diff options
| author | Juha-Pekka Heikkila <juhapekka.heikkila@gmail.com> | 2025-09-05 13:46:26 +0300 |
|---|---|---|
| committer | Mika Kahola <mika.kahola@intel.com> | 2025-09-05 15:24:46 +0300 |
| commit | 70a9b201cfa893fd0b7125c8f9205d9e12e02ba5 (patch) | |
| tree | 0403922e0611d276ef1b63cf606b4a3a5a5520e0 | |
| parent | 1de89eca2004ebf0858cde504c903430b60f0975 (diff) | |
drm/i915/display: Avoid divide by zero
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 <juhapekka.heikkila@gmail.com>
Reviewed-by: Suraj Kandpal <suraj.kandpal@intel.com>
Signed-off-by: Mika Kahola <mika.kahola@intel.com>
Link: https://lore.kernel.org/r/20250905104626.1274147-3-juhapekka.heikkila@gmail.com
| -rw-r--r-- | drivers/gpu/drm/i915/display/skl_watermark.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/display/skl_watermark.c b/drivers/gpu/drm/i915/display/skl_watermark.c index 0b9c86042e78..d74cbb43ae6f 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)); |