skl_crtc_allocate_plane_ddb allow iter.data_rate to be zero which could cause divide by zero in skl_allocate_plane_ddb, check against that.
Signed-off-by: Juha-Pekka Heikkila <[email protected]> --- drivers/gpu/drm/i915/display/skl_watermark.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/display/skl_watermark.c b/drivers/gpu/drm/i915/display/skl_watermark.c index def5150231a4..403783504ab3 100644 --- a/drivers/gpu/drm/i915/display/skl_watermark.c +++ b/drivers/gpu/drm/i915/display/skl_watermark.c @@ -1388,7 +1388,7 @@ skl_allocate_plane_ddb(struct skl_plane_ddb_iter *iter, { u16 size, extra = 0; - if (data_rate) { + if (data_rate && iter->data_rate) { extra = min_t(u16, iter->size, DIV64_U64_ROUND_UP(iter->size * data_rate, iter->data_rate)); -- 2.43.0
