As a result of commit 987d65d01356 (drm: debugfs: make drm_debugfs_create_files() never fail) and changes to various debugfs functions in drm/core and across various drivers, there is no need for the drm_driver.debugfs_init() hook to have a return value. Therefore, declare it as void.
This also includes refactoring all users of the .debugfs_init() hook to return void across the subsystem.
v2: include changes to the hook and drivers that use it in one patch to prevent driver breakage and enable individual successful compilation of this change.
References: https://lists.freedesktop.org/archives/dri-devel/2020-February/257183.html Signed-off-by: Wambui Karuga wambui.karugax@gmail.com --- drivers/gpu/drm/arc/arcpgu_drv.c | 3 +-- drivers/gpu/drm/arm/hdlcd_drv.c | 3 +-- drivers/gpu/drm/arm/malidp_drv.c | 3 +-- drivers/gpu/drm/drm_atomic.c | 3 +-- drivers/gpu/drm/drm_client.c | 4 +--- drivers/gpu/drm/drm_crtc_internal.h | 2 +- drivers/gpu/drm/drm_debugfs.c | 12 +++--------- drivers/gpu/drm/drm_framebuffer.c | 4 +--- drivers/gpu/drm/drm_gem_vram_helper.c | 6 +----- drivers/gpu/drm/drm_internal.h | 2 +- drivers/gpu/drm/drm_mipi_dbi.c | 6 +----- drivers/gpu/drm/etnaviv/etnaviv_drv.c | 4 +--- drivers/gpu/drm/msm/adreno/a5xx_debugfs.c | 6 ++---- drivers/gpu/drm/msm/adreno/a5xx_gpu.h | 2 +- drivers/gpu/drm/msm/msm_debugfs.c | 12 +++--------- drivers/gpu/drm/msm/msm_debugfs.h | 2 +- drivers/gpu/drm/msm/msm_gpu.h | 2 +- drivers/gpu/drm/nouveau/nouveau_debugfs.c | 6 ++---- drivers/gpu/drm/nouveau/nouveau_debugfs.h | 8 +++----- drivers/gpu/drm/omapdrm/omap_debugfs.c | 4 +--- drivers/gpu/drm/omapdrm/omap_drv.h | 2 +- drivers/gpu/drm/pl111/pl111_debugfs.c | 4 +--- drivers/gpu/drm/pl111/pl111_drm.h | 2 +- drivers/gpu/drm/qxl/qxl_debugfs.c | 21 +++++++-------------- drivers/gpu/drm/qxl/qxl_drv.h | 13 +++++-------- drivers/gpu/drm/qxl/qxl_ttm.c | 6 ++---- drivers/gpu/drm/sti/sti_drv.c | 3 +-- drivers/gpu/drm/tegra/drm.c | 3 +-- drivers/gpu/drm/tilcdc/tilcdc_drv.c | 4 +--- drivers/gpu/drm/v3d/v3d_debugfs.c | 3 +-- drivers/gpu/drm/v3d/v3d_drv.h | 2 +- drivers/gpu/drm/vc4/vc4_debugfs.c | 4 +--- drivers/gpu/drm/vc4/vc4_drv.h | 2 +- drivers/gpu/drm/virtio/virtgpu_debugfs.c | 3 +-- drivers/gpu/drm/virtio/virtgpu_drv.h | 2 +- include/drm/drm_client.h | 2 +- include/drm/drm_drv.h | 2 +- include/drm/drm_gem_vram_helper.h | 2 +- include/drm/drm_mipi_dbi.h | 2 +- 39 files changed, 58 insertions(+), 118 deletions(-)
diff --git a/drivers/gpu/drm/arc/arcpgu_drv.c b/drivers/gpu/drm/arc/arcpgu_drv.c index 660b25f9588e..c05d001163e0 100644 --- a/drivers/gpu/drm/arc/arcpgu_drv.c +++ b/drivers/gpu/drm/arc/arcpgu_drv.c @@ -137,12 +137,11 @@ static struct drm_info_list arcpgu_debugfs_list[] = { { "clocks", arcpgu_show_pxlclock, 0 }, };
-static int arcpgu_debugfs_init(struct drm_minor *minor) +static void arcpgu_debugfs_init(struct drm_minor *minor) { drm_debugfs_create_files(arcpgu_debugfs_list, ARRAY_SIZE(arcpgu_debugfs_list), minor->debugfs_root, minor); - return 0; } #endif
diff --git a/drivers/gpu/drm/arm/hdlcd_drv.c b/drivers/gpu/drm/arm/hdlcd_drv.c index bd0ad6f46a97..194419f47c5e 100644 --- a/drivers/gpu/drm/arm/hdlcd_drv.c +++ b/drivers/gpu/drm/arm/hdlcd_drv.c @@ -224,12 +224,11 @@ static struct drm_info_list hdlcd_debugfs_list[] = { { "clocks", hdlcd_show_pxlclock, 0 }, };
-static int hdlcd_debugfs_init(struct drm_minor *minor) +static void hdlcd_debugfs_init(struct drm_minor *minor) { drm_debugfs_create_files(hdlcd_debugfs_list, ARRAY_SIZE(hdlcd_debugfs_list), minor->debugfs_root, minor); - return 0; } #endif
