Takashi Iwai 7d3b073708 drm/udl: Restore display mode on resume ... commit 6d6e732835 upstream. Restore the display mode whne resuming from suspend. Currently, the display remains dark. On resume, the CRTC's mode does not change, but the 'active' flag changes to 'true'. Taking this into account when considering a mode switch restores the display mode. The bug is reproducable by using Gnome with udl and observing the adapter's suspend/resume behavior. Actually, the whole check added in udl_simple_display_pipe_enable() about the crtc_state->mode_changed was bogus. We should drop the whole check and always apply the mode change in this function. [ tiwai -- Drop the mode_changed check entirely instead, per Daniel's suggestion ] Fixes: 997d33c356 ("drm/udl: Inline DPMS code into CRTC enable and disable functions") Cc: <stable@vger.kernel.org> Suggested-by: Daniel Vetter <daniel.vetter@ffwll.ch> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Link: https://patchwork.freedesktop.org/patch/msgid/20220908095115.23396-2-tiwai@suse.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2022-10-21 12:37:41 +02:00
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Kconfig	drm/shmem-helper: Switch to vmf_insert_pfn	2021-08-12 21:41:10 +02:00
Makefile	drm/udl: Use GEM vmap/mmap function from SHMEM helpers	2020-06-10 10:17:21 +02:00
udl_connector.c	drm: Drop drm_edid.h from drm_crtc.h	2022-06-20 23:53:55 +03:00
udl_connector.h
udl_drv.c	drm: Use USB controller's DMA mask when importing dmabufs	2021-03-11 11:11:33 +01:00
udl_drv.h	drm: Use USB controller's DMA mask when importing dmabufs	2021-03-11 11:11:33 +01:00
udl_main.c	drm: Use USB controller's DMA mask when importing dmabufs	2021-03-11 11:11:33 +01:00
udl_modeset.c	drm/udl: Restore display mode on resume	2022-10-21 12:37:41 +02:00
udl_transfer.c