From: Horia Geanta Subject: [PATCH 4/4] crypto: talitos - static code checker fixes Date: Mon, 11 May 2015 20:04:56 +0300 Message-ID: <1431363896-2745-1-git-send-email-horia.geanta@freescale.com> References: <1431363804-2331-1-git-send-email-horia.geanta@freescale.com> Mime-Version: 1.0 Content-Type: text/plain Cc: , "David S. Miller" To: Herbert Xu Return-path: Received: from mail-bl2on0119.outbound.protection.outlook.com ([65.55.169.119]:55808 "EHLO na01-bl2-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751039AbbEKRUt (ORCPT ); Mon, 11 May 2015 13:20:49 -0400 In-Reply-To: <1431363804-2331-1-git-send-email-horia.geanta@freescale.com> Sender: linux-crypto-owner@vger.kernel.org List-ID: -change req_ctx->nbuf from u64 to unsigned int to silence checker warnings; this is safe since nbuf value is <= HASH_MAX_BLOCK_SIZE -remove unused value read from TALITOS_CCPSR; there is no requirement to read upper 32b before reading lower 32b of a 64b register; SEC RM mentions: "reads can always be done by byte, word, or dword" -remove unused return value of sg_to_link_tbl() -change "len" parameter of map_single_talitos_ptr() and to_talitos_ptr_len() to unsigned int; later, cpu_to_be16 will __force downcast the value to unsigned short without any checker warning Signed-off-by: Horia Geanta --- drivers/crypto/talitos.c | 12 +++++------- 1 file changed, 5 insertions(+), 7 deletions(-) diff --git a/drivers/crypto/talitos.c b/drivers/crypto/talitos.c index 7367f6cba2ed..cb183b0b8578 100644 --- a/drivers/crypto/talitos.c +++ b/drivers/crypto/talitos.c @@ -63,7 +63,7 @@ static void to_talitos_ptr(struct talitos_ptr *ptr, dma_addr_t dma_addr, ptr->eptr = upper_32_bits(dma_addr); } -static void to_talitos_ptr_len(struct talitos_ptr *ptr, unsigned short len, +static void to_talitos_ptr_len(struct talitos_ptr *ptr, unsigned int len, bool is_sec1) { if (is_sec1) { @@ -94,7 +94,7 @@ static void to_talitos_ptr_extent_clear(struct talitos_ptr *ptr, bool is_sec1) */ static void map_single_talitos_ptr(struct device *dev, struct talitos_ptr *ptr, - unsigned short len, void *data, + unsigned int len, void *data, enum dma_data_direction dir) { dma_addr_t dma_addr = dma_map_single(dev, data, len, dir); @@ -543,7 +543,7 @@ static void talitos_error(struct device *dev, u32 isr, u32 isr_lo) struct talitos_private *priv = dev_get_drvdata(dev); unsigned int timeout = TALITOS_TIMEOUT; int ch, error, reset_dev = 0; - u32 v, v_lo; + u32 v_lo; bool is_sec1 = has_ftr_sec1(priv); int reset_ch = is_sec1 ? 1 : 0; /* only SEC2 supports continuation */ @@ -560,7 +560,6 @@ static void talitos_error(struct device *dev, u32 isr, u32 isr_lo) error = -EINVAL; - v = in_be32(priv->chan[ch].reg + TALITOS_CCPSR); v_lo = in_be32(priv->chan[ch].reg + TALITOS_CCPSR_LO); if (v_lo & TALITOS_CCPSR_LO_DOF) { @@ -815,7 +814,7 @@ struct talitos_ahash_req_ctx { unsigned int first; unsigned int last; unsigned int to_hash_later; - u64 nbuf; + unsigned int nbuf; struct scatterlist bufsl[2]; struct scatterlist *psrc; }; @@ -1639,8 +1638,7 @@ void map_sg_out_talitos_ptr(struct device *dev, struct scatterlist *dst, (edesc->src_nents + 1) * sizeof(struct talitos_ptr), 0); ptr->j_extent |= DESC_PTR_LNKTBL_JUMP; - sg_count = sg_to_link_tbl(dst, sg_count, len, - link_tbl_ptr); + sg_to_link_tbl(dst, sg_count, len, link_tbl_ptr); dma_sync_single_for_device(dev, edesc->dma_link_tbl, edesc->dma_len, DMA_BIDIRECTIONAL); -- 1.8.3.1