diff --git a/drivers/gpu/drm/arm/malidp_drv.c b/drivers/gpu/drm/arm/malidp_drv.c index 37d92a06318e..def8c9ffafca 100644 --- a/drivers/gpu/drm/arm/malidp_drv.c +++ b/drivers/gpu/drm/arm/malidp_drv.c @@ -548,7 +548,7 @@ static const struct file_operations malidp_debugfs_fops = { .release = single_release, };
-static int malidp_debugfs_init(struct drm_minor *minor) +static void malidp_debugfs_init(struct drm_minor *minor) { struct malidp_drm *malidp = minor->dev->dev_private;
@@ -557,7 +557,6 @@ static int malidp_debugfs_init(struct drm_minor *minor) spin_lock_init(&malidp->errors_lock); debugfs_create_file("debug", S_IRUGO | S_IWUSR, minor->debugfs_root, minor->dev, &malidp_debugfs_fops); - return 0; }
#endif //CONFIG_DEBUG_FS diff --git a/drivers/gpu/drm/drm_atomic.c b/drivers/gpu/drm/drm_atomic.c index c0056d9cc139..965173fd0ac2 100644 --- a/drivers/gpu/drm/drm_atomic.c +++ b/drivers/gpu/drm/drm_atomic.c @@ -1641,11 +1641,10 @@ static const struct drm_info_list drm_atomic_debugfs_list[] = { {"state", drm_state_info, 0}, };
-int drm_atomic_debugfs_init(struct drm_minor *minor) +void drm_atomic_debugfs_init(struct drm_minor *minor) { drm_debugfs_create_files(drm_atomic_debugfs_list, ARRAY_SIZE(drm_atomic_debugfs_list), minor->debugfs_root, minor); - return 0; } #endif diff --git a/drivers/gpu/drm/drm_client.c b/drivers/gpu/drm/drm_client.c index 82fbdee407b2..8cb93f5209a4 100644 --- a/drivers/gpu/drm/drm_client.c +++ b/drivers/gpu/drm/drm_client.c @@ -457,12 +457,10 @@ static const struct drm_info_list drm_client_debugfs_list[] = { { "internal_clients", drm_client_debugfs_internal_clients, 0 }, };
-int drm_client_debugfs_init(struct drm_minor *minor) +void drm_client_debugfs_init(struct drm_minor *minor) { drm_debugfs_create_files(drm_client_debugfs_list, ARRAY_SIZE(drm_client_debugfs_list), minor->debugfs_root, minor); - - return 0; } #endif diff --git a/drivers/gpu/drm/drm_crtc_internal.h b/drivers/gpu/drm/drm_crtc_internal.h index 16f2413403aa..1b620ba9244b 100644 --- a/drivers/gpu/drm/drm_crtc_internal.h +++ b/drivers/gpu/drm/drm_crtc_internal.h @@ -224,7 +224,7 @@ int drm_mode_dirtyfb_ioctl(struct drm_device *dev, /* drm_atomic.c */ #ifdef CONFIG_DEBUG_FS struct drm_minor; -int drm_atomic_debugfs_init(struct drm_minor *minor); +void drm_atomic_debugfs_init(struct drm_minor *minor); #endif
int __drm_atomic_helper_disable_plane(struct drm_plane *plane, diff --git a/drivers/gpu/drm/drm_debugfs.c b/drivers/gpu/drm/drm_debugfs.c index e13f21642f88..2bea22130703 100644 --- a/drivers/gpu/drm/drm_debugfs.c +++ b/drivers/gpu/drm/drm_debugfs.c @@ -207,7 +207,6 @@ int drm_debugfs_init(struct drm_minor *minor, int minor_id, { struct drm_device *dev = minor->dev; char name[64]; - int ret;
INIT_LIST_HEAD(&minor->debugfs_list); mutex_init(&minor->debugfs_lock); @@ -227,14 +226,9 @@ int drm_debugfs_init(struct drm_minor *minor, int minor_id, drm_client_debugfs_init(minor); }
- if (dev->driver->debugfs_init) { - ret = dev->driver->debugfs_init(minor); - if (ret) { - DRM_ERROR("DRM: Driver failed to initialize " - "/sys/kernel/debug/dri.\n"); - return ret; - } - } + if (dev->driver->debugfs_init) + dev->driver->debugfs_init(minor); + return 0; }
