Re: [PATCH] net: ethernet: freescale: use devm_ioremap_resource()

From: Frank Li
Date: Tue May 14 2013 - 02:22:24 EST


2013/5/14 Laurent Navet <laurent.navet@xxxxxxxxx>:
> Replace a call to deprecated devm_request_and_ioremap by devm_ioremap_resource.
> also remove tests on 'r' since devm_ioremap_resource() checks for it
> in a better way.
>
> Found with coccicheck and this semantic patch:
> scripts/coccinelle/api/devm_ioremap_resource.cocci
>
> Signed-off-by: Laurent Navet <laurent.navet@xxxxxxxxx>
> ---
> drivers/net/ethernet/freescale/fec_main.c | 13 +++++--------
> 1 file changed, 5 insertions(+), 8 deletions(-)
>
> diff --git a/drivers/net/ethernet/freescale/fec_main.c b/drivers/net/ethernet/freescale/fec_main.c
> index aff0310..0afc7ff 100644
> --- a/drivers/net/ethernet/freescale/fec_main.c
> +++ b/drivers/net/ethernet/freescale/fec_main.c
> @@ -1843,8 +1843,6 @@ fec_probe(struct platform_device *pdev)
> pdev->id_entry = of_id->data;
>
> r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> - if (!r)
> - return -ENXIO;
>

why remove this check?

> /* Init network device */
> ndev = alloc_etherdev(sizeof(struct fec_enet_private));
> @@ -1861,17 +1859,16 @@ fec_probe(struct platform_device *pdev)
> (pdev->id_entry->driver_data & FEC_QUIRK_HAS_GBIT))
> fep->pause_flag |= FEC_PAUSE_FLAG_AUTONEG;
>
> - fep->hwp = devm_request_and_ioremap(&pdev->dev, r);
> + fep->hwp = devm_ioremap_resource(&pdev->dev, r);
> + if (IS_ERR(fep->hwp)) {
> + ret = PTR_ERR(fep->hwp);
> + goto failed_ioremap;
> + }
> fep->pdev = pdev;
> fep->dev_id = dev_id++;
>
> fep->bufdesc_ex = 0;
>
> - if (!fep->hwp) {
> - ret = -ENOMEM;
> - goto failed_ioremap;
> - }
> -
> platform_set_drvdata(pdev, ndev);
>
> ret = of_get_phy_mode(pdev->dev.of_node);
> --
> 1.7.10.4
>
> --
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