diff --git a/drivers/gpu/drm/i915/display/i9xx_plane.c b/drivers/gpu/drm/i915/display/i9xx_plane.c
> index 616654adbfb8..b52a681ca85e 100644
> --- a/drivers/gpu/drm/i915/display/i9xx_plane.c
> +++ b/drivers/gpu/drm/i915/display/i9xx_plane.c
> @@ -1037,6 +1037,8 @@ i9xx_get_initial_plane_config(struct intel_crtc *crtc,
> }
> plane_config->base = base;
>
> + drm_WARN_ON(&dev_priv->drm, offset != 0);
> +
The gen2/3 codepath doesn't appear to initialize offset at all.
With that fixed this is
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
> val = intel_de_read(dev_priv, PIPESRC(pipe));
> fb->width = REG_FIELD_GET(PIPESRC_WIDTH_MASK, val) + 1;
> fb->height = REG_FIELD_GET(PIPESRC_HEIGHT_MASK, val) + 1;
> diff --git a/drivers/gpu/drm/i915/display/skl_universal_plane.c b/drivers/gpu/drm/i915/display/skl_universal_plane.c
> index 36070d86550f..6b01a0b68b97 100644
> --- a/drivers/gpu/drm/i915/display/skl_universal_plane.c
> +++ b/drivers/gpu/drm/i915/display/skl_universal_plane.c
> @@ -2529,6 +2529,7 @@ skl_get_initial_plane_config(struct intel_crtc *crtc,
> plane_config->base = base;
>
> offset = intel_de_read(dev_priv, PLANE_OFFSET(pipe, plane_id));
> + drm_WARN_ON(&dev_priv->drm, offset != 0);
>
> val = intel_de_read(dev_priv, PLANE_SIZE(pipe, plane_id));
> fb->height = REG_FIELD_GET(PLANE_HEIGHT_MASK, val) + 1;
> --
> 2.39.2
--
Ville Syrjälä
Intel
^ permalink raw reply [flat|nested] 12+ messages in thread* Re: [Intel-gfx] [PATCH 01/15] drm/i915/plane: warn on non-zero plane offset
2023-05-26 16:49 ` Ville Syrjälä
@ 2023-05-26 17:22 ` Jani Nikula
0 siblings, 0 replies; 12+ messages in thread
From: Jani Nikula @ 2023-05-26 17:22 UTC (permalink / raw)
To: Ville Syrjälä; +Cc: intel-gfx
On Fri, 26 May 2023, Ville Syrjälä <ville.syrjala@linux.intel.com> wrote:
> On Fri, May 26, 2023 at 07:37:54PM +0300, Jani Nikula wrote:
>> We assume the plane offset is 0. Warn if it's not. This also fixes a
>> warn on unused but set variable offset.
>>
>> Suggested-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
>> Signed-off-by: Jani Nikula <jani.nikula@intel.com>
>> ---
>> drivers/gpu/drm/i915/display/i9xx_plane.c | 2 ++
>> drivers/gpu/drm/i915/display/skl_universal_plane.c | 1 +
>> 2 files changed, 3 insertions(+)
>>
>> diff --git a/drivers/gpu/drm/i915/display/i9xx_plane.c b/drivers/gpu/drm/i915/display/i9xx_plane.c
>> index 616654adbfb8..b52a681ca85e 100644
>> --- a/drivers/gpu/drm/i915/display/i9xx_plane.c
>> +++ b/drivers/gpu/drm/i915/display/i9xx_plane.c
>> @@ -1037,6 +1037,8 @@ i9xx_get_initial_plane_config(struct intel_crtc *crtc,
>> }
>> plane_config->base = base;
>>
>> + drm_WARN_ON(&dev_priv->drm, offset != 0);
>> +
>
> The gen2/3 codepath doesn't appear to initialize offset at all.
Right. I wonder why I didn't get a warning about using an uninitialized
variable.
>
> With that fixed this is
> Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Thanks, v2 sent.
>
>> val = intel_de_read(dev_priv, PIPESRC(pipe));
>> fb->width = REG_FIELD_GET(PIPESRC_WIDTH_MASK, val) + 1;
>> fb->height = REG_FIELD_GET(PIPESRC_HEIGHT_MASK, val) + 1;
>> diff --git a/drivers/gpu/drm/i915/display/skl_universal_plane.c b/drivers/gpu/drm/i915/display/skl_universal_plane.c
>> index 36070d86550f..6b01a0b68b97 100644
>> --- a/drivers/gpu/drm/i915/display/skl_universal_plane.c
>> +++ b/drivers/gpu/drm/i915/display/skl_universal_plane.c
>> @@ -2529,6 +2529,7 @@ skl_get_initial_plane_config(struct intel_crtc *crtc,
>> plane_config->base = base;
>>
>> offset = intel_de_read(dev_priv, PLANE_OFFSET(pipe, plane_id));
>> + drm_WARN_ON(&dev_priv->drm, offset != 0);
>>
>> val = intel_de_read(dev_priv, PLANE_SIZE(pipe, plane_id));
>> fb->height = REG_FIELD_GET(PLANE_HEIGHT_MASK, val) + 1;
>> --
>> 2.39.2
--
Jani Nikula, Intel Open Source Graphics Center
^ permalink raw reply [flat|nested] 12+ messages in thread
* Re: [Intel-gfx] [PATCH 01/15] drm/i915/plane: warn on non-zero plane offset
2023-05-26 16:37 ` [Intel-gfx] [PATCH 01/15] drm/i915/plane: warn on non-zero plane offset Jani Nikula
@ 2023-05-27 0:27 ` kernel test robot
2023-05-27 0:27 ` kernel test robot
` (2 subsequent siblings)
3 siblings, 0 replies; 12+ messages in thread
From: kernel test robot @ 2023-05-27 0:27 UTC (permalink / raw)
To: Jani Nikula, intel-gfx; +Cc: jani.nikula, llvm, oe-kbuild-all
Hi Jani,
kernel test robot noticed the following build errors:
[auto build test ERROR on drm-tip/drm-tip]
url: https://github.com/intel-lab-lkp/linux/commits/Jani-Nikula/drm-i915-plane-warn-on-non-zero-plane-offset/20230527-003951
base: git://anongit.freedesktop.org/drm/drm-tip drm-tip
patch link: https://lore.kernel.org/r/0988d237e56c56568f035053da8e2e2308a17d3a.1685119007.git.jani.nikula%40intel.com
patch subject: [Intel-gfx] [PATCH 01/15] drm/i915/plane: warn on non-zero plane offset
config: x86_64-randconfig-x056-20230526 (https://download.01.org/0day-ci/archive/20230527/202305270846.ZA7bj1cg-lkp@intel.com/config)
compiler: clang version 14.0.6 (https://github.com/llvm/llvm-project f28c006a5895fc0e329fe15fead81e37457cb1d1)
reproduce (this is a W=1 build):
mkdir -p ~/bin
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# https://github.com/intel-lab-lkp/linux/commit/40c3d9e9221e230ab6f0b2e3051b6c4566a1e852
git remote add linux-review https://github.com/intel-lab-lkp/linux
git fetch --no-tags linux-review Jani-Nikula/drm-i915-plane-warn-on-non-zero-plane-offset/20230527-003951
git checkout 40c3d9e9221e230ab6f0b2e3051b6c4566a1e852
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang ~/bin/make.cross W=1 O=build_dir ARCH=x86_64 olddefconfig
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang ~/bin/make.cross W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash drivers/gpu/drm/i915/
If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202305270846.ZA7bj1cg-lkp@intel.com/
All errors (new ones prefixed by >>):
>> drivers/gpu/drm/i915/display/i9xx_plane.c:1027:13: error: variable 'offset' is used uninitialized whenever 'if' condition is false [-Werror,-Wsometimes-uninitialized]
} else if (DISPLAY_VER(dev_priv) >= 4) {
^~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/i915/i915_drv.h:433:27: note: expanded from macro 'DISPLAY_VER'
#define DISPLAY_VER(i915) (DISPLAY_RUNTIME_INFO(i915)->ip.ver)
^
drivers/gpu/drm/i915/display/i9xx_plane.c:1040:30: note: uninitialized use occurs here
drm_WARN_ON(&dev_priv->drm, offset != 0);
^~~~~~
include/drm/drm_print.h:630:19: note: expanded from macro 'drm_WARN_ON'
drm_WARN((drm), (x), "%s", \
^
include/drm/drm_print.h:620:7: note: expanded from macro 'drm_WARN'
WARN(condition, "%s %s: " format, \
^~~~~~~~~
include/asm-generic/bug.h:131:25: note: expanded from macro 'WARN'
int __ret_warn_on = !!(condition); \
^~~~~~~~~
drivers/gpu/drm/i915/display/i9xx_plane.c:1027:9: note: remove the 'if' if its condition is always true
} else if (DISPLAY_VER(dev_priv) >= 4) {
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/i915/display/i9xx_plane.c:983:23: note: initialize the variable 'offset' to silence this warning
u32 val, base, offset;
^
= 0
1 error generated.
