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Date:   Thu, 03 Sep 2020 16:54:32 -0700 (PDT)
From:   David Miller <>
Subject: Re: [PATCH RESEND] smsc9420: switch from 'pci_' to 'dma_' API

From: Christophe JAILLET <>
Date: Thu,  3 Sep 2020 22:10:55 +0200

> The wrappers in include/linux/pci-dma-compat.h should go away.
> The patch has been generated with the coccinelle script below and has been
> hand modified to replace GFP_ with a correct flag.
> It has been compile tested.
> When memory is allocated in 'smsc9420_probe()', GFP_KERNEL can be used
> because it is a probe function and no lock is acquired.
> While at it, rewrite the size passed to 'dma_alloc_coherent()' the same way
> as the one passed to 'dma_free_coherent()'. This form is less verbose:
>    sizeof(struct smsc9420_dma_desc) * RX_RING_SIZE +
>    sizeof(struct smsc9420_dma_desc) * TX_RING_SIZE,
> vs
>    sizeof(struct smsc9420_dma_desc) * (RX_RING_SIZE + TX_RING_SIZE)
> Signed-off-by: Christophe JAILLET <>


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