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a469749640fbcd2f49ab05fb83cca3da07f35ee3
linux/drivers/gpu/drm
History
Ethan Tidmore a469749640 drm/bridge: waveshare-dsi: Fix signedness bug 
The function drm_of_get_data_lanes_count_ep() returns negative error
codes and dsi->lanes is an unsigned integer, so the check (dsi->lanes <
0) is always impossible.

Make the return value of drm_of_get_data_lanes_count_ep() be assigned to
ret, check for error, and then assign dsi->lanes to ret.

Detected by Smatch:
drivers/gpu/drm/bridge/waveshare-dsi.c:70 ws_bridge_attach_dsi() warn:
unsigned 'dsi->lanes' is never less than zero.

Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202603060341.hNj0pl9L-lkp@intel.com/
Fixes: fca1142842 ("drm/bridge: waveshare-dsi: Add support for 1..4 DSI data lanes")
Signed-off-by: Ethan Tidmore <ethantidmore06@gmail.com>
Reviewed-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
Reviewed-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
Link: https://patch.msgid.link/20260307033245.71666-1-ethantidmore06@gmail.com
Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
2026-03-17 18:04:08 +01:00
..
adp
…
amd
Merge tag 'amd-drm-next-7.1-2026-03-04' of https://gitlab.freedesktop.org/agd5f/linux into drm-next
2026-03-09 06:04:21 +10:00
arm
Merge drm/drm-next into drm-misc-next
2026-02-23 11:48:20 +01:00
armada
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
aspeed
…
ast
Convert more 'alloc_obj' cases to default GFP_KERNEL arguments
2026-02-21 20:03:00 -08:00
atmel-hlcdc
drm: atmel-hlcdc: add LCD controller layer definition for sama7d65
2026-02-25 09:20:45 +05:30
bridge
drm/bridge: waveshare-dsi: Fix signedness bug
2026-03-17 18:04:08 +01:00
ci
Merge tag 'mm-nonmm-stable-2026-02-12-10-48' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
2026-02-12 12:13:01 -08:00
clients
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
display
Merge drm/drm-next into drm-misc-next
2026-02-23 11:48:20 +01:00
etnaviv
Convert more 'alloc_obj' cases to default GFP_KERNEL arguments
2026-02-21 20:03:00 -08:00
exynos
Convert more 'alloc_obj' cases to default GFP_KERNEL arguments
2026-02-21 20:03:00 -08:00
fsl-dcu
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
gma500
drm/gma500: Create framebuffers with drm_gem_fb_create()
2026-03-03 09:28:56 +01:00
gud
drm/gud: Test for imported buffers with drm_gem_is_imported()
2026-03-05 08:14:09 +01:00
hisilicon
drm/hisilicon/hibmc: Adding reset colorbar cfg in dp init.
2026-01-20 10:53:14 +02:00
hyperv
drm/hyperv: Remove reference to hyperv_fb driver
2026-02-14 11:09:38 +01:00
i915
Merge v7.0-rc3 into drm-next
2026-03-11 11:18:31 +01:00
imagination
drm/gem-shmem: Track folio accessed/dirty status in vmap
2026-03-11 09:33:43 +01:00
imx
drm/imx: ipuv3-plane: support underlay plane
2026-03-13 16:27:06 +01:00
ingenic
Merge drm/drm-next into drm-misc-next
2026-02-23 11:48:20 +01:00
kmb
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
lima
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
logicvc
drm/logicvc: Fix device node reference leak in logicvc_drm_config_parse()
2026-02-10 15:18:36 +01:00
loongson
drm/loongson: use drm_gem_ttm_dumb_map_offset()
2026-03-11 09:40:07 +01:00
mcde
drm/mcde: dsi: convert to of_drm_find_and_get_bridge()
2026-02-23 10:10:34 +01:00
mediatek
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
meson
drm/meson/dw-hdmi: convert to of_drm_find_and_get_bridge()
2026-01-21 13:59:56 +01:00
mgag200
Convert more 'alloc_obj' cases to default GFP_KERNEL arguments
2026-02-21 20:03:00 -08:00
msm
Merge drm/drm-next into drm-misc-next
2026-02-23 11:48:20 +01:00
mxsfb
drm: lcdif: Use dev_err_probe()
2026-03-10 09:42:09 +08:00
nouveau
Merge v7.0-rc3 into drm-next
2026-03-11 11:18:31 +01:00
nova
…
omapdrm
Convert remaining multi-line kmalloc_obj/flex GFP_KERNEL uses
2026-02-22 08:26:33 -08:00
panel
drm/panel: novatek-nt36672a: Convert to mipi_dsi_*_multi() helpers
2026-03-13 08:42:44 -07:00
panfrost
drm/panfrost: Test for imported buffers with drm_gem_is_imported()
2026-03-02 11:51:41 +00:00
panthor