vim +1027 drivers/gpu/drm/i915/display/i9xx_plane.c
2a3014490cd18a Dave Airlie 2021-02-05 973
2a3014490cd18a Dave Airlie 2021-02-05 974 void
2a3014490cd18a Dave Airlie 2021-02-05 975 i9xx_get_initial_plane_config(struct intel_crtc *crtc,
2a3014490cd18a Dave Airlie 2021-02-05 976 struct intel_initial_plane_config *plane_config)
2a3014490cd18a Dave Airlie 2021-02-05 977 {
2a3014490cd18a Dave Airlie 2021-02-05 978 struct drm_device *dev = crtc->base.dev;
2a3014490cd18a Dave Airlie 2021-02-05 979 struct drm_i915_private *dev_priv = to_i915(dev);
2a3014490cd18a Dave Airlie 2021-02-05 980 struct intel_plane *plane = to_intel_plane(crtc->base.primary);
2a3014490cd18a Dave Airlie 2021-02-05 981 enum i9xx_plane_id i9xx_plane = plane->i9xx_plane;
2a3014490cd18a Dave Airlie 2021-02-05 982 enum pipe pipe;
2a3014490cd18a Dave Airlie 2021-02-05 983 u32 val, base, offset;
2a3014490cd18a Dave Airlie 2021-02-05 984 int fourcc, pixel_format;
2a3014490cd18a Dave Airlie 2021-02-05 985 unsigned int aligned_height;
2a3014490cd18a Dave Airlie 2021-02-05 986 struct drm_framebuffer *fb;
2a3014490cd18a Dave Airlie 2021-02-05 987 struct intel_framebuffer *intel_fb;
2a3014490cd18a Dave Airlie 2021-02-05 988
2a3014490cd18a Dave Airlie 2021-02-05 989 if (!plane->get_hw_state(plane, &pipe))
2a3014490cd18a Dave Airlie 2021-02-05 990 return;
2a3014490cd18a Dave Airlie 2021-02-05 991
2a3014490cd18a Dave Airlie 2021-02-05 992 drm_WARN_ON(dev, pipe != crtc->pipe);
2a3014490cd18a Dave Airlie 2021-02-05 993
2a3014490cd18a Dave Airlie 2021-02-05 994 intel_fb = kzalloc(sizeof(*intel_fb), GFP_KERNEL);
2a3014490cd18a Dave Airlie 2021-02-05 995 if (!intel_fb) {
2a3014490cd18a Dave Airlie 2021-02-05 996 drm_dbg_kms(&dev_priv->drm, "failed to alloc fb\n");
2a3014490cd18a Dave Airlie 2021-02-05 997 return;
2a3014490cd18a Dave Airlie 2021-02-05 998 }
2a3014490cd18a Dave Airlie 2021-02-05 999
2a3014490cd18a Dave Airlie 2021-02-05 1000 fb = &intel_fb->base;
2a3014490cd18a Dave Airlie 2021-02-05 1001
2a3014490cd18a Dave Airlie 2021-02-05 1002 fb->dev = dev;
2a3014490cd18a Dave Airlie 2021-02-05 1003
2a3014490cd18a Dave Airlie 2021-02-05 1004 val = intel_de_read(dev_priv, DSPCNTR(i9xx_plane));
2a3014490cd18a Dave Airlie 2021-02-05 1005
005e95377249cb Matt Roper 2021-03-19 1006 if (DISPLAY_VER(dev_priv) >= 4) {
428cb15d5b0031 Ville Syrjälä 2022-01-21 1007 if (val & DISP_TILED) {
2a3014490cd18a Dave Airlie 2021-02-05 1008 plane_config->tiling = I915_TILING_X;
2a3014490cd18a Dave Airlie 2021-02-05 1009 fb->modifier = I915_FORMAT_MOD_X_TILED;
2a3014490cd18a Dave Airlie 2021-02-05 1010 }
2a3014490cd18a Dave Airlie 2021-02-05 1011
428cb15d5b0031 Ville Syrjälä 2022-01-21 1012 if (val & DISP_ROTATE_180)
2a3014490cd18a Dave Airlie 2021-02-05 1013 plane_config->rotation = DRM_MODE_ROTATE_180;
2a3014490cd18a Dave Airlie 2021-02-05 1014 }
2a3014490cd18a Dave Airlie 2021-02-05 1015
2a3014490cd18a Dave Airlie 2021-02-05 1016 if (IS_CHERRYVIEW(dev_priv) && pipe == PIPE_B &&
428cb15d5b0031 Ville Syrjälä 2022-01-21 1017 val & DISP_MIRROR)
2a3014490cd18a Dave Airlie 2021-02-05 1018 plane_config->rotation |= DRM_MODE_REFLECT_X;
2a3014490cd18a Dave Airlie 2021-02-05 1019
428cb15d5b0031 Ville Syrjälä 2022-01-21 1020 pixel_format = val & DISP_FORMAT_MASK;
2a3014490cd18a Dave Airlie 2021-02-05 1021 fourcc = i9xx_format_to_fourcc(pixel_format);
2a3014490cd18a Dave Airlie 2021-02-05 1022 fb->format = drm_format_info(fourcc);
2a3014490cd18a Dave Airlie 2021-02-05 1023
2a3014490cd18a Dave Airlie 2021-02-05 1024 if (IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv)) {
2a3014490cd18a Dave Airlie 2021-02-05 1025 offset = intel_de_read(dev_priv, DSPOFFSET(i9xx_plane));
428cb15d5b0031 Ville Syrjälä 2022-01-21 1026 base = intel_de_read(dev_priv, DSPSURF(i9xx_plane)) & DISP_ADDR_MASK;
005e95377249cb Matt Roper 2021-03-19 @1027 } else if (DISPLAY_VER(dev_priv) >= 4) {
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
^ permalink raw reply [flat|nested] 12+ messages in thread* Re: [Intel-gfx] [PATCH 01/15] drm/i915/plane: warn on non-zero plane offset
@ 2023-05-27 0:27 ` kernel test robot
0 siblings, 0 replies; 12+ messages in thread
From: kernel test robot @ 2023-05-27 0:27 UTC (permalink / raw)
To: Jani Nikula, intel-gfx; +Cc: llvm, oe-kbuild-all, jani.nikula
Hi Jani,
kernel test robot noticed the following build errors:
[auto build test ERROR on drm-tip/drm-tip]
url: https://github.com/intel-lab-lkp/linux/commits/Jani-Nikula/drm-i915-plane-warn-on-non-zero-plane-offset/20230527-003951
base: git://anongit.freedesktop.org/drm/drm-tip drm-tip
patch link: https://lore.kernel.org/r/0988d237e56c56568f035053da8e2e2308a17d3a.1685119007.git.jani.nikula%40intel.com
patch subject: [Intel-gfx] [PATCH 01/15] drm/i915/plane: warn on non-zero plane offset
config: x86_64-randconfig-x056-20230526 (https://download.01.org/0day-ci/archive/20230527/202305270846.ZA7bj1cg-lkp@intel.com/config)
compiler: clang version 14.0.6 (https://github.com/llvm/llvm-project f28c006a5895fc0e329fe15fead81e37457cb1d1)
reproduce (this is a W=1 build):
mkdir -p ~/bin
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# https://github.com/intel-lab-lkp/linux/commit/40c3d9e9221e230ab6f0b2e3051b6c4566a1e852
git remote add linux-review https://github.com/intel-lab-lkp/linux
git fetch --no-tags linux-review Jani-Nikula/drm-i915-plane-warn-on-non-zero-plane-offset/20230527-003951
git checkout 40c3d9e9221e230ab6f0b2e3051b6c4566a1e852
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang ~/bin/make.cross W=1 O=build_dir ARCH=x86_64 olddefconfig
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang ~/bin/make.cross W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash drivers/gpu/drm/i915/
If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202305270846.ZA7bj1cg-lkp@intel.com/
All errors (new ones prefixed by >>):
>> drivers/gpu/drm/i915/display/i9xx_plane.c:1027:13: error: variable 'offset' is used uninitialized whenever 'if' condition is false [-Werror,-Wsometimes-uninitialized]
} else if (DISPLAY_VER(dev_priv) >= 4) {
^~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/i915/i915_drv.h:433:27: note: expanded from macro 'DISPLAY_VER'
#define DISPLAY_VER(i915) (DISPLAY_RUNTIME_INFO(i915)->ip.ver)
^
drivers/gpu/drm/i915/display/i9xx_plane.c:1040:30: note: uninitialized use occurs here
drm_WARN_ON(&dev_priv->drm, offset != 0);
^~~~~~
include/drm/drm_print.h:630:19: note: expanded from macro 'drm_WARN_ON'
drm_WARN((drm), (x), "%s", \
^
include/drm/drm_print.h:620:7: note: expanded from macro 'drm_WARN'
WARN(condition, "%s %s: " format, \
^~~~~~~~~
include/asm-generic/bug.h:131:25: note: expanded from macro 'WARN'
int __ret_warn_on = !!(condition); \
^~~~~~~~~
drivers/gpu/drm/i915/display/i9xx_plane.c:1027:9: note: remove the 'if' if its condition is always true
} else if (DISPLAY_VER(dev_priv) >= 4) {
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/i915/display/i9xx_plane.c:983:23: note: initialize the variable 'offset' to silence this warning
u32 val, base, offset;
^
= 0
1 error generated.
