Noralf Trønnes a89bfc5d9a tinydrm/mipi-dbi: Use dma-safe buffers for all SPI transfers ... Buffers passed to spi_sync() must be dma-safe even for tiny buffers since some SPI controllers use DMA for all transfers. Example splat with CONFIG_DMA_API_DEBUG enabled: [ 23.750467] DMA-API: dw_dmac_pci 0000:00:15.0: device driver maps memory from stack [probable addr=000000001e49185d] [ 23.750529] WARNING: CPU: 1 PID: 1296 at kernel/dma/debug.c:1161 check_for_stack+0xb7/0x190 [ 23.750533] Modules linked in: mmc_block(+) spi_pxa2xx_platform(+) pwm_lpss_pci pwm_lpss spi_pxa2xx_pci sdhci_pci cqhci intel_mrfld_pwrbtn extcon_intel_mrfld sdhci intel_mrfld_adc led_class mmc_core ili9341 mipi_dbi tinydrm backlight ti_ads7950 industrialio_triggered_buffer kfifo_buf intel_soc_pmic_mrfld hci_uart btbcm [ 23.750599] CPU: 1 PID: 1296 Comm: modprobe Not tainted 5.0.0-rc7+ #236 [ 23.750605] Hardware name: Intel Corporation Merrifield/BODEGA BAY, BIOS 542 2015.01.21:18.19.48 [ 23.750620] RIP: 0010:check_for_stack+0xb7/0x190 [ 23.750630] Code: 8b 6d 50 4d 85 ed 75 04 4c 8b 6d 10 48 89 ef e8 2f 8b 44 00 48 89 c6 4a 8d 0c 23 4c 89 ea 48 c7 c7 88 d0 82 b4 e8 40 7c f9 ff <0f> 0b 8b 05 79 00 4b 01 85 c0 74 07 5b 5d 41 5c 41 5d c3 8b 05 54 [ 23.750637] RSP: 0000:ffff97bbc0292fa0 EFLAGS: 00010286 [ 23.750646] RAX: 0000000000000000 RBX: ffff97bbc0290000 RCX: 0000000000000006 [ 23.750652] RDX: 0000000000000007 RSI: 0000000000000002 RDI: ffff94b33e115450 [ 23.750658] RBP: ffff94b33c8578b0 R08: 0000000000000002 R09: 00000000000201c0 [ 23.750664] R10: 00000006ecb0ccc6 R11: 0000000000034f38 R12: 000000000000316c [ 23.750670] R13: ffff94b33c84b250 R14: ffff94b33dedd5a0 R15: 0000000000000001 [ 23.750679] FS: 0000000000000000(0000) GS:ffff94b33e100000(0063) knlGS:00000000f7faf690 [ 23.750686] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 23.750691] CR2: 00000000f7f54faf CR3: 000000000722c000 CR4: 00000000001006e0 [ 23.750696] Call Trace: [ 23.750713] debug_dma_map_sg+0x100/0x340 [ 23.750727] ? dma_direct_map_sg+0x3b/0xb0 [ 23.750739] spi_map_buf+0x25a/0x300 [ 23.750751] __spi_pump_messages+0x2a4/0x680 [ 23.750762] __spi_sync+0x1dd/0x1f0 [ 23.750773] spi_sync+0x26/0x40 [ 23.750790] mipi_dbi_typec3_command_read+0x14d/0x240 [mipi_dbi] [ 23.750802] ? spi_finalize_current_transfer+0x10/0x10 [ 23.750821] mipi_dbi_typec3_command+0x1bc/0x1d0 [mipi_dbi] Reported-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Noralf Trønnes <noralf@tronnes.org> Tested-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Acked-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20190222124329.23046-1-noralf@tronnes.org		2019-03-20 12:02:41 +01:00
..
