dri-devel January 2018

dri-devel@lists.freedesktop.org

226 participants
1677 discussions

[PATCH 1/4 v6] drm/bridge: Add bindings for TI THS8134
by Linus Walleij 11 Jan '18

11 Jan '18

This adds device tree bindings for the Texas Instruments THS8134, THS8134A and THS8134B VGA DACs by extending and renaming the existing bindings for THS8135. These DACs are used for the VGA outputs on the ARM reference designs such as Integrator, Versatile and RealView. Cc: devicetree(a)vger.kernel.org Cc: Bartosz Golaszewski <bgolaszewski(a)baylibre.com> Acked-by: Rob Herring <robh(a)kernel.org> Reviewed-by: Laurent Pinchart <laurent.pinchart(a)ideasonboard.com> Signed-off-by: Linus Walleij <linus.walleij(a)linaro.org> --- ChangeLog v5->v6: - Fix the more-to-less specific compatible strings. - Fix some speling. - Collect Laurent's review tag. ChangeLog v2->v5: - Dropped the "ti,ths813x" as it turns out we need precise info about the sub-variant anyways as they all very in timings. - Refine the THS8134 variants, it turns out ths8134, ths8134a and ths8134b are three different variants of ths8134. ChangeLog v1->v2: - Introduce specific-to-general compatible string: compatible = "ti,ths8134a", "ti,ths813x"; so drivers can handle the whole family the same way. - Collected Rob's ACK. --- .../display/bridge/{ti,ths8135.txt => ti,ths813x.txt} | 13 +++++++++---- 1 file changed, 9 insertions(+), 4 deletions(-) rename Documentation/devicetree/bindings/display/bridge/{ti,ths8135.txt => ti,ths813x.txt} (69%) diff --git a/Documentation/devicetree/bindings/display/bridge/ti,ths8135.txt b/Documentation/devicetree/bindings/display/bridge/ti,ths813x.txt similarity index 69% rename from Documentation/devicetree/bindings/display/bridge/ti,ths8135.txt rename to Documentation/devicetree/bindings/display/bridge/ti,ths813x.txt index 6ec1a880ac18..df3d7c1ac09e 100644 --- a/Documentation/devicetree/bindings/display/bridge/ti,ths8135.txt +++ b/Documentation/devicetree/bindings/display/bridge/ti,ths813x.txt @@ -1,11 +1,16 @@ -THS8135 Video DAC ------------------ +THS8134 and THS8135 Video DAC +----------------------------- -This is the binding for Texas Instruments THS8135 Video DAC bridge. +This is the binding for Texas Instruments THS8134, THS8134A, THS8134B and +THS8135 Video DAC bridges. Required properties: -- compatible: Must be "ti,ths8135" +- compatible: Must be one of + "ti,ths8134" + "ti,ths8134a," "ti,ths8134" + "ti,ths8134b", "ti,ths8134" + "ti,ths8135" Required nodes: -- 2.14.3

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[PATCH v2] drm/amdkfd: Fix potential NULL pointer dereferences
by Gustavo A. R. Silva 11 Jan '18