vim +1027 drivers/gpu/drm/i915/display/i9xx_plane.c
2a3014490cd18a Dave Airlie 2021-02-05 973
2a3014490cd18a Dave Airlie 2021-02-05 974 void
2a3014490cd18a Dave Airlie 2021-02-05 975 i9xx_get_initial_plane_config(struct intel_crtc *crtc,
2a3014490cd18a Dave Airlie 2021-02-05 976 struct intel_initial_plane_config *plane_config)
2a3014490cd18a Dave Airlie 2021-02-05 977 {
2a3014490cd18a Dave Airlie 2021-02-05 978 struct drm_device *dev = crtc->base.dev;
2a3014490cd18a Dave Airlie 2021-02-05 979 struct drm_i915_private *dev_priv = to_i915(dev);
2a3014490cd18a Dave Airlie 2021-02-05 980 struct intel_plane *plane = to_intel_plane(crtc->base.primary);
2a3014490cd18a Dave Airlie 2021-02-05 981 enum i9xx_plane_id i9xx_plane = plane->i9xx_plane;
2a3014490cd18a Dave Airlie 2021-02-05 982 enum pipe pipe;
2a3014490cd18a Dave Airlie 2021-02-05 983 u32 val, base, offset;
2a3014490cd18a Dave Airlie 2021-02-05 984 int fourcc, pixel_format;
2a3014490cd18a Dave Airlie 2021-02-05 985 unsigned int aligned_height;
2a3014490cd18a Dave Airlie 2021-02-05 986 struct drm_framebuffer *fb;
2a3014490cd18a Dave Airlie 2021-02-05 987 struct intel_framebuffer *intel_fb;
2a3014490cd18a Dave Airlie 2021-02-05 988
2a3014490cd18a Dave Airlie 2021-02-05 989 if (!plane->get_hw_state(plane, &pipe))
2a3014490cd18a Dave Airlie 2021-02-05 990 return;
2a3014490cd18a Dave Airlie 2021-02-05 991
2a3014490cd18a Dave Airlie 2021-02-05 992 drm_WARN_ON(dev, pipe != crtc->pipe);
2a3014490cd18a Dave Airlie 2021-02-05 993
2a3014490cd18a Dave Airlie 2021-02-05 994 intel_fb = kzalloc(sizeof(*intel_fb), GFP_KERNEL);
2a3014490cd18a Dave Airlie 2021-02-05 995 if (!intel_fb) {
2a3014490cd18a Dave Airlie 2021-02-05 996 drm_dbg_kms(&dev_priv->drm, "failed to alloc fb\n");
2a3014490cd18a Dave Airlie 2021-02-05 997 return;
2a3014490cd18a Dave Airlie 2021-02-05 998 }
2a3014490cd18a Dave Airlie 2021-02-05 999
2a3014490cd18a Dave Airlie 2021-02-05 1000 fb = &intel_fb->base;
2a3014490cd18a Dave Airlie 2021-02-05 1001
2a3014490cd18a Dave Airlie 2021-02-05 1002 fb->dev = dev;
2a3014490cd18a Dave Airlie 2021-02-05 1003
2a3014490cd18a Dave Airlie 2021-02-05 1004 val = intel_de_read(dev_priv, DSPCNTR(i9xx_plane));
2a3014490cd18a Dave Airlie 2021-02-05 1005
005e95377249cb Matt Roper 2021-03-19 1006 if (DISPLAY_VER(dev_priv) >= 4) {
428cb15d5b0031 Ville Syrjälä 2022-01-21 1007 if (val & DISP_TILED) {
2a3014490cd18a Dave Airlie 2021-02-05 1008 plane_config->tiling = I915_TILING_X;
2a3014490cd18a Dave Airlie 2021-02-05 1009 fb->modifier = I915_FORMAT_MOD_X_TILED;
2a3014490cd18a Dave Airlie 2021-02-05 1010 }
2a3014490cd18a Dave Airlie 2021-02-05 1011
428cb15d5b0031 Ville Syrjälä 2022-01-21 1012 if (val & DISP_ROTATE_180)
2a3014490cd18a Dave Airlie 2021-02-05 1013 plane_config->rotation = DRM_MODE_ROTATE_180;
2a3014490cd18a Dave Airlie 2021-02-05 1014 }
2a3014490cd18a Dave Airlie 2021-02-05 1015
2a3014490cd18a Dave Airlie 2021-02-05 1016 if (IS_CHERRYVIEW(dev_priv) && pipe == PIPE_B &&
428cb15d5b0031 Ville Syrjälä 2022-01-21 1017 val & DISP_MIRROR)
2a3014490cd18a Dave Airlie 2021-02-05 1018 plane_config->rotation |= DRM_MODE_REFLECT_X;
2a3014490cd18a Dave Airlie 2021-02-05 1019
428cb15d5b0031 Ville Syrjälä 2022-01-21 1020 pixel_format = val & DISP_FORMAT_MASK;
2a3014490cd18a Dave Airlie 2021-02-05 1021 fourcc = i9xx_format_to_fourcc(pixel_format);
2a3014490cd18a Dave Airlie 2021-02-05 1022 fb->format = drm_format_info(fourcc);
2a3014490cd18a Dave Airlie 2021-02-05 1023
2a3014490cd18a Dave Airlie 2021-02-05 1024 if (IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv)) {
2a3014490cd18a Dave Airlie 2021-02-05 1025 offset = intel_de_read(dev_priv, DSPOFFSET(i9xx_plane));
428cb15d5b0031 Ville Syrjälä 2022-01-21 1026 base = intel_de_read(dev_priv, DSPSURF(i9xx_plane)) & DISP_ADDR_MASK;
005e95377249cb Matt Roper 2021-03-19 @1027 } else if (DISPLAY_VER(dev_priv) >= 4) {
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
^ permalink raw reply [flat|nested] 12+ messages in thread
* Re: [Intel-gfx] [PATCH 01/15] drm/i915/plane: warn on non-zero plane offset
2023-05-26 16:37 ` [Intel-gfx] [PATCH 01/15] drm/i915/plane: warn on non-zero plane offset Jani Nikula
@ 2023-05-27 1:50 ` kernel test robot
2023-05-27 0:27 ` kernel test robot
` (2 subsequent siblings)
3 siblings, 0 replies; 12+ messages in thread
From: kernel test robot @ 2023-05-27 1:50 UTC (permalink / raw)
To: Jani Nikula, intel-gfx; +Cc: jani.nikula, llvm, oe-kbuild-all
Hi Jani,
kernel test robot noticed the following build warnings:
[auto build test WARNING on drm-tip/drm-tip]
url: https://github.com/intel-lab-lkp/linux/commits/Jani-Nikula/drm-i915-plane-warn-on-non-zero-plane-offset/20230527-003951
base: git://anongit.freedesktop.org/drm/drm-tip drm-tip
patch link: https://lore.kernel.org/r/0988d237e56c56568f035053da8e2e2308a17d3a.1685119007.git.jani.nikula%40intel.com
patch subject: [Intel-gfx] [PATCH 01/15] drm/i915/plane: warn on non-zero plane offset
config: i386-randconfig-i076-20230526 (https://download.01.org/0day-ci/archive/20230527/202305270919.ttCZVsAy-lkp@intel.com/config)
compiler: clang version 14.0.6 (https://github.com/llvm/llvm-project f28c006a5895fc0e329fe15fead81e37457cb1d1)
reproduce (this is a W=1 build):
mkdir -p ~/bin
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# https://github.com/intel-lab-lkp/linux/commit/40c3d9e9221e230ab6f0b2e3051b6c4566a1e852
git remote add linux-review https://github.com/intel-lab-lkp/linux
git fetch --no-tags linux-review Jani-Nikula/drm-i915-plane-warn-on-non-zero-plane-offset/20230527-003951
git checkout 40c3d9e9221e230ab6f0b2e3051b6c4566a1e852
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang ~/bin/make.cross W=1 O=build_dir ARCH=i386 olddefconfig
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang ~/bin/make.cross W=1 O=build_dir ARCH=i386 SHELL=/bin/bash drivers/gpu/drm/i915/
If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202305270919.ttCZVsAy-lkp@intel.com/
All warnings (new ones prefixed by >>):
>> drivers/gpu/drm/i915/display/i9xx_plane.c:1027:13: warning: variable 'offset' is used uninitialized whenever 'if' condition is false [-Wsometimes-uninitialized]
} else if (DISPLAY_VER(dev_priv) >= 4) {
^~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/i915/i915_drv.h:433:27: note: expanded from macro 'DISPLAY_VER'
#define DISPLAY_VER(i915) (DISPLAY_RUNTIME_INFO(i915)->ip.ver)
^
drivers/gpu/drm/i915/display/i9xx_plane.c:1040:30: note: uninitialized use occurs here
drm_WARN_ON(&dev_priv->drm, offset != 0);
^~~~~~
include/drm/drm_print.h:630:19: note: expanded from macro 'drm_WARN_ON'
drm_WARN((drm), (x), "%s", \
^
include/drm/drm_print.h:620:7: note: expanded from macro 'drm_WARN'
WARN(condition, "%s %s: " format, \
^~~~~~~~~
include/asm-generic/bug.h:131:25: note: expanded from macro 'WARN'
int __ret_warn_on = !!(condition); \
^~~~~~~~~
drivers/gpu/drm/i915/display/i9xx_plane.c:1027:9: note: remove the 'if' if its condition is always true
} else if (DISPLAY_VER(dev_priv) >= 4) {
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/i915/display/i9xx_plane.c:983:23: note: initialize the variable 'offset' to silence this warning
u32 val, base, offset;
^
= 0
1 warning generated.