amd	Merge drm/drm-next into drm-misc-next	2019-03-06 09:22:18 -05:00
arc	drm: Split out drm_probe_helper.h	2019-01-24 13:20:42 +01:00
arm	drm/arm/malidp: Added support for AFBC modifiers for all layers except DE_SMART	2019-03-12 18:25:10 +00:00
armada	drm: Split out drm_probe_helper.h	2019-01-24 13:20:42 +01:00
ast	Merge branch 'drm-next-5.1' of git://people.freedesktop.org/~agd5f/linux into drm-next	2019-02-04 14:57:34 +10:00
atmel-hlcdc	drm/irq: Don't check for DRIVER_HAVE_IRQ in drm_irq_(un)install	2019-01-29 15:45:06 +01:00
bochs	Merge drm/drm-next into drm-misc-next	2019-03-06 09:22:18 -05:00
bridge	Linux 5.0-rc7	2019-02-18 13:27:15 +10:00
cirrus	drm/cirrus: add plane setup	2019-02-05 10:28:13 +01:00
etnaviv	drm: etnaviv: Switch to use drm_gem_object reservation_object	2019-02-19 11:08:40 +01:00
exynos	drm/exynos: Change Andrzej Pietrasiewicz's e-mail address	2019-02-07 19:59:44 +09:00
fsl-dcu	drm/irq: Don't check for DRIVER_HAVE_IRQ in drm_irq_(un)install	2019-01-29 15:45:06 +01:00
gma500	drm/irq: Ditch DRIVER_IRQ_SHARED	2019-01-29 15:45:21 +01:00
hisilicon	drm/irq: Don't check for DRIVER_HAVE_IRQ in drm_irq_(un)install	2019-01-29 15:45:06 +01:00
i2c	drm: Split out drm_probe_helper.h	2019-01-24 13:20:42 +01:00
i810
i915	Add support for floating point half-width formats.	2019-03-13 14:08:05 -04:00
imx	Merge drm/drm-next into drm-misc-next	2019-03-06 09:22:18 -05:00
lib
mediatek	drm: Split out drm_probe_helper.h	2019-01-24 13:20:42 +01:00
meson	drm/meson: exclusively use the canvas provider module	2019-03-20 09:28:39 +01:00
mga	drm/irq: Ditch DRIVER_IRQ_SHARED	2019-01-29 15:45:21 +01:00
mgag200	Merge branch 'drm-next-5.1' of git://people.freedesktop.org/~agd5f/linux into drm-next	2019-02-04 14:57:34 +10:00
msm	Merge drm/drm-next into drm-misc-next	2019-03-06 09:22:18 -05:00
mxsfb	drm/irq: Don't check for DRIVER_HAVE_IRQ in drm_irq_(un)install	2019-01-29 15:45:06 +01:00
nouveau	drm/nouveau/dmem: use dma addresses during migration copies	2019-02-20 09:00:03 +10:00
omapdrm	Linux 5.0-rc7	2019-02-18 13:27:15 +10:00
panel	drm/panel: Add Ronbo RB070D30 panel	2019-02-26 15:58:53 +01:00
pl111	drm: Split out drm_probe_helper.h	2019-01-24 13:20:42 +01:00
qxl	drm/qxl: remove set but not used variable 'bo_old'	2019-02-21 13:04:16 +01:00
r128	drm/irq: Ditch DRIVER_IRQ_SHARED	2019-01-29 15:45:21 +01:00
radeon	Merge drm/drm-next into drm-misc-next	2019-03-06 09:22:18 -05:00
rcar-du	Merge drm/drm-next into drm-misc-next	2019-02-11 10:35:35 +01:00
rockchip	Linux 5.0-rc7	2019-02-18 13:27:15 +10:00
savage	drm/savage: mark expected switch fall-throughs	2019-01-30 17:35:29 +01:00
scheduler	Merge branch 'drm-next-5.1' of git://people.freedesktop.org/~agd5f/linux into drm-next	2019-02-22 15:56:42 +10:00
selftests	drm/selftest: fix spelling mistake "dimention" -> "dimension"	2018-12-11 15:19:42 +01:00
shmobile	drm/irq: Don't check for DRIVER_HAVE_IRQ in drm_irq_(un)install	2019-01-29 15:45:06 +01:00
sis
sti	drm: Split out drm_probe_helper.h	2019-01-24 13:20:42 +01:00
stm	drm/stm: fix CONFIG_FB dependency	2019-03-11 15:40:29 +01:00
sun4i	drm/sun4i: mixer: Simplify the get_id logic	2019-03-15 09:37:02 +01:00
tdfx
tegra	drm/tegra: Changes for v5.1-rc1	2019-02-11 13:32:49 +10:00
tilcdc	drm/irq: Don't check for DRIVER_HAVE_IRQ in drm_irq_(un)install	2019-01-29 15:45:06 +01:00
tinydrm	tinydrm/mipi-dbi: Use dma-safe buffers for all SPI transfers	2019-03-20 12:02:41 +01:00
