From 7cf77b273a8fc51e7de622fa6691abd4436a9a6b Mon Sep 17 00:00:00 2001 From: Thierry Reding Date: Mon, 11 Feb 2019 11:51:20 +0100 Subject: [PATCH 1/2] drm/tegra: hub: Fix dereference before check Reported-by: Dan Carpenter Signed-off-by: Thierry Reding --- drivers/gpu/drm/tegra/hub.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/tegra/hub.c b/drivers/gpu/drm/tegra/hub.c index ba9b3cfb8c3d..b3436c2aed68 100644 --- a/drivers/gpu/drm/tegra/hub.c +++ b/drivers/gpu/drm/tegra/hub.c @@ -378,14 +378,16 @@ static int tegra_shared_plane_atomic_check(struct drm_plane *plane, static void tegra_shared_plane_atomic_disable(struct drm_plane *plane, struct drm_plane_state *old_state) { - struct tegra_dc *dc = to_tegra_dc(old_state->crtc); struct tegra_plane *p = to_tegra_plane(plane); + struct tegra_dc *dc; u32 value; /* rien ne va plus */ if (!old_state || !old_state->crtc) return; + dc = to_tegra_dc(old_state->crtc); + /* * XXX Legacy helpers seem to sometimes call ->atomic_disable() even * on planes that are already disabled. Make sure we fallback to the From 509869a2fec36ecb2b841180915995f41d5a0219 Mon Sep 17 00:00:00 2001 From: Anders Roxell Date: Mon, 18 Feb 2019 12:00:50 +0100 Subject: [PATCH 2/2] drm/tegra: vic: Fix implicit function declaration warning MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit When CONFIG_IOMMU_API isn't set the following warnings pops up: drivers/gpu/drm/tegra/vic.c: In function ‘vic_boot’: drivers/gpu/drm/tegra/vic.c:110:31: error: implicit declaration of function ‘dev_iommu_fwspec_get’; did you mean ‘iommu_fwspec_free’? [-Werror=implicit-function-declaration] struct iommu_fwspec *spec = dev_iommu_fwspec_get(vic->dev); ^~~~~~~~~~~~~~~~~~~~ iommu_fwspec_free drivers/gpu/drm/tegra/vic.c:110:31: warning: initialization of ‘struct iommu_fwspec *’ from ‘int’ makes pointer from integer without a cast [-Wint-conversion] drivers/gpu/drm/tegra/vic.c:117:19: error: ‘struct iommu_fwspec’ has no member named ‘num_ids’ if (spec && spec->num_ids > 0) { ^~ drivers/gpu/drm/tegra/vic.c:118:16: error: ‘struct iommu_fwspec’ has no member named ‘ids’ value = spec->ids[0] & 0xffff; ^~ Rework so that its inside a '#ifdef CONFIG_IOMMU_API' block. Fixes: f3779cb190a5 ("drm/tegra: vic: Support stream ID register programming") Signed-off-by: Anders Roxell Signed-off-by: Thierry Reding --- drivers/gpu/drm/tegra/vic.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/gpu/drm/tegra/vic.c b/drivers/gpu/drm/tegra/vic.c index 39bfed9623de..982ce37ecde1 100644 --- a/drivers/gpu/drm/tegra/vic.c +++ b/drivers/gpu/drm/tegra/vic.c @@ -106,6 +106,7 @@ static int vic_boot(struct vic *vic) if (vic->booted) return 0; +#ifdef CONFIG_IOMMU_API if (vic->config->supports_sid) { struct iommu_fwspec *spec = dev_iommu_fwspec_get(vic->dev); u32 value; @@ -121,6 +122,7 @@ static int vic_boot(struct vic *vic) vic_writel(vic, value, VIC_THI_STREAMID1); } } +#endif /* setup clockgating registers */ vic_writel(vic, CG_IDLE_CG_DLY_CNT(4) |