diff --git a/drivers/gpu/drm/drm_framebuffer.c b/drivers/gpu/drm/drm_framebuffer.c index 46be88271fe5..0375b3d7f8d0 100644 --- a/drivers/gpu/drm/drm_framebuffer.c +++ b/drivers/gpu/drm/drm_framebuffer.c @@ -1207,12 +1207,10 @@ static const struct drm_info_list drm_framebuffer_debugfs_list[] = { { "framebuffer", drm_framebuffer_info, 0 }, };
-int drm_framebuffer_debugfs_init(struct drm_minor *minor) +void drm_framebuffer_debugfs_init(struct drm_minor *minor) { drm_debugfs_create_files(drm_framebuffer_debugfs_list, ARRAY_SIZE(drm_framebuffer_debugfs_list), minor->debugfs_root, minor); - - return 0; } #endif diff --git a/drivers/gpu/drm/drm_gem_vram_helper.c b/drivers/gpu/drm/drm_gem_vram_helper.c index c8bcc8609650..76506bedac11 100644 --- a/drivers/gpu/drm/drm_gem_vram_helper.c +++ b/drivers/gpu/drm/drm_gem_vram_helper.c @@ -1042,18 +1042,14 @@ static const struct drm_info_list drm_vram_mm_debugfs_list[] = { * * @minor: drm minor device. * - * Returns: - * 0 on success, or - * a negative error code otherwise. */ -int drm_vram_mm_debugfs_init(struct drm_minor *minor) +void drm_vram_mm_debugfs_init(struct drm_minor *minor) { #if defined(CONFIG_DEBUG_FS) drm_debugfs_create_files(drm_vram_mm_debugfs_list, ARRAY_SIZE(drm_vram_mm_debugfs_list), minor->debugfs_root, minor); #endif - return 0; } EXPORT_SYMBOL(drm_vram_mm_debugfs_init);
diff --git a/drivers/gpu/drm/drm_internal.h b/drivers/gpu/drm/drm_internal.h index 5714a78365ac..8b9e8bbca9b1 100644 --- a/drivers/gpu/drm/drm_internal.h +++ b/drivers/gpu/drm/drm_internal.h @@ -235,4 +235,4 @@ int drm_syncobj_query_ioctl(struct drm_device *dev, void *data, /* drm_framebuffer.c */ void drm_framebuffer_print_info(struct drm_printer *p, unsigned int indent, const struct drm_framebuffer *fb); -int drm_framebuffer_debugfs_init(struct drm_minor *minor); +void drm_framebuffer_debugfs_init(struct drm_minor *minor); diff --git a/drivers/gpu/drm/drm_mipi_dbi.c b/drivers/gpu/drm/drm_mipi_dbi.c index 558baf989f5a..113a767442d3 100644 --- a/drivers/gpu/drm/drm_mipi_dbi.c +++ b/drivers/gpu/drm/drm_mipi_dbi.c @@ -1308,10 +1308,8 @@ static const struct file_operations mipi_dbi_debugfs_command_fops = { * controller or getting the read command values. * Drivers can use this as their &drm_driver->debugfs_init callback. * - * Returns: - * Zero on success, negative error code on failure. */ -int mipi_dbi_debugfs_init(struct drm_minor *minor) +void mipi_dbi_debugfs_init(struct drm_minor *minor) { struct mipi_dbi_dev *dbidev = drm_to_mipi_dbi_dev(minor->dev); umode_t mode = S_IFREG | S_IWUSR; @@ -1320,8 +1318,6 @@ int mipi_dbi_debugfs_init(struct drm_minor *minor) mode |= S_IRUGO; debugfs_create_file("command", mode, minor->debugfs_root, dbidev, &mipi_dbi_debugfs_command_fops); - - return 0; } EXPORT_SYMBOL(mipi_dbi_debugfs_init);
diff --git a/drivers/gpu/drm/etnaviv/etnaviv_drv.c b/drivers/gpu/drm/etnaviv/etnaviv_drv.c index a65d30a48a9d..a39735316ca5 100644 --- a/drivers/gpu/drm/etnaviv/etnaviv_drv.c +++ b/drivers/gpu/drm/etnaviv/etnaviv_drv.c @@ -231,13 +231,11 @@ static struct drm_info_list etnaviv_debugfs_list[] = { {"ring", show_each_gpu, 0, etnaviv_ring_show}, };
-static int etnaviv_debugfs_init(struct drm_minor *minor) +static void etnaviv_debugfs_init(struct drm_minor *minor) { drm_debugfs_create_files(etnaviv_debugfs_list, ARRAY_SIZE(etnaviv_debugfs_list), minor->debugfs_root, minor); - - return 0; } #endif
