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linux/drivers/gpu/drm
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Oleksandr Andrushchenko 2026a26807 drm/xen-front: Fix misused IS_ERR_OR_NULL checks 
commit 14dee05861 upstream.

The patch c575b7eeb8: "drm/xen-front: Add support for Xen PV
display frontend" from Apr 3, 2018, leads to the following static
checker warning:

	drivers/gpu/drm/xen/xen_drm_front_gem.c:140 xen_drm_front_gem_create()
	warn: passing zero to 'ERR_CAST'

drivers/gpu/drm/xen/xen_drm_front_gem.c
   133  struct drm_gem_object *xen_drm_front_gem_create(struct drm_device *dev,
   134                                                  size_t size)
   135  {
   136          struct xen_gem_object *xen_obj;
   137
   138          xen_obj = gem_create(dev, size);
   139          if (IS_ERR_OR_NULL(xen_obj))
   140                  return ERR_CAST(xen_obj);

Fix this and the rest of misused places with IS_ERR_OR_NULL in the
driver.

Fixes:  c575b7eeb8: "drm/xen-front: Add support for Xen PV display frontend"

Signed-off-by: Oleksandr Andrushchenko <oleksandr_andrushchenko@epam.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Dan Carpenter <dan.carpenter@oracle.com>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20200813062113.11030-3-andr2000@gmail.com
Signed-off-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-08-19 08:27:09 +02:00
..
amd
drm/amdgpu: ensure 0 is returned for success in jpeg_v2_5_wait_for_idle
2020-08-19 08:26:30 +02:00
arc
drm: convert .debugfs_init() hook to return void.
2020-03-18 17:53:28 +01:00
arm
drm/arm: fix unintentional integer overflow on left shift
2020-08-19 08:26:26 +02:00
armada
Merge tag 'drm-next-2020-06-02' of git://anongit.freedesktop.org/drm/drm
2020-06-02 15:04:15 -07:00
aspeed
drm/aspeed: Call drm_fbdev_generic_setup after drm_dev_register
2020-07-09 09:06:39 +02:00
ast
drm/ast: fix missing break in switch statement for format->cpp[0] case 4
2020-06-11 09:05:31 +02:00
atmel-hlcdc
drm/atmel-hlcdc: Use simple encoder
2020-04-02 14:16:44 +02:00
bochs
drm/drm_fb_helper: fix fbdev with sparc64
2020-07-27 16:47:46 +02:00
bridge
drm/bridge: sil_sii8620: initialize return of sii8620_readb
2020-08-19 08:26:34 +02:00
etnaviv
drm/etnaviv: Fix error path on failure to enable bus clk
2020-08-19 08:26:26 +02:00
exynos
drm/exynos: fix ref count leak in mic_pre_enable
2020-06-29 09:38:41 +09:00
fsl-dcu
drm/fsl-dcu: Use simple encoder
2020-04-02 14:16:44 +02:00
gma500
drm/gma500: Remove dead code
2020-04-21 09:02:29 +02:00
hisilicon
drm/hisilicon/hibmc: Move drm_fbdev_generic_setup() down to avoid the splat
2020-07-08 09:08:22 +00:00
i2c
drm/i2c/tda998x: Make tda998x_audio_digital_mute static
2020-05-09 23:06:07 +02:00
i810
drm/i810: Don't include <drm/drm_pci.h>
2019-12-05 08:44:12 +01:00
i915
drm/i915: Recalculate FBC w/a stride when needed
2020-07-14 20:31:45 +03:00
imx
drm/imx: tve: fix regulator_disable error path
2020-08-19 08:26:38 +02:00
ingenic
Merge tag 'drm-next-2020-06-02' of git://anongit.freedesktop.org/drm/drm
2020-06-02 15:04:15 -07:00
lib
…
lima
drm/lima: fix wait pp reset timeout
2020-07-20 08:46:06 +08:00
mcde
drm/mcde: Fix stability issue
2020-07-26 21:41:59 +02:00
mediatek
drm/mediatek: mtk_hdmi: Remove debug messages for function calls
2020-07-05 06:39:21 +08:00
meson
drm/meson: viu: fix setting the OSD burst length in VIU_OSD1_FIFO_CTRL_STAT
2020-07-02 10:36:56 +02:00
mga
drm/mga: Don't include <drm/drm_pci.h>
2019-12-05 08:44:16 +01:00
mgag200
drm/mgag200: Embed connector instance in struct mga_device
2020-05-11 16:40:44 +02:00
msm
drm/msm/dpu: don't use INTF_INPUT_CTRL feature on sdm845
2020-08-19 08:26:50 +02:00
mxsfb
drm/panel: decouple connector from drm_panel
2019-12-09 22:57:26 +01:00
nouveau
drm/ttm/nouveau: don't call tt destroy callback on alloc failure.
