Boris Brezillon f66ff55a9b drm/exynos: dsi: Fix bridge chain handling ... Commit 05193dc381 ("drm/bridge: Make the bridge chain a double-linked list") patched the bridge chain logic to use a double-linked list instead of a single-linked list. This change induced changes to the Exynos driver which was manually resetting the encoder->bridge element to NULL to control the enable/disable sequence of the bridge chain. During this conversion, 2 bugs were introduced: 1/ list_splice() was used to move chain elements to our own internal chain, but list_splice() does not reset the source list to an empty state, leading to unexpected bridge hook calls when drm_bridge_chain_xxx() helpers were called by the core. Replacing the list_splice() call by list_splice_init() fixes this problem. 2/ drm_bridge_chain_xxx() helpers operate on the bridge->encoder->bridge_chain list, which is now empty. When the helper uses list_for_each_entry_reverse() we end up with no operation done which is not what we want. But that's even worse when the helper uses list_for_each_entry_from(), because in that case we end up in an infinite loop searching for the list head element which is no longer encoder->bridge_chain but exynos_dsi->bridge_chain. To address that problem we stop using the bridge chain helpers and call the hooks directly. Reported-by: Marek Szyprowski <m.szyprowski@samsung.com> Fixes: 05193dc381 ("drm/bridge: Make the bridge chain a double-linked list") Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com> Tested-by: Marek Szyprowski <m.szyprowski@samsung.com> Reviewed-by: Andrzej Hajda <a.hajda@samsung.com> Link: https://patchwork.freedesktop.org/patch/msgid/20191227144124.210294-3-boris.brezillon@collabora.com		2020-01-08 09:09:48 +01:00
..
exynos7_drm_decon.c
exynos5433_drm_decon.c
exynos_dp.c	drm/exynos: Don't reset bridge->next	2019-12-02 09:34:06 +01:00
exynos_drm_crtc.c
exynos_drm_crtc.h
exynos_drm_dma.c
exynos_drm_dpi.c	drm/panel: decouple connector from drm_panel	2019-12-09 22:57:26 +01:00
exynos_drm_drv.c	drm main pull for 5.4-rc1	2019-09-19 16:24:24 -07:00
exynos_drm_drv.h
exynos_drm_dsi.c	drm/exynos: dsi: Fix bridge chain handling	2020-01-08 09:09:48 +01:00
exynos_drm_fb.c
exynos_drm_fb.h
exynos_drm_fbdev.c	drm: constify fb ops across all drivers	2019-12-05 10:57:42 +02:00
exynos_drm_fbdev.h
exynos_drm_fimc.c
exynos_drm_fimd.c
exynos_drm_g2d.c
exynos_drm_g2d.h
exynos_drm_gem.c
exynos_drm_gem.h
exynos_drm_gsc.c
exynos_drm_ipp.c
exynos_drm_ipp.h
exynos_drm_mic.c
exynos_drm_plane.c
exynos_drm_plane.h
exynos_drm_rotator.c
exynos_drm_scaler.c
exynos_drm_vidi.c
exynos_drm_vidi.h
exynos_hdmi.c	drm/exynos: Provide ddc symlink in connector's sysfs	2019-11-08 09:16:14 +01:00
exynos_mixer.c	drm/exynos: Move static keyword to the front of declaration	2019-10-28 21:12:27 +09:00
Kconfig
Makefile
regs-decon7.h
regs-decon5433.h
regs-fimc.h
regs-gsc.h
regs-hdmi.h
regs-mixer.h
regs-rotator.h
regs-scaler.h
regs-vp.h