From da2b1a0a40d8ea8f23f9d13e10ec3160ef92178d Mon Sep 17 00:00:00 2001 From: Deepak R Varma Date: Wed, 25 Jan 2023 20:37:14 +0530 Subject: [PATCH] drm/nouveau/devinit: Convert function disable() to be void The current design of callback function disable() of struct nvkm_devinit_func is defined to return a u64 value. In its implementation in the driver modules, the function always returns a fixed value 0. Hence the design and implementation of this function should be enhanced to return void instead of a fixed value. This change also eliminates untouched return variables. The change is identified using the returnvar.cocci Coccinelle semantic patch script. Signed-off-by: Deepak R Varma Reviewed-by: Lyude Paul Signed-off-by: Lyude Paul Link: https://patchwork.freedesktop.org/patch/msgid/Y9FFoooIXjlr+UP1@ubun2204.myguest.virtualbox.org --- drivers/gpu/drm/nouveau/nvkm/subdev/devinit/base.c | 3 ++- drivers/gpu/drm/nouveau/nvkm/subdev/devinit/g84.c | 5 +---- drivers/gpu/drm/nouveau/nvkm/subdev/devinit/g98.c | 4 +--- drivers/gpu/drm/nouveau/nvkm/subdev/devinit/gf100.c | 4 +--- drivers/gpu/drm/nouveau/nvkm/subdev/devinit/gm107.c | 4 +--- drivers/gpu/drm/nouveau/nvkm/subdev/devinit/gt215.c | 4 +--- drivers/gpu/drm/nouveau/nvkm/subdev/devinit/mcp89.c | 4 +--- drivers/gpu/drm/nouveau/nvkm/subdev/devinit/nv50.c | 5 +---- drivers/gpu/drm/nouveau/nvkm/subdev/devinit/nv50.h | 2 +- drivers/gpu/drm/nouveau/nvkm/subdev/devinit/priv.h | 2 +- 10 files changed, 11 insertions(+), 26 deletions(-) diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/devinit/base.c b/drivers/gpu/drm/nouveau/nvkm/subdev/devinit/base.c index dd4981708fe4..3d9319c319c6 100644 --- a/drivers/gpu/drm/nouveau/nvkm/subdev/devinit/base.c +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/devinit/base.c @@ -51,7 +51,8 @@ u64 nvkm_devinit_disable(struct nvkm_devinit *init) { if (init && init->func->disable) - return init->func->disable(init); + init->func->disable(init); + return 0; } diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/devinit/g84.c b/drivers/gpu/drm/nouveau/nvkm/subdev/devinit/g84.c index c224702b7bed..00df7811dd10 100644 --- a/drivers/gpu/drm/nouveau/nvkm/subdev/devinit/g84.c +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/devinit/g84.c @@ -26,13 +26,12 @@ #include #include -static u64 +static void g84_devinit_disable(struct nvkm_devinit *init) { struct nvkm_device *device = init->subdev.device; u32 r001540 = nvkm_rd32(device, 0x001540); u32 r00154c = nvkm_rd32(device, 0x00154c); - u64 disable = 0ULL; if (!(r001540 & 0x40000000)) { nvkm_subdev_disable(device, NVKM_ENGINE_MPEG, 0); @@ -47,8 +46,6 @@ g84_devinit_disable(struct nvkm_devinit *init) nvkm_subdev_disable(device, NVKM_ENGINE_BSP, 0); if (!(r00154c & 0x00000040)) nvkm_subdev_disable(device, NVKM_ENGINE_CIPHER, 0); - - return disable; } static const struct nvkm_devinit_func diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/devinit/g98.c b/drivers/gpu/drm/nouveau/nvkm/subdev/devinit/g98.c index 8977483a9f42..54bee499b982 100644 --- a/drivers/gpu/drm/nouveau/nvkm/subdev/devinit/g98.c +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/devinit/g98.c @@ -26,7 +26,7 @@ #include #include -static u64 +static void g98_devinit_disable(struct nvkm_devinit *init) { struct nvkm_device *device = init->subdev.device; @@ -45,8 +45,6 @@ g98_devinit_disable(struct nvkm_devinit *init) nvkm_subdev_disable(device, NVKM_ENGINE_MSVLD, 0); if (!(r00154c & 0x00000040)) nvkm_subdev_disable(device, NVKM_ENGINE_SEC, 0); - - return 0ULL; } static const struct nvkm_devinit_func diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/devinit/gf100.c b/drivers/gpu/drm/nouveau/nvkm/subdev/devinit/gf100.c index 5b7cb1fe7897..5368e705e7fd 100644 --- a/drivers/gpu/drm/nouveau/nvkm/subdev/devinit/gf100.c +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/devinit/gf100.c @@ -63,7 +63,7 @@ gf100_devinit_pll_set(struct nvkm_devinit *init, u32 type, u32 freq) return ret; } -static u64 +static void gf100_devinit_disable(struct nvkm_devinit *init) { struct nvkm_device *device = init->subdev.device; @@ -85,8 +85,6 @@ gf100_devinit_disable(struct nvkm_devinit *init) nvkm_subdev_disable(device, NVKM_ENGINE_CE, 0); if (r022500 & 