2020-08-19 08:27:04 +02:00
omapdrm
treewide: replace '---help---' in Kconfig files with 'help'
2020-06-14 01:57:21 +09:00
panel
drm: panel: simple: Fix bpc for LG LB070WV8 panel
2020-08-19 08:26:33 +02:00
panfrost
drm/panfrost: Fix inbalance of devfreq record_busy/idle()
2020-08-19 08:26:26 +02:00
pl111
drm: pl111: Move VExpress setup into versatile init
2020-04-28 14:06:20 -05:00
qxl
Merge tag 'drm-next-2020-06-02' of git://anongit.freedesktop.org/drm/drm
2020-06-02 15:04:15 -07:00
r128
drm: delete drm_pci.h
2020-04-03 17:11:41 +02:00
radeon
drm/radeon: fix array out-of-bounds read and write issues
2020-08-19 08:26:30 +02:00
rcar-du
drm: rcar-du: Fix build error
2020-06-21 05:12:57 +03:00
rockchip
drm/rockchip: Remove unneeded semicolon
2020-04-27 21:15:55 +02:00
savage
drm/savage: Don't include <drm/drm_pci.h>
2019-12-05 08:44:34 +01:00
scheduler
drm/scheduler: fix drm_sched_get_cleanup_job
2020-04-15 11:09:13 +02:00
selftests
drm/modes: Make sure to parse valid rotation value from cmdline
2020-02-12 18:32:54 +01:00
shmobile
drm/shmobile: Use simple encoder
2020-04-02 14:16:45 +02:00
sis
drm/sis: Don't include <drm/drm_pci.h>
2019-12-05 08:44:55 +01:00
sti
drm: convert .debugfs_init() hook to return void.
2020-03-18 17:53:28 +01:00
stm
drm/stm: repair runtime power management
2020-08-19 08:26:33 +02:00
sun4i
drm: sun4i: hdmi: Fix inverted HPD result
2020-07-17 14:03:59 +02:00
tdfx
drm/tdfx: Don't include <drm/drm_pci.h>
2019-12-05 08:45:01 +01:00
tegra
drm/tegra: Add zpos property for cursor planes
2020-06-16 19:03:25 +02:00
tidss
Merge tag 'drm-next-2020-06-02' of git://anongit.freedesktop.org/drm/drm
2020-06-02 15:04:15 -07:00
tilcdc
drm/tilcdc: fix leak & null ref in panel_connector_get_modes
2020-08-19 08:26:14 +02:00
tiny
drm/cirrus: Move to drm/tiny
2020-04-28 16:05:15 +02:00
ttm
drm/ttm/nouveau: don't call tt destroy callback on alloc failure.
2020-08-19 08:27:04 +02:00
tve200
drm: get drm_bridge_panel connector via helper
2019-12-09 22:57:26 +01:00
udl
drm/udl: Make udl_handle_damage static
2020-05-06 21:08:37 +02:00
v3d
drm/v3d: Delete v3d_dev->pdev
2020-04-28 15:15:59 +02:00
vboxvideo
drm/vboxvideo: Use devm_gen_pool_create
2020-04-28 15:08:51 +02:00
vc4
Merge tag 'drm-misc-next-2020-04-14' of git://anongit.freedesktop.org/drm/drm-misc into drm-next
2020-04-22 10:41:35 +10:00
vgem
drm: Garbage collect drm_dev_fini
2020-03-26 15:45:36 +01:00
via
Merge branch 'akpm' (patches from Andrew)
2020-01-31 12:16:36 -08:00
virtio
Merge tag 'drm-next-2020-06-02' of git://anongit.freedesktop.org/drm/drm
2020-06-02 15:04:15 -07:00
vkms
drm/vkms: Hold gem object while still in-use
2020-05-06 21:51:46 -04:00
vmwgfx
drm/vmwgfx: fix update of display surface when resolution changes
2020-07-14 04:05:52 +02:00
xen
drm/xen-front: Fix misused IS_ERR_OR_NULL checks
2020-08-19 08:27:09 +02:00
zte
drm/zte: Use simple encoder
2020-04-02 14:16:46 +02:00
drm_agpsupport.c
drm: use DIV_ROUND_UP helper macro for calculations
2019-11-04 18:17:36 +01:00
drm_atomic_helper.c
drm/bridge: Add the necessary bits to support bus format negotiation
2020-01-31 16:39:53 +01:00
drm_atomic_state_helper.c
drm/atomic-helper: fix kerneldoc
2020-02-15 13:21:22 +01:00
drm_atomic_uapi.c
drm/atomic: Spell CRTC consistently
2019-12-22 11:13:00 +01:00
drm_atomic.c
drm: convert .debugfs_init() hook to return void.
