On Tue, 2021-03-30 at 15:39 +0800, Kai Ye wrote:
> use a macro replace of a magic number.
Given the use of 32 in the same test, this
seems more obfuscating that useful to me.
> diff --git a/drivers/crypto/hisilicon/sgl.c b/drivers/crypto/hisilicon/sgl.c
[]
> @@ -9,6 +9,7 @@
> #define HISI_ACC_SGL_NR_MAX 256
> #define HISI_ACC_SGL_ALIGN_SIZE 64
> #define HISI_ACC_MEM_BLOCK_NR 5
> +#define HISI_ACC_BLOCK_SIZE_MAX_SHIFT 31
>
>
> struct acc_hw_sge {
> dma_addr_t buf;
> @@ -67,7 +68,8 @@ struct hisi_acc_sgl_pool *hisi_acc_create_sgl_pool(struct device *dev,
> sgl_size = sizeof(struct acc_hw_sge) * sge_nr +
> sizeof(struct hisi_acc_hw_sgl);
> block_size = 1 << (PAGE_SHIFT + MAX_ORDER <= 32 ?
> - PAGE_SHIFT + MAX_ORDER - 1 : 31);
> + PAGE_SHIFT + MAX_ORDER - 1 :
> + HISI_ACC_BLOCK_SIZE_MAX_SHIFT);
> sgl_num_per_block = block_size / sgl_size;
> block_num = count / sgl_num_per_block;
> remain_sgl = count % sgl_num_per_block;
