From: Cristian Stoica Date: Thu, 19 May 2016 15:11:18 +0000 (+0300) Subject: crypto: caam - fix offset field in hw sg entries X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=bd52f1c23255a7c355268215c3c75aabbe11a67a;p=linux-beck.git crypto: caam - fix offset field in hw sg entries The offset field is 13 bits wide; make sure we don't overwrite more than that in the caam hardware scatter gather structure. Signed-off-by: Cristian Stoica Signed-off-by: Horia Geantă Signed-off-by: Herbert Xu --- diff --git a/drivers/crypto/caam/desc.h b/drivers/crypto/caam/desc.h index 1e93c6af2275..fe30ff69088c 100644 --- a/drivers/crypto/caam/desc.h +++ b/drivers/crypto/caam/desc.h @@ -20,7 +20,7 @@ #define SEC4_SG_BPID_MASK 0x000000ff #define SEC4_SG_BPID_SHIFT 16 #define SEC4_SG_LEN_MASK 0x3fffffff /* Excludes EXT and FINAL */ -#define SEC4_SG_OFFS_MASK 0x00001fff +#define SEC4_SG_OFFSET_MASK 0x00001fff struct sec4_sg_entry { #ifdef CONFIG_CRYPTO_DEV_FSL_CAAM_IMX diff --git a/drivers/crypto/caam/sg_sw_sec4.h b/drivers/crypto/caam/sg_sw_sec4.h index 12ec6616e89d..2311341b7356 100644 --- a/drivers/crypto/caam/sg_sw_sec4.h +++ b/drivers/crypto/caam/sg_sw_sec4.h @@ -11,12 +11,12 @@ struct sec4_sg_entry; * convert single dma address to h/w link table format */ static inline void dma_to_sec4_sg_one(struct sec4_sg_entry *sec4_sg_ptr, - dma_addr_t dma, u32 len, u32 offset) + dma_addr_t dma, u32 len, u16 offset) { sec4_sg_ptr->ptr = dma; sec4_sg_ptr->len = len; sec4_sg_ptr->buf_pool_id = 0; - sec4_sg_ptr->offset = offset; + sec4_sg_ptr->offset = offset & SEC4_SG_OFFSET_MASK; #ifdef DEBUG print_hex_dump(KERN_ERR, "sec4_sg_ptr@: ", DUMP_PREFIX_ADDRESS, 16, 4, sec4_sg_ptr, @@ -30,7 +30,7 @@ static inline void dma_to_sec4_sg_one(struct sec4_sg_entry *sec4_sg_ptr, */ static inline struct sec4_sg_entry * sg_to_sec4_sg(struct scatterlist *sg, int sg_count, - struct sec4_sg_entry *sec4_sg_ptr, u32 offset) + struct sec4_sg_entry *sec4_sg_ptr, u16 offset) { while (sg_count) { dma_to_sec4_sg_one(sec4_sg_ptr, sg_dma_address(sg), @@ -48,7 +48,7 @@ sg_to_sec4_sg(struct scatterlist *sg, int sg_count, */ static inline void sg_to_sec4_sg_last(struct scatterlist *sg, int sg_count, struct sec4_sg_entry *sec4_sg_ptr, - u32 offset) + u16 offset) { sec4_sg_ptr = sg_to_sec4_sg(sg, sg_count, sec4_sg_ptr, offset); sec4_sg_ptr->len |= SEC4_SG_LEN_FIN;