2020-03-18 17:53:28 +01:00
drm_auth.c
drm: error out with EBUSY when device has existing master
2020-03-30 12:20:41 +01:00
drm_blend.c
drm: plane: Verify that no or all planes have a zpos property
2020-05-14 02:10:52 +03:00
drm_bridge_connector.c
drm: Add helper to create a connector for a chain of bridges
2020-02-26 13:31:41 +02:00
drm_bridge.c
drm: Add helper to create a connector for a chain of bridges
2020-02-26 13:31:41 +02:00
drm_bufs.c
drm: delete drm_pci.h
2020-04-03 17:11:41 +02:00
drm_cache.c
drm/gpu: Fix Memory barrier without comment Issue
2019-10-25 09:35:06 +02:00
drm_client_modeset.c
Merge v5.6-rc5 into drm-next
2020-03-11 07:27:21 +10:00
drm_client.c
drm: convert .debugfs_init() hook to return void.
2020-03-18 17:53:28 +01:00
drm_color_mgmt.c
drm: Inline drm_color_lut_extract()
2019-11-29 21:29:17 +02:00
drm_connector.c
drm/connector: notify userspace on hotplug after register complete
2020-06-03 10:24:23 +02:00
drm_context.c
drm: context: Clean up documentation
2020-03-16 09:23:55 +01:00
drm_crtc_helper_internal.h
…
drm_crtc_helper.c
drm: drop unused drm_crtc callback
2020-02-15 21:15:17 +01:00
drm_crtc_internal.h
drm: convert .debugfs_init() hook to return void.
2020-03-18 17:53:28 +01:00
drm_crtc.c
…
drm_damage_helper.c
…
drm_debugfs_crc.c
drm/crc: Actually allow to change the crc source
2020-01-28 16:49:22 +01:00
drm_debugfs.c
drm/debugfs: fix plain echo to connector "force" attribute
2020-08-19 08:26:18 +02:00
drm_dma.c
drm: delete drm_pci.h
2020-04-03 17:11:41 +02:00
drm_dp_aux_dev.c
drm/dp_mst: Add MST support to DP DPCD R/W functions
2020-01-09 18:07:46 -05:00
drm_dp_cec.c
…
drm_dp_dual_mode_helper.c
…
drm_dp_helper.c
Merge tag 'drm-misc-next-fixes-2020-05-27' of git://anongit.freedesktop.org/drm/drm-misc into drm-next
2020-05-28 15:38:39 +10:00
drm_dp_mst_topology_internal.h
…
drm_dp_mst_topology.c
Merge tag 'drm-next-2020-06-02' of git://anongit.freedesktop.org/drm/drm
2020-06-02 15:04:15 -07:00
drm_drv.c
drm: Add devm_drm_dev_alloc macro
2020-04-28 15:05:19 +02:00
drm_dsc.c
…
drm_dumb_buffers.c
…
drm_edid_load.c
…
drm_edid.c
Merge tag 'drm-next-2020-06-02' of git://anongit.freedesktop.org/drm/drm
2020-06-02 15:04:15 -07:00
drm_encoder_slave.c
drm: encoder_slave: use new I2C API
2020-06-19 09:20:21 +02:00
drm_encoder.c
drm/bridge: Make the bridge chain a double-linked list
2019-12-09 10:03:01 +01:00
drm_fb_cma_helper.c
drm: Fix misspellings of "Analog Devices"
2020-04-21 08:15:03 +02:00
drm_fb_helper.c
drm/drm_fb_helper: fix fbdev with sparc64
2020-07-27 16:47:46 +02:00
drm_file.c
Merge tag 'drm-next-2020-06-02' of git://anongit.freedesktop.org/drm/drm
2020-06-02 15:04:15 -07:00
drm_flip_work.c
…
drm_format_helper.c
drm/format_helper: Dual licence the file in GPL 2 and MIT
2020-02-17 10:27:13 +01:00
drm_fourcc.c
drm/fourcc: Fill out all block sizes for P210
2019-11-28 11:19:32 +01:00
drm_framebuffer.c
drm: convert .debugfs_init() hook to return void.
