linux-kernel - [PATCH v4 05/16] crypto: caam - use devres to allocate 'outring'

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Date:   Wed,  3 Jul 2019 01:13:16 -0700
From:   Andrey Smirnov <andrew.smirnov@...il.com>
To:     linux-crypto@...r.kernel.org
Cc:     Andrey Smirnov <andrew.smirnov@...il.com>,
        Chris Spencer <christopher.spencer@....co.uk>,
        Cory Tusar <cory.tusar@....aero>,
        Chris Healy <cphealy@...il.com>,
        Lucas Stach <l.stach@...gutronix.de>,
        Horia Geantă <horia.geanta@....com>,
        Aymen Sghaier <aymen.sghaier@....com>,
        Leonard Crestez <leonard.crestez@....com>,
        linux-kernel@...r.kernel.org
Subject: [PATCH v4 05/16] crypto: caam - use devres to allocate 'outring'

Use devres to allocate 'outring' and drop corresponding call to
dma_free_coherent() as well as extra references to 'struct
jr_outentry' (needed in following commits). No functional change
inteded.

Signed-off-by: Andrey Smirnov <andrew.smirnov@...il.com>
Cc: Chris Spencer <christopher.spencer@....co.uk>
Cc: Cory Tusar <cory.tusar@....aero>
Cc: Chris Healy <cphealy@...il.com>
Cc: Lucas Stach <l.stach@...gutronix.de>
Cc: Horia Geantă <horia.geanta@....com>
Cc: Aymen Sghaier <aymen.sghaier@....com>
Cc: Leonard Crestez <leonard.crestez@....com>
Cc: linux-crypto@...r.kernel.org
Cc: linux-kernel@...r.kernel.org
---
 drivers/crypto/caam/jr.c | 15 +++++----------
 1 file changed, 5 insertions(+), 10 deletions(-)

diff --git a/drivers/crypto/caam/jr.c b/drivers/crypto/caam/jr.c
index fc7deb445aa8..1eaa91dcc146 100644
--- a/drivers/crypto/caam/jr.c
+++ b/drivers/crypto/caam/jr.c
@@ -108,7 +108,7 @@ static int caam_reset_hw_jr(struct device *dev)
 static int caam_jr_shutdown(struct device *dev)
 {
 	struct caam_drv_private_jr *jrp = dev_get_drvdata(dev);
-	dma_addr_t inpbusaddr, outbusaddr;
+	dma_addr_t inpbusaddr;
 	int ret;
 
 	ret = caam_reset_hw_jr(dev);
@@ -120,11 +120,8 @@ static int caam_jr_shutdown(struct device *dev)
 
 	/* Free rings */
 	inpbusaddr = rd_reg64(&jrp->rregs->inpring_base);
-	outbusaddr = rd_reg64(&jrp->rregs->outring_base);
 	dma_free_coherent(dev, sizeof(dma_addr_t) * JOBR_DEPTH,
 			  jrp->inpring, inpbusaddr);
-	dma_free_coherent(dev, sizeof(struct jr_outentry) * JOBR_DEPTH,
-			  jrp->outring, outbusaddr);
 
 	return ret;
 }
@@ -459,15 +456,16 @@ static int caam_jr_init(struct device *dev)
 	if (!jrp->inpring)
 		goto out_free_irq;
 
-	jrp->outring = dma_alloc_coherent(dev, sizeof(*jrp->outring) *
-					  JOBR_DEPTH, &outbusaddr, GFP_KERNEL);
+	jrp->outring = dmam_alloc_coherent(dev, sizeof(*jrp->outring) *
+					   JOBR_DEPTH, &outbusaddr,
+					   GFP_KERNEL);
 	if (!jrp->outring)
 		goto out_free_inpring;
 
 	jrp->entinfo = devm_kcalloc(dev, JOBR_DEPTH, sizeof(*jrp->entinfo),
 				    GFP_KERNEL);
 	if (!jrp->entinfo)
-		goto out_free_outring;
+		return -ENOMEM;
 
 	tasklet_init(&jrp->irqtask, caam_jr_dequeue, (unsigned long)dev);
 
@@ -495,9 +493,6 @@ static int caam_jr_init(struct device *dev)
 
 	return 0;
 
-out_free_outring:
-	dma_free_coherent(dev, sizeof(struct jr_outentry) * JOBR_DEPTH,
-			  jrp->outring, outbusaddr);
 out_free_inpring:
 	dma_free_coherent(dev, sizeof(dma_addr_t) * JOBR_DEPTH,
 			  jrp->inpring, inpbusaddr);
-- 
2.21.0