ttm	drm/ttm: Remove ttm_bo_reference and ttm_bo_unref	2019-01-28 11:43:38 -05:00
tve200	drm: Split out drm_probe_helper.h	2019-01-24 13:20:42 +01:00
udl	drm/drv: drm_dev_unplug(): Move out drm_dev_put() call	2019-02-21 12:11:58 +01:00
v3d	drm/v3d: Use the new shmem helpers to reduce driver boilerplate.	2019-03-14 12:06:44 -07:00
vboxvideo	drm/vboxvideo: Remove unused including <linux/version.h>	2019-03-20 10:16:40 +01:00
vc4	drm/vc4: Use 16bpp by default for the fbdev buffer	2019-03-07 11:48:28 +01:00
vgem	dma-buf: make fence sequence numbers 64 bit v2	2018-12-07 12:44:16 +01:00
via	drm/via: mark expected switch fall-throughs	2019-01-30 17:35:29 +01:00
virtio	drm/virtio: implement prime export	2019-02-28 09:09:02 +01:00
vkms	Linux 5.0-rc7	2019-02-18 13:27:15 +10:00
vmwgfx	Linux 5.0-rc7	2019-02-18 13:27:15 +10:00
xen	drm/drv: drm_dev_unplug(): Move out drm_dev_put() call	2019-02-21 12:11:58 +01:00
zte	drm: Split out drm_probe_helper.h	2019-01-24 13:20:42 +01:00
ati_pcigart.c	drm/ati_pcigart: Fix error code in drm_ati_pcigart_init()	2018-12-17 10:47:17 +01:00
drm_agpsupport.c	drm: Trivial comment grammar cleanups	2019-02-04 10:21:17 +01:00
drm_atomic_helper.c	gpu: drm: atomic_helper: Fix spelling errors	2019-03-13 17:54:40 +02:00
drm_atomic_state_helper.c	drm: Put damage blob when destroy plane state	2018-12-24 11:53:50 +01:00
drm_atomic_uapi.c	drm: Add HDMI colorspace property	2019-02-19 18:50:55 +01:00
drm_atomic.c	drm-misc-next for 5.1:	2019-01-10 05:58:52 +10:00
drm_auth.c	drm: set is_master to 0 upon drm_new_set_master() failure	2018-11-26 16:14:27 -05:00
drm_blend.c
drm_bridge.c	drm: bridge: Constify mode arguments to bridge .mode_set() operation	2019-01-14 03:51:14 +02:00
drm_bufs.c	drm: Trivial comment grammar cleanups	2019-02-04 10:21:17 +01:00
drm_cache.c
drm_client.c	drm/gem: Add drm_gem_object_funcs	2018-11-20 14:56:18 +01:00
drm_color_mgmt.c	drm: Constify drm_color_lut_check()	2019-01-29 23:26:12 +02:00
drm_connector.c	drm/dp: Set the connector's TILE property even for DP SST connectors	2019-03-14 11:33:17 -07:00
drm_context.c	drm: Fix error handling in drm_legacy_addctx	2019-01-07 11:26:31 +01:00
drm_crtc_helper_internal.h
drm_crtc_helper.c	drm: Remove use of drm_mode_object	2019-01-15 13:20:56 +01:00
drm_crtc_internal.h	drm: Unexport drm_crtc_force_disable	2019-01-11 15:56:40 +01:00
drm_crtc.c	drm: Move the legacy kms disable_all helper to crtc helpers	2019-01-11 22:54:29 +01:00
drm_damage_helper.c	drm: prepare for drmP.h removal from drm_modeset_helper.h	2019-02-07 21:48:28 +01:00
drm_debugfs_crc.c
drm_debugfs.c	drm: Merge drm_info.c into drm_debugfs.c	2018-11-22 09:52:27 +01:00
drm_dma.c
drm_dp_aux_dev.c
drm_dp_cec.c
drm_dp_dual_mode_helper.c
drm_dp_helper.c	drm/dsc: Add kernel documentation for DRM DP DSC helpers	2019-02-08 13:38:51 -08:00
drm_dp_mst_topology.c	drm/dp: Set the connector's TILE property even for DP SST connectors	2019-03-14 11:33:17 -07:00
drm_drv.c	drm/drv: DOC: Add driver example code	2019-03-04 15:23:34 +01:00
drm_dsc.c	drm/dsc: Split DSC PPS and SDP header initialisations	2019-03-05 13:24:34 -05:00
drm_dumb_buffers.c
drm_edid_load.c
drm_edid.c	drm: add non-desktop quirks to Sensics and OSVR headsets.	2019-03-15 10:46:53 +00:00
drm_encoder_slave.c
drm_encoder.c
drm_fb_cma_helper.c	drm/cma-helper: Remove unused fbdev code	2019-01-17 10:56:38 +01:00