vim +1027 drivers/gpu/drm/i915/display/i9xx_plane.c
2a3014490cd18a Dave Airlie 2021-02-05 973
2a3014490cd18a Dave Airlie 2021-02-05 974 void
2a3014490cd18a Dave Airlie 2021-02-05 975 i9xx_get_initial_plane_config(struct intel_crtc *crtc,
2a3014490cd18a Dave Airlie 2021-02-05 976 struct intel_initial_plane_config *plane_config)
2a3014490cd18a Dave Airlie 2021-02-05 977 {
2a3014490cd18a Dave Airlie 2021-02-05 978 struct drm_device *dev = crtc->base.dev;
2a3014490cd18a Dave Airlie 2021-02-05 979 struct drm_i915_private *dev_priv = to_i915(dev);
2a3014490cd18a Dave Airlie 2021-02-05 980 struct intel_plane *plane = to_intel_plane(crtc->base.primary);
2a3014490cd18a Dave Airlie 2021-02-05 981 enum i9xx_plane_id i9xx_plane = plane->i9xx_plane;
2a3014490cd18a Dave Airlie 2021-02-05 982 enum pipe pipe;
2a3014490cd18a Dave Airlie 2021-02-05 983 u32 val, base, offset;
2a3014490cd18a Dave Airlie 2021-02-05 984 int fourcc, pixel_format;
2a3014490cd18a Dave Airlie 2021-02-05 985 unsigned int aligned_height;
2a3014490cd18a Dave Airlie 2021-02-05 986 struct drm_framebuffer *fb;
2a3014490cd18a Dave Airlie 2021-02-05 987 struct intel_framebuffer *intel_fb;
2a3014490cd18a Dave Airlie 2021-02-05 988
2a3014490cd18a Dave Airlie 2021-02-05 989 if (!plane->get_hw_state(plane, &pipe))
2a3014490cd18a Dave Airlie 2021-02-05 990 return;
2a3014490cd18a Dave Airlie 2021-02-05 991
2a3014490cd18a Dave Airlie 2021-02-05 992 drm_WARN_ON(dev, pipe != crtc->pipe);
2a3014490cd18a Dave Airlie 2021-02-05 993
2a3014490cd18a Dave Airlie 2021-02-05 994 intel_fb = kzalloc(sizeof(*intel_fb), GFP_KERNEL);
2a3014490cd18a Dave Airlie 2021-02-05 995 if (!intel_fb) {
2a3014490cd18a Dave Airlie 2021-02-05 996 drm_dbg_kms(&dev_priv->drm, "failed to alloc fb\n");
2a3014490cd18a Dave Airlie 2021-02-05 997 return;
2a3014490cd18a Dave Airlie 2021-02-05 998 }
2a3014490cd18a Dave Airlie 2021-02-05 999
2a3014490cd18a Dave Airlie 2021-02-05 1000 fb = &intel_fb->base;
2a3014490cd18a Dave Airlie 2021-02-05 1001
2a3014490cd18a Dave Airlie 2021-02-05 1002 fb->dev = dev;
2a3014490cd18a Dave Airlie 2021-02-05 1003
2a3014490cd18a Dave Airlie 2021-02-05 1004 val = intel_de_read(dev_priv, DSPCNTR(i9xx_plane));
2a3014490cd18a Dave Airlie 2021-02-05 1005
005e95377249cb Matt Roper 2021-03-19 1006 if (DISPLAY_VER(dev_priv) >= 4) {
428cb15d5b0031 Ville Syrjälä 2022-01-21 1007 if (val & DISP_TILED) {
2a3014490cd18a Dave Airlie 2021-02-05 1008 plane_config->tiling = I915_TILING_X;
2a3014490cd18a Dave Airlie 2021-02-05 1009 fb->modifier = I915_FORMAT_MOD_X_TILED;
2a3014490cd18a Dave Airlie 2021-02-05 1010 }
2a3014490cd18a Dave Airlie 2021-02-05 1011
428cb15d5b0031 Ville Syrjälä 2022-01-21 1012 if (val & DISP_ROTATE_180)
2a3014490cd18a Dave Airlie 2021-02-05 1013 plane_config->rotation = DRM_MODE_ROTATE_180;
2a3014490cd18a Dave Airlie 2021-02-05 1014 }
2a3014490cd18a Dave Airlie 2021-02-05 1015
2a3014490cd18a Dave Airlie 2021-02-05 1016 if (IS_CHERRYVIEW(dev_priv) && pipe == PIPE_B &&
428cb15d5b0031 Ville Syrjälä 2022-01-21 1017 val & DISP_MIRROR)
2a3014490cd18a Dave Airlie 2021-02-05 1018 plane_config->rotation |= DRM_MODE_REFLECT_X;
2a3014490cd18a Dave Airlie 2021-02-05 1019
428cb15d5b0031 Ville Syrjälä 2022-01-21 1020 pixel_format = val & DISP_FORMAT_MASK;
2a3014490cd18a Dave Airlie 2021-02-05 1021 fourcc = i9xx_format_to_fourcc(pixel_format);
2a3014490cd18a Dave Airlie 2021-02-05 1022 fb->format = drm_format_info(fourcc);
2a3014490cd18a Dave Airlie 2021-02-05 1023
2a3014490cd18a Dave Airlie 2021-02-05 1024 if (IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv)) {
2a3014490cd18a Dave Airlie 2021-02-05 1025 offset = intel_de_read(dev_priv, DSPOFFSET(i9xx_plane));
428cb15d5b0031 Ville Syrjälä 2022-01-21 1026 base = intel_de_read(dev_priv, DSPSURF(i9xx_plane)) & DISP_ADDR_MASK;
005e95377249cb Matt Roper 2021-03-19 @1027 } else if (DISPLAY_VER(dev_priv) >= 4) {
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
^ permalink raw reply [flat|nested] 12+ messages in thread* Re: [Intel-gfx] [PATCH 01/15] drm/i915/plane: warn on non-zero plane offset
@ 2023-05-27 1:50 ` kernel test robot
0 siblings, 0 replies; 12+ messages in thread
From: kernel test robot @ 2023-05-27 1:50 UTC (permalink / raw)
To: Jani Nikula, intel-gfx; +Cc: llvm, oe-kbuild-all, jani.nikula
Hi Jani,
kernel test robot noticed the following build warnings:
[auto build test WARNING on drm-tip/drm-tip]
url: https://github.com/intel-lab-lkp/linux/commits/Jani-Nikula/drm-i915-plane-warn-on-non-zero-plane-offset/20230527-003951
base: git://anongit.freedesktop.org/drm/drm-tip drm-tip
patch link: https://lore.kernel.org/r/0988d237e56c56568f035053da8e2e2308a17d3a.1685119007.git.jani.nikula%40intel.com
patch subject: [Intel-gfx] [PATCH 01/15] drm/i915/plane: warn on non-zero plane offset
config: i386-randconfig-i076-20230526 (https://download.01.org/0day-ci/archive/20230527/202305270919.ttCZVsAy-lkp@intel.com/config)
compiler: clang version 14.0.6 (https://github.com/llvm/llvm-project f28c006a5895fc0e329fe15fead81e37457cb1d1)
reproduce (this is a W=1 build):
mkdir -p ~/bin
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# https://github.com/intel-lab-lkp/linux/commit/40c3d9e9221e230ab6f0b2e3051b6c4566a1e852
git remote add linux-review https://github.com/intel-lab-lkp/linux
git fetch --no-tags linux-review Jani-Nikula/drm-i915-plane-warn-on-non-zero-plane-offset/20230527-003951
git checkout 40c3d9e9221e230ab6f0b2e3051b6c4566a1e852
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang ~/bin/make.cross W=1 O=build_dir ARCH=i386 olddefconfig
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang ~/bin/make.cross W=1 O=build_dir ARCH=i386 SHELL=/bin/bash drivers/gpu/drm/i915/
If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202305270919.ttCZVsAy-lkp@intel.com/
All warnings (new ones prefixed by >>):
>> drivers/gpu/drm/i915/display/i9xx_plane.c:1027:13: warning: variable 'offset' is used uninitialized whenever 'if' condition is false [-Wsometimes-uninitialized]
} else if (DISPLAY_VER(dev_priv) >= 4) {
^~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/i915/i915_drv.h:433:27: note: expanded from macro 'DISPLAY_VER'
#define DISPLAY_VER(i915) (DISPLAY_RUNTIME_INFO(i915)->ip.ver)
^
drivers/gpu/drm/i915/display/i9xx_plane.c:1040:30: note: uninitialized use occurs here
drm_WARN_ON(&dev_priv->drm, offset != 0);
^~~~~~
include/drm/drm_print.h:630:19: note: expanded from macro 'drm_WARN_ON'
drm_WARN((drm), (x), "%s", \
^
include/drm/drm_print.h:620:7: note: expanded from macro 'drm_WARN'
WARN(condition, "%s %s: " format, \
^~~~~~~~~
include/asm-generic/bug.h:131:25: note: expanded from macro 'WARN'
int __ret_warn_on = !!(condition); \
^~~~~~~~~
drivers/gpu/drm/i915/display/i9xx_plane.c:1027:9: note: remove the 'if' if its condition is always true
} else if (DISPLAY_VER(dev_priv) >= 4) {
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/i915/display/i9xx_plane.c:983:23: note: initialize the variable 'offset' to silence this warning
u32 val, base, offset;
^
= 0
1 warning generated.
