#ifndef __DRM_GEM_CMA_HELPER_H__ #define __DRM_GEM_CMA_HELPER_H__ #include #include /** * struct drm_gem_cma_object - GEM object backed by CMA memory allocations * @base: base GEM object * @paddr: physical address of the backing memory * @sgt: scatter/gather table for imported PRIME buffers * @vaddr: kernel virtual address of the backing memory */ struct drm_gem_cma_object { struct drm_gem_object base; dma_addr_t paddr; struct sg_table *sgt; /* For objects with DMA memory allocated by GEM CMA */ void *vaddr; }; static inline struct drm_gem_cma_object * to_drm_gem_cma_obj(struct drm_gem_object *gem_obj) { return container_of(gem_obj, struct drm_gem_cma_object, base); } /* free GEM object */ void drm_gem_cma_free_object(struct drm_gem_object *gem_obj); /* create memory region for DRM framebuffer */ int drm_gem_cma_dumb_create_internal(struct drm_file *file_priv, struct drm_device *drm, struct drm_mode_create_dumb *args); /* create memory region for DRM framebuffer */ int drm_gem_cma_dumb_create(struct drm_file *file_priv, struct drm_device *drm, struct drm_mode_create_dumb *args); /* map memory region for DRM framebuffer to user space */ int drm_gem_cma_dumb_map_offset(struct drm_file *file_priv, struct drm_device *drm, u32 handle, u64 *offset); /* set vm_flags and we can change the VM attribute to other one at here */ int drm_gem_cma_mmap(struct file *filp, struct vm_area_struct *vma); /* allocate physical memory */ struct drm_gem_cma_object *drm_gem_cma_create(struct drm_device *drm, size_t size); extern const struct vm_operations_struct drm_gem_cma_vm_ops; #ifdef CONFIG_DEBUG_FS void drm_gem_cma_describe(struct drm_gem_cma_object *obj, struct seq_file *m); #endif struct sg_table *drm_gem_cma_prime_get_sg_table(struct drm_gem_object *obj); struct drm_gem_object * drm_gem_cma_prime_import_sg_table(struct drm_device *dev, struct dma_buf_attachment *attach, struct sg_table *sgt); int drm_gem_cma_prime_mmap(struct drm_gem_object *obj, struct vm_area_struct *vma); void *drm_gem_cma_prime_vmap(struct drm_gem_object *obj); void drm_gem_cma_prime_vunmap(struct drm_gem_object *obj, void *vaddr); #endif /* __DRM_GEM_CMA_HELPER_H__ */ next.git/log/drivers/usb/gadget/udc/omap_udc.c'>
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authorJisheng Zhang <jszhang@marvell.com>2016-11-10 17:21:29 +0800
committerMark Brown <broonie@kernel.org>2016-11-11 15:38:08 +0000
commit09f2ba0b0b7c44ecea49cf69a708203b76ba5535 (patch)
tree042df33ac99f77d8b86ac427431e267c33561c35 /drivers/usb/gadget/udc/omap_udc.c
parent1001354ca34179f3db924eb66672442a173147dc (diff)
regulator: gpio: properly check return value of of_get_named_gpio
The function of_get_named_gpio() could return -ENOENT, -EPROBE_DEFER -EINVAL and so on. Currently, for the optional property "enable-gpio", we only check -EPROBE_DEFER, this is not enough since there may be misconfigured "enable-gpio" in the DTB, of_get_named_gpio() will return -EINVAL in this case, we should return immediately here. And for the optional property "gpios", we didn't check the return value, the driver will continue to the point where gpio_request_array() is called, it doesn't make sense to continue if we got -EPROBE_DEFER or -EINVAL here. This patch tries to address these two issues by properly checking the return value of of_get_named_gpio. Signed-off-by: Jisheng Zhang <jszhang@marvell.com> Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/usb/gadget/udc/omap_udc.c')