11 Jan '18

In case kfd_get_process_device_data returns null, there are some null pointer dereferences in functions kfd_bind_processes_to_device and kfd_unbind_processes_from_device. Fix this by printing a WARN_ON for PDDs that aren't found and skip them with continue statements. Addresses-Coverity-ID: 1463794 ("Dereference null return value") Addresses-Coverity-ID: 1463772 ("Dereference null return value") Suggested-by: Felix Kuehling <felix.kuehling(a)amd.com> Signed-off-by: Gustavo A. R. Silva <garsilva(a)embeddedor.com> --- Changes in v2: Print a WARN_ON and skip PDDs that aren't found instead of returning an error. drivers/gpu/drm/amd/amdkfd/kfd_process.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_process.c b/drivers/gpu/drm/amd/amdkfd/kfd_process.c index a22fb071..4ff5f0f 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_process.c +++ b/drivers/gpu/drm/amd/amdkfd/kfd_process.c @@ -461,7 +461,8 @@ int kfd_bind_processes_to_device(struct kfd_dev *dev) hash_for_each_rcu(kfd_processes_table, temp, p, kfd_processes) { mutex_lock(&p->mutex); pdd = kfd_get_process_device_data(dev, p); - if (pdd->bound != PDD_BOUND_SUSPENDED) { + + if (WARN_ON(!pdd) || pdd->bound != PDD_BOUND_SUSPENDED) { mutex_unlock(&p->mutex); continue; } @@ -501,6 +502,11 @@ void kfd_unbind_processes_from_device(struct kfd_dev *dev) mutex_lock(&p->mutex); pdd = kfd_get_process_device_data(dev, p); + if (WARN_ON(!pdd)) { + mutex_unlock(&p->mutex); + continue; + } + if (pdd->bound == PDD_BOUND) pdd->bound = PDD_BOUND_SUSPENDED; mutex_unlock(&p->mutex); -- 2.7.4

2 2

[PATCH 00/10] Xilinx ZynqMP DisplayPort subsystem DRM KMS driver
by Hyun Kwon 11 Jan '18

11 Jan '18

Hi, This patchset adds the DRM KMS driver for Xilinx ZynqMP DisplayPort subsystem. The Xilinx ZynqMP SoC has a hardened full display pipeline which supports blending of up to 2 planes, and the encoder is DisplayPort v1.2 compatible. This series mainly includes 2 sets: Xilinx DRM KMS (patch 1/10 - 5/10) and ZynqMP DP subsystem drivers (patch 6/10 - 10/10). The Xilinx DRM KMS is intended as a common layer shared across other (upcoming) Xilinx sub-drivers. It helps sub-drivers for both hardened as well as soft IPs interoperate together. ZynqMP DP subsystem driver is a sub-driver that implements corresponding drm objects (crtc, plane, encoder, connector,,,) for ZynqMP SoC display pipeline. The entire pipeline is mainly partitioned into 2 blocks: generic display logic (zynqmp_disp.c) such as