vim +1027 drivers/gpu/drm/i915/display/i9xx_plane.c
2a3014490cd18a Dave Airlie 2021-02-05 973
2a3014490cd18a Dave Airlie 2021-02-05 974 void
2a3014490cd18a Dave Airlie 2021-02-05 975 i9xx_get_initial_plane_config(struct intel_crtc *crtc,
2a3014490cd18a Dave Airlie 2021-02-05 976 struct intel_initial_plane_config *plane_config)
2a3014490cd18a Dave Airlie 2021-02-05 977 {
2a3014490cd18a Dave Airlie 2021-02-05 978 struct drm_device *dev = crtc->base.dev;
2a3014490cd18a Dave Airlie 2021-02-05 979 struct drm_i915_private *dev_priv = to_i915(dev);
2a3014490cd18a Dave Airlie 2021-02-05 980 struct intel_plane *plane = to_intel_plane(crtc->base.primary);
2a3014490cd18a Dave Airlie 2021-02-05 981 enum i9xx_plane_id i9xx_plane = plane->i9xx_plane;
2a3014490cd18a Dave Airlie 2021-02-05 982 enum pipe pipe;
2a3014490cd18a Dave Airlie 2021-02-05 983 u32 val, base, offset;
2a3014490cd18a Dave Airlie 2021-02-05 984 int fourcc, pixel_format;
2a3014490cd18a Dave Airlie 2021-02-05 985 unsigned int aligned_height;
2a3014490cd18a Dave Airlie 2021-02-05 986 struct drm_framebuffer *fb;
2a3014490cd18a Dave Airlie 2021-02-05 987 struct intel_framebuffer *intel_fb;
2a3014490cd18a Dave Airlie 2021-02-05 988
2a3014490cd18a Dave Airlie 2021-02-05 989 if (!plane->get_hw_state(plane, &pipe))
2a3014490cd18a Dave Airlie 2021-02-05 990 return;
2a3014490cd18a Dave Airlie 2021-02-05 991
2a3014490cd18a Dave Airlie 2021-02-05 992 drm_WARN_ON(dev, pipe != crtc->pipe);
2a3014490cd18a Dave Airlie 2021-02-05 993
2a3014490cd18a Dave Airlie 2021-02-05 994 intel_fb = kzalloc(sizeof(*intel_fb), GFP_KERNEL);
2a3014490cd18a Dave Airlie 2021-02-05 995 if (!intel_fb) {
2a3014490cd18a Dave Airlie 2021-02-05 996 drm_dbg_kms(&dev_priv->drm, "failed to alloc fb\n");
2a3014490cd18a Dave Airlie 2021-02-05 997 return;
2a3014490cd18a Dave Airlie 2021-02-05 998 }
2a3014490cd18a Dave Airlie 2021-02-05 999
2a3014490cd18a Dave Airlie 2021-02-05 1000 fb = &intel_fb->base;
2a3014490cd18a Dave Airlie 2021-02-05 1001
2a3014490cd18a Dave Airlie 2021-02-05 1002 fb->dev = dev;
2a3014490cd18a Dave Airlie 2021-02-05 1003
2a3014490cd18a Dave Airlie 2021-02-05 1004 val = intel_de_read(dev_priv, DSPCNTR(i9xx_plane));
2a3014490cd18a Dave Airlie 2021-02-05 1005
005e95377249cb Matt Roper 2021-03-19 1006 if (DISPLAY_VER(dev_priv) >= 4) {
428cb15d5b0031 Ville Syrjälä 2022-01-21 1007 if (val & DISP_TILED) {
2a3014490cd18a Dave Airlie 2021-02-05 1008 plane_config->tiling = I915_TILING_X;
2a3014490cd18a Dave Airlie 2021-02-05 1009 fb->modifier = I915_FORMAT_MOD_X_TILED;
2a3014490cd18a Dave Airlie 2021-02-05 1010 }
2a3014490cd18a Dave Airlie 2021-02-05 1011
428cb15d5b0031 Ville Syrjälä 2022-01-21 1012 if (val & DISP_ROTATE_180)
2a3014490cd18a Dave Airlie 2021-02-05 1013 plane_config->rotation = DRM_MODE_ROTATE_180;
2a3014490cd18a Dave Airlie 2021-02-05 1014 }
2a3014490cd18a Dave Airlie 2021-02-05 1015
2a3014490cd18a Dave Airlie 2021-02-05 1016 if (IS_CHERRYVIEW(dev_priv) && pipe == PIPE_B &&
428cb15d5b0031 Ville Syrjälä 2022-01-21 1017 val & DISP_MIRROR)
2a3014490cd18a Dave Airlie 2021-02-05 1018 plane_config->rotation |= DRM_MODE_REFLECT_X;
2a3014490cd18a Dave Airlie 2021-02-05 1019
428cb15d5b0031 Ville Syrjälä 2022-01-21 1020 pixel_format = val & DISP_FORMAT_MASK;
2a3014490cd18a Dave Airlie 2021-02-05 1021 fourcc = i9xx_format_to_fourcc(pixel_format);
2a3014490cd18a Dave Airlie 2021-02-05 1022 fb->format = drm_format_info(fourcc);
2a3014490cd18a Dave Airlie 2021-02-05 1023
2a3014490cd18a Dave Airlie 2021-02-05 1024 if (IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv)) {
2a3014490cd18a Dave Airlie 2021-02-05 1025 offset = intel_de_read(dev_priv, DSPOFFSET(i9xx_plane));
428cb15d5b0031 Ville Syrjälä 2022-01-21 1026 base = intel_de_read(dev_priv, DSPSURF(i9xx_plane)) & DISP_ADDR_MASK;
005e95377249cb Matt Roper 2021-03-19 @1027 } else if (DISPLAY_VER(dev_priv) >= 4) {
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
^ permalink raw reply [flat|nested] 12+ messages in thread
* Re: [Intel-gfx] [PATCH 01/15] drm/i915/plane: warn on non-zero plane offset
2023-05-26 16:37 ` [Intel-gfx] [PATCH 01/15] drm/i915/plane: warn on non-zero plane offset Jani Nikula
@ 2023-05-29 9:24 ` Dan Carpenter
2023-05-27 0:27 ` kernel test robot
` (2 subsequent siblings)
3 siblings, 0 replies; 12+ messages in thread
From: Dan Carpenter @ 2023-05-29 9:24 UTC (permalink / raw)
To: oe-kbuild, Jani Nikula, intel-gfx; +Cc: lkp, oe-kbuild-all, jani.nikula
Hi Jani,
kernel test robot noticed the following build warnings:
url: https://github.com/intel-lab-lkp/linux/commits/Jani-Nikula/drm-i915-plane-warn-on-non-zero-plane-offset/20230527-003951
base: git://anongit.freedesktop.org/drm/drm-tip drm-tip
patch link: https://lore.kernel.org/r/0988d237e56c56568f035053da8e2e2308a17d3a.1685119007.git.jani.nikula%40intel.com
patch subject: [Intel-gfx] [PATCH 01/15] drm/i915/plane: warn on non-zero plane offset
config: x86_64-randconfig-m031-20230526 (https://download.01.org/0day-ci/archive/20230528/202305280453.8yzCMS2i-lkp@intel.com/config)
compiler: gcc-11 (Debian 11.3.0-12) 11.3.0
If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>
| Reported-by: Dan Carpenter <error27@gmail.com>
| Closes: https://lore.kernel.org/r/202305280453.8yzCMS2i-lkp@intel.com/
smatch warnings:
drivers/gpu/drm/i915/display/i9xx_plane.c:1040 i9xx_get_initial_plane_config() error: uninitialized symbol 'offset'.
vim +/offset +1040 drivers/gpu/drm/i915/display/i9xx_plane.c
2a3014490cd18a Dave Airlie 2021-02-05 974 void
2a3014490cd18a Dave Airlie 2021-02-05 975 i9xx_get_initial_plane_config(struct intel_crtc *crtc,
2a3014490cd18a Dave Airlie 2021-02-05 976 struct intel_initial_plane_config *plane_config)
2a3014490cd18a Dave Airlie 2021-02-05 977 {
2a3014490cd18a Dave Airlie 2021-02-05 978 struct drm_device *dev = crtc->base.dev;
2a3014490cd18a Dave Airlie 2021-02-05 979 struct drm_i915_private *dev_priv = to_i915(dev);
2a3014490cd18a Dave Airlie 2021-02-05 980 struct intel_plane *plane = to_intel_plane(crtc->base.primary);
2a3014490cd18a Dave Airlie 2021-02-05 981 enum i9xx_plane_id i9xx_plane = plane->i9xx_plane;
2a3014490cd18a Dave Airlie 2021-02-05 982 enum pipe pipe;
2a3014490cd18a Dave Airlie 2021-02-05 983 u32 val, base, offset;
2a3014490cd18a Dave Airlie 2021-02-05 984 int fourcc, pixel_format;
2a3014490cd18a Dave Airlie 2021-02-05 985 unsigned int aligned_height;
2a3014490cd18a Dave Airlie 2021-02-05 986 struct drm_framebuffer *fb;
2a3014490cd18a Dave Airlie 2021-02-05 987 struct intel_framebuffer *intel_fb;
2a3014490cd18a Dave Airlie 2021-02-05 988
2a3014490cd18a Dave Airlie 2021-02-05 989 if (!plane->get_hw_state(plane, &pipe))
2a3014490cd18a Dave Airlie 2021-02-05 990 return;
2a3014490cd18a Dave Airlie 2021-02-05 991
2a3014490cd18a Dave Airlie 2021-02-05 992 drm_WARN_ON(dev, pipe != crtc->pipe);
2a3014490cd18a Dave Airlie 2021-02-05 993
2a3014490cd18a Dave Airlie 2021-02-05 994 intel_fb = kzalloc(sizeof(*intel_fb), GFP_KERNEL);
2a3014490cd18a Dave Airlie 2021-02-05 995 if (!intel_fb) {
2a3014490cd18a Dave Airlie 2021-02-05 996 drm_dbg_kms(&dev_priv->drm, "failed to alloc fb\n");
2a3014490cd18a Dave Airlie 2021-02-05 997 return;
2a3014490cd18a Dave Airlie 2021-02-05 998 }
2a3014490cd18a Dave Airlie 2021-02-05 999
2a3014490cd18a Dave Airlie 2021-02-05 1000 fb = &intel_fb->base;
2a3014490cd18a Dave Airlie 2021-02-05 1001
2a3014490cd18a Dave Airlie 2021-02-05 1002 fb->dev = dev;
2a3014490cd18a Dave Airlie 2021-02-05 1003
2a3014490cd18a Dave Airlie 2021-02-05 1004 val = intel_de_read(dev_priv, DSPCNTR(i9xx_plane));
2a3014490cd18a Dave Airlie 2021-02-05 1005
005e95377249cb Matt Roper 2021-03-19 1006 if (DISPLAY_VER(dev_priv) >= 4) {
428cb15d5b0031 Ville Syrjälä 2022-01-21 1007 if (val & DISP_TILED) {
2a3014490cd18a Dave Airlie 2021-02-05 1008 plane_config->tiling = I915_TILING_X;
2a3014490cd18a Dave Airlie 2021-02-05 1009 fb->modifier = I915_FORMAT_MOD_X_TILED;
2a3014490cd18a Dave Airlie 2021-02-05 1010 }
2a3014490cd18a Dave Airlie 2021-02-05 1011
428cb15d5b0031 Ville Syrjälä 2022-01-21 1012 if (val & DISP_ROTATE_180)
2a3014490cd18a Dave Airlie 2021-02-05 1013 plane_config->rotation = DRM_MODE_ROTATE_180;
2a3014490cd18a Dave Airlie 2021-02-05 1014 }
2a3014490cd18a Dave Airlie 2021-02-05 1015
2a3014490cd18a Dave Airlie 2021-02-05 1016 if (IS_CHERRYVIEW(dev_priv) && pipe == PIPE_B &&
428cb15d5b0031 Ville Syrjälä 2022-01-21 1017 val & DISP_MIRROR)
2a3014490cd18a Dave Airlie 2021-02-05 1018 plane_config->rotation |= DRM_MODE_REFLECT_X;
2a3014490cd18a Dave Airlie 2021-02-05 1019
428cb15d5b0031 Ville Syrjälä 2022-01-21 1020 pixel_format = val & DISP_FORMAT_MASK;
2a3014490cd18a Dave Airlie 2021-02-05 1021 fourcc = i9xx_format_to_fourcc(pixel_format);
2a3014490cd18a Dave Airlie 2021-02-05 1022 fb->format = drm_format_info(fourcc);
2a3014490cd18a Dave Airlie 2021-02-05 1023
2a3014490cd18a Dave Airlie 2021-02-05 1024 if (IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv)) {
2a3014490cd18a Dave Airlie 2021-02-05 1025 offset = intel_de_read(dev_priv, DSPOFFSET(i9xx_plane));
428cb15d5b0031 Ville Syrjälä 2022-01-21 1026 base = intel_de_read(dev_priv, DSPSURF(i9xx_plane)) & DISP_ADDR_MASK;
005e95377249cb Matt Roper 2021-03-19 1027 } else if (DISPLAY_VER(dev_priv) >= 4) {
2a3014490cd18a Dave Airlie 2021-02-05 1028 if (plane_config->tiling)
2a3014490cd18a Dave Airlie 2021-02-05 1029 offset = intel_de_read(dev_priv,
2a3014490cd18a Dave Airlie 2021-02-05 1030 DSPTILEOFF(i9xx_plane));
2a3014490cd18a Dave Airlie 2021-02-05 1031 else
2a3014490cd18a Dave Airlie 2021-02-05 1032 offset = intel_de_read(dev_priv,
2a3014490cd18a Dave Airlie 2021-02-05 1033 DSPLINOFF(i9xx_plane));
428cb15d5b0031 Ville Syrjälä 2022-01-21 1034 base = intel_de_read(dev_priv, DSPSURF(i9xx_plane)) & DISP_ADDR_MASK;
2a3014490cd18a Dave Airlie 2021-02-05 1035 } else {
2a3014490cd18a Dave Airlie 2021-02-05 1036 base = intel_de_read(dev_priv, DSPADDR(i9xx_plane));
offset not initialized on this path.
