write in 30M

hc

2024-02-20 ea08eeccae9297f7aabd2ef7f0c2517ac4549acc

 kernel/drivers/crypto/caam/sg_sw_qm2.h
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@@ -1,35 +1,7 @@
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+/* SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause) */
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 /*
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  * Copyright 2015-2016 Freescale Semiconductor, Inc.
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  * Copyright 2017 NXP
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- *
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- * Redistribution and use in source and binary forms, with or without
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- * modification, are permitted provided that the following conditions are met:
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- *     * Redistributions of source code must retain the above copyright
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- *	 notice, this list of conditions and the following disclaimer.
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- *     * Redistributions in binary form must reproduce the above copyright
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- *	 notice, this list of conditions and the following disclaimer in the
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- *	 documentation and/or other materials provided with the distribution.
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- *     * Neither the names of the above-listed copyright holders nor the
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- *	 names of any contributors may be used to endorse or promote products
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- *	 derived from this software without specific prior written permission.
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- *
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- *
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- * ALTERNATIVELY, this software may be distributed under the terms of the
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- * GNU General Public License ("GPL") as published by the Free Software
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- * Foundation, either version 2 of that License or (at your option) any
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- * later version.
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- *
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- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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- * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE
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- * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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- * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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- * POSSIBILITY OF SUCH DAMAGE.
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  */
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 #ifndef _SG_SW_QM2_H_
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@@ -53,15 +25,19 @@
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  * but does not have final bit; instead, returns last entry
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  */
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 static inline struct dpaa2_sg_entry *
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-sg_to_qm_sg(struct scatterlist *sg, int sg_count,
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+sg_to_qm_sg(struct scatterlist *sg, int len,
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 	    struct dpaa2_sg_entry *qm_sg_ptr, u16 offset)
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 {
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-	while (sg_count && sg) {
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-		dma_to_qm_sg_one(qm_sg_ptr, sg_dma_address(sg),
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-				 sg_dma_len(sg), offset);
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+	int ent_len;
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+
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+	while (len) {
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+		ent_len = min_t(int, sg_dma_len(sg), len);
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+
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+		dma_to_qm_sg_one(qm_sg_ptr, sg_dma_address(sg), ent_len,
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+				 offset);
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 		qm_sg_ptr++;
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 		sg = sg_next(sg);
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-		sg_count--;
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+		len -= ent_len;
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 	}
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 	return qm_sg_ptr - 1;
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 }
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@@ -70,11 +46,11 @@
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  * convert scatterlist to h/w link table format
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  * scatterlist must have been previously dma mapped
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  */
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-static inline void sg_to_qm_sg_last(struct scatterlist *sg, int sg_count,
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+static inline void sg_to_qm_sg_last(struct scatterlist *sg, int len,
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 				    struct dpaa2_sg_entry *qm_sg_ptr,
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 				    u16 offset)
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 {
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-	qm_sg_ptr = sg_to_qm_sg(sg, sg_count, qm_sg_ptr, offset);
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+	qm_sg_ptr = sg_to_qm_sg(sg, len, qm_sg_ptr, offset);
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 	dpaa2_sg_set_final(qm_sg_ptr, true);
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 }
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