[PATCH] drm/i915: Avoid divide by zero
Mika Kahola
mika.kahola at intel.com
Tue Jan 22 09:31:59 UTC 2019
Avoid divide by zero warning on static analysis.
Signed-off-by: Mika Kahola <mika.kahola at intel.com>
---
drivers/gpu/drm/i915/intel_pm.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index 8b63afa3a221..76fd6b026036 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -3912,8 +3912,10 @@ skl_ddb_get_pipe_allocation_limits(struct drm_i915_private *dev_priv,
pipe_width = hdisplay;
}
- alloc->start = ddb_size * width_before_pipe / total_width;
- alloc->end = ddb_size * (width_before_pipe + pipe_width) / total_width;
+ total_width == 0 ? alloc->start = 0 :
+ ddb_size * width_before_pipe / total_width;
+ total_width == 0 ? alloc->end = 1 :
+ ddb_size * (width_before_pipe + pipe_width) / total_width;
}
static unsigned int skl_cursor_allocation(int num_active)
--
2.17.1
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