Date: Mon, 30 Sep 2024 04:45:30 GMT From: Zhenlei Huang <zlei@FreeBSD.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-branches@FreeBSD.org Subject: git: 95532d15a12c - stable/14 - drm2: Stop checking for failures from malloc(M_WAITOK) Message-ID: <202409300445.48U4jUod087176@gitrepo.freebsd.org>
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The branch stable/14 has been updated by zlei: URL: https://cgit.FreeBSD.org/src/commit/?id=95532d15a12c9cbf7c5e62e912de90919af7db24 commit 95532d15a12c9cbf7c5e62e912de90919af7db24 Author: Zhenlei Huang <zlei@FreeBSD.org> AuthorDate: 2024-09-03 10:25:26 +0000 Commit: Zhenlei Huang <zlei@FreeBSD.org> CommitDate: 2024-09-30 04:44:21 +0000 drm2: Stop checking for failures from malloc(M_WAITOK) MFC after: 1 week Differential Revision: https://reviews.freebsd.org/D45852 (cherry picked from commit 6dbf3aca4f5c4f7287f186360c2391f2adfea8d6) --- sys/dev/drm2/drm_buffer.c | 30 ----------------------------- sys/dev/drm2/drm_crtc.c | 45 +------------------------------------------ sys/dev/drm2/ttm/ttm_object.c | 5 ----- 3 files changed, 1 insertion(+), 79 deletions(-) diff --git a/sys/dev/drm2/drm_buffer.c b/sys/dev/drm2/drm_buffer.c index 8a674397262e..8069f2c8c4c6 100644 --- a/sys/dev/drm2/drm_buffer.c +++ b/sys/dev/drm2/drm_buffer.c @@ -50,45 +50,15 @@ int drm_buffer_alloc(struct drm_buffer **buf, int size) * variable sized */ *buf = malloc(sizeof(struct drm_buffer) + nr_pages*sizeof(char *), DRM_MEM_DRIVER, M_ZERO | M_WAITOK); - - if (*buf == NULL) { - DRM_ERROR("Failed to allocate drm buffer object to hold" - " %d bytes in %d pages.\n", - size, nr_pages); - return -ENOMEM; - } - (*buf)->size = size; for (idx = 0; idx < nr_pages; ++idx) { - (*buf)->data[idx] = malloc(min(PAGE_SIZE, size - idx * PAGE_SIZE), DRM_MEM_DRIVER, M_WAITOK); - - - if ((*buf)->data[idx] == NULL) { - DRM_ERROR("Failed to allocate %dth page for drm" - " buffer with %d bytes and %d pages.\n", - idx + 1, size, nr_pages); - goto error_out; - } - } return 0; - -error_out: - - /* Only last element can be null pointer so check for it first. */ - if ((*buf)->data[idx]) - free((*buf)->data[idx], DRM_MEM_DRIVER); - - for (--idx; idx >= 0; --idx) - free((*buf)->data[idx], DRM_MEM_DRIVER); - - free(*buf, DRM_MEM_DRIVER); - return -ENOMEM; } EXPORT_SYMBOL(drm_buffer_alloc); diff --git a/sys/dev/drm2/drm_crtc.c b/sys/dev/drm2/drm_crtc.c index b9415082e7a1..a163c7455773 100644 --- a/sys/dev/drm2/drm_crtc.c +++ b/sys/dev/drm2/drm_crtc.c @@ -662,13 +662,6 @@ int drm_plane_init(struct drm_device *dev, struct drm_plane *plane, plane->funcs = funcs; plane->format_types = malloc(sizeof(uint32_t) * format_count, DRM_MEM_KMS, M_WAITOK); - if (!plane->format_types) { - DRM_DEBUG_KMS("out of memory when allocating plane\n"); - drm_mode_object_put(dev, &plane->base); - ret = -ENOMEM; - goto out; - } - memcpy(plane->format_types, formats, format_count * sizeof(uint32_t)); plane->format_count = format_count; plane->possible_crtcs = possible_crtcs; @@ -725,8 +718,6 @@ struct drm_display_mode *drm_mode_create(struct drm_device *dev) nmode = malloc(sizeof(struct drm_display_mode), DRM_MEM_KMS, M_WAITOK | M_ZERO); - if (!nmode) - return NULL; if (drm_mode_object_get(dev, &nmode->base, DRM_MODE_OBJECT_MODE)) { free(nmode, DRM_MEM_KMS); @@ -1009,9 +1000,6 @@ int drm_mode_group_init(struct drm_device *dev, struct drm_mode_group *group) group->id_list = malloc(total_objects * sizeof(uint32_t), DRM_MEM_KMS, M_WAITOK | M_ZERO); - if (!group->id_list) - return -ENOMEM; - group->num_crtcs = 0; group->num_connectors = 0; group->num_encoders = 0; @@ -1997,10 +1985,6 @@ int drm_mode_setcrtc(struct drm_device *dev, void *data, connector_set = malloc(crtc_req->count_connectors * sizeof(struct drm_connector *), DRM_MEM_KMS, M_WAITOK); - if (!connector_set) { - ret = -ENOMEM; - goto out; - } for (i = 0; i < crtc_req->count_connectors; i++) { set_connectors_ptr = (uint32_t __user *)(unsigned long)crtc_req->set_connectors_ptr; @@ -2522,11 +2506,6 @@ int drm_mode_dirtyfb_ioctl(struct drm_device *dev, } clips = malloc(num_clips * sizeof(*clips), DRM_MEM_KMS, M_WAITOK | M_ZERO); - if (!clips) { - ret = -ENOMEM; - goto out_err1; - } - ret = copy_from_user(clips, clips_ptr, num_clips * sizeof(*clips)); if (ret) { @@ -2773,15 +2752,10 @@ struct drm_property *drm_property_create(struct drm_device *dev, int flags, property = malloc(sizeof(struct drm_property), DRM_MEM_KMS, M_WAITOK | M_ZERO); - if (!property) - return NULL; - if (num_values) { + if (num_values) property->values = malloc(sizeof(uint64_t)*num_values, DRM_MEM_KMS, M_WAITOK | M_ZERO); - if (!property->values) - goto fail; - } ret = drm_mode_object_get(dev, &property->base, DRM_MODE_OBJECT_PROPERTY); if (ret) @@ -2907,9 +2881,6 @@ int drm_property_add_enum(struct drm_property *property, int index, prop_enum = malloc(sizeof(struct drm_property_enum), DRM_MEM_KMS, M_WAITOK | M_ZERO); - if (!prop_enum) - return -ENOMEM; - strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN); prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0'; prop_enum->value = value; @@ -3103,9 +3074,6 @@ static struct drm_property_blob *drm_property_create_blob(struct drm_device *dev blob = malloc(sizeof(struct drm_property_blob)+length, DRM_MEM_KMS, M_WAITOK | M_ZERO); - if (!blob) - return NULL; - ret = drm_mode_object_get(dev, &blob->base, DRM_MODE_OBJECT_BLOB); if (ret) { free(blob, DRM_MEM_KMS); @@ -3433,10 +3401,6 @@ int drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc, crtc->gamma_store = malloc(gamma_size * sizeof(uint16_t) * 3, DRM_MEM_KMS, M_WAITOK | M_ZERO); - if (!crtc->gamma_store) { - crtc->gamma_size = 0; - return -ENOMEM; - } return 0; } @@ -3631,13 +3595,6 @@ int drm_mode_page_flip_ioctl(struct drm_device *dev, mtx_unlock(&dev->event_lock); e = malloc(sizeof *e, DRM_MEM_KMS, M_WAITOK | M_ZERO); - if (e == NULL) { - mtx_lock(&dev->event_lock); - file_priv->event_space += sizeof e->event; - mtx_unlock(&dev->event_lock); - goto out; - } - e->event.base.type = DRM_EVENT_FLIP_COMPLETE; e->event.base.length = sizeof e->event; e->event.user_data = page_flip->user_data; diff --git a/sys/dev/drm2/ttm/ttm_object.c b/sys/dev/drm2/ttm/ttm_object.c index 8c373618d7ac..31af15cf4c56 100644 --- a/sys/dev/drm2/ttm/ttm_object.c +++ b/sys/dev/drm2/ttm/ttm_object.c @@ -282,11 +282,6 @@ int ttm_ref_object_add(struct ttm_object_file *tfile, if (unlikely(ret != 0)) return ret; ref = malloc(sizeof(*ref), M_TTM_OBJ_REF, M_WAITOK); - if (unlikely(ref == NULL)) { - ttm_mem_global_free(mem_glob, sizeof(*ref)); - return -ENOMEM; - } - ref->hash.key = base->hash.key; ref->obj = base; ref->tfile = tfile;
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