6.8-stable review patch. If anyone has any objections, please let me know.
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From: Ankit Nautiyal ankit.k.nautiyal@intel.com
commit f7caddfd558e32db0ae944256e623a259538b357 upstream.
For DISPLAY < 13, compressed bpp is chosen from a list of supported compressed bpps. Fix the condition to choose the appropriate compressed bpp from the list.
Fixes: 1c56e9a39833 ("drm/i915/dp: Get optimal link config to have best compressed bpp") Cc: Ankit Nautiyal ankit.k.nautiyal@intel.com Cc: Stanislav Lisovskiy stanislav.lisovskiy@intel.com Cc: Jani Nikula jani.nikula@linux.intel.com Cc: stable@vger.kernel.org # v6.7+ Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/10162 Signed-off-by: Ankit Nautiyal ankit.k.nautiyal@intel.com Reviewed-by: Suraj Kandpal suraj.kandpal@intel.com Link: https://patchwork.freedesktop.org/patch/msgid/20240305054443.2489895-1-ankit... (cherry picked from commit 5a1da42b50f3594e18738885c2f23ed36629dd00) Signed-off-by: Rodrigo Vivi rodrigo.vivi@intel.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/gpu/drm/i915/display/intel_dp.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-)
--- a/drivers/gpu/drm/i915/display/intel_dp.c +++ b/drivers/gpu/drm/i915/display/intel_dp.c @@ -1916,8 +1916,9 @@ icl_dsc_compute_link_config(struct intel dsc_max_bpp = min(dsc_max_bpp, pipe_bpp - 1);
for (i = 0; i < ARRAY_SIZE(valid_dsc_bpp); i++) { - if (valid_dsc_bpp[i] < dsc_min_bpp || - valid_dsc_bpp[i] > dsc_max_bpp) + if (valid_dsc_bpp[i] < dsc_min_bpp) + continue; + if (valid_dsc_bpp[i] > dsc_max_bpp) break;
ret = dsc_compute_link_config(intel_dp,