drm_fb_helper.c	drm/fb-helper: generic: Don't take module ref for fbcon	2019-02-21 12:24:28 +01:00
drm_file.c	Merge drm/drm-next into drm-misc-next	2019-03-06 09:22:18 -05:00
drm_flip_work.c	drm: move drm_can_sleep() to drm_util.h	2019-01-14 10:58:37 +01:00
drm_fourcc.c	Add support for floating point half-width formats.	2019-03-13 14:08:05 -04:00
drm_framebuffer.c	drm: Trivial comment grammar cleanups	2019-02-04 10:21:17 +01:00
drm_gem_cma_helper.c	drm/cma-helper: Add DRM_GEM_CMA_VMAP_DRIVER_OPS	2018-11-20 14:57:25 +01:00
drm_gem_framebuffer_helper.c	drm/gem-fb-helper: Add drm_gem_fb_create_with_dirty()	2019-01-17 10:56:45 +01:00
drm_gem_shmem_helper.c	drm: Add library for shmem backed GEM objects	2019-03-14 12:06:44 -07:00
drm_gem.c	drm: Add helpers for locking an array of BO reservations.	2019-03-14 09:22:57 -07:00
drm_hashtab.c
drm_internal.h	drm-misc-next for 5.1:	2019-01-10 05:58:52 +10:00
drm_ioc32.c
drm_ioctl.c	drm: allow render capable master with DRM_AUTH ioctls	2019-02-13 17:42:36 +00:00
drm_irq.c	drm/irq: Ditch DRIVER_IRQ_SHARED	2019-01-29 15:45:21 +01:00
drm_kms_helper_common.c	drm: fix spelling mistake "intead" -> "instead"	2019-03-04 11:18:50 -05:00
drm_lease.c	Linux 5.0-rc7	2019-02-18 13:27:15 +10:00
drm_legacy.h
drm_lock.c
drm_memory.c	drm: change func to better detect wether swiotlb is needed	2019-02-20 13:29:29 +01:00
drm_mipi_dsi.c
drm_mm.c	drm: Trivial comment grammar cleanups	2019-02-04 10:21:17 +01:00
drm_mode_config.c	drm-misc-next for 5.1:	2019-01-10 05:58:52 +10:00
drm_mode_object.c	gpu/drm: Fix lock held when returning to user space.	2019-01-10 11:31:58 +01:00
drm_modes.c	Linux 5.0-rc7	2019-02-18 13:27:15 +10:00
drm_modeset_helper.c	drm: prepare for drmP.h removal from drm_modeset_helper.h	2019-02-07 21:48:28 +01:00
drm_modeset_lock.c	drm/atomic: integrate modeset lock with private objects	2018-12-11 15:24:30 +01:00
drm_of.c	drm/of: Fix kerneldoc	2019-01-12 13:07:58 +01:00
drm_panel_orientation_quirks.c	drm: panel-orientation-quirks: Add quirk for Lenovo Ideapad D330	2019-03-01 09:15:55 +02:00
drm_panel.c	drm/panel: Small documentation polish	2019-01-12 13:08:12 +01:00
drm_pci.c	cross-tree: phase out dma_zalloc_coherent()	2019-01-08 07:58:37 -05:00
drm_plane_helper.c
drm_plane.c	drm: Auto-set allow_fb_modifiers when given modifiers at plane init	2019-01-11 16:53:55 +01:00
drm_prime.c	drm: Add reservation_object to drm_gem_object	2019-02-19 11:08:40 +01:00
drm_print.c
drm_probe_helper.c	drm: Split out drm_probe_helper.h	2019-01-24 13:20:42 +01:00
drm_property.c	drm: Trivial comment grammar cleanups	2019-02-04 10:21:17 +01:00
drm_rect.c	drm: Nuke drm_calc_{h,v}scale_relaxed()	2019-02-07 13:14:06 +02:00
drm_scatter.c
drm_scdc_helper.c
drm_simple_kms_helper.c	drm: Split out drm_probe_helper.h	2019-01-24 13:20:42 +01:00
drm_syncobj.c	drm: export drm_timeout_abs_to_jiffies	2019-03-07 12:00:30 -06:00
drm_sysfs.c	drm/lease: Send a distinct uevent	2018-11-30 10:57:18 +01:00
drm_trace_points.c
drm_trace.h
drm_vblank.c	drm: Trivial comment grammar cleanups	2019-02-04 10:21:17 +01:00
drm_vm.c	drm/drm_vm: Mark expected switch fall-throughs	2019-02-19 12:20:41 +01:00
drm_vma_manager.c
drm_writeback.c
Kconfig	drm: Add library for shmem backed GEM objects	2019-03-14 12:06:44 -07:00
Makefile	drm: Add library for shmem backed GEM objects	2019-03-14 12:06:44 -07:00