crypto: sun4i-ss - remove conditional checks against 0

Cosmetic clean up if conditional checks on 0s values.

Signed-off-by: Antoine Tenart <antoine.tenart@free-electrons.com>
Tested-by: Corentin Labbe <clabbe.montjoie@gmail.com>
Acked-by: Corentin Labbe <clabbe.montjoie@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

1 files changed, 20 insertions, 20 deletions

diff --git a/drivers/crypto/sunxi-ss/sun4i-ss-hash.c b/drivers/crypto/sunxi-ss/sun4i-ss-hash.c
index 855325338844..39f0abe5ee25 100644
--- a/drivers/crypto/sunxi-ss/sun4i-ss-hash.c
+++ b/drivers/crypto/sunxi-ss/sun4i-ss-hash.c
@@ -60,7 +60,7 @@ int sun4i_hash_export_md5(struct ahash_request *areq, void *out)
 
 	memcpy(octx->block, op->buf, op->len);
 
-	if (op->byte_count > 0) {
+	if (op->byte_count) {
 		for (i = 0; i < 4; i++)
 			octx->hash[i] = op->hash[i];
 	} else {
@@ -102,7 +102,7 @@ int sun4i_hash_export_sha1(struct ahash_request *areq, void *out)
 
 	memcpy(octx->buffer, op->buf, op->len);
 
-	if (op->byte_count > 0) {
+	if (op->byte_count) {
 		for (i = 0; i < 5; i++)
 			octx->state[i] = op->hash[i];
 	} else {
@@ -195,7 +195,7 @@ static int sun4i_hash(struct ahash_request *areq)
 		op->byte_count, areq->nbytes, op->mode,
 		op->len, op->hash[0]);
 
-	if (unlikely(areq->nbytes == 0) && (op->flags & SS_HASH_FINAL) == 0)
+	if (unlikely(!areq->nbytes) && !(op->flags & SS_HASH_FINAL))
 		return 0;
 
 	/* protect against overflow */
@@ -204,7 +204,7 @@ static int sun4i_hash(struct ahash_request *areq)
 		return -EINVAL;
 	}
 
-	if (op->len + areq->nbytes < 64 && (op->flags & SS_HASH_FINAL) == 0) {
+	if (op->len + areq->nbytes < 64 && !(op->flags & SS_HASH_FINAL)) {
 		/* linearize data to op->buf */
 		copied = sg_pcopy_to_buffer(areq->src, sg_nents(areq->src),
 					    op->buf + op->len, areq->nbytes, 0);
@@ -218,7 +218,7 @@ static int sun4i_hash(struct ahash_request *areq)
 	 * if some data have been processed before,
 	 * we need to restore the partial hash state
 	 */
-	if (op->byte_count > 0) {
+	if (op->byte_count) {
 		ivmode = SS_IV_ARBITRARY;
 		for (i = 0; i < 5; i++)
 			writel(op->hash[i], ss->base + SS_IV0 + i * 4);
@@ -226,11 +226,11 @@ static int sun4i_hash(struct ahash_request *areq)
 	/* Enable the device */
 	writel(op->mode | SS_ENABLED | ivmode, ss->base + SS_CTL);
 
-	if ((op->flags & SS_HASH_UPDATE) == 0)
+	if (!(op->flags & SS_HASH_UPDATE))
 		goto hash_final;
 
 	/* start of handling data */
-	if ((op->flags & SS_HASH_FINAL) == 0) {
+	if (!(op->flags & SS_HASH_FINAL)) {
 		end = ((areq->nbytes + op->len) / 64) * 64 - op->len;
 
 		if (end > areq->nbytes || areq->nbytes - end > 63) {
@@ -244,14 +244,14 @@ static int sun4i_hash(struct ahash_request *areq)
 		end = ((areq->nbytes + op->len) / 4) * 4 - op->len;
 	}
 
-	/* TODO if SGlen % 4 and op->len == 0 then DMA */
+	/* TODO if SGlen % 4 and !op->len then DMA */
 	i = 1;
 	while (in_sg && i == 1) {
-		if ((in_sg->length % 4) != 0)
+		if (in_sg->length % 4)
 			i = 0;
 		in_sg = sg_next(in_sg);
 	}
-	if (i == 1 && op->len == 0)
+	if (i == 1 && !op->len)
 		dev_dbg(ss->dev, "We can DMA\n");
 
 	i = 0;
@@ -266,7 +266,7 @@ static int sun4i_hash(struct ahash_request *areq)
 		 * - the buffer is already used
 		 * - the SG does not have enough byte remaining ( < 4)
 		 */
-		if (op->len > 0 || (mi.length - in_i) < 4) {
+		if (op->len || (mi.length - in_i) < 4) {
 			/*
 			 * if we have entered here we have two reason to stop
 			 * - the buffer is full
@@ -285,7 +285,7 @@ static int sun4i_hash(struct ahash_request *areq)
 					in_i = 0;
 				}
 			}
-			if (op->len > 3 && (op->len % 4) == 0) {
+			if (op->len > 3 && !(op->len % 4)) {
 				/* write buf to the device */
 				writesl(ss->base + SS_RXFIFO, op->buf,
 					op->len / 4);
@@ -304,7 +304,7 @@ static int sun4i_hash(struct ahash_request *areq)
 			i += todo * 4;
 			in_i += todo * 4;
 			rx_cnt -= todo;
-			if (rx_cnt == 0) {
+			if (!rx_cnt) {
 				spaces = readl(ss->base + SS_FCSR);
 				rx_cnt = SS_RXFIFO_SPACES(spaces);
 			}
@@ -342,7 +342,7 @@ static int sun4i_hash(struct ahash_request *areq)
 	 * Now if we have the flag final go to finalize part
 	 * If not, store the partial hash
 	 */
-	if ((op->flags & SS_HASH_FINAL) > 0)
+	if (op->flags & SS_HASH_FINAL)
 		goto hash_final;
 
 	writel(op->mode | SS_ENABLED | SS_DATA_END, ss->base + SS_CTL);
@@ -350,7 +350,7 @@ static int sun4i_hash(struct ahash_request *areq)
 	do {
 		v = readl(ss->base + SS_CTL);
 		i++;
-	} while (i < SS_TIMEOUT && (v & SS_DATA_END) > 0);
+	} while (i < SS_TIMEOUT && (v & SS_DATA_END));
 	if (unlikely(i >= SS_TIMEOUT)) {
 		dev_err_ratelimited(ss->dev,
 				    "ERROR: hash end timeout %d>%d ctl=%x len=%u\n",
@@ -379,9 +379,9 @@ static int sun4i_hash(struct ahash_request *areq)
 hash_final:
 
 	/* write the remaining words of the wait buffer */
-	if (op->len > 0) {
+	if (op->len) {
 		nwait = op->len / 4;
-		if (nwait > 0) {
+		if (nwait) {
 			writesl(ss->base + SS_RXFIFO, op->buf, nwait);
 			op->byte_count += 4 * nwait;
 		}
@@ -391,7 +391,7 @@ hash_final:
 	}
 
 	/* write the remaining bytes of the nbw buffer */
-	if (nbw > 0) {
+	if (nbw) {
 		wb |= ((1 << 7) << (nbw * 8));
 		bf[j++] = wb;
 	} else {
@@ -444,7 +444,7 @@ hash_final:
 	do {
 		v = readl(ss->base + SS_CTL);
 		i++;
-	} while (i < SS_TIMEOUT && (v & SS_DATA_END) > 0);
+	} while (i < SS_TIMEOUT && (v & SS_DATA_END));
 	if (unlikely(i >= SS_TIMEOUT)) {
 		dev_err_ratelimited(ss->dev,
 				    "ERROR: hash end timeout %d>%d ctl=%x len=%u\n",
@@ -504,7 +504,7 @@ int sun4i_hash_digest(struct ahash_request *areq)
 	struct sun4i_req_ctx *op = ahash_request_ctx(areq);
 
 	err = sun4i_hash_init(areq);
-	if (err != 0)
+	if (err)
 		return err;
 
 	op->flags = SS_HASH_UPDATE | SS_HASH_FINAL;