2a3014490cd18a Dave Airlie 2021-02-05 1037 }
2a3014490cd18a Dave Airlie 2021-02-05 1038 plane_config->base = base;
2a3014490cd18a Dave Airlie 2021-02-05 1039
40c3d9e9221e23 Jani Nikula 2023-05-26 @1040 drm_WARN_ON(&dev_priv->drm, offset != 0);
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
^ permalink raw reply [flat|nested] 12+ messages in thread* Re: [Intel-gfx] [PATCH 01/15] drm/i915/plane: warn on non-zero plane offset
@ 2023-05-29 9:24 ` Dan Carpenter
0 siblings, 0 replies; 12+ messages in thread
From: Dan Carpenter @ 2023-05-29 9:24 UTC (permalink / raw)
To: oe-kbuild, Jani Nikula, intel-gfx; +Cc: jani.nikula, oe-kbuild-all
Hi Jani,
kernel test robot noticed the following build warnings:
url: https://github.com/intel-lab-lkp/linux/commits/Jani-Nikula/drm-i915-plane-warn-on-non-zero-plane-offset/20230527-003951
base: git://anongit.freedesktop.org/drm/drm-tip drm-tip
patch link: https://lore.kernel.org/r/0988d237e56c56568f035053da8e2e2308a17d3a.1685119007.git.jani.nikula%40intel.com
patch subject: [Intel-gfx] [PATCH 01/15] drm/i915/plane: warn on non-zero plane offset
config: x86_64-randconfig-m031-20230526 (https://download.01.org/0day-ci/archive/20230528/202305280453.8yzCMS2i-lkp@intel.com/config)
compiler: gcc-11 (Debian 11.3.0-12) 11.3.0
If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>
| Reported-by: Dan Carpenter <error27@gmail.com>
| Closes: https://lore.kernel.org/r/202305280453.8yzCMS2i-lkp@intel.com/
smatch warnings:
drivers/gpu/drm/i915/display/i9xx_plane.c:1040 i9xx_get_initial_plane_config() error: uninitialized symbol 'offset'.
vim +/offset +1040 drivers/gpu/drm/i915/display/i9xx_plane.c
2a3014490cd18a Dave Airlie 2021-02-05 974 void
2a3014490cd18a Dave Airlie 2021-02-05 975 i9xx_get_initial_plane_config(struct intel_crtc *crtc,
2a3014490cd18a Dave Airlie 2021-02-05 976 struct intel_initial_plane_config *plane_config)
2a3014490cd18a Dave Airlie 2021-02-05 977 {
2a3014490cd18a Dave Airlie 2021-02-05 978 struct drm_device *dev = crtc->base.dev;
2a3014490cd18a Dave Airlie 2021-02-05 979 struct drm_i915_private *dev_priv = to_i915(dev);
2a3014490cd18a Dave Airlie 2021-02-05 980 struct intel_plane *plane = to_intel_plane(crtc->base.primary);
2a3014490cd18a Dave Airlie 2021-02-05 981 enum i9xx_plane_id i9xx_plane = plane->i9xx_plane;
2a3014490cd18a Dave Airlie 2021-02-05 982 enum pipe pipe;
2a3014490cd18a Dave Airlie 2021-02-05 983 u32 val, base, offset;
2a3014490cd18a Dave Airlie 2021-02-05 984 int fourcc, pixel_format;
2a3014490cd18a Dave Airlie 2021-02-05 985 unsigned int aligned_height;
2a3014490cd18a Dave Airlie 2021-02-05 986 struct drm_framebuffer *fb;
2a3014490cd18a Dave Airlie 2021-02-05 987 struct intel_framebuffer *intel_fb;
2a3014490cd18a Dave Airlie 2021-02-05 988
2a3014490cd18a Dave Airlie 2021-02-05 989 if (!plane->get_hw_state(plane, &pipe))
2a3014490cd18a Dave Airlie 2021-02-05 990 return;
2a3014490cd18a Dave Airlie 2021-02-05 991
2a3014490cd18a Dave Airlie 2021-02-05 992 drm_WARN_ON(dev, pipe != crtc->pipe);
2a3014490cd18a Dave Airlie 2021-02-05 993
2a3014490cd18a Dave Airlie 2021-02-05 994 intel_fb = kzalloc(sizeof(*intel_fb), GFP_KERNEL);
2a3014490cd18a Dave Airlie 2021-02-05 995 if (!intel_fb) {
2a3014490cd18a Dave Airlie 2021-02-05 996 drm_dbg_kms(&dev_priv->drm, "failed to alloc fb\n");
2a3014490cd18a Dave Airlie 2021-02-05 997 return;
2a3014490cd18a Dave Airlie 2021-02-05 998 }
2a3014490cd18a Dave Airlie 2021-02-05 999
2a3014490cd18a Dave Airlie 2021-02-05 1000 fb = &intel_fb->base;
2a3014490cd18a Dave Airlie 2021-02-05 1001
2a3014490cd18a Dave Airlie 2021-02-05 1002 fb->dev = dev;
2a3014490cd18a Dave Airlie 2021-02-05 1003
2a3014490cd18a Dave Airlie 2021-02-05 1004 val = intel_de_read(dev_priv, DSPCNTR(i9xx_plane));
2a3014490cd18a Dave Airlie 2021-02-05 1005
005e95377249cb Matt Roper 2021-03-19 1006 if (DISPLAY_VER(dev_priv) >= 4) {
428cb15d5b0031 Ville Syrjälä 2022-01-21 1007 if (val & DISP_TILED) {
2a3014490cd18a Dave Airlie 2021-02-05 1008 plane_config->tiling = I915_TILING_X;
2a3014490cd18a Dave Airlie 2021-02-05 1009 fb->modifier = I915_FORMAT_MOD_X_TILED;
2a3014490cd18a Dave Airlie 2021-02-05 1010 }
2a3014490cd18a Dave Airlie 2021-02-05 1011
428cb15d5b0031 Ville Syrjälä 2022-01-21 1012 if (val & DISP_ROTATE_180)
2a3014490cd18a Dave Airlie 2021-02-05 1013 plane_config->rotation = DRM_MODE_ROTATE_180;
2a3014490cd18a Dave Airlie 2021-02-05 1014 }
2a3014490cd18a Dave Airlie 2021-02-05 1015
2a3014490cd18a Dave Airlie 2021-02-05 1016 if (IS_CHERRYVIEW(dev_priv) && pipe == PIPE_B &&
428cb15d5b0031 Ville Syrjälä 2022-01-21 1017 val & DISP_MIRROR)
2a3014490cd18a Dave Airlie 2021-02-05 1018 plane_config->rotation |= DRM_MODE_REFLECT_X;
2a3014490cd18a Dave Airlie 2021-02-05 1019
428cb15d5b0031 Ville Syrjälä 2022-01-21 1020 pixel_format = val & DISP_FORMAT_MASK;
2a3014490cd18a Dave Airlie 2021-02-05 1021 fourcc = i9xx_format_to_fourcc(pixel_format);
2a3014490cd18a Dave Airlie 2021-02-05 1022 fb->format = drm_format_info(fourcc);
2a3014490cd18a Dave Airlie 2021-02-05 1023
2a3014490cd18a Dave Airlie 2021-02-05 1024 if (IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv)) {
2a3014490cd18a Dave Airlie 2021-02-05 1025 offset = intel_de_read(dev_priv, DSPOFFSET(i9xx_plane));
428cb15d5b0031 Ville Syrjälä 2022-01-21 1026 base = intel_de_read(dev_priv, DSPSURF(i9xx_plane)) & DISP_ADDR_MASK;
005e95377249cb Matt Roper 2021-03-19 1027 } else if (DISPLAY_VER(dev_priv) >= 4) {
2a3014490cd18a Dave Airlie 2021-02-05 1028 if (plane_config->tiling)
2a3014490cd18a Dave Airlie 2021-02-05 1029 offset = intel_de_read(dev_priv,
2a3014490cd18a Dave Airlie 2021-02-05 1030 DSPTILEOFF(i9xx_plane));
2a3014490cd18a Dave Airlie 2021-02-05 1031 else
2a3014490cd18a Dave Airlie 2021-02-05 1032 offset = intel_de_read(dev_priv,
2a3014490cd18a Dave Airlie 2021-02-05 1033 DSPLINOFF(i9xx_plane));
428cb15d5b0031 Ville Syrjälä 2022-01-21 1034 base = intel_de_read(dev_priv, DSPSURF(i9xx_plane)) & DISP_ADDR_MASK;
2a3014490cd18a Dave Airlie 2021-02-05 1035 } else {
2a3014490cd18a Dave Airlie 2021-02-05 1036 base = intel_de_read(dev_priv, DSPADDR(i9xx_plane));
offset not initialized on this path.