blending, csc,,, and the DP transmitter logic (zynqmp_dp.c). Thanks, -hyun Hyun Kwon (10): dt-bindings: display: xlnx: Add Xilinx kms bindings drm: xlnx: Add xlnx crtc of Xilinx DRM KMS drm: xlnx: Add xlnx fb of Xilinx DRM KMS drm: xlnx: Add xlnx gem of Xilinx DRM KMS drm: xlnx: Xilinx DRM KMS driver dt-bindings: display: xlnx: Add ZynqMP DP subsystem bindings drm: xlnx: DRM KMS driver for Xilinx ZynqMP DP subsystem display drm: xlnx: DRM KMS driver for Xilinx ZynqMP DisplayPort drm: xlnx: ZynqMP DP subsystem DRM KMS driver drm: xlnx: zynqmp: Add debugfs .../devicetree/bindings/display/xlnx/xlnx,kms.txt | 20 + .../bindings/display/xlnx/xlnx,zynqmp-dpsub.txt | 94 + MAINTAINERS | 8 + drivers/gpu/drm/Kconfig | 2 + drivers/gpu/drm/Makefile | 1 + drivers/gpu/drm/xlnx/Kconfig | 44 + drivers/gpu/drm/xlnx/Makefile | 5 + drivers/gpu/drm/xlnx/xlnx_crtc.c | 195 ++ drivers/gpu/drm/xlnx/xlnx_crtc.h | 70 + drivers/gpu/drm/xlnx/xlnx_drv.c | 436 +++ drivers/gpu/drm/xlnx/xlnx_drv.h | 22 + drivers/gpu/drm/xlnx/xlnx_fb.c | 468 +++ drivers/gpu/drm/xlnx/xlnx_fb.h | 30 + drivers/gpu/drm/xlnx/xlnx_gem.c | 39 + drivers/gpu/drm/xlnx/xlnx_gem.h | 18 + drivers/gpu/drm/xlnx/zynqmp_disp.c | 3261 ++++++++++++++++++++ drivers/gpu/drm/xlnx/zynqmp_disp.h | 28 + drivers/gpu/drm/xlnx/zynqmp_dp.c | 2168 +++++++++++++ drivers/gpu/drm/xlnx/zynqmp_dp.h | 29 + drivers/gpu/drm/xlnx/zynqmp_dpsub.c | 141 + drivers/gpu/drm/xlnx/zynqmp_dpsub.h | 19 + 21 files changed, 7098 insertions(+) create mode 100644 Documentation/devicetree/bindings/display/xlnx/xlnx,kms.txt create mode 100644 Documentation/devicetree/bindings/display/xlnx/xlnx,zynqmp-dpsub.txt create mode 100644 drivers/gpu/drm/xlnx/Kconfig create mode 100644 drivers/gpu/drm/xlnx/Makefile create mode 100644 drivers/gpu/drm/xlnx/xlnx_crtc.c create mode 100644 drivers/gpu/drm/xlnx/xlnx_crtc.h create mode 100644 drivers/gpu/drm/xlnx/xlnx_drv.c create mode 100644 drivers/gpu/drm/xlnx/xlnx_drv.h create mode 100644 drivers/gpu/drm/xlnx/xlnx_fb.c create mode 100644 drivers/gpu/drm/xlnx/xlnx_fb.h create mode 100644 drivers/gpu/drm/xlnx/xlnx_gem.c create mode 100644 drivers/gpu/drm/xlnx/xlnx_gem.h create mode 100644 drivers/gpu/drm/xlnx/zynqmp_disp.c create mode 100644 drivers/gpu/drm/xlnx/zynqmp_disp.h create mode 100644 drivers/gpu/drm/xlnx/zynqmp_dp.c create mode 100644 drivers/gpu/drm/xlnx/zynqmp_dp.h create mode 100644 drivers/gpu/drm/xlnx/zynqmp_dpsub.c create mode 100644 drivers/gpu/drm/xlnx/zynqmp_dpsub.h -- 2.7.4

