A patch of mine recently merged in drm-misc-next [1] has a NULL pointer deref regression (reported here [2] and here [3]). Being in lack of a quick fix, I sent a revert proposal [4].
The revert proposal has no answers currenty, and in the meanwhile I have a patch that implements the original idea but without the same bug. So here's a v2 series with: - the same revert patch - the original patch but rewritten without the same bug (and even simpler) Also the re-written patch is now split in two for clarity because it was doing two somewhat different things. [1] https://lore.kernel.org/all/20250926-drm-bridge-alloc-getput-bridge-connector-v2-1-138b4bb70...@bootlin.com/ [2] https://lore.kernel.org/lkml/[email protected]/ [3] https://lore.kernel.org/lkml/CA+G9fYuKHp3QgPKjgFY3TfkDdh5Vf=Ae5pCW+eU41Bu=d7t...@mail.gmail.com/ [4] https://lore.kernel.org/lkml/20251016-drm-bridge-alloc-getput-bridge-connector-fix-hdmi_cec-v1-1-81d6984c5...@bootlin.com/ Signed-off-by: Luca Ceresoli <[email protected]> --- Changes in v2: - No changes to the revert patch - Added the (corrected) patch introducing the same feature as the original buggy patch, and also split it in two fir clarity - Link to v1: https://lore.kernel.org/r/20251016-drm-bridge-alloc-getput-bridge-connector-fix-hdmi_cec-v1-1-81d6984c5...@bootlin.com --- Luca Ceresoli (3): Revert "drm/display: bridge_connector: get/put the stored bridges" drm/display: bridge_connector: get/put the stored bridges drm/display: bridge_connector: get/put the panel_bridge drivers/gpu/drm/display/drm_bridge_connector.c | 92 +++++++++++--------------- 1 file changed, 39 insertions(+), 53 deletions(-) --- base-commit: 84a0a3f014cda68ff10b8517d09e9f0c1cd942a2 change-id: 20251016-drm-bridge-alloc-getput-bridge-connector-fix-hdmi_cec-9a429ddb48e2 Best regards, -- Luca Ceresoli <[email protected]>