2a3014490cd18a Dave Airlie 2021-02-05 1037 }
2a3014490cd18a Dave Airlie 2021-02-05 1038 plane_config->base = base;
2a3014490cd18a Dave Airlie 2021-02-05 1039
40c3d9e9221e23 Jani Nikula 2023-05-26 @1040 drm_WARN_ON(&dev_priv->drm, offset != 0);
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
^ permalink raw reply [flat|nested] 12+ messages in thread* Re: [Intel-gfx] [PATCH 01/15] drm/i915/plane: warn on non-zero plane offset
2023-05-29 9:24 ` Dan Carpenter
@ 2023-05-29 10:04 ` Jani Nikula
-1 siblings, 0 replies; 12+ messages in thread
From: Jani Nikula @ 2023-05-29 10:04 UTC (permalink / raw)
To: Dan Carpenter, oe-kbuild, intel-gfx; +Cc: oe-kbuild-all
On Mon, 29 May 2023, Dan Carpenter <dan.carpenter@linaro.org> wrote:
> Hi Jani,
>
> kernel test robot noticed the following build warnings:
Thanks, v2 already on the list:
https://patchwork.freedesktop.org/patch/msgid/20230526172218.1597394-1-jani.nikula@intel.com
>
> url: https://github.com/intel-lab-lkp/linux/commits/Jani-Nikula/drm-i915-plane-warn-on-non-zero-plane-offset/20230527-003951
> base: git://anongit.freedesktop.org/drm/drm-tip drm-tip
> patch link: https://lore.kernel.org/r/0988d237e56c56568f035053da8e2e2308a17d3a.1685119007.git.jani.nikula%40intel.com
> patch subject: [Intel-gfx] [PATCH 01/15] drm/i915/plane: warn on non-zero plane offset
> config: x86_64-randconfig-m031-20230526 (https://download.01.org/0day-ci/archive/20230528/202305280453.8yzCMS2i-lkp@intel.com/config)
> compiler: gcc-11 (Debian 11.3.0-12) 11.3.0
>
> If you fix the issue, kindly add following tag where applicable
> | Reported-by: kernel test robot <lkp@intel.com>
> | Reported-by: Dan Carpenter <error27@gmail.com>
> | Closes: https://lore.kernel.org/r/202305280453.8yzCMS2i-lkp@intel.com/
>
> smatch warnings:
> drivers/gpu/drm/i915/display/i9xx_plane.c:1040 i9xx_get_initial_plane_config() error: uninitialized symbol 'offset'.
>
> vim +/offset +1040 drivers/gpu/drm/i915/display/i9xx_plane.c
>
> 2a3014490cd18a Dave Airlie 2021-02-05 974 void
> 2a3014490cd18a Dave Airlie 2021-02-05 975 i9xx_get_initial_plane_config(struct intel_crtc *crtc,
> 2a3014490cd18a Dave Airlie 2021-02-05 976 struct intel_initial_plane_config *plane_config)
> 2a3014490cd18a Dave Airlie 2021-02-05 977 {
> 2a3014490cd18a Dave Airlie 2021-02-05 978 struct drm_device *dev = crtc->base.dev;
> 2a3014490cd18a Dave Airlie 2021-02-05 979 struct drm_i915_private *dev_priv = to_i915(dev);
> 2a3014490cd18a Dave Airlie 2021-02-05 980 struct intel_plane *plane = to_intel_plane(crtc->base.primary);
> 2a3014490cd18a Dave Airlie 2021-02-05 981 enum i9xx_plane_id i9xx_plane = plane->i9xx_plane;
> 2a3014490cd18a Dave Airlie 2021-02-05 982 enum pipe pipe;
> 2a3014490cd18a Dave Airlie 2021-02-05 983 u32 val, base, offset;
> 2a3014490cd18a Dave Airlie 2021-02-05 984 int fourcc, pixel_format;
> 2a3014490cd18a Dave Airlie 2021-02-05 985 unsigned int aligned_height;
> 2a3014490cd18a Dave Airlie 2021-02-05 986 struct drm_framebuffer *fb;
> 2a3014490cd18a Dave Airlie 2021-02-05 987 struct intel_framebuffer *intel_fb;
> 2a3014490cd18a Dave Airlie 2021-02-05 988
> 2a3014490cd18a Dave Airlie 2021-02-05 989 if (!plane->get_hw_state(plane, &pipe))
> 2a3014490cd18a Dave Airlie 2021-02-05 990 return;
> 2a3014490cd18a Dave Airlie 2021-02-05 991
> 2a3014490cd18a Dave Airlie 2021-02-05 992 drm_WARN_ON(dev, pipe != crtc->pipe);
> 2a3014490cd18a Dave Airlie 2021-02-05 993
> 2a3014490cd18a Dave Airlie 2021-02-05 994 intel_fb = kzalloc(sizeof(*intel_fb), GFP_KERNEL);
> 2a3014490cd18a Dave Airlie 2021-02-05 995 if (!intel_fb) {
> 2a3014490cd18a Dave Airlie 2021-02-05 996 drm_dbg_kms(&dev_priv->drm, "failed to alloc fb\n");
> 2a3014490cd18a Dave Airlie 2021-02-05 997 return;
> 2a3014490cd18a Dave Airlie 2021-02-05 998 }
> 2a3014490cd18a Dave Airlie 2021-02-05 999
> 2a3014490cd18a Dave Airlie 2021-02-05 1000 fb = &intel_fb->base;
> 2a3014490cd18a Dave Airlie 2021-02-05 1001
> 2a3014490cd18a Dave Airlie 2021-02-05 1002 fb->dev = dev;
> 2a3014490cd18a Dave Airlie 2021-02-05 1003
> 2a3014490cd18a Dave Airlie 2021-02-05 1004 val = intel_de_read(dev_priv, DSPCNTR(i9xx_plane));
> 2a3014490cd18a Dave Airlie 2021-02-05 1005
> 005e95377249cb Matt Roper 2021-03-19 1006 if (DISPLAY_VER(dev_priv) >= 4) {
> 428cb15d5b0031 Ville Syrjälä 2022-01-21 1007 if (val & DISP_TILED) {
> 2a3014490cd18a Dave Airlie 2021-02-05 1008 plane_config->tiling = I915_TILING_X;
> 2a3014490cd18a Dave Airlie 2021-02-05 1009 fb->modifier = I915_FORMAT_MOD_X_TILED;
> 2a3014490cd18a Dave Airlie 2021-02-05 1010 }
> 2a3014490cd18a Dave Airlie 2021-02-05 1011
> 428cb15d5b0031 Ville Syrjälä 2022-01-21 1012 if (val & DISP_ROTATE_180)
> 2a3014490cd18a Dave Airlie 2021-02-05 1013 plane_config->rotation = DRM_MODE_ROTATE_180;
> 2a3014490cd18a Dave Airlie 2021-02-05 1014 }
> 2a3014490cd18a Dave Airlie 2021-02-05 1015
> 2a3014490cd18a Dave Airlie 2021-02-05 1016 if (IS_CHERRYVIEW(dev_priv) && pipe == PIPE_B &&
> 428cb15d5b0031 Ville Syrjälä 2022-01-21 1017 val & DISP_MIRROR)
> 2a3014490cd18a Dave Airlie 2021-02-05 1018 plane_config->rotation |= DRM_MODE_REFLECT_X;
> 2a3014490cd18a Dave Airlie 2021-02-05 1019
> 428cb15d5b0031 Ville Syrjälä 2022-01-21 1020 pixel_format = val & DISP_FORMAT_MASK;
> 2a3014490cd18a Dave Airlie 2021-02-05 1021 fourcc = i9xx_format_to_fourcc(pixel_format);
> 2a3014490cd18a Dave Airlie 2021-02-05 1022 fb->format = drm_format_info(fourcc);
> 2a3014490cd18a Dave Airlie 2021-02-05 1023
> 2a3014490cd18a Dave Airlie 2021-02-05 1024 if (IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv)) {
> 2a3014490cd18a Dave Airlie 2021-02-05 1025 offset = intel_de_read(dev_priv, DSPOFFSET(i9xx_plane));
> 428cb15d5b0031 Ville Syrjälä 2022-01-21 1026 base = intel_de_read(dev_priv, DSPSURF(i9xx_plane)) & DISP_ADDR_MASK;
> 005e95377249cb Matt Roper 2021-03-19 1027 } else if (DISPLAY_VER(dev_priv) >= 4) {
> 2a3014490cd18a Dave Airlie 2021-02-05 1028 if (plane_config->tiling)
> 2a3014490cd18a Dave Airlie 2021-02-05 1029 offset = intel_de_read(dev_priv,
> 2a3014490cd18a Dave Airlie 2021-02-05 1030 DSPTILEOFF(i9xx_plane));
> 2a3014490cd18a Dave Airlie 2021-02-05 1031 else
> 2a3014490cd18a Dave Airlie 2021-02-05 1032 offset = intel_de_read(dev_priv,
> 2a3014490cd18a Dave Airlie 2021-02-05 1033 DSPLINOFF(i9xx_plane));
> 428cb15d5b0031 Ville Syrjälä 2022-01-21 1034 base = intel_de_read(dev_priv, DSPSURF(i9xx_plane)) & DISP_ADDR_MASK;
> 2a3014490cd18a Dave Airlie 2021-02-05 1035 } else {
> 2a3014490cd18a Dave Airlie 2021-02-05 1036 base = intel_de_read(dev_priv, DSPADDR(i9xx_plane));
>
> offset not initialized on this path.
