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arch/powerpc/fsl_rmu: Use dma_zalloc_coherent

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Replaced dma_alloc_coherent + memset with dma_zalloc_coherent

Signed-off-by: Sabyasachi Gupta <sabyasachi.linux@gmail.com>
Signed-off-by: Scott Wood <oss@buserror.net>
This commit is contained in:
Sabyasachi Gupta 2018-11-05 07:52:48 +05:30 committed by Scott Wood
parent 8c6c942d33
commit 7811eade24
1 changed files with 1 additions and 3 deletions
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4
arch/powerpc/sysdev/fsl_rmu.c
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@ -756,15 +756,13 @@ fsl_open_outb_mbox(struct rio_mport *mport, void *dev_id, int mbox, int entries)
}
/* Initialize outbound message descriptor ring */
rmu->msg_tx_ring.virt = dma_alloc_coherent(priv->dev,
rmu->msg_tx_ring.virt = dma_zalloc_coherent(priv->dev,
rmu->msg_tx_ring.size * RIO_MSG_DESC_SIZE,
&rmu->msg_tx_ring.phys, GFP_KERNEL);
if (!rmu->msg_tx_ring.virt) {
rc = -ENOMEM;
goto out_dma;
}
memset(rmu->msg_tx_ring.virt, 0,
rmu->msg_tx_ring.size * RIO_MSG_DESC_SIZE);
rmu->msg_tx_ring.tx_slot = 0;
/* Point dequeue/enqueue pointers at first entry in ring */