kernel/linux.git/drivers/gpu/drm/udl, branch v6.12.80

drm/udl: Unregister device before cleaning up on disconnect

2025-07-06T09:01:45+00:00

commit ff9cb6d2035c586ea7c8f1754d4409eec7a2d26d upstream. Disconnecting a DisplayLink device results in the following kernel error messages [ 93.041748] [drm:udl_urb_completion [udl]] *ERROR* udl_urb_completion - nonzero write bulk status received: -115 [ 93.055299] [drm:udl_submit_urb [udl]] *ERROR* usb_submit_urb error fffffffe [ 93.065363] [drm:udl_urb_completion [udl]] *ERROR* udl_urb_completion - nonzero write bulk status received: -115 [ 93.078207] [drm:udl_submit_urb [udl]] *ERROR* usb_submit_urb error fffffffe coming from KMS poll helpers. Shutting down poll helpers runs them one final time when the USB device is already gone. Run drm_dev_unplug() first in udl's USB disconnect handler. Udl's polling code already handles disconnects gracefully if the device has been marked as unplugged. Signed-off-by: Thomas Zimmermann Fixes: b1a981bd5576 ("drm/udl: drop drm_driver.release hook") Cc: dri-devel@lists.freedesktop.org Cc: # v5.8+ Reviewed-by: Patrik Jakobsson Link: https://patchwork.freedesktop.org/patch/msgid/20250303145604.62962-2-tzimmermann@suse.de Signed-off-by: Greg Kroah-Hartman

move asm/unaligned.h to linux/unaligned.h

2024-10-02T21:23:23+00:00

asm/unaligned.h is always an include of asm-generic/unaligned.h; might as well move that thing to linux/unaligned.h and include that - there's nothing arch-specific in that header. auto-generated by the following: for i in `git grep -l -w asm/unaligned.h`; do sed -i -e "s/asm\/unaligned.h/linux\/unaligned.h/" $i done for i in `git grep -l -w asm-generic/unaligned.h`; do sed -i -e "s/asm-generic\/unaligned.h/linux\/unaligned.h/" $i done git mv include/asm-generic/unaligned.h include/linux/unaligned.h git mv tools/include/asm-generic/unaligned.h tools/include/linux/unaligned.h sed -i -e "/unaligned.h/d" include/asm-generic/Kbuild sed -i -e "s/__ASM_GENERIC/__LINUX/" include/linux/unaligned.h tools/include/linux/unaligned.h

drm: use mem_is_zero() instead of !memchr_inv(s, 0, n)

2024-08-16T09:07:46+00:00

drm: add missing MODULE_DESCRIPTION() macros

2024-06-10T10:44:39+00:00

On x86, make allmodconfig && make W=1 C=1 reports: WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/gpu/drm/gud/gud.o WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/gpu/drm/drm_panel_orientation_quirks.o WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/gpu/drm/drm_mipi_dbi.o WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/gpu/drm/i915/kvmgt.o WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/gpu/drm/udl/udl.o Add the missing invocation of the MODULE_DESCRIPTION() macro to all files which have a MODULE_LICENSE(). For consistency this includes drivers/gpu/drm/drm_simple_kms_helper.c since it contains a MODULE_LICENSE() even though it isn't built as a separate module -- it is always built as part of drm_kms_helper and drm_kms_helper_common.c already provides a MODULE_DESCRIPTION for that module. Signed-off-by: Jeff Johnson Signed-off-by: Maxime Ripard Link: https://patchwork.freedesktop.org/patch/msgid/20240609-md-drivers-gpu-drm-v1-1-89e9a316d513@quicinc.com

drm/udl: Remove struct udl_connector

2024-05-13T11:35:53+00:00

Udl's struct udl_connector is an empty wrapper around struct drm_connector. Remove it. Allocate the connector as part of struct udl_device and inline the init function into its only caller. v2: - fix return value in udl_modeset_init() (Dan) Signed-off-by: Thomas Zimmermann Reviewed-by: Jani Nikula Link: https://patchwork.freedesktop.org/patch/msgid/20240510154841.11370-6-tzimmermann@suse.de

drm/udl: Untangle .get_modes() and .detect_ctx()

2024-05-13T11:35:52+00:00

Provide separate implementations of .get_modes() and .detect_ctx() from struct drm_connector. Switch to struct drm_edid. Udl's .detect() helper used to fetch the EDID from the adapter and the .get_modes() helper provided display modes from the data. But this relied on the DRM helpers to call the functions in the correct order. When no EDID could be retrieved, .detect() regularly printed a warning to the kernel log. Switching to the new helpers around struct drm_edid separates both from each other. The .get_modes() helper now fetches the EDID by itself and the .detect_ctx() helper only tests for its presence. The patch does a number of things to implement this. - Move udl_get_edid_block() to udl_edid.c and rename it to udl_read_edid_block(). Then use the helper to implement probing in udl_probe_edid() and reading in udl_edid_read(). The latter helper is build on top of DRM helpers. - Replace the existing code in .get_modes() and .detect() with udl's new EDID helpers. The new code behaves like DRM's similar DDC-based helpers. Instead of .detect(), udl now implements .detect_ctx(). - Remove the edid data from struct udl_connector. The field cached the EDID data between calls to .detect() and .get_modes(), but is now unused. v3: - implement udl_probe_edid() with memchr_inv() (Jani) v2: - implement udl_probe_edid() within udl - reword commit description Signed-off-by: Thomas Zimmermann Reviewed-by: Jani Nikula Link: https://patchwork.freedesktop.org/patch/msgid/20240510154841.11370-5-tzimmermann@suse.de

drm/udl: Clean up Makefile

2024-05-13T11:35:52+00:00

Clean up Makefile before listing new object files. No functional changes. Signed-off-by: Thomas Zimmermann Reviewed-by: Jani Nikula Link: https://patchwork.freedesktop.org/patch/msgid/20240510154841.11370-4-tzimmermann@suse.de

drm/udl: Move drm_dev_{enter, exit}() into udl_get_edid_block()

2024-05-13T11:35:51+00:00

Protect the code in udl_get_edid_block() with drm_dev_enter() and drm_dev_exit(), so that all callers automatically invoke it. The function uses hardware resources, which can be hot-unplugged at any time. The other code in udl_connector_detect() does not use the resources of the hardware device and therefore does not require protection. This change will allow to use udl_get_edid_block() in various contexts easily. Signed-off-by: Thomas Zimmermann Reviewed-by: Jani Nikula Link: https://patchwork.freedesktop.org/patch/msgid/20240510154841.11370-3-tzimmermann@suse.de

drm/udl: Remove DRM_CONNECTOR_POLL_HPD

2024-05-13T11:35:51+00:00

DisplayLink devices do not generate hotplug events. Remove the poll flag DRM_CONNECTOR_POLL_HPD, as it may not be specified together with DRM_CONNECTOR_POLL_CONNECT or DRM_CONNECTOR_POLL_DISCONNECT. Signed-off-by: Thomas Zimmermann Fixes: afdfc4c6f55f ("drm/udl: Fixed problem with UDL adpater reconnection") Reviewed-by: Jani Nikula Cc: Robert Tarasov Cc: Alex Deucher Cc: Dave Airlie Cc: Sean Paul Cc: Thomas Zimmermann Cc: dri-devel@lists.freedesktop.org Cc: # v4.15+ Link: https://patchwork.freedesktop.org/patch/msgid/20240510154841.11370-2-tzimmermann@suse.de

drm/udl: Use fbdev-shmem

2024-05-02T09:33:21+00:00

Implement fbdev emulation with fbdev-shmem. Avoids the overhead of fbdev-generic's additional shadow buffering. No functional changes. Signed-off-by: Thomas Zimmermann Cc: Dave Airlie Cc: Sean Paul Cc: Thomas Zimmermann Reviewed-by: Javier Martinez Canillas Link: https://patchwork.freedesktop.org/patch/msgid/20240419083331.7761-19-tzimmermann@suse.de