We already have it in v3d_dev->drm.dev with zero additional pointer chasing. Personally I don't like duplicated pointers like this because: - reviewers need to check whether the pointer is for the same or different objects if there's multiple - compilers have an easier time too
To avoid having to pull in some big headers I implemented the casting function as a macro instead of a static inline. Typechecking thanks to container_of still assured.
But also a bit a bikeshed, so feel free to ignore.
Signed-off-by: Daniel Vetter daniel.vetter@intel.com Cc: Eric Anholt eric@anholt.net --- drivers/gpu/drm/v3d/v3d_drv.c | 3 +-- drivers/gpu/drm/v3d/v3d_drv.h | 3 ++- drivers/gpu/drm/v3d/v3d_irq.c | 8 +++++--- 3 files changed, 8 insertions(+), 6 deletions(-)
diff --git a/drivers/gpu/drm/v3d/v3d_drv.c b/drivers/gpu/drm/v3d/v3d_drv.c index 37cb880f2826..82a7dfdd14c2 100644 --- a/drivers/gpu/drm/v3d/v3d_drv.c +++ b/drivers/gpu/drm/v3d/v3d_drv.c @@ -235,7 +235,7 @@ static int map_regs(struct v3d_dev *v3d, void __iomem **regs, const char *name) { struct resource *res = - platform_get_resource_byname(v3d->pdev, IORESOURCE_MEM, name); + platform_get_resource_byname(v3d_to_pdev(v3d), IORESOURCE_MEM, name);
*regs = devm_ioremap_resource(v3d->drm.dev, res); return PTR_ERR_OR_ZERO(*regs); @@ -255,7 +255,6 @@ static int v3d_platform_drm_probe(struct platform_device *pdev) if (IS_ERR(v3d)) return PTR_ERR(v3d);
- v3d->pdev = pdev; drm = &v3d->drm;
platform_set_drvdata(pdev, drm); diff --git a/drivers/gpu/drm/v3d/v3d_drv.h b/drivers/gpu/drm/v3d/v3d_drv.h index 4d2d1f2fe1af..935f23b524b2 100644 --- a/drivers/gpu/drm/v3d/v3d_drv.h +++ b/drivers/gpu/drm/v3d/v3d_drv.h @@ -46,7 +46,6 @@ struct v3d_dev { int ver; bool single_irq_line;
- struct platform_device *pdev; void __iomem *hub_regs; void __iomem *core_regs[3]; void __iomem *bridge_regs; @@ -128,6 +127,8 @@ v3d_has_csd(struct v3d_dev *v3d) return v3d->ver >= 41; }
+#define v3d_to_pdev(v3d) to_platform_device(v3d->drm.dev) + /* The per-fd struct, which tracks the MMU mappings. */ struct v3d_file_priv { struct v3d_dev *v3d; diff --git a/drivers/gpu/drm/v3d/v3d_irq.c b/drivers/gpu/drm/v3d/v3d_irq.c index f4ce6d057c90..51b65263c657 100644 --- a/drivers/gpu/drm/v3d/v3d_irq.c +++ b/drivers/gpu/drm/v3d/v3d_irq.c @@ -217,7 +217,7 @@ v3d_irq_init(struct v3d_dev *v3d) V3D_CORE_WRITE(core, V3D_CTL_INT_CLR, V3D_CORE_IRQS); V3D_WRITE(V3D_HUB_INT_CLR, V3D_HUB_IRQS);
- irq1 = platform_get_irq(v3d->pdev, 1); + irq1 = platform_get_irq(v3d_to_pdev(v3d), 1); if (irq1 == -EPROBE_DEFER) return irq1; if (irq1 > 0) { @@ -226,7 +226,8 @@ v3d_irq_init(struct v3d_dev *v3d) "v3d_core0", v3d); if (ret) goto fail; - ret = devm_request_irq(v3d->drm.dev, platform_get_irq(v3d->pdev, 0), + ret = devm_request_irq(v3d->drm.dev, + platform_get_irq(v3d_to_pdev(v3d), 0), v3d_hub_irq, IRQF_SHARED, "v3d_hub", v3d); if (ret) @@ -234,7 +235,8 @@ v3d_irq_init(struct v3d_dev *v3d) } else { v3d->single_irq_line = true;
- ret = devm_request_irq(v3d->drm.dev, platform_get_irq(v3d->pdev, 0), + ret = devm_request_irq(v3d->drm.dev, + platform_get_irq(v3d_to_pdev(v3d), 0), v3d_irq, IRQF_SHARED, "v3d", v3d); if (ret)