Merge drm/drm-next into drm-misc-next
2026-03-12 08:25:41 +01:00
pl111
BackMerge tag 'v6.19-rc7' into drm-next
2026-01-28 12:44:28 +10:00
qxl
dma-buf: inline spinlock for fence protection v5
2026-02-23 16:14:19 +01:00
radeon
Convert remaining multi-line kmalloc_obj/flex GFP_KERNEL uses
2026-02-22 08:26:33 -08:00
renesas
drm: renesas: rz-du: mipi_dsi: Convert to FIELD_MODIFY()
2026-03-13 07:00:37 +00:00
rockchip
Merge drm/drm-next into drm-misc-next
2026-02-23 11:48:20 +01:00
scheduler
Merge v7.0-rc3 into drm-next
2026-03-11 11:18:31 +01:00
sitronix
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
solomon
drm/solomon: Fix page start when updating rectangle in page addressing mode
2026-02-26 13:42:09 +01:00
sprd
…
sti
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
stm
…
sun4i
drm/sun4i: layers: Use drm_fb_dma_get_gem_addr() to get display memory
2026-03-14 16:08:51 +08:00
sysfb
Merge drm/drm-next into drm-misc-next
2026-02-23 11:48:20 +01:00
tegra
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
tests
Merge drm/drm-next into drm-misc-next
2026-02-23 11:48:20 +01:00
tidss
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
tilcdc
drm/tilcdc: Fix type mismatch
2026-03-17 17:50:49 +01:00
tiny
Merge drm/drm-fixes into drm-misc-fixes
2026-02-23 10:09:45 +01:00
ttm
drm/ttm/tests: add a test to exercise ttm_bo_swapout
2026-03-12 10:53:22 +00:00
tve200
…
tyr
Merge tag 'driver-core-7.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/driver-core/driver-core
2026-02-11 17:43:59 -08:00
udl
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
v3d
drm/v3d: Remove dedicated fence_lock
2026-03-13 18:02:32 -03:00
vboxvideo
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
vc4
drm/vc4: platform_get_irq_byname() returns an int
2026-03-05 20:55:16 -03:00
verisilicon
drm: verisilicon: suppress snprintf warning for pixel clock name
2026-02-09 10:44:36 +01:00
vgem
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
virtio
Merge drm/drm-next into drm-misc-next
2026-02-23 11:48:20 +01:00
vkms
Merge drm/drm-next into drm-misc-next
2026-02-23 11:48:20 +01:00
vmwgfx
Merge tag 'drm-misc-next-2026-02-26' of https://gitlab.freedesktop.org/drm/misc/kernel into drm-next
2026-03-02 16:58:07 +10:00
xe
Merge v7.0-rc3 into drm-next
2026-03-11 11:18:31 +01:00
xen
Convert remaining multi-line kmalloc_obj/flex GFP_KERNEL uses
2026-02-22 08:26:33 -08:00
xlnx
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
drm_atomic_helper.c
Merge drm/drm-next into drm-misc-next
2026-02-23 11:48:20 +01:00
drm_atomic_state_helper.c
Merge drm/drm-next into drm-misc-next
2026-02-23 11:48:20 +01:00
drm_atomic_uapi.c
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
drm_atomic.c
drm/atomic: Add affected colorops with affected planes
2026-03-16 08:33:07 +05:30
drm_auth.c
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
drm_blend.c
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
drm_bridge_helper.c
…
drm_bridge.c
Merge drm/drm-next into drm-misc-next
2026-02-23 11:48:20 +01:00
drm_buddy.c
Convert remaining multi-line kmalloc_obj/flex GFP_KERNEL uses
2026-02-22 08:26:33 -08:00
drm_cache.c
…
drm_client_event.c
…
drm_client_modeset.c
drm/client: Do not destroy NULL modes
2026-02-25 09:31:54 +02:00
drm_client_sysrq.c
…
drm_client.c
drm/client: Export drm_client_buffer_create()
2026-03-03 09:28:31 +01:00
drm_color_mgmt.c
…
drm_colorop.c
drm/colorop: Preserve bypass value in duplicate_state()
2026-03-16 08:33:05 +05:30
drm_connector.c
Merge drm/drm-next into drm-misc-next
2026-02-23 11:48:20 +01:00
drm_crtc_helper_internal.h
…
drm_crtc_helper.c
Convert remaining multi-line kmalloc_obj/flex GFP_KERNEL uses
2026-02-22 08:26:33 -08:00
drm_crtc_internal.h
…
drm_crtc.c
dma-buf: inline spinlock for fence protection v5
2026-02-23 16:14:19 +01:00
drm_damage_helper.c
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
drm_debugfs_crc.c
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
drm_debugfs.c
drm/debug: don't register files for unsupported HDMI InfoFrames
2026-01-19 13:11:47 +02:00
drm_displayid_internal.h
…
drm_displayid.c
…
