diff options
| author | Damien Lespiau <damien.lespiau@intel.com> | 2015-01-21 13:50:54 +0000 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2015-01-27 09:51:07 +0100 |
| commit | 1b842c89bd8eb0e9619e1aba071c9a5529b7a179 (patch) | |
| tree | 64ecb4ae0ba844eb9d9c8df61542ed54cf9c1753 | |
| parent | 0f71979ab7fbd0c71c41c2798de3d33937915434 (diff) | |
drm/i915: Fix kzalloc() smatch warnings in get_initial_plane_config()
Smatch doesn't like:
struct drm_framebuffer *fb;
fb = kzalloc(sizeof(struct intel_framebuffer), GFP_KERNEL);
and warns with:
warn: struct type mismatch 'drm_framebuffer vs intel_framebuffer'
This implicit cast was correct as struct intel_framebuffer has struct
drm_framebuffer as its first member, but in case someone want to reorder
the fields for some reason, it's slightly safer to access the underlying
drm_framebuffer through intel_fb->base.
Also, having fewer static analysis warnings is a worthy goal.
Cc: kbuild@01.org
Cc: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
| -rw-r--r-- | drivers/gpu/drm/i915/intel_display.c | 21 |
1 files changed, 15 insertions, 6 deletions
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index 65fce56646b9..01dc80b50df5 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -6584,13 +6584,16 @@ i9xx_get_initial_plane_config(struct intel_crtc *crtc, int fourcc, pixel_format; int aligned_height; struct drm_framebuffer *fb; + struct intel_framebuffer *intel_fb; - fb = kzalloc(sizeof(struct intel_framebuffer), GFP_KERNEL); - if (!fb) { + intel_fb = kzalloc(sizeof(struct intel_framebuffer), GFP_KERNEL); + if (!intel_fb) { DRM_DEBUG_KMS("failed to alloc fb\n"); return; } + fb = &intel_fb->base; + val = I915_READ(DSPCNTR(plane)); if (INTEL_INFO(dev)->gen >= 4) @@ -7613,13 +7616,16 @@ skylake_get_initial_plane_config(struct intel_crtc *crtc, int fourcc, pixel_format; int aligned_height; struct drm_framebuffer *fb; + struct intel_framebuffer *intel_fb; - fb = kzalloc(sizeof(struct intel_framebuffer), GFP_KERNEL); - if (!fb) { + intel_fb = kzalloc(sizeof(struct intel_framebuffer), GFP_KERNEL); + if (!intel_fb) { DRM_DEBUG_KMS("failed to alloc fb\n"); return; } + fb = &intel_fb->base; + val = I915_READ(PLANE_CTL(pipe, 0)); if (val & PLANE_CTL_TILED_MASK) plane_config->tiling = I915_TILING_X; @@ -7706,13 +7712,16 @@ ironlake_get_initial_plane_config(struct intel_crtc *crtc, int fourcc, pixel_format; int aligned_height; struct drm_framebuffer *fb; + struct intel_framebuffer *intel_fb; - fb = kzalloc(sizeof(struct intel_framebuffer), GFP_KERNEL); - if (!fb) { + intel_fb = kzalloc(sizeof(struct intel_framebuffer), GFP_KERNEL); + if (!intel_fb) { DRM_DEBUG_KMS("failed to alloc fb\n"); return; } + fb = &intel_fb->base; + val = I915_READ(DSPCNTR(pipe)); if (INTEL_INFO(dev)->gen >= 4) |