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[PATCH 2/3] drm: rcar-du: add model field to struct rcar_du_device_info
by Sergei Shtylyov 11 Jan '18

11 Jan '18

In order to add the R-Car V3M (R8A77970) support to the DU driver we'd need to keep track not only of the SoC generation but also of the exact model (for the LVDS encoder support). Therefore add the 'model' field to the 'struct rcar_du_device_info' and initialize it accordingly for the already supported SoCs. Signed-off-by: Sergei Shtylyov <sergei.shtylyov(a)cogentembedded.com> --- drivers/gpu/drm/rcar-du/rcar_du_drv.c | 9 +++++++++ drivers/gpu/drm/rcar-du/rcar_du_drv.h | 14 ++++++++++++++ 2 files changed, 23 insertions(+) Index: linux/drivers/gpu/drm/rcar-du/rcar_du_drv.c =================================================================== --- linux.orig/drivers/gpu/drm/rcar-du/rcar_du_drv.c +++ linux/drivers/gpu/drm/rcar-du/rcar_du_drv.c @@ -37,6 +37,7 @@ static const struct rcar_du_device_info rzg1_du_r8a7743_info = { .gen = 2, + .model = R8A7743, .features = RCAR_DU_FEATURE_CRTC_IRQ_CLOCK | RCAR_DU_FEATURE_EXT_CTRL_REGS, .num_crtcs = 2, @@ -58,6 +59,7 @@ static const struct rcar_du_device_info static const struct rcar_du_device_info rzg1_du_r8a7745_info = { .gen = 2, + .model = R8A7745, .features = RCAR_DU_FEATURE_CRTC_IRQ_CLOCK | RCAR_DU_FEATURE_EXT_CTRL_REGS, .num_crtcs = 2, @@ -79,6 +81,7 @@ static const struct rcar_du_device_info static const struct rcar_du_device_info rcar_du_r8a7779_info = { .gen = 2, + .model = R8A7779, .features = 0, .num_crtcs = 2, .routes = { @@ -100,6 +103,7 @@ static const struct rcar_du_device_info static const struct rcar_du_device_info rcar_du_r8a7790_info = { .gen = 2, + .model = R8A7790, .features = RCAR_DU_FEATURE_CRTC_IRQ_CLOCK | RCAR_DU_FEATURE_EXT_CTRL_REGS, .quirks = RCAR_DU_QUIRK_ALIGN_128B | RCAR_DU_QUIRK_LVDS_LANES, @@ -128,6 +132,7 @@ static const struct rcar_du_device_info /* M2-W (r8a7791) and M2-N (r8a7793) are identical */ static const struct rcar_du_device_info rcar_du_r8a7791_info = { .gen = 2, + .model = R8A7791, .features = RCAR_DU_FEATURE_CRTC_IRQ_CLOCK | RCAR_DU_FEATURE_EXT_CTRL_REGS, .num_crtcs = 2, @@ -150,6 +155,7 @@ static const struct rcar_du_device_info static const struct rcar_du_device_info rcar_du_r8a7792_info = { .gen = 2, + .model = R8A7792, .features = RCAR_DU_FEATURE_CRTC_IRQ_CLOCK | RCAR_DU_FEATURE_EXT_CTRL_REGS, .num_crtcs = 2, @@ -169,6 +175,7 @@ static const struct rcar_du_device_info static const struct rcar_du_device_info rcar_du_r8a7794_info = { .gen = 2, + .model = R8A7794, .features = RCAR_DU_FEATURE_CRTC_IRQ_CLOCK | RCAR_DU_FEATURE_EXT_CTRL_REGS, .num_crtcs = 2, @@ -191,6 +198,7 @@ static const struct rcar_du_device_info static const struct rcar_du_device_info rcar_du_r8a7795_info = { .gen = 3, + .model = R8A7795, .features = RCAR_DU_FEATURE_CRTC_IRQ_CLOCK | RCAR_DU_FEATURE_EXT_CTRL_REGS | RCAR_DU_FEATURE_VSP1_SOURCE, @@ -223,6 +231,7 @@ static const struct rcar_du_device_info static const struct rcar_du_device_info rcar_du_r8a7796_info = { .gen = 3, + .model = R8A7796, .features = RCAR_DU_FEATURE_CRTC_IRQ_CLOCK | RCAR_DU_FEATURE_EXT_CTRL_REGS | RCAR_DU_FEATURE_VSP1_SOURCE, Index: linux/drivers/gpu/drm/rcar-du/rcar_du_drv.h =================================================================== --- linux.orig/drivers/gpu/drm/rcar-du/rcar_du_drv.h +++ linux/drivers/gpu/drm/rcar-du/rcar_du_drv.h @@ -49,9 +49,22 @@ struct rcar_du_output_routing { unsigned int port; }; +enum rcar_du_model { + R8A7743, + R8A7745, + R8A7779, + R8A7790, + R8A7791, + R8A7792, + R8A7794, + R8A7795, + R8A7796, +}; + /* * struct rcar_du_device_info - DU model-specific information * @gen: device generation (2 or 3) + * @model: device model * @features: device features (RCAR_DU_FEATURE_*) * @quirks: device quirks (RCAR_DU_QUIRK_*) * @num_crtcs: total number of CRTCs @@ -60,6 +73,7 @@ struct rcar_du_output_routing { */ struct rcar_du_device_info { unsigned int gen; + enum rcar_du_model model; unsigned int features; unsigned int quirks; unsigned int num_crtcs;

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[PATCH 0/3] Add R-Car V3M (R8A77970) support to the DU driver
by Sergei Shtylyov 11 Jan '18

11 Jan '18

Hello! Here's the set of 3 patches against the 'drm-next' branch of David Airlie's 'linux.git' repo plus the patch fixing LVDCR1 for R-Car gen3 posted recently. The main purpose of these patches is to add the R-Car V3M (R8A77970) support to the DU driver, we have to do some refactoring first to achieve this goal... [1/3] drm: rcar-du: lvds: refactor LVDS startup [2/3] drm: rcar-du: add 'model' field to 'struct rcar_du_device_info' [3/3] drm: rcar-du: add R8A77970 support MBR, Sergei

