Re: [PATCH 1/7] tee: remove unused tee_shm_pool_alloc_res_mem()

Tyler Hicks
2021-06-09T14:03:11Z

On 2021-06-09 12:23:18, Jens Wiklander wrote:
> None of the drivers in the TEE subsystem uses
> tee_shm_pool_alloc_res_mem() so remove the function.
>
> Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>

Reviewed-by: Tyler Hicks <tyhicks@linux.microsoft.com>

Tyler

> ---
> drivers/tee/tee_shm_pool.c | 56 --------------------------------------
> include/linux/tee_drv.h | 30 --------------------
> 2 files changed, 86 deletions(-)
>
> diff --git a/drivers/tee/tee_shm_pool.c b/drivers/tee/tee_shm_pool.c
> index fcbb461fc59c..a9f9d50fd181 100644
> --- a/drivers/tee/tee_shm_pool.c
> +++ b/drivers/tee/tee_shm_pool.c
> @@ -47,62 +47,6 @@ static const struct tee_shm_pool_mgr_ops pool_ops_generic = {
> .destroy_poolmgr = pool_op_gen_destroy_poolmgr,
> };
>
> -/**
> - * tee_shm_pool_alloc_res_mem() - Create a shared memory pool from reserved
> - * memory range
> - * @priv_info: Information for driver private shared memory pool
> - * @dmabuf_info: Information for dma-buf shared memory pool
> - *
> - * Start and end of pools will must be page aligned.
> - *
> - * Allocation with the flag TEE_SHM_DMA_BUF set will use the range supplied
> - * in @dmabuf, others will use the range provided by @priv.
> - *
> - * @returns pointer to a 'struct tee_shm_pool' or an ERR_PTR on failure.
> - */
> -struct tee_shm_pool *
> -tee_shm_pool_alloc_res_mem(struct tee_shm_pool_mem_info *priv_info,
> - struct tee_shm_pool_mem_info *dmabuf_info)
> -{
> - struct tee_shm_pool_mgr *priv_mgr;
> - struct tee_shm_pool_mgr *dmabuf_mgr;
> - void *rc;
> -
> - /*
> - * Create the pool for driver private shared memory
> - */
> - rc = tee_shm_pool_mgr_alloc_res_mem(priv_info->vaddr, priv_info->paddr,
> - priv_info->size,
> - 3 /* 8 byte aligned */);
> - if (IS_ERR(rc))
> - return rc;
> - priv_mgr = rc;
> -
> - /*
> - * Create the pool for dma_buf shared memory
> - */
> - rc = tee_shm_pool_mgr_alloc_res_mem(dmabuf_info->vaddr,
> - dmabuf_info->paddr,
> - dmabuf_info->size, PAGE_SHIFT);
> - if (IS_ERR(rc))
> - goto err_free_priv_mgr;
> - dmabuf_mgr = rc;
> -
> - rc = tee_shm_pool_alloc(priv_mgr, dmabuf_mgr);
> - if (IS_ERR(rc))
> - goto err_free_dmabuf_mgr;
> -
> - return rc;
> -
> -err_free_dmabuf_mgr:
> - tee_shm_pool_mgr_destroy(dmabuf_mgr);
> -err_free_priv_mgr:
> - tee_shm_pool_mgr_destroy(priv_mgr);
> -
> - return rc;
> -}
> -EXPORT_SYMBOL_GPL(tee_shm_pool_alloc_res_mem);
> -
> struct tee_shm_pool_mgr *tee_shm_pool_mgr_alloc_res_mem(unsigned long vaddr,
> phys_addr_t paddr,
> size_t size,
> diff --git a/include/linux/tee_drv.h b/include/linux/tee_drv.h
> index 54269e47ac9a..53b9b2a13a87 100644
> --- a/include/linux/tee_drv.h
> +++ b/include/linux/tee_drv.h
> @@ -272,36 +272,6 @@ static inline void tee_shm_pool_mgr_destroy(struct tee_shm_pool_mgr *poolm)
> poolm->ops->destroy_poolmgr(poolm);
> }
>
> -/**
> - * struct tee_shm_pool_mem_info - holds information needed to create a shared
> - * memory pool
> - * @vaddr: Virtual address of start of pool
> - * @paddr: Physical address of start of pool
> - * @size: Size in bytes of the pool
> - */
> -struct tee_shm_pool_mem_info {
> - unsigned long vaddr;
> - phys_addr_t paddr;
> - size_t size;
> -};
> -
> -/**
> - * tee_shm_pool_alloc_res_mem() - Create a shared memory pool from reserved
> - * memory range
> - * @priv_info: Information for driver private shared memory pool
> - * @dmabuf_info: Information for dma-buf shared memory pool
> - *
> - * Start and end of pools will must be page aligned.
> - *
> - * Allocation with the flag TEE_SHM_DMA_BUF set will use the range supplied
> - * in @dmabuf, others will use the range provided by @priv.
> - *
> - * @returns pointer to a 'struct tee_shm_pool' or an ERR_PTR on failure.
> - */
> -struct tee_shm_pool *
> -tee_shm_pool_alloc_res_mem(struct tee_shm_pool_mem_info *priv_info,
> - struct tee_shm_pool_mem_info *dmabuf_info);
> -
> /**
> * tee_shm_pool_free() - Free a shared memory pool
> * @pool: The shared memory pool to free
> --
> 2.31.1
>