>
> 2a3014490cd18a Dave Airlie 2021-02-05 1037 }
> 2a3014490cd18a Dave Airlie 2021-02-05 1038 plane_config->base = base;
> 2a3014490cd18a Dave Airlie 2021-02-05 1039
> 40c3d9e9221e23 Jani Nikula 2023-05-26 @1040 drm_WARN_ON(&dev_priv->drm, offset != 0);
--
Jani Nikula, Intel Open Source Graphics Center
^ permalink raw reply [flat|nested] 12+ messages in thread* Re: [Intel-gfx] [PATCH 01/15] drm/i915/plane: warn on non-zero plane offset
@ 2023-05-29 10:04 ` Jani Nikula
0 siblings, 0 replies; 12+ messages in thread
From: Jani Nikula @ 2023-05-29 10:04 UTC (permalink / raw)
To: Dan Carpenter, oe-kbuild, intel-gfx; +Cc: lkp, oe-kbuild-all
On Mon, 29 May 2023, Dan Carpenter <dan.carpenter@linaro.org> wrote:
> Hi Jani,
>
> kernel test robot noticed the following build warnings:
Thanks, v2 already on the list:
https://patchwork.freedesktop.org/patch/msgid/20230526172218.1597394-1-jani.nikula@intel.com
>
> url: https://github.com/intel-lab-lkp/linux/commits/Jani-Nikula/drm-i915-plane-warn-on-non-zero-plane-offset/20230527-003951
> base: git://anongit.freedesktop.org/drm/drm-tip drm-tip
> patch link: https://lore.kernel.org/r/0988d237e56c56568f035053da8e2e2308a17d3a.1685119007.git.jani.nikula%40intel.com
> patch subject: [Intel-gfx] [PATCH 01/15] drm/i915/plane: warn on non-zero plane offset
> config: x86_64-randconfig-m031-20230526 (https://download.01.org/0day-ci/archive/20230528/202305280453.8yzCMS2i-lkp@intel.com/config)
> compiler: gcc-11 (Debian 11.3.0-12) 11.3.0
>
> If you fix the issue, kindly add following tag where applicable
> | Reported-by: kernel test robot <lkp@intel.com>
> | Reported-by: Dan Carpenter <error27@gmail.com>
> | Closes: https://lore.kernel.org/r/202305280453.8yzCMS2i-lkp@intel.com/
>
> smatch warnings:
> drivers/gpu/drm/i915/display/i9xx_plane.c:1040 i9xx_get_initial_plane_config() error: uninitialized symbol 'offset'.
>
> vim +/offset +1040 drivers/gpu/drm/i915/display/i9xx_plane.c
>
> 2a3014490cd18a Dave Airlie 2021-02-05 974 void
> 2a3014490cd18a Dave Airlie 2021-02-05 975 i9xx_get_initial_plane_config(struct intel_crtc *crtc,
> 2a3014490cd18a Dave Airlie 2021-02-05 976 struct intel_initial_plane_config *plane_config)
> 2a3014490cd18a Dave Airlie 2021-02-05 977 {
> 2a3014490cd18a Dave Airlie 2021-02-05 978 struct drm_device *dev = crtc->base.dev;
> 2a3014490cd18a Dave Airlie 2021-02-05 979 struct drm_i915_private *dev_priv = to_i915(dev);
> 2a3014490cd18a Dave Airlie 2021-02-05 980 struct intel_plane *plane = to_intel_plane(crtc->base.primary);
> 2a3014490cd18a Dave Airlie 2021-02-05 981 enum i9xx_plane_id i9xx_plane = plane->i9xx_plane;
> 2a3014490cd18a Dave Airlie 2021-02-05 982 enum pipe pipe;
> 2a3014490cd18a Dave Airlie 2021-02-05 983 u32 val, base, offset;
> 2a3014490cd18a Dave Airlie 2021-02-05 984 int fourcc, pixel_format;
> 2a3014490cd18a Dave Airlie 2021-02-05 985 unsigned int aligned_height;
> 2a3014490cd18a Dave Airlie 2021-02-05 986 struct drm_framebuffer *fb;
> 2a3014490cd18a Dave Airlie 2021-02-05 987 struct intel_framebuffer *intel_fb;
> 2a3014490cd18a Dave Airlie 2021-02-05 988
> 2a3014490cd18a Dave Airlie 2021-02-05 989 if (!plane->get_hw_state(plane, &pipe))
> 2a3014490cd18a Dave Airlie 2021-02-05 990 return;
> 2a3014490cd18a Dave Airlie 2021-02-05 991
> 2a3014490cd18a Dave Airlie 2021-02-05 992 drm_WARN_ON(dev, pipe != crtc->pipe);
> 2a3014490cd18a Dave Airlie 2021-02-05 993
> 2a3014490cd18a Dave Airlie 2021-02-05 994 intel_fb = kzalloc(sizeof(*intel_fb), GFP_KERNEL);
> 2a3014490cd18a Dave Airlie 2021-02-05 995 if (!intel_fb) {
> 2a3014490cd18a Dave Airlie 2021-02-05 996 drm_dbg_kms(&dev_priv->drm, "failed to alloc fb\n");
> 2a3014490cd18a Dave Airlie 2021-02-05 997 return;
> 2a3014490cd18a Dave Airlie 2021-02-05 998 }
> 2a3014490cd18a Dave Airlie 2021-02-05 999
> 2a3014490cd18a Dave Airlie 2021-02-05 1000 fb = &intel_fb->base;
> 2a3014490cd18a Dave Airlie 2021-02-05 1001
> 2a3014490cd18a Dave Airlie 2021-02-05 1002 fb->dev = dev;
> 2a3014490cd18a Dave Airlie 2021-02-05 1003
> 2a3014490cd18a Dave Airlie 2021-02-05 1004 val = intel_de_read(dev_priv, DSPCNTR(i9xx_plane));
> 2a3014490cd18a Dave Airlie 2021-02-05 1005
> 005e95377249cb Matt Roper 2021-03-19 1006 if (DISPLAY_VER(dev_priv) >= 4) {
> 428cb15d5b0031 Ville Syrjälä 2022-01-21 1007 if (val & DISP_TILED) {
> 2a3014490cd18a Dave Airlie 2021-02-05 1008 plane_config->tiling = I915_TILING_X;
> 2a3014490cd18a Dave Airlie 2021-02-05 1009 fb->modifier = I915_FORMAT_MOD_X_TILED;
> 2a3014490cd18a Dave Airlie 2021-02-05 1010 }
> 2a3014490cd18a Dave Airlie 2021-02-05 1011
> 428cb15d5b0031 Ville Syrjälä 2022-01-21 1012 if (val & DISP_ROTATE_180)
> 2a3014490cd18a Dave Airlie 2021-02-05 1013 plane_config->rotation = DRM_MODE_ROTATE_180;
> 2a3014490cd18a Dave Airlie 2021-02-05 1014 }
> 2a3014490cd18a Dave Airlie 2021-02-05 1015
> 2a3014490cd18a Dave Airlie 2021-02-05 1016 if (IS_CHERRYVIEW(dev_priv) && pipe == PIPE_B &&
> 428cb15d5b0031 Ville Syrjälä 2022-01-21 1017 val & DISP_MIRROR)
> 2a3014490cd18a Dave Airlie 2021-02-05 1018 plane_config->rotation |= DRM_MODE_REFLECT_X;
> 2a3014490cd18a Dave Airlie 2021-02-05 1019
> 428cb15d5b0031 Ville Syrjälä 2022-01-21 1020 pixel_format = val & DISP_FORMAT_MASK;
> 2a3014490cd18a Dave Airlie 2021-02-05 1021 fourcc = i9xx_format_to_fourcc(pixel_format);
> 2a3014490cd18a Dave Airlie 2021-02-05 1022 fb->format = drm_format_info(fourcc);
> 2a3014490cd18a Dave Airlie 2021-02-05 1023
> 2a3014490cd18a Dave Airlie 2021-02-05 1024 if (IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv)) {
> 2a3014490cd18a Dave Airlie 2021-02-05 1025 offset = intel_de_read(dev_priv, DSPOFFSET(i9xx_plane));
> 428cb15d5b0031 Ville Syrjälä 2022-01-21 1026 base = intel_de_read(dev_priv, DSPSURF(i9xx_plane)) & DISP_ADDR_MASK;
> 005e95377249cb Matt Roper 2021-03-19 1027 } else if (DISPLAY_VER(dev_priv) >= 4) {
> 2a3014490cd18a Dave Airlie 2021-02-05 1028 if (plane_config->tiling)
> 2a3014490cd18a Dave Airlie 2021-02-05 1029 offset = intel_de_read(dev_priv,
> 2a3014490cd18a Dave Airlie 2021-02-05 1030 DSPTILEOFF(i9xx_plane));
> 2a3014490cd18a Dave Airlie 2021-02-05 1031 else
> 2a3014490cd18a Dave Airlie 2021-02-05 1032 offset = intel_de_read(dev_priv,
> 2a3014490cd18a Dave Airlie 2021-02-05 1033 DSPLINOFF(i9xx_plane));
> 428cb15d5b0031 Ville Syrjälä 2022-01-21 1034 base = intel_de_read(dev_priv, DSPSURF(i9xx_plane)) & DISP_ADDR_MASK;
> 2a3014490cd18a Dave Airlie 2021-02-05 1035 } else {
> 2a3014490cd18a Dave Airlie 2021-02-05 1036 base = intel_de_read(dev_priv, DSPADDR(i9xx_plane));
>
> offset not initialized on this path.
>
> 2a3014490cd18a Dave Airlie 2021-02-05 1037 }
> 2a3014490cd18a Dave Airlie 2021-02-05 1038 plane_config->base = base;
> 2a3014490cd18a Dave Airlie 2021-02-05 1039
> 40c3d9e9221e23 Jani Nikula 2023-05-26 @1040 drm_WARN_ON(&dev_priv->drm, offset != 0);
--
Jani Nikula, Intel Open Source Graphics Center
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