diff --git a/drivers/gpu/drm/msm/adreno/a5xx_debugfs.c b/drivers/gpu/drm/msm/adreno/a5xx_debugfs.c index 011ab6353dbb..8cae2ca4af6b 100644 --- a/drivers/gpu/drm/msm/adreno/a5xx_debugfs.c +++ b/drivers/gpu/drm/msm/adreno/a5xx_debugfs.c @@ -148,12 +148,12 @@ reset_set(void *data, u64 val) DEFINE_SIMPLE_ATTRIBUTE(reset_fops, NULL, reset_set, "%llx\n");
-int a5xx_debugfs_init(struct msm_gpu *gpu, struct drm_minor *minor) +void a5xx_debugfs_init(struct msm_gpu *gpu, struct drm_minor *minor) { struct drm_device *dev;
if (!minor) - return 0; + return;
dev = minor->dev;
@@ -163,6 +163,4 @@ int a5xx_debugfs_init(struct msm_gpu *gpu, struct drm_minor *minor)
debugfs_create_file("reset", S_IWUGO, minor->debugfs_root, dev, &reset_fops); - - return 0; } diff --git a/drivers/gpu/drm/msm/adreno/a5xx_gpu.h b/drivers/gpu/drm/msm/adreno/a5xx_gpu.h index 833468ce6b6d..54868d4e3958 100644 --- a/drivers/gpu/drm/msm/adreno/a5xx_gpu.h +++ b/drivers/gpu/drm/msm/adreno/a5xx_gpu.h @@ -41,7 +41,7 @@ struct a5xx_gpu { #define to_a5xx_gpu(x) container_of(x, struct a5xx_gpu, base)
#ifdef CONFIG_DEBUG_FS -int a5xx_debugfs_init(struct msm_gpu *gpu, struct drm_minor *minor); +void a5xx_debugfs_init(struct msm_gpu *gpu, struct drm_minor *minor); #endif
/* diff --git a/drivers/gpu/drm/msm/msm_debugfs.c b/drivers/gpu/drm/msm/msm_debugfs.c index 6378157e1fff..ee2e270f464c 100644 --- a/drivers/gpu/drm/msm/msm_debugfs.c +++ b/drivers/gpu/drm/msm/msm_debugfs.c @@ -214,11 +214,10 @@ int msm_debugfs_late_init(struct drm_device *dev) return ret; }
-int msm_debugfs_init(struct drm_minor *minor) +void msm_debugfs_init(struct drm_minor *minor) { struct drm_device *dev = minor->dev; struct msm_drm_private *priv = dev->dev_private; - int ret;
drm_debugfs_create_files(msm_debugfs_list, ARRAY_SIZE(msm_debugfs_list), @@ -227,13 +226,8 @@ int msm_debugfs_init(struct drm_minor *minor) debugfs_create_file("gpu", S_IRUSR, minor->debugfs_root, dev, &msm_gpu_fops);
- if (priv->kms && priv->kms->funcs->debugfs_init) { - ret = priv->kms->funcs->debugfs_init(priv->kms, minor); - if (ret) - return ret; - } - - return 0; + if (priv->kms && priv->kms->funcs->debugfs_init) + priv->kms->funcs->debugfs_init(priv->kms, minor); } #endif
diff --git a/drivers/gpu/drm/msm/msm_debugfs.h b/drivers/gpu/drm/msm/msm_debugfs.h index 2b91f8c178ad..ef58f66abbb3 100644 --- a/drivers/gpu/drm/msm/msm_debugfs.h +++ b/drivers/gpu/drm/msm/msm_debugfs.h @@ -8,7 +8,7 @@ #define __MSM_DEBUGFS_H__
#ifdef CONFIG_DEBUG_FS -int msm_debugfs_init(struct drm_minor *minor); +void msm_debugfs_init(struct drm_minor *minor); #endif
#endif /* __MSM_DEBUGFS_H__ */ diff --git a/drivers/gpu/drm/msm/msm_gpu.h b/drivers/gpu/drm/msm/msm_gpu.h index be5bc2e8425c..6ccae4ba905c 100644 --- a/drivers/gpu/drm/msm/msm_gpu.h +++ b/drivers/gpu/drm/msm/msm_gpu.h @@ -57,7 +57,7 @@ struct msm_gpu_funcs { void (*show)(struct msm_gpu *gpu, struct msm_gpu_state *state, struct drm_printer *p); /* for generation specific debugfs: */ - int (*debugfs_init)(struct msm_gpu *gpu, struct drm_minor *minor); + void (*debugfs_init)(struct msm_gpu *gpu, struct drm_minor *minor); #endif unsigned long (*gpu_busy)(struct msm_gpu *gpu); struct msm_gpu_state *(*gpu_state_get)(struct msm_gpu *gpu); diff --git a/drivers/gpu/drm/nouveau/nouveau_debugfs.c b/drivers/gpu/drm/nouveau/nouveau_debugfs.c index 15a3d40edf02..63cb5e432f8a 100644 --- a/drivers/gpu/drm/nouveau/nouveau_debugfs.c +++ b/drivers/gpu/drm/nouveau/nouveau_debugfs.c @@ -217,7 +217,7 @@ static const struct nouveau_debugfs_files { {"pstate", &nouveau_pstate_fops}, };