drm_draw_internal.h
…
drm_draw.c
…
drm_drv.c
…
drm_dumb_buffers.c
…
drm_edid_load.c
…
drm_edid.c
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
drm_eld.c
…
drm_encoder.c
…
drm_exec.c
…
drm_fb_dma_helper.c
…
drm_fb_helper.c
drm/fbdev-emulation: Remove support for legacy emulation
2026-02-06 09:28:44 +01:00
drm_fbdev_dma.c
…
drm_fbdev_shmem.c
…
drm_fbdev_ttm.c
…
drm_file.c
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
drm_flip_work.c
treewide: Replace kmalloc with kmalloc_obj for non-scalar types
2026-02-21 01:02:28 -08:00
drm_format_helper.c
…
drm_format_internal.h
…
drm_fourcc.c
…
drm_framebuffer.c
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
drm_gem_atomic_helper.c
Convert more 'alloc_obj' cases to default GFP_KERNEL arguments
2026-02-21 20:03:00 -08:00
drm_gem_dma_helper.c
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
drm_gem_framebuffer_helper.c
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
drm_gem_shmem_helper.c
drm/gem-shmem: Track folio accessed/dirty status in vmap
2026-03-11 09:33:43 +01:00
drm_gem_ttm_helper.c
…
drm_gem_vram_helper.c
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
drm_gem.c
Merge drm/drm-next into drm-misc-next
2026-02-23 11:48:20 +01:00
drm_gpusvm.c
Merge tag 'drm-xe-next-2026-03-02' of https://gitlab.freedesktop.org/drm/xe/kernel into drm-next
2026-03-03 10:37:29 +10:00
drm_gpuvm.c
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
drm_internal.h
…
drm_ioc32.c
…
drm_ioctl.c
…
drm_kms_helper_common.c
…
drm_lease.c
Convert more 'alloc_obj' cases to default GFP_KERNEL arguments
2026-02-21 20:03:00 -08:00
drm_managed.c
…
drm_mipi_dbi.c
…
drm_mipi_dsi.c
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
drm_mm.c
…
drm_mode_config.c
drm: Clean up colorop objects during mode_config cleanup
2026-02-10 11:03:09 +05:30
drm_mode_object.c
drm/mode_object: add drm_object_immutable_property_get_value()
2026-01-14 02:18:31 +02:00
drm_modes.c
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
drm_modeset_helper.c
…
drm_modeset_lock.c
treewide: Replace kmalloc with kmalloc_obj for non-scalar types
2026-02-21 01:02:28 -08:00
drm_of.c
…
drm_pagemap_util.c
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
drm_pagemap.c
Revert "drm/pagemap: Disable device-to-device migration"
2026-03-04 08:53:37 -05:00
drm_panel_backlight_quirks.c
…
drm_panel_orientation_quirks.c
…
drm_panel.c
…
drm_panic_qr.rs
…
drm_panic.c
drm/panic: Fix expected string for QR_CODE in drm_panic_type_map
2026-01-09 08:53:27 +00:00
drm_pci.c
…
drm_plane_helper.c
Convert more 'alloc_obj' cases to default GFP_KERNEL arguments
2026-02-21 20:03:00 -08:00
drm_plane.c
Convert more 'alloc_obj' cases to default GFP_KERNEL arguments
2026-02-21 20:03:00 -08:00
drm_prime.c
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
drm_print.c
…
drm_privacy_screen_x86.c
…
drm_privacy_screen.c
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
drm_probe_helper.c
drm/probe-helper: replace use of system_wq with system_percpu_wq
2026-02-09 09:41:09 +01:00
drm_property.c
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
drm_rect.c
…
drm_self_refresh_helper.c
Merge drm/drm-next into drm-misc-next
2026-02-23 11:48:20 +01:00
drm_simple_kms_helper.c
…
drm_suballoc.c
Merge tag 'drm-xe-next-2026-03-02' of https://gitlab.freedesktop.org/drm/xe/kernel into drm-next
2026-03-03 10:37:29 +10:00
drm_syncobj.c
Revert "drm/syncobj: Fix handle <-> fd ioctls with dirty stack"
2026-03-05 15:16:48 +01:00
drm_sysfs.c
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
drm_trace_points.c
…
drm_trace.h
…
drm_vblank_helper.c
…
drm_vblank_work.c
…
drm_vblank.c
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
drm_vma_manager.c
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
drm_writeback.c
dma-buf: inline spinlock for fence protection v5
2026-02-23 16:14:19 +01:00
Kconfig
drm/panic: depends on PRINTK
2026-02-17 17:31:59 +01:00
Kconfig.debug
gpu: Move DRM buddy allocator one level up (part one)
2026-02-06 11:34:02 +10:00
Makefile
Merge drm/drm-next into drm-misc-next
2026-02-23 11:48:20 +01:00