2020-03-18 17:53:28 +01:00
drm_gem_cma_helper.c
…
drm_gem_framebuffer_helper.c
drm: Don't free a struct never allocated by drm_gem_fb_init()
2020-04-16 13:44:29 +02:00
drm_gem_shmem_helper.c
drm/shmem: drop pgprot_decrypted()
2020-03-02 07:13:19 +01:00
drm_gem_ttm_helper.c
drm/ttm: fix mmap refcounting
2019-11-15 08:00:08 +01:00
drm_gem_vram_helper.c
drm/vram-helpers: Merge code into a single file
2020-04-09 09:56:33 +02:00
drm_gem.c
drm/gem: Fix a leak in drm_gem_objects_lookup()
2020-08-19 08:26:23 +02:00
drm_hashtab.c
…
drm_hdcp.c
drm: Fix HDCP failures when SRM fw is missing
2020-05-05 14:01:53 -04:00
drm_internal.h
drm: Manage drm_vblank_cleanup with drmm_
2020-03-26 15:38:17 +01:00
drm_ioc32.c
…
drm_ioctl.c
Merge tag 'drm-next-2020-06-02' of git://anongit.freedesktop.org/drm/drm
2020-06-02 15:04:15 -07:00
drm_irq.c
drm/irq: remove check on dev->dev_private
2020-02-11 18:39:47 +02:00
drm_kms_helper_common.c
…
drm_lease.c
drm/lease: fix WARNING in idr_destroy
2020-03-18 14:42:18 +01:00
drm_legacy_misc.c
…
drm_legacy.h
…
drm_lock.c
drm: lock: Clean up documentation
2020-03-16 09:27:09 +01:00
drm_managed.c
drm/managed: Fix off-by-one in warning
2020-03-30 21:42:23 +02:00
drm_memory.c
…
drm_mipi_dbi.c
drm/dbi: Fix SPI Type 1 (9-bit) transfer
2020-07-27 20:29:44 +02:00
drm_mipi_dsi.c
drm/mipi: use dcs write for mipi_dsi_dcs_set_tear_scanline
2020-08-19 08:26:28 +02:00
drm_mm.c
drm/mm: fix hole size comparison
2020-08-19 08:26:24 +02:00
drm_mode_config.c
drm: Manage drm_mode_config_init with drmm_
2020-03-26 15:45:43 +01:00
drm_mode_object.c
drm: Replace drm_modeset_lock/unlock_all with DRM_MODESET_LOCK_ALL_* helpers
2020-05-05 10:51:56 +02:00
drm_modes.c
drm: Nuke mode->hsync
2020-04-29 18:44:26 +03:00
drm_modeset_helper.c
…
drm_modeset_lock.c
…
drm_of.c
drm: of: Fix double-free bug
2020-07-26 18:04:06 +02:00
drm_panel_orientation_quirks.c
drm: panel-orientation-quirks: Use generic orientation-data for Acer S1003
2020-06-23 12:32:06 +02:00
drm_panel.c
drm/drm_panel: Fix EXPORT of drm_panel_of_backlight() one more time
2019-12-17 20:39:33 +01:00
drm_pci.c
drm: delete drm_pci.h
2020-04-03 17:11:41 +02:00
drm_plane_helper.c
…
drm_plane.c
drm: plane: Verify that no or all planes have a zpos property
2020-05-14 02:10:52 +03:00
drm_prime.c
drm/prime: fix extracting of the DMA addresses from a scatterlist
2020-04-05 10:44:12 -04:00
drm_print.c
drm/print: convert debug category macros into an enum
2019-11-14 14:08:57 +02:00
drm_probe_helper.c
drm: Stop accessing encoder->bridge directly
2019-12-09 10:02:45 +01:00
drm_property.c
drm: limit to INT_MAX in create_blob ioctl
2019-12-04 19:44:13 -08:00
drm_rect.c
drm/rect: update kerneldoc for drm_rect_clip_scaled()
2019-11-28 13:15:43 +01:00
drm_scatter.c
gpu/drm: remove the powerpc hack in drm_legacy_sg_alloc
2020-06-02 10:59:11 -07:00
drm_scdc_helper.c
…
drm_self_refresh_helper.c
drm/atomic: fix self-refresh helpers crtc state dereference
2019-11-06 13:00:21 -05:00
drm_simple_kms_helper.c
drm/simple-kms: Fix documentation for drm_simple_encoder_init()
2020-03-06 09:24:29 +01:00
drm_syncobj.c
drm/syncobj: Add documentation for timeline syncobj
2020-01-20 14:22:21 +01:00
drm_sysfs.c
drm/connector: notify userspace on hotplug after register complete
2020-06-03 10:24:23 +02:00
drm_trace_points.c
…
drm_trace.h
…
drm_vblank.c
Merge tag 'drm-misc-next-fixes-2020-05-27' of git://anongit.freedesktop.org/drm/drm-misc into drm-next
2020-05-28 15:38:39 +10:00
drm_vm.c
mm: reorder includes after introduction of linux/pgtable.h
2020-06-09 09:39:13 -07:00
drm_vma_manager.c
…
drm_writeback.c
…
Kconfig
Merge tag 'drm-next-2020-06-02' of git://anongit.freedesktop.org/drm/drm
2020-06-02 15:04:15 -07:00
Makefile
drm/cirrus: Move to drm/tiny
2020-04-28 16:05:15 +02:00