-int +void nouveau_drm_debugfs_init(struct drm_minor *minor) { struct nouveau_drm *drm = nouveau_drm(minor->dev); @@ -240,12 +240,10 @@ nouveau_drm_debugfs_init(struct drm_minor *minor) */ dentry = debugfs_lookup("vbios.rom", minor->debugfs_root); if (!dentry) - return 0; + return;
d_inode(dentry)->i_size = drm->vbios.length; dput(dentry); - - return 0; }
int diff --git a/drivers/gpu/drm/nouveau/nouveau_debugfs.h b/drivers/gpu/drm/nouveau/nouveau_debugfs.h index 8909c010e8ea..77f0323b38ba 100644 --- a/drivers/gpu/drm/nouveau/nouveau_debugfs.h +++ b/drivers/gpu/drm/nouveau/nouveau_debugfs.h @@ -18,15 +18,13 @@ nouveau_debugfs(struct drm_device *dev) return nouveau_drm(dev)->debugfs; }
-extern int nouveau_drm_debugfs_init(struct drm_minor *); +extern void nouveau_drm_debugfs_init(struct drm_minor *); extern int nouveau_debugfs_init(struct nouveau_drm *); extern void nouveau_debugfs_fini(struct nouveau_drm *); #else -static inline int +static inline void nouveau_drm_debugfs_init(struct drm_minor *minor) -{ - return 0; -} +{}
static inline int nouveau_debugfs_init(struct nouveau_drm *drm) diff --git a/drivers/gpu/drm/omapdrm/omap_debugfs.c b/drivers/gpu/drm/omapdrm/omap_debugfs.c index ed63dcced79a..b57fbe8a0ac2 100644 --- a/drivers/gpu/drm/omapdrm/omap_debugfs.c +++ b/drivers/gpu/drm/omapdrm/omap_debugfs.c @@ -80,7 +80,7 @@ static struct drm_info_list omap_dmm_debugfs_list[] = { {"tiler_map", tiler_map_show, 0}, };
-int omap_debugfs_init(struct drm_minor *minor) +void omap_debugfs_init(struct drm_minor *minor) { drm_debugfs_create_files(omap_debugfs_list, ARRAY_SIZE(omap_debugfs_list), @@ -90,8 +90,6 @@ int omap_debugfs_init(struct drm_minor *minor) drm_debugfs_create_files(omap_dmm_debugfs_list, ARRAY_SIZE(omap_dmm_debugfs_list), minor->debugfs_root, minor); - - return 0; }
#endif diff --git a/drivers/gpu/drm/omapdrm/omap_drv.h b/drivers/gpu/drm/omapdrm/omap_drv.h index 7c4b66efcaa7..8a1fac680138 100644 --- a/drivers/gpu/drm/omapdrm/omap_drv.h +++ b/drivers/gpu/drm/omapdrm/omap_drv.h @@ -82,6 +82,6 @@ struct omap_drm_private { };
-int omap_debugfs_init(struct drm_minor *minor); +void omap_debugfs_init(struct drm_minor *minor);
#endif /* __OMAPDRM_DRV_H__ */ diff --git a/drivers/gpu/drm/pl111/pl111_debugfs.c b/drivers/gpu/drm/pl111/pl111_debugfs.c index 5595b19c91ce..26ca8cdf3e60 100644 --- a/drivers/gpu/drm/pl111/pl111_debugfs.c +++ b/drivers/gpu/drm/pl111/pl111_debugfs.c @@ -51,12 +51,10 @@ static const struct drm_info_list pl111_debugfs_list[] = { {"regs", pl111_debugfs_regs, 0}, };
-int +void pl111_debugfs_init(struct drm_minor *minor) { drm_debugfs_create_files(pl111_debugfs_list, ARRAY_SIZE(pl111_debugfs_list), minor->debugfs_root, minor); - - return 0; } diff --git a/drivers/gpu/drm/pl111/pl111_drm.h b/drivers/gpu/drm/pl111/pl111_drm.h index 77d2da9a8a7c..ba399bcb792f 100644 --- a/drivers/gpu/drm/pl111/pl111_drm.h +++ b/drivers/gpu/drm/pl111/pl111_drm.h @@ -84,6 +84,6 @@ struct pl111_drm_dev_private {
int pl111_display_init(struct drm_device *dev); irqreturn_t pl111_irq(int irq, void *data); -int pl111_debugfs_init(struct drm_minor *minor); +void pl111_debugfs_init(struct drm_minor *minor);
#endif /* _PL111_DRM_H_ */ diff --git a/drivers/gpu/drm/qxl/qxl_debugfs.c b/drivers/gpu/drm/qxl/qxl_debugfs.c index a4f4175bbdbe..88123047fdd4 100644 --- a/drivers/gpu/drm/qxl/qxl_debugfs.c +++ b/drivers/gpu/drm/qxl/qxl_debugfs.c @@ -79,36 +79,30 @@ static struct drm_info_list qxl_debugfs_list[] = { #define QXL_DEBUGFS_ENTRIES ARRAY_SIZE(qxl_debugfs_list) #endif