0x00000200) nvkm_subdev_disable(device, NVKM_ENGINE_CE, 1); - - return 0ULL; } void diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/devinit/gm107.c b/drivers/gpu/drm/nouveau/nvkm/subdev/devinit/gm107.c index 8955af2704c7..7bcbc4895ec2 100644 --- a/drivers/gpu/drm/nouveau/nvkm/subdev/devinit/gm107.c +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/devinit/gm107.c @@ -26,7 +26,7 @@ #include #include -u64 +void gm107_devinit_disable(struct nvkm_devinit *init) { struct nvkm_device *device = init->subdev.device; @@ -39,8 +39,6 @@ gm107_devinit_disable(struct nvkm_devinit *init) nvkm_subdev_disable(device, NVKM_ENGINE_CE, 2); if (r021c04 & 0x00000001) nvkm_subdev_disable(device, NVKM_ENGINE_DISP, 0); - - return 0ULL; } static const struct nvkm_devinit_func diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/devinit/gt215.c b/drivers/gpu/drm/nouveau/nvkm/subdev/devinit/gt215.c index 3d0ab86c3115..dbca92318baf 100644 --- a/drivers/gpu/drm/nouveau/nvkm/subdev/devinit/gt215.c +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/devinit/gt215.c @@ -62,7 +62,7 @@ gt215_devinit_pll_set(struct nvkm_devinit *init, u32 type, u32 freq) return ret; } -static u64 +static void gt215_devinit_disable(struct nvkm_devinit *init) { struct nvkm_device *device = init->subdev.device; @@ -80,8 +80,6 @@ gt215_devinit_disable(struct nvkm_devinit *init) nvkm_subdev_disable(device, NVKM_ENGINE_MSVLD, 0); if (!(r00154c & 0x00000200)) nvkm_subdev_disable(device, NVKM_ENGINE_CE, 0); - - return 0ULL; } static u32 diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/devinit/mcp89.c b/drivers/gpu/drm/nouveau/nvkm/subdev/devinit/mcp89.c index a9cdf2411187..a24bd2e7d7ce 100644 --- a/drivers/gpu/drm/nouveau/nvkm/subdev/devinit/mcp89.c +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/devinit/mcp89.c @@ -26,7 +26,7 @@ #include #include -static u64 +static void mcp89_devinit_disable(struct nvkm_devinit *init) { struct nvkm_device *device = init->subdev.device; @@ -46,8 +46,6 @@ mcp89_devinit_disable(struct nvkm_devinit *init) nvkm_subdev_disable(device, NVKM_ENGINE_VIC, 0); if (!(r00154c & 0x00000200)) nvkm_subdev_disable(device, NVKM_ENGINE_CE, 0); - - return 0; } static const struct nvkm_devinit_func diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/devinit/nv50.c b/drivers/gpu/drm/nouveau/nvkm/subdev/devinit/nv50.c index 380995d398b1..07ed8fd778b2 100644 --- a/drivers/gpu/drm/nouveau/nvkm/subdev/devinit/nv50.c +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/devinit/nv50.c @@ -77,17 +77,14 @@ nv50_devinit_pll_set(struct nvkm_devinit *init, u32 type, u32 freq) return 0; } -static u64 +static void nv50_devinit_disable(struct nvkm_devinit *init) { struct nvkm_device *device = init->subdev.device; u32 r001540 = nvkm_rd32(device, 0x001540); - u64 disable = 0ULL; if (!(r001540 & 0x40000000)) nvkm_subdev_disable(device, NVKM_ENGINE_MPEG, 0); - - return disable; } void diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/devinit/nv50.h b/drivers/gpu/drm/nouveau/nvkm/subdev/devinit/nv50.h index 987a7f478b84..8de409c084c1 100644 --- a/drivers/gpu/drm/nouveau/nvkm/subdev/devinit/nv50.h +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/devinit/nv50.h @@ -23,7 +23,7 @@ int gf100_devinit_ctor(struct nvkm_object *, struct nvkm_object *, int gf100_devinit_pll_set(struct nvkm_devinit *, u32, u32); void gf100_devinit_preinit(struct nvkm_devinit *); -u64 gm107_devinit_disable(struct nvkm_devinit *); +void gm107_devinit_disable(struct nvkm_devinit *); int gm200_devinit_post(struct nvkm_devinit *, bool); void gm200_devinit_preos(struct nv50_devinit *, bool); diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/devinit/priv.h b/drivers/gpu/drm/nouveau/nvkm/subdev/devinit/priv.h index dd8b038a8cee..a648482d06e9 100644 --- a/drivers/gpu/drm/nouveau/nvkm/subdev/devinit/priv.h +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/devinit/priv.h @@ -12,7 +12,7 @@ struct nvkm_devinit_func { u32 (*mmio)(struct nvkm_devinit *, u32); void (*meminit)(struct nvkm_devinit *); int (*pll_set)(struct nvkm_devinit *, u32 type, u32 freq); - u64 (*disable)(struct nvkm_devinit *); + void (*disable)(struct nvkm_devinit *); }; void nvkm_devinit_ctor(const struct nvkm_devinit_func *, struct nvkm_device *, -- 2.20.1