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[GIT PULL] drm/tegra: Fixes for v4.15-rc1
by Thierry Reding 11 Jan '18

11 Jan '18

Hi Dave, Merge branch 'linux-4.15' of git://github.com/skeggsb/linux into drm-fixes (2018-01-09 12:03:10 +1000) are available in the Git repository at: git://anongit.freedesktop.org/tegra/linux tags/drm/tegra/for-4.15-rc8 for you to fetch changes up to d780537f9b49e9d714a454e5ed989d909beab8ec: drm/tegra: sor: Fix hang on Tegra124 eDP (2018-01-10 13:04:58 +0100) Thanks, Thierry ---------------------------------------------------------------- drm/tegra: Fixes for v4.15-rc8 A single fix for a Tegra124 eDP regression introduced by the SOR changes in v4.15-rc1. ---------------------------------------------------------------- Thierry Reding (1): drm/tegra: sor: Fix hang on Tegra124 eDP drivers/gpu/drm/tegra/sor.c | 3 +++ 1 file changed, 3 insertions(+)

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[GIT PULL] drm/tegra: Changes for v4.16-rc1 (with fixes)
by Thierry Reding 11 Jan '18

11 Jan '18

Hi Dave, The following changes since commit ebae8d07435ae91314f4a28d69b530d09c625815: drm/tegra: dc: Implement legacy blending (2017-12-21 14:55:55 +0100) are available in the Git repository at: git://anongit.freedesktop.org/tegra/linux tags/drm/tegra/for-4.16-rc1-fixes for you to fetch changes up to 8f62142e490d761ceb92b55a7c05bb79294d6c6c: drm/tegra: dc: Properly cleanup overlay planes (2018-01-08 16:24:13 +0100) This has fixes for the issues that Dmitry had pointed out in response to my first pull request. It is based on top of my earlier pull request, so I've only included the shortlog of the changes since then. It should be safe to pull only this one in order to get all of the other changes as well. Thanks, Thierry ---------------------------------------------------------------- drm/tegra: Changes for v4.16-rc1 The bulk of these changes are preparation work and addition of support for Tegra186. Currently only HDMI output (the primary output on Jetson TX2) is supported, but the hardware is also capable of doing DSI and DisplayPort. Tegra DRM now also uses the atomic commit helpers instead of the open- coded variant that was only doing half its job. As a bit of a byproduct of the Tegra186 support the driver also gained HDMI 2.0 as well as zpos property support. Along the way there are also a few patches to clean up a few things and fix minor issues. ---------------------------------------------------------------- Thierry Reding (3): drm/tegra: dc: Restore YUV overlay support drm/tegra: dc: Fix possible_crtcs mask for planes drm/tegra: dc: Properly cleanup overlay planes drivers/gpu/drm/tegra/dc.c | 35 +++++++++++++++++++++++------------ drivers/gpu/drm/tegra/plane.c | 5 +++++ 2 files changed, 28 insertions(+), 12 deletions(-)

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[PATCH 3/3] drm/amdgpu: Move to gtt before cpu accesses dma buf.
by Samuel Li 11 Jan '18

11 Jan '18

To improve cpu read performance. This is implemented for APUs currently. v2: Adapt to change https://lists.freedesktop.org/archives/amd-gfx/2017-October/015174.html v3: Adapt to change "forward begin_cpu_access callback to drivers" v4: Instead of v3, reuse drm_gem dmabuf_ops here. Also some minor fixes as suggested. Change-Id: I7a583e23a9ee706e0edd2a46f4e4186a609368e3 Signed-off-by: Samuel Li <Samuel.Li(a)amd.com> --- drivers/gpu/drm/amd/amdgpu/amdgpu.h | 2 + drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c | 2 +- drivers/gpu/drm/amd/amdgpu/amdgpu_prime.c | 67 +++++++++++++++++++++++++++++++ 3 files changed, 70 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h index f8657c3..193db70 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h @@ -417,6 +417,8 @@ amdgpu_gem_prime_import_sg_table(struct drm_device *dev, struct dma_buf *amdgpu_gem_prime_export(struct drm_device *dev, struct drm_gem_object *gobj, int flags); +struct drm_gem_object *amdgpu_gem_prime_import(struct drm_device *dev, + struct dma_buf *dma_buf); int amdgpu_gem_prime_pin(struct drm_gem_object *obj); void amdgpu_gem_prime_unpin(struct drm_gem_object *obj); struct reservation_object *amdgpu_gem_prime_res_obj(struct drm_gem_object *); diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c index 31383e0..df30b08 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c @@ -868,7 +868,7 @@ static struct drm_driver kms_driver = { .prime_handle_to_fd = drm_gem_prime_handle_to_fd, .prime_fd_to_handle = drm_gem_prime_fd_to_handle, .gem_prime_export = amdgpu_gem_prime_export, - .gem_prime_import = drm_gem_prime_import, + .gem_prime_import = amdgpu_gem_prime_import, .gem_prime_pin = amdgpu_gem_prime_pin, .gem_prime_unpin = amdgpu_gem_prime_unpin, .gem_prime_res_obj = amdgpu_gem_prime_res_obj, diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_prime.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_prime.c index ae9c106..283b523 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_prime.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_prime.c @@ -26,6 +26,7 @@ #include <drm/drmP.h> #include "amdgpu.h" +#include "amdgpu_display.h" #include <drm/amdgpu_drm.h> #include <linux/dma-buf.h> @@ -164,6 +165,50 @@ struct reservation_object *amdgpu_gem_prime_res_obj(struct drm_gem_object *obj) return bo->tbo.resv; } +static int amdgpu_gem_begin_cpu_access(struct dma_buf *dma_buf, + enum dma_data_direction direction) +{ + struct amdgpu_bo *bo = gem_to_amdgpu_bo(dma_buf->priv); + struct amdgpu_device *adev = amdgpu_ttm_adev(bo->tbo.bdev); + struct ttm_operation_ctx ctx = { true, false }; + u32 domain = amdgpu_framebuffer_domains(adev); + int ret = 0; + bool reads = (direction == DMA_BIDIRECTIONAL || + direction == DMA_FROM_DEVICE); + + if (!reads || !(domain & AMDGPU_GEM_DOMAIN_GTT)) + return 0; + + /* move to gtt */ + ret = amdgpu_bo_reserve(bo, false); + if (unlikely(ret != 0)) + return ret; + + if (!bo->pin_count && (bo->allowed_domains & AMDGPU_GEM_DOMAIN_GTT)) { + amdgpu_ttm_placement_from_domain(bo, AMDGPU_GEM_DOMAIN_GTT); + ret = ttm_bo_validate(&bo->tbo, &bo->placement, &ctx); + } + + amdgpu_bo_unreserve(bo); + return ret; +} + +static const struct dma_buf_ops amdgpu_dmabuf_ops = { + .attach = drm_gem_map_attach, + .detach = drm_gem_map_detach, + .map_dma_buf = drm_gem_map_dma_buf, + .unmap_dma_buf = drm_gem_unmap_dma_buf, + .release = drm_gem_dmabuf_release, + .begin_cpu_access = amdgpu_gem_begin_cpu_access, + .map = drm_gem_dmabuf_kmap, + .map_atomic = drm_gem_dmabuf_kmap_atomic, + .unmap = drm_gem_dmabuf_kunmap, + .unmap_atomic = drm_gem_dmabuf_kunmap_atomic, + .mmap = drm_gem_dmabuf_mmap, + .vmap = drm_gem_dmabuf_vmap, + .vunmap = drm_gem_dmabuf_vunmap, +}; + struct dma_buf *amdgpu_gem_prime_export(struct drm_device *dev, struct drm_gem_object *gobj, int flags) @@ -178,5 +223,27 @@ struct dma_buf *amdgpu_gem_prime_export(struct drm_device *dev, buf = drm_gem_prime_export(dev, gobj, flags); if (!IS_ERR(buf)) buf->file->f_mapping = dev->anon_inode->i_mapping; + buf->ops = &amdgpu_dmabuf_ops; + return buf; } + +struct drm_gem_object *amdgpu_gem_prime_import(struct drm_device *dev, + struct dma_buf *dma_buf) +{ + struct drm_gem_object *obj; + + if (dma_buf->ops == &amdgpu_dmabuf_ops) { + obj = dma_buf->priv; + if (obj->dev == dev) { + /* + * Importing dmabuf exported from out own gem increases + * refcount on gem itself instead of f_count of dmabuf. + */ + drm_gem_object_get(obj); + return obj; + } + } + + return drm_gem_prime_import(dev, dma_buf); +} -- 2.7.4

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[GIT PULL] drm/tegra: Fixes for v4.15-rc8
by Thierry Reding 11 Jan '18

11 Jan '18

Hi Dave, The following changes since commit b0bb222440a5c8273f67dd37946707e6ba6ad832: Merge branch 'linux-4.15' of git://github.com/skeggsb/linux into drm-fixes (2018-01-09 12:03:10 +1000) are available in the Git repository at: git://anongit.freedesktop.org/tegra/linux tags/drm/tegra/for-4.15-rc8 for you to fetch changes up to d780537f9b49e9d714a454e5ed989d909beab8ec: drm/tegra: sor: Fix hang on Tegra124 eDP (2018-01-10 13:04:58 +0100) Thanks, Thierry ---------------------------------------------------------------- drm/tegra: Fixes for v4.15-rc8 A single fix for a Tegra124 eDP regression introduced by the SOR changes in v4.15-rc1. ---------------------------------------------------------------- Thierry Reding (1): drm/tegra: sor: Fix hang on Tegra124 eDP drivers/gpu/drm/tegra/sor.c | 3 +++ 1 file changed, 3 insertions(+)

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[PULL] drm-intel-fixes
by Jani Nikula 11 Jan '18

11 Jan '18

Hi Dave - Hopefully final drm/i915 fixes for v4.15: - Fix a KASAN reported use after free - Whitelist a register to avoid hangs - GVT fixes BR, Jani. The following changes since commit b2cd1df66037e7c4697c7e40496bf7e4a5e16a2d: Linux 4.15-rc7 (2018-01-07 14:22:41 -0800) are available in the git repository at: git://anongit.freedesktop.org/drm/drm-intel tags/drm-intel-fixes-2018-01-11-1 for you to fetch changes up to 5005c8514285ae4f28e862f8d91faaa2015e03a3: drm/i915: Don't adjust priority on an already signaled fence (2018-01-11 11:42:53 +0200) ---------------------------------------------------------------- Hopefully final drm/i915 fixes for v4.15: - Fix a KASAN reported use after free - Whitelist a register to avoid hangs - GVT fixes ---------------------------------------------------------------- Changbin Du (1): drm/i915/gvt: Fix stack-out-of-bounds bug in cmd parser Chris Wilson (1): drm/i915: Don't adjust priority on an already signaled fence Jani Nikula (1): Merge tag 'gvt-fixes-2018-01-08' of https://github.com/intel/gvt-linux into drm-intel-fixes Kenneth Graunke (1): drm/i915: Whitelist SLICE_COMMON_ECO_CHICKEN1 on Geminilake. Zhi Wang (1): drm/i915/gvt: Clear the shadow page table entry after post-sync drivers/gpu/drm/i915/gvt/cmd_parser.c | 4 ++-- drivers/gpu/drm/i915/gvt/gtt.c | 5 ++++- drivers/gpu/drm/i915/i915_gem.c | 2 +- drivers/gpu/drm/i915/i915_reg.h | 2 ++ drivers/gpu/drm/i915/intel_engine_cs.c | 5 +++++ drivers/gpu/drm/i915/intel_lrc.c | 3 +++ 6 files changed, 17 insertions(+), 4 deletions(-) -- Jani Nikula, Intel Open Source Technology Center

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dri-devel January 2018