-int +void qxl_debugfs_init(struct drm_minor *minor) { #if defined(CONFIG_DEBUG_FS) - int r; struct qxl_device *dev = (struct qxl_device *) minor->dev->dev_private;
drm_debugfs_create_files(qxl_debugfs_list, QXL_DEBUGFS_ENTRIES, minor->debugfs_root, minor);
- r = qxl_ttm_debugfs_init(dev); - if (r) { - DRM_ERROR("Failed to init TTM debugfs\n"); - return r; - } + qxl_ttm_debugfs_init(dev); #endif - return 0; }
-int qxl_debugfs_add_files(struct qxl_device *qdev, - struct drm_info_list *files, - unsigned int nfiles) +void qxl_debugfs_add_files(struct qxl_device *qdev, + struct drm_info_list *files, + unsigned int nfiles) { unsigned int i;
for (i = 0; i < qdev->debugfs_count; i++) { if (qdev->debugfs[i].files == files) { /* Already registered */ - return 0; + return; } }
@@ -116,7 +110,7 @@ int qxl_debugfs_add_files(struct qxl_device *qdev, if (i > QXL_DEBUGFS_MAX_COMPONENTS) { DRM_ERROR("Reached maximum number of debugfs components.\n"); DRM_ERROR("Report so we increase QXL_DEBUGFS_MAX_COMPONENTS.\n"); - return -EINVAL; + return; } qdev->debugfs[qdev->debugfs_count].files = files; qdev->debugfs[qdev->debugfs_count].num_files = nfiles; @@ -126,5 +120,4 @@ int qxl_debugfs_add_files(struct qxl_device *qdev, qdev->ddev.primary->debugfs_root, qdev->ddev.primary); #endif - return 0; } diff --git a/drivers/gpu/drm/qxl/qxl_drv.h b/drivers/gpu/drm/qxl/qxl_drv.h index 27e45a2d6b52..435126facc9b 100644 --- a/drivers/gpu/drm/qxl/qxl_drv.h +++ b/drivers/gpu/drm/qxl/qxl_drv.h @@ -190,9 +190,6 @@ struct qxl_debugfs { unsigned int num_files; };
-int qxl_debugfs_add_files(struct qxl_device *rdev, - struct drm_info_list *files, - unsigned int nfiles); int qxl_debugfs_fence_init(struct qxl_device *rdev);
struct qxl_device; @@ -442,8 +439,8 @@ int qxl_garbage_collect(struct qxl_device *qdev);
/* debugfs */
-int qxl_debugfs_init(struct drm_minor *minor); -int qxl_ttm_debugfs_init(struct qxl_device *qdev); +void qxl_debugfs_init(struct drm_minor *minor); +void qxl_ttm_debugfs_init(struct qxl_device *qdev);
/* qxl_prime.c */ int qxl_gem_prime_pin(struct drm_gem_object *obj); @@ -461,9 +458,9 @@ int qxl_gem_prime_mmap(struct drm_gem_object *obj, int qxl_irq_init(struct qxl_device *qdev); irqreturn_t qxl_irq_handler(int irq, void *arg);
-int qxl_debugfs_add_files(struct qxl_device *qdev, - struct drm_info_list *files, - unsigned int nfiles); +void qxl_debugfs_add_files(struct qxl_device *qdev, + struct drm_info_list *files, + unsigned int nfiles);
int qxl_surface_id_alloc(struct qxl_device *qdev, struct qxl_bo *surf); diff --git a/drivers/gpu/drm/qxl/qxl_ttm.c b/drivers/gpu/drm/qxl/qxl_ttm.c index 62a5e424971b..93a2eb14844b 100644 --- a/drivers/gpu/drm/qxl/qxl_ttm.c +++ b/drivers/gpu/drm/qxl/qxl_ttm.c @@ -322,7 +322,7 @@ static int qxl_mm_dump_table(struct seq_file *m, void *data) } #endif
-int qxl_ttm_debugfs_init(struct qxl_device *qdev) +void qxl_ttm_debugfs_init(struct qxl_device *qdev) { #if defined(CONFIG_DEBUG_FS) static struct drm_info_list qxl_mem_types_list[QXL_DEBUGFS_MEM_TYPES]; @@ -343,8 +343,6 @@ int qxl_ttm_debugfs_init(struct qxl_device *qdev) qxl_mem_types_list[i].data = qdev->mman.bdev.man[TTM_PL_PRIV].priv;
} - return qxl_debugfs_add_files(qdev, qxl_mem_types_list, i); -#else - return 0; + qxl_debugfs_add_files(qdev, qxl_mem_types_list, i); #endif } diff --git a/drivers/gpu/drm/sti/sti_drv.c b/drivers/gpu/drm/sti/sti_drv.c index 5ab36f6001fc..3f9db3e3f397 100644 --- a/drivers/gpu/drm/sti/sti_drv.c +++ b/drivers/gpu/drm/sti/sti_drv.c @@ -92,7 +92,7 @@ static struct drm_info_list sti_drm_dbg_list[] = { {"fps_get", sti_drm_fps_dbg_show, 0}, };
-static int sti_drm_dbg_init(struct drm_minor *minor) +static void sti_drm_dbg_init(struct drm_minor *minor) { drm_debugfs_create_files(sti_drm_dbg_list, ARRAY_SIZE(sti_drm_dbg_list), @@ -102,7 +102,6 @@ static int sti_drm_dbg_init(struct drm_minor *minor) minor->dev, &sti_drm_fps_fops);
DRM_INFO("%s: debugfs installed\n", DRIVER_NAME); - return 0; }
static const struct drm_mode_config_funcs sti_mode_config_funcs = { diff --git a/drivers/gpu/drm/tegra/drm.c b/drivers/gpu/drm/tegra/drm.c index 6ec224f3d824..d4f51b5c7ee5 100644 --- a/drivers/gpu/drm/tegra/drm.c +++ b/drivers/gpu/drm/tegra/drm.c @@ -839,12 +839,11 @@ static struct drm_info_list tegra_debugfs_list[] = { { "iova", tegra_debugfs_iova, 0 }, };
-static int tegra_debugfs_init(struct drm_minor *minor) +static void tegra_debugfs_init(struct drm_minor *minor) { drm_debugfs_create_files(tegra_debugfs_list, ARRAY_SIZE(tegra_debugfs_list), minor->debugfs_root, minor); - return 0; } #endif
diff --git a/drivers/gpu/drm/tilcdc/tilcdc_drv.c b/drivers/gpu/drm/tilcdc/tilcdc_drv.c index 3f7071eb9c78..78c1877d13a8 100644 --- a/drivers/gpu/drm/tilcdc/tilcdc_drv.c +++ b/drivers/gpu/drm/tilcdc/tilcdc_drv.c @@ -478,7 +478,7 @@ static struct drm_info_list tilcdc_debugfs_list[] = { { "mm", tilcdc_mm_show, 0 }, };
-static int tilcdc_debugfs_init(struct drm_minor *minor) +static void tilcdc_debugfs_init(struct drm_minor *minor) { struct tilcdc_module *mod;
@@ -489,8 +489,6 @@ static int tilcdc_debugfs_init(struct drm_minor *minor) list_for_each_entry(mod, &module_list, list) if (mod->funcs->debugfs_init) mod->funcs->debugfs_init(mod, minor); - - return 0; } #endif
diff --git a/drivers/gpu/drm/v3d/v3d_debugfs.c b/drivers/gpu/drm/v3d/v3d_debugfs.c index 57dded6a3957..2b0ea5f8febd 100644 --- a/drivers/gpu/drm/v3d/v3d_debugfs.c +++ b/drivers/gpu/drm/v3d/v3d_debugfs.c @@ -258,11 +258,10 @@ static const struct drm_info_list v3d_debugfs_list[] = { {"bo_stats", v3d_debugfs_bo_stats, 0}, };
-int +void v3d_debugfs_init(struct drm_minor *minor) { drm_debugfs_create_files(v3d_debugfs_list, ARRAY_SIZE(v3d_debugfs_list), minor->debugfs_root, minor); - return 0; } diff --git a/drivers/gpu/drm/v3d/v3d_drv.h b/drivers/gpu/drm/v3d/v3d_drv.h index ac2603334587..e0775c884553 100644 --- a/drivers/gpu/drm/v3d/v3d_drv.h +++ b/drivers/gpu/drm/v3d/v3d_drv.h @@ -316,7 +316,7 @@ struct drm_gem_object *v3d_prime_import_sg_table(struct drm_device *dev, struct sg_table *sgt);
/* v3d_debugfs.c */ -int v3d_debugfs_init(struct drm_minor *minor); +void v3d_debugfs_init(struct drm_minor *minor);
/* v3d_fence.c */ extern const struct dma_fence_ops v3d_fence_ops; diff --git a/drivers/gpu/drm/vc4/vc4_debugfs.c b/drivers/gpu/drm/vc4/vc4_debugfs.c index 1835f12337ec..4fbbf980a299 100644 --- a/drivers/gpu/drm/vc4/vc4_debugfs.c +++ b/drivers/gpu/drm/vc4/vc4_debugfs.c @@ -20,7 +20,7 @@ struct vc4_debugfs_info_entry { * Called at drm_dev_register() time on each of the minors registered * by the DRM device, to attach the debugfs files. */ -int +void vc4_debugfs_init(struct drm_minor *minor) { struct vc4_dev *vc4 = to_vc4_dev(minor->dev); @@ -33,8 +33,6 @@ vc4_debugfs_init(struct drm_minor *minor) drm_debugfs_create_files(&entry->info, 1, minor->debugfs_root, minor); } - - return 0; }
static int vc4_debugfs_regset32(struct seq_file *m, void *unused) diff --git a/drivers/gpu/drm/vc4/vc4_drv.h b/drivers/gpu/drm/vc4/vc4_drv.h index 139d25a8328e..3b1f02efefbe 100644 --- a/drivers/gpu/drm/vc4/vc4_drv.h +++ b/drivers/gpu/drm/vc4/vc4_drv.h @@ -759,7 +759,7 @@ void vc4_crtc_get_margins(struct drm_crtc_state *state, unsigned int *top, unsigned int *bottom);
/* vc4_debugfs.c */ -int vc4_debugfs_init(struct drm_minor *minor); +void vc4_debugfs_init(struct drm_minor *minor); #ifdef CONFIG_DEBUG_FS void vc4_debugfs_add_file(struct drm_device *drm, const char *filename, diff --git a/drivers/gpu/drm/virtio/virtgpu_debugfs.c b/drivers/gpu/drm/virtio/virtgpu_debugfs.c index e27120d512b0..3221520f61f0 100644 --- a/drivers/gpu/drm/virtio/virtgpu_debugfs.c +++ b/drivers/gpu/drm/virtio/virtgpu_debugfs.c @@ -72,11 +72,10 @@ static struct drm_info_list virtio_gpu_debugfs_list[] = {
#define VIRTIO_GPU_DEBUGFS_ENTRIES ARRAY_SIZE(virtio_gpu_debugfs_list)
-int +void virtio_gpu_debugfs_init(struct drm_minor *minor) { drm_debugfs_create_files(virtio_gpu_debugfs_list, VIRTIO_GPU_DEBUGFS_ENTRIES, minor->debugfs_root, minor); - return 0; } diff --git a/drivers/gpu/drm/virtio/virtgpu_drv.h b/drivers/gpu/drm/virtio/virtgpu_drv.h index c1824bdf2418..824f9f15926c 100644 --- a/drivers/gpu/drm/virtio/virtgpu_drv.h +++ b/drivers/gpu/drm/virtio/virtgpu_drv.h @@ -379,6 +379,6 @@ struct drm_gem_object *virtgpu_gem_prime_import_sg_table( struct sg_table *sgt);
/* virgl debugfs */ -int virtio_gpu_debugfs_init(struct drm_minor *minor); +void virtio_gpu_debugfs_init(struct drm_minor *minor);
#endif diff --git a/include/drm/drm_client.h b/include/drm/drm_client.h index 3ed5dee899fd..7402f852d3c4 100644 --- a/include/drm/drm_client.h +++ b/include/drm/drm_client.h @@ -188,6 +188,6 @@ int drm_client_modeset_dpms(struct drm_client_dev *client, int mode); drm_for_each_connector_iter(connector, iter) \ if (connector->connector_type != DRM_MODE_CONNECTOR_WRITEBACK)
-int drm_client_debugfs_init(struct drm_minor *minor); +void drm_client_debugfs_init(struct drm_minor *minor);
#endif diff --git a/include/drm/drm_drv.h b/include/drm/drm_drv.h index 97109df5beac..c6ae888c672b 100644 --- a/include/drm/drm_drv.h +++ b/include/drm/drm_drv.h @@ -323,7 +323,7 @@ struct drm_driver { * * Allows drivers to create driver-specific debugfs files. */ - int (*debugfs_init)(struct drm_minor *minor); + void (*debugfs_init)(struct drm_minor *minor);
/** * @gem_free_object: deconstructor for drm_gem_objects diff --git a/include/drm/drm_gem_vram_helper.h b/include/drm/drm_gem_vram_helper.h index 0f6e47213d8d..b63bcd1b996d 100644 --- a/include/drm/drm_gem_vram_helper.h +++ b/include/drm/drm_gem_vram_helper.h @@ -196,7 +196,7 @@ static inline struct drm_vram_mm *drm_vram_mm_of_bdev( return container_of(bdev, struct drm_vram_mm, bdev); }
-int drm_vram_mm_debugfs_init(struct drm_minor *minor); +void drm_vram_mm_debugfs_init(struct drm_minor *minor);
/* * Helpers for integration with struct drm_device diff --git a/include/drm/drm_mipi_dbi.h b/include/drm/drm_mipi_dbi.h index 33f325f5af2b..30ebdfd8a51f 100644 --- a/include/drm/drm_mipi_dbi.h +++ b/include/drm/drm_mipi_dbi.h @@ -192,7 +192,7 @@ int mipi_dbi_buf_copy(void *dst, struct drm_framebuffer *fb, })
#ifdef CONFIG_DEBUG_FS -int mipi_dbi_debugfs_init(struct drm_minor *minor); +void mipi_dbi_debugfs_init(struct drm_minor *minor); #else #define mipi_dbi_debugfs_init NULL #endif