kernel/linux.git/drivers/gpu/drm/drm_sysfs.c, branch v7.0-rc7

Convert 'alloc_obj' family to use the new default GFP_KERNEL argument

2026-02-22T01:09:51+00:00

This was done entirely with mindless brute force, using git grep -l '\

treewide: Replace kmalloc with kmalloc_obj for non-scalar types

2026-02-21T09:02:28+00:00

This is the result of running the Coccinelle script from scripts/coccinelle/api/kmalloc_objs.cocci. The script is designed to avoid scalar types (which need careful case-by-case checking), and instead replace kmalloc-family calls that allocate struct or union object instances: Single allocations: kmalloc(sizeof(TYPE), ...) are replaced with: kmalloc_obj(TYPE, ...) Array allocations: kmalloc_array(COUNT, sizeof(TYPE), ...) are replaced with: kmalloc_objs(TYPE, COUNT, ...) Flex array allocations: kmalloc(struct_size(PTR, FAM, COUNT), ...) are replaced with: kmalloc_flex(*PTR, FAM, COUNT, ...) (where TYPE may also be *VAR) The resulting allocations no longer return "void *", instead returning "TYPE *". Signed-off-by: Kees Cook

DRM: Add a new 'boot_display' attribute

2025-09-10T14:35:33+00:00

On systems with multiple GPUs there can be uncertainty which GPU is the primary one used to drive the display at bootup. In some desktop environments this can lead to increased power consumption because secondary GPUs may be used for rendering and never go to a low power state. In order to disambiguate this add a new sysfs attribute 'boot_display' that uses the output of video_is_primary_device() to populate whether the PCI device was used for driving the display. Suggested-by: Manivannan Sadhasivam Acked-by: Manivannan Sadhasivam Link: https://gitlab.freedesktop.org/xorg/lib/libpciaccess/-/issues/23 Reviewed-by: Thomas Zimmermann Link: https://lore.kernel.org/r/20250811162606.587759-5-superm1@kernel.org Signed-off-by: Mario Limonciello (AMD)

sysfs: treewide: switch back to attribute_group::bin_attrs

2025-06-17T08:44:15+00:00

The normal bin_attrs field can now handle const pointers. This makes the _new variant unnecessary. Switch all users back. Signed-off-by: Thomas Weißschuh Link: https://lore.kernel.org/r/20250530-sysfs-const-bin_attr-final-v3-4-724bfcf05b99@weissschuh.net Signed-off-by: Greg Kroah-Hartman

sysfs: treewide: switch back to bin_attribute::read()/write()

2025-06-17T08:44:13+00:00

The bin_attribute argument of bin_attribute::read() is now const. This makes the _new() callbacks unnecessary. Switch all users back. Signed-off-by: Thomas Weißschuh Link: https://lore.kernel.org/r/20250530-sysfs-const-bin_attr-final-v3-3-724bfcf05b99@weissschuh.net Signed-off-by: Greg Kroah-Hartman

drm/sysfs: Constify 'struct bin_attribute'

2025-02-21T08:20:31+00:00

The sysfs core now allows instances of 'struct bin_attribute' to be moved into read-only memory. Make use of that to protect them against accidental or malicious modifications. Signed-off-by: Thomas Weißschuh Reviewed-by: Jani Nikula Reviewed-by: Andi Shyti Link: https://lore.kernel.org/r/20241216-sysfs-const-bin_attr-drm-v1-1-210f2b36b9bf@weissschuh.net Signed-off-by: Greg Kroah-Hartman

drm/edid: add a helper for EDID sysfs property show

2024-05-23T11:37:24+00:00

Add a helper to get the EDID property for sysfs property show. This hides all the edid_blob_ptr usage within drm_edid.c. Reviewed-by: Chaitanya Kumar Borah Acked-by: Alex Deucher Link: https://patchwork.freedesktop.org/patch/msgid/902c8e09d25b99391fd9c92d95af07c01d7b7cbd.1715353572.git.jani.nikula@intel.com Signed-off-by: Jani Nikula

drm/sysfs: switch to drm device based logging

2024-04-15T13:22:05+00:00

Prefer drm_dbg_kms() and drm_dbg_lease() over DRM_DEBUG_KMS() and DRM_DEBUG() to debug log the drm device info. Fix some debug categories and unify connector logging while at it. v2: Drop superfluous newline Reviewed-by: Thomas Zimmermann Link: https://patchwork.freedesktop.org/patch/msgid/7f3dd5b4a33f964c6903c7a964da5397f4084aeb.1712568037.git.jani.nikula@intel.com Signed-off-by: Jani Nikula

drm/sysfs: Register "ddc" symlink later

2023-09-15T11:46:42+00:00

Currently drm_sysfs_connector_add() attempts to register the "ddc" symlink (based one connector->ddc) before the driver's .early_register() hook has been called. That is too early for i915 which only fully registers the aux ch and associated i2c bus from said hook (to prevent half initialized stuff getting exposed to userspace). This causes my attempt at using drm_connector_init_with_ddc() to fail, and the entire connector disappears from sysfs on account of sysfs_create_link() failing. To fix that split the sysfs symlink stuff into separate functions (drm_sysfs_connector_add_late() and drm_sysfs_connector_remove_early()) which are called on the opposite side of the .later_register() and .early_unregister() hooks. Cc: Andrzej Pietrasiewicz Cc: Daniel Vetter Cc: Andrzej Hajda Cc: Emil Velikov Cc: Sam Ravnborg Cc: Neil Armstrong Signed-off-by: Ville Syrjälä Link: https://patchwork.freedesktop.org/patch/msgid/20230829113920.13713-3-ville.syrjala@linux.intel.com Reviewed-by: Jani Nikula Acked-by: Thomas Zimmermann #irc

drm/sysfs: rename drm_sysfs_connector_status_event()

2023-06-23T13:54:00+00:00

Rename drm_sysfs_connector_status_event() to drm_sysfs_connector_property_event(). Indeed, "status" is a bit vague: it can easily be confused with the connected/disconnected status of the connector. This function has nothing to do with connected/disconnected: it merely sends a notification that a connector's property has changed (e.g. HDCP, privacy screen, etc). Signed-off-by: Simon Ser Cc: Manasi Navare Cc: Sam Ravnborg Cc: Harry Wentland Cc: Daniel Vetter Reviewed-by: Sam Ravnborg Link: https://patchwork.freedesktop.org/patch/msgid/20230620174231.260335-1-contact@emersion.fr