diff options
| author | Jonathan Gray <jsg@cvs.openbsd.org> | 2023-06-15 02:41:46 +0000 |
|---|---|---|
| committer | Jonathan Gray <jsg@cvs.openbsd.org> | 2023-06-15 02:41:46 +0000 |
| commit | 2b3eb2b616a54e3117c4a813c22ec8a4db6ee0ee (patch) | |
| tree | d0b225294f74da0ef9c2d6b000b8c712f5774a41 /sys/dev/pci/drm/i915 | |
| parent | ecc9ca4ebd64b736eee7141880fec0ea0fc57a3b (diff) | |
drm/i915/dp: prevent potential div-by-zero
From Nikita Zhandarovich
86d73b1f98a81f3ecfc19dfe6f8d50daf5707330 in linux-6.1.y/6.1.30
0ff80028e2702c7c3d78b69705dc47c1ccba8c39 in mainline linux
Diffstat (limited to 'sys/dev/pci/drm/i915')
| -rw-r--r-- | sys/dev/pci/drm/i915/display/intel_dp.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/sys/dev/pci/drm/i915/display/intel_dp.c b/sys/dev/pci/drm/i915/display/intel_dp.c index dd62aeae535..dd636c23a89 100644 --- a/sys/dev/pci/drm/i915/display/intel_dp.c +++ b/sys/dev/pci/drm/i915/display/intel_dp.c @@ -1512,6 +1512,11 @@ static int intel_dp_dsc_compute_config(struct intel_dp *intel_dp, pipe_config->dsc.slice_count = drm_dp_dsc_sink_max_slice_count(intel_dp->dsc_dpcd, true); + if (!pipe_config->dsc.slice_count) { + drm_dbg_kms(&dev_priv->drm, "Unsupported Slice Count %d\n", + pipe_config->dsc.slice_count); + return -EINVAL; + } } else { u16 dsc_max_output_bpp